Quiz_Random

1. In Selaginella, the microsporangia are:

 
 
 
 

2. Cellular slime mold is:

 
 
 
 

3. In Gymnosperms endosperm is a:

 
 
 
 

4. Citrus canker is caused by :

 
 
 
 

5. The estimated length of DNA molecule in E. coli is:

 
 
 
 

6. Who discovered streptomycin?

 
 
 
 

7. The five kingdom system of classification was proposed by:

 
 
 
 

8. Mycoplasma is different from bacteria due to:

 
 
 
 

9. Ovules are not found enclosed in ovary of:

 
 
 
 

10. A plant which reproduces by spores, has vascular tissue but lacks flowers should belong to :

 
 
 
 

11. In which of the following plants would you place heterotrophs like slime moulds, rusts, mushrooms, etc.?

 
 
 
 

12. Who among the following discovered virus?

 
 
 
 

13. Psilotum is:

 
 
 
 

14. Certain enzymes like reverse transcriptase, integrase and protease are found in:

 
 
 
 

15. The life cycle of Funaria is not completed without water because of:

 
 
 
 

16. Facultative saprophyte is:

 
 
 
 

17. Indusium in Dryopteris is:

 
 
 
 

18. Black rust of wheat is caused by:

 
 
 
 

19. Rhizopus is also commonly known by the name of:

 
 
 
 

20. In angiosperms double fertilization represents:

 
 
 
 

21. Which are non-seed-bearing vascular plants?

 
 
 
 

22. At least two billion years, nearly half the age of Earth, the only organisms that existed were:

 
 
 
 

23. Asexual reproductive bodies in some higher mycelial bacteria (eg, Actinomycetous forms) are:

 
 
 
 

24. Funaria is a Bryophyta because :

 
 
 
 

25. The biological term used to describe two organisms living together and beneficial to each other is:

 
 
 
 

26. Aflatoxin is produced as a product in :

 
 
 
 

27. In which order of Gymnosperms only fossils are present?

 
 
 
 

28. Seeds are characteristically found in :

 
 
 
 

29. Prof. R.N. Singh has noteworthy contributions in the field of:

 
 
 
 

30. Bacteria are considered to be plants because they:

 
 
 
 

31. Leptothrix is an example of iron bacteria Which of the following statements best fit the iron bacteria?

 
 
 
 

32. Azolla growing in paddy fields helps in:

 
 
 
 

33. Match column I with column II and select the correct option using the codes given below:

| Column I | Column II |
|——————|—————–|
| A Citric acid | (i) Trichoderma |
| B Cyclosporin A | (ii) Clostridium|
| C Statins | (iii) Aspergillus|
| D Butyric acid | (iv) Monascus |

Codes:

| | A | B | C | D |
|——|—|—|—|—|
| (a) | i | iv| ii| iii|
| (b) | iii| iv| i | ii|
| (c) | iii| i | ii| iv|
| (d) | iii| i | iv| ii|

Answer: (d) iii, i, iv, ii

Explanation: The correct matching is:
– A Citric acid – (iii) Aspergillus
– B Cyclosporin A – (i) Trichoderma
– C Statins – (iv) Monascus
– D Butyric acid – (ii) Clostridium

179 Which of the following sets of diseases is caused by bacteria?

 
 
 
 

34. Distinction between prokaryotes and eukaryotes is mainly based on:

 
 
 
 

35. Bacteriophages have been used as:

 
 
 
 

36. The chief enzyme found in the yeast cell is:

 
 
 
 

37. Isomorphic type alternation of generation is found in:

 
 
 
 

38. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

39. Synzoospore is produced in:

 
 
 
 

40. Which of the following organisms has characters of both animals and plants?

 
 
 
 

41. The thread-like body of Nostoc filament without mucilage sheath is called :

 
 
 
 

42. Which scientist in 1884 developed a valuable method of staining the bacteria?

 
 
 
 

43. Adaxial outgrowth from the base of the leaf of Selaginella is:

 
 
 
 

44. Which is a group of ancient photosynthetic prokaryotes which give oxygen during photosynthesis?

 
 
 
 

45. The phloem of vascular system of Cycas is :

 
 
 
 

46. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

47. Most common type of conjugation in Spirogyra is :

 
 
 
 

48. Development of sporophyte from gametophyte without sexual reproduction is called :

 
 
 
 

49. The male cone of Cycas is made up of a group of :

 
 
 
 

50. Who discovered heterothallism in fungi?

 
 
 
 

51. Green plants without root, stem and leaves, but with a simple usually filamentous plant body are called:

 
 
 
 

52. A branch of science that deals with nature, symptoms, development and control of plant diseases is called :

 
 
 
 

53. Diploxylic vascular bundles are found in:

 
 
 
 

54. Rhizoids of Riccia are :

 
 
 
 

55. The fact that best supports the concept that viruses are living is that viruses:

 
 
 
 

56. Most primitive group of vascular plants are:

 
 
 
 

57. AIDS (= Acquired Immune Deficiency Syndrome) is caused by:

 
 
 
 

58. The importance of study of parasitic fungi is that they are:

 
 
 
 

59. Gram stain is used to:

 
 
 
 

60. Spermatophyta are characterized by producing:

 
 
 
 

61. A plant bears fruit, has a column of vascular bundle and a tap root system. This plant is a :

 
 
 
 

62. Retting is a process, by which bacteria bring about the:

 
 
 
 

63. Lichens form the first community in

 
 
 
 

64. Which of the following plants does not belong to Embryophyta?

 
 
 
 

65. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

66. Meristele of fern is:

 
 
 
 

67. The branch of Botany under which fungi are studied is known as:

 
 
 
 

68. Waksman was awarded Nobel Prize for the discovery of:

 
 
 
 

69. Borrelia burgdorferi is noted for its ability to cause:

 
 
 
 

70. Which among the following is known as Father of Indian phycology?

 
 
 
 

71. Chief constituents of bordeaux mixture are :

 
 
 
 

72. The cell wall of bacteria is made-up of:

 
 
 
 

73. Seeds are characteristically found in:

 
 
 
 

74. In young stage sporophyte of fern absorbs food from the prothallus through:

 
 
 
 

75. Chemosynthetic bacteria are:

 
 
 
 

76. Red rot of sugarcane is caused by :

 
 
 
 

77. Zoogametes are not found in:

 
 
 
 

78. Parmelia belongs to :

 
 
 
 

79. Protistan algae obtain their food as:

 
 
 
 

80. A number of short stalked sporangia attached with placenta and covered by indusium is called:

 
 
 
 

81. Viruses have:

 
 
 
 

82. The gametophyte of fern is as:

 
 
 
 

83. In moss, stomata are found:

 
 
 
 

84. The root nodules of leguminous plants contain:

 
 
 
 

85. Which of the following lichens is harmful?

 
 
 
 

86. Amoeba is a member of the phylum:

 
 
 
 

87. Bacteria growing on synthetic medium are called:

 
 
 
 

88. Gymnosperms could also be called as:

 
 
 
 

89. Pythium debaryanum is the causative agent of:

 
 
 
 

90. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

91. In between the sex organs of Funaria are found a number of hair-like structures which are known as :

 
 
 
 

92. Blue-green algae, which live as endozoic in protozoans are called :

 
 
 
 

93. A plasmid found in some bacteria can integrate reversibly with the chromosome of its host and then it behaves as part of the host chromosome, multiplying with it What is this plasmid known as?

 
 
 
 

94. In Pteris, the archegonia are present:

 
 
 
 

95. Acetobacter is useful in:

 
 
 
 

96. Chrysanthemum stunt disease and potato spindle tuber disease are caused by:

 
 
 
 

97. The fungi are usually:

 
 
 
 

98. Spirogyra differs from moss protonema in having :

 
 
 
 

99. To which country Antony van Leeuwenhoek belong?

 
 
 
 

100. Severe famine of West Bengal of 1942-43 was due to destruction of rice crop by a fungus called :

 
 
 
 

101. . Tapetum develops in:

 
 
 
 

102. A structure in lichen that is similar to stomata in function is :

 
 
 
 

103. The scientist who is famous for his research on rust fungi in India is :

 
 
 
 

104. Winged pollen grains are found in :

 
 
 
 

105. Which of the following causes smut disease in wheat?

 
 
 
 

106. The plants of Funaria grow :

 
 
 
 

107. A lichen having a branching form and growing either prostrate or erect on the ground is called :

 
 
 
 

108. The lichens growing on rocks are called :

 
 
 
 

109. The disease symptom necrosis refers to :

 
 
 
 

110. Fertility of the soil is increased by:

 
 
 
 

111. The life cycle of Saccharomyces ludwigii represents a typical type of life cycle:

 
 
 
 

112. The megasporangia of Selaginella can be identified due to their:

 
 
 
 

113. Which is not likely to be found on sea shore?

 
 
 
 

114. Fruits are not found in :

 
 
 
 

115. For the archegonium of Pinus which statement is true?

 
 
 
 

116. Transfusion tissue is present in the leaflet of:

 
 
 
 

117. Genetically engineered bacteria have been successfully used in the commercial production of:

 
 
 
 

118. Members of the genera Azotobacter and Rhizobium are important because they:

 
 
 
 

119. Economic importance of bacteria lies in their being:

 
 
 
 

120. Vascular cryptogam is the term used for :

 
 
 
 

121. Bacteria are found everywhere, except:

 
 
 
 

122. Pneumonia is caused by:

 
 
 
 

123. Which is an edible fungus?

 
 
 
 

124. TMV was isolated in crystalline form by:

 
 
 
 

125. The group algae possesses representatives belonging to kingdom:

 
 
 
 

126. Which of the following is not a viral disease?

 
 
 
 

127. Chemosynthetic bacteria are:

 
 
 
 

128. In a bacteriophage, DNA is present in:

 
 
 
 

129. The rhizoids of Funaria are :

 
 
 
 

130. The sporangium of fern contains nearly:

 
 
 
 

131. Pasteurized milk is:

 
 
 
 

132. The virus responsible for AIDS is an example of a (an):

 
 
 
 

133. The seed known by the name of ‘chilgoza’ that is used as dry fruit belongs to :

 
 
 
 

134. The sori of Dryopteris are covered by a thick multicellular covering known as:

 
 
 
 

135. Which one of the following is a monocot?

 
 
 
 

136. The inability of a plant to resist the effects of a pathogen or any other damaging factors is known as :

 
 
 
 

137. Red rot of sugarcane is caused by:

 
 
 
 

138. Which of the following statements is not correct?

 
 
 
 

139. Late blight of potato is caused by :

 
 
 
 

140. All but one group are included in tracheophyta; which group is this :

 
 
 
 

141. What is absent in Deuteromycetes?

 
 
 
 

142. According to Woese, fungi were placed in the domain :

 
 
 
 

143. E coli is a:

 
 
 
 

144. Which one is the smallest organism capable of autonomous growth and reproduction?

 
 
 
 

145. The gametophyte of fern bears:

 
 
 
 

146. Some diseases caused by bacteria are:

 
 
 
 

147. In which of the following, RNA is the genetic material?

 
 
 
 

148. If the sporangia in a sorus are in the same stage of development it is called:

 
 
 
 

149. Viruses are commonly transmitted in plants through:

 
 
 
 

150. Bryophyta have been placed in cryptogams because:

 
 
 
 

151. The flagella of Chlamydomonas are:

 
 
 
 

152. The lambda phase is a:

 
 
 
 

153. Fern and Cycas are similar in the presence of:

 
 
 
 

154. One of the distinctive feature of Spirogyra is :

 
 
 
 

155. Virus and bacteriophage are made-up of:

 
 
 
 

156. Vegetative reproduction in Cycas is by means of :

 
 
 
 

157. The largest alga is:

 
 
 
 

158. Interferon is a:

 
 
 
 

159. Yeast grows more rapidly in:

 
 
 
 

160. The microsporophyll of Selaginella are the forerunners of which structure of Angiosperms?

 
 
 
 

161. Columella is a specialized sterile structure found in sporangium of:

 
 
 
 

162. Pollination in Cycas takes place by :

 
 
 
 

163. In bacterial chromosome, the nucleic acid polymers are:

 
 
 
 

164. The sporophyte of Riccia is :

 
 
 
 

165. Sometimes the bacterial cell is enclosed in:

 
 
 
 

166. Pasteur is famous for his:

 
 
 
 

167. The species which are highly restricted in distribution are called:

 
 
 
 

168. Most resistant spore in bacteria is:

 
 
 
 

169. Doctors usually boil their syringe and other surgical instruments before use:

 
 
 
 

170. Most of the algae along with other submerged plants usually float on water during the day time, while they sink at night, because :

 
 
 
 

171. The plants which produce embryo but lack vascular tissue and seeds are placed in :

 
 
 
 

172. Wine turns sour because of:

 
 
 
 

173. The zoospores of Ulothrix are :

 
 
 
 

174. Mostly type of zygospore in Ulothrix is:

 
 
 
 

175. Antibiotics cure the disease by:

 
 
 
 

176. True sexuality is not found in:

 
 
 
 

177. The sex organs that develop amongst the rhizoids of fern prothallus are:

 
 
 
 

178. Male gametes in Dryopteris are:

 
 
 
 

179. Sweet scented lichen thalli used for making soaps, cosmetics are :

 
 
 
 

180. Cyanophage is a virus that attacks:

 
 
 
 

181. Ovules are not found enclosed in ovary in :

 
 
 
 

182. Reproduction in Cycas takes place by :

 
 
 
 

183. The mature ligule has a prominent basal portion called:

 
 
 
 

184. Agar-agar is obtained from:

 
 
 
 

185. The stem and petiole are covered with numerous brownish scale-like structures which are called:

 
 
 
 

186. Majority of lichens are :

 
 
 
 

187. The capsule of fern sporangium bursts at a place called:

 
 
 
 

188. Cap cells are found in the filament of:

 
 
 
 

189. What is special feature of fern archegonia?

 
 
 
 

190. Most of the lichens are composed of :

 
 
 
 

191. The sexual reproductive organs in Rhizopus are:

 
 
 
 

192. Which one of the following is an endozoic algae?

 
 
 
 

193. The megaspore of Selaginella on germination produces:

 
 
 
 

194. Common phycobiont in a lichen is :

 
 
 
 

195. Master-slave relationship between fungi and algae in the lichens is called :

 
 
 
 

196. Lichen show :

 
 
 
 

197. Formation of gametophyte-like structure from sporophyte without reduction division is called (i.e., without formation of spores):

 
 
 
 

198. Typhoid in man is caused by:

 
 
 
 

199. In which of the following diploid stage is usually dominant?

 
 
 
 

200. Iodine is obtained from:

 
 
 
 

201. Genera Plantarum which appeared in three volumes from 1862-1883 was written by:

 
 
 
 

202. The sporangia of Selaginella are attached:

 
 
 
 

203. In Cycas:

 
 
 
 

204. For the disease of red stripe of sugarcane the bacterium responsible is:

 
 
 
 

205. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

206. Which of the following protein is associated with prion disease?

 
 
 
 

207. Citrus canker is caused by:

 
 
 
 

208. An excessive enlargement of diseased organ because of increase in the number of cells is called:

 
 
 
 

209. Atracheata term has been used by Oswald Tippo for :

 
 
 
 

210. Rhizopus belongs to:

 
 
 
 

211. Select the wrong statement:

 
 
 
 

212. In Pteris, the roots are:

 
 
 
 

213. Plant body is violettish-blue or blue-green in:

 
 
 
 

214. Diaminopimelic acid and muramic acid are constituents of cell walls in:

 
 
 
 

215. The orders generally have the uniform endings:

 
 
 
 

216. Club moss and Peat moss belong to:

 
 
 
 

217. Rice, pea, potato are :

 
 
 
 

218. The number of cotyledons in the embryo of Pinus are :

 
 
 
 

219. In which of the following, RNA is double stranded:

 
 
 
 

220. The disease occurring more or less regularly from year to year in a particular locality is referred to as :

 
 
 
 

221. Which disease is caused by the bacterium Treponema pallidum?

 
 
 
 

222. Yeast is a source of:

 
 
 
 

223. Ergot of rye is caused by:

 
 
 
 

224. Fruits are not found in Cycas because:

 
 
 
 

225. Banana bunchy top is caused by :

 
 
 
 

226. A plant bears fruit, has a column of vascular bundle and a tap root system. This plant is a:

 
 
 
 

227. Some bacteria cannot be killed easily because of:

 
 
 
 

228. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

229. Which of the following is correct regarding AIDS causative agent HIV? (NEET 2016)

 
 
 
 

230. Spores of which plants have chloroplast:

 
 
 
 

231. In binomial system most of the words are:

 
 
 
 

232. The fungi used as food are:

 
 
 
 

233. Redness of red sea is due to :

 
 
 
 

234. Infective nature of Tobacco mosaic disease was discovered by:

 
 
 
 

235. Black rust of wheat is caused by:

 
 
 
 

236. The nucleus of bacteria is:

 
 
 
 

237. ‘Red snow’ is caused by which of the following in alpine region?

 
 
 
 

238. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

239. Lichens are the indicator of pollution :

 
 
 
 

240. The cortex cells of the young ‘stem’ or axis of Funaria are :

 
 
 
 

241. The coralloid roots are :

 
 
 
 

242. The causal organism of early blight of potato is :

 
 
 
 

243. In Funaria, calyptra is derived from :

 
 
 
 

244. Substances obtained from microorganisms and used to inhibit the growth of other microorganisms are:

 
 
 
 

245. All the following human diseases are caused by spirochetes except:

 
 
 
 

246. The roots of Cycas are :

 
 
 
 

247. Mycoplasma was discovered by:

 
 
 
 

248. Pinus microsporophyll bears:

 
 
 
 

249. Substances released by some bacteria to cause toxicity in host are:

 
 
 
 

250. The bacterial decomposition of nitrogenous organic compounds in the absence of abundant oxygen usually results in the formation of substances of offensive odor, chiefly sulfur compounds. Such anaerobic decomposition is called:

 
 
 
 

251. The mycelium of Rhizopus is:

 
 
 
 

252. Most of the biological names have been derived from:

 
 
 
 

253. Which of the following have algal zone?

 
 
 
 

254. The chief characteristic of bryophyta is that :

 
 
 
 

255. The most primitive vascular plants is:

 
 
 
 

256. The sporophyte of Riccia is represented by :

 
 
 
 

257. In Cycas wood most of the tissue is made up of :

 
 
 
 

258. Soil fertility is lost by the activities of:

 
 
 
 

259. An infectious agent associated with certain mammalian degenerative disease that is composed solely of protein, is known as:

 
 
 
 

260. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

261. Which of the following is true for viruses?

 
 
 
 

262. Beijerinck isolated a free living nitrogen fixer bacterium, named:

 
 
 
 

263. For the production of which microbial action is not required?

 
 
 
 

264. Usually bacteria do not require light for synthesis of food:

 
 
 
 

265. The secondary xylem of the vascular bundles of Cycas is usually :

 
 
 
 

266. Streptomyces falls under:

 
 
 
 

267. Sporophyte of fern is:

 
 
 
 

268. The protonema which is not formed from spores is known as :

 
 
 
 

269. Bacteria were first discovered by:

 
 
 
 

270. It is sometimes seen that conjugation between two hyphae of Rhizopus does not take place even in most favourable conditions because:

 
 
 
 

271. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

272. Woody climbers are known as :

 
 
 
 

273. The parasitic fungi take their nutrition from their host with the help of:

 
 
 
 

274. A gill of Agaricus:

 
 
 
 

275. Coenogamete is found in:

 
 
 
 

276. According to the fossil record, which event has occurred most recently?

 
 
 
 

277. Nucleus in Spirogyra is suspended in the cell with the help of :

 
 
 
 

278. To which class Riccia belongs :

 
 
 
 

279. The specific genes found on the plasmids of E coli are:

 
 
 
 

280. Cycas revoluta is widely grown as :

 
 
 
 

281. Sporophyte of Funaria is :

 
 
 
 

282. Scientific name of Mango is Mangifera indica L. Here L represents:

 
 
 
 

283. Which is absent from the xylem of Cycas?

 
 
 
 

284. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

285. The number of neck canal cells in Cycas are:

 
 
 
 

286. Cocci types of bacteria are:

 
 
 
 

287. The smallest bacterium is:

 
 
 
 

288. The prothallus of fern is:

 
 
 
 

289. The leafy fern plant represents the:

 
 
 
 

290. Some biologists have used the term Mycetozoa for:

 
 
 
 

291. Mucilaginous canals in Cycas are found in :

 
 
 
 

292. The common bacterium, which lives in the human intestine is:

 
 
 
 

293. RNA particle causing symptoms like that of a virus disease are known as:

 
 
 
 

294. Early blight of potato is caused by:

 
 
 
 

295. The pathogen that causes covered smut of Sorghum is :

 
 
 
 

296. Which family of bacteria can decompose a wide variety of organic compounds, natural or man-made, including inert ones like hydrocarbons? This property has actually been used by scientists to reduce pollution such as that from petroleum spillage:

 
 
 
 

297. Sleeping sickness disease in man is caused by:

 
 
 
 

298. The chief characteristic of fern leaf is that they:

 
 
 
 

299. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

300. John Hutchinson, who was associated with Royal Botanical Garden, Kew, England, initially gave his system of classification in:

 
 
 
 

301. The basal-cell by which an alga is attached to its substratum is known as :

 
 
 
 

302. In pteridophytes, meiosis occurs at the stage of:

 
 
 
 

303. Tautonyms are illegitimate in:

 
 
 
 

304. The order generally ends with:

 
 
 
 

305. Mycoplasma are:

 
 
 
 

306. The middle sterile part of capsule is called:

 
 
 
 

307. Agar-agar and algin are the product of:

 
 
 
 

308. What is the reserve food material in chlorophycean algae?

 
 
 
 

309. Each cell of Volvox colony has a structure, similar to:

 
 
 
 

310. Which of the following is not a fungal disease?

 
 
 
 

311. Reserve food in Euglena is:

 
 
 
 

312. “Families of flowering plants” Vol I (1926) and Vol II (1934) was written by:

 
 
 
 

313. Name the scientist who called viruses as “Contagium vivum fluidum”:

 
 
 
 

314. Botulism is a:

 
 
 
 

315. In Cycas microsporangia are borne on:

 
 
 
 

316. Kuru, a human disease is caused by:

 
 
 
 

317. A characteristic spore of Agaricus, a mushroom is known as:

 
 
 
 

318. The label of a herbarium sheet does not carry information of:

 
 
 
 

319. Rhizophore of Selaginella is:

 
 
 
 

320. Yellow vein Mosaic of Bhindi Virus (Hibiscus Virus-I) is transmitted through:

 
 
 
 

321. The chief function of the indusium of the fern is:

 
 
 
 

322. The chloroplast in Ulothrix is :

 
 
 
 

323. In moss, conducting tissue is made up of

 
 
 
 

324. An alga which is rich in proteins:

 
 
 
 

325. The spermatozoids of Cycas are :

 
 
 
 

326. In the five kingdom system of classification, slime molds are included in:

 
 
 
 

327. In Funaria, the leaves are arranged on the axis:

 
 
 
 

328. The DNA of E coli is:

 
 
 
 

329. An organism that lacks plastids, even then it manufactures its own food material:

 
 
 
 

330. When the seeds are borne on megasporophylls and are not enclosed in a fruit, the plant belongs to :

 
 
 
 

331. Virion refers to:

 
 
 
 

332. Propagating materials like seeds, tubers, grafts and bulbs can be kept free of pathogens by :

 
 
 
 

333. Saccharomyces is used in:

 
 
 
 

334. Climbers are found in genus:

 
 
 
 

335. Generic name of mango is:

 
 
 
 

336. Proembryo in Pinus is :

 
 
 
 

337. On the basis of distribution of algal component in the thallus, lichens are classified as :

 
 
 
 

338. . In Bryophytes and Pteridophytes, transport of male gametes requires: (NEET 2016)

 
 
 
 

339. Pteridophytes are also known as :

 
 
 
 

340. India possesses wide biodiversity of flora and fauna. It is mainly due to its:

 
 
 
 

341. An Hfr bacterium is one that contains:

 
 
 
 

342. Which of the following disease is caused by virus?

 
 
 
 

343. In order to label the coat alone but not the nucleic acid the bacteriophage should be grown on E. coli cells previously cultured on a medium containing:

 
 
 
 

344. All protozoans possess:

 
 
 
 

345. Diatoms are not destroyed easily like other algae, because:

 
 
 
 

346. Water-net is the name of:

 
 
 
 

347. A disease is abnormal state that may result due to :

 
 
 
 

348. The megasporophyll of Cycas is equivalent to which part of Angiosperm?

 
 
 
 

349. The penicillin family of antibiotics is used primarily against:

 
 
 
 

350. What is the position of neck canal cells in Pinus?

 
 
 
 

351. In Gymnocarpeae the fruiting body is :

 
 
 
 

352. Pteridophyta are also called:

 
 
 
 

353. Among the algae kelps are :

 
 
 
 

354. Which of the following structures help in respiration of lichens?

 
 
 
 

355. Which of the following characteristics is associated with specialized transduction?

 
 
 
 

356. Which have the largest antherozoid?

 
 
 
 

357. Bacteria species of Thiobacillus and Beggiatoa play an important role in the:

 
 
 
 

358. Which is the correct statement about Selaginella?

 
 
 
 

359. Siphonogamy is found in:

 
 
 
 

360. Red rot of sugarcane is caused by :

 
 
 
 

361. Botulinum toxin effects:

 
 
 
 

362. Fern prothallus produces:

 
 
 
 

363. Which of the following is the most destructive enemies of mankind?

 
 
 
 

364. When a diseased plant is legally stopped from export, this is done under :

 
 
 
 

365. If all ponds and puddles are destroyed the organism likely to be destroyed is:

 
 
 
 

366. In plants, the substances which accumulate around the site of infection are :

 
 
 
 

367. Which of the following is necessary for the process of conjugation in bacteria?

 
 
 
 

368. Group of viruses, which attack members of Myxophyceae are termed as:

 
 
 
 

369. In Cycas the fertilization is:

 
 
 
 

370. Which of the following are absent in Mycoplasma?

 
 
 
 

371. Those bacteria designated microaerophilic are distinguished by their ability to grow:

 
 
 
 

372. A group of genera which show general structural resemblances to one another mainly in their floral organs is referred to as:

 
 
 
 

373. Which of the following organism has characters of both animals and plants?

 
 
 
 

374. Who named prion?

 
 
 
 

375. The chromosomal number in:

 
 
 
 

376. Viroids have:

 
 
 
 

377. Helotism word is used for the symbiosis between :

 
 
 
 

378. The source of litmus is :

 
 
 
 

379. Chrysophytes, Euglenoides, Dinoflagellates, and slime molds are included in the kingdom:

 
 
 
 

380. The leaf of Cycas shows:

 
 
 
 

381. System of classification proposed by Bentham and Hooker is:

 
 
 
 

382. What is a vector?

 
 
 
 

383. In which group would you place a plant that reproduces by spores, develops embryo but plant body remains undifferentiated into root, stem and leaves?

 
 
 
 

384. The multinucleate and aseptate hypha of Rhizopus are known as:

 
 
 
 

385. First animal pathogenic virus was discovered by:

 
 
 
 

386. Pteridophytes as a group differ from Bryophytes and Thallophytes in having:

 
 
 
 

387. Longest known virus is:

 
 
 
 

388. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

389. Mycelium is the name given to the plant body of:

 
 
 
 

390. Male gametophyte of Selaginella is found:

 
 
 
 

391. Which of the following causes smut disease in cultivated plants?

 
 
 
 

392. Infective portion of a virus is nucleic acid, this was discovered by:

 
 
 
 

393. The smallest known agent of a plant disease is:

 
 
 
 

394. Which of the following is the kingdom of multicellular producers?

 
 
 
 

395. Where are the antheridia and archegonia situated in moss?

 
 
 
 

396. Cyanobacteria, unlike other types of bacteria that photosynthesize and:

 
 
 
 

397. Leaf spot of groundnut is caused by :

 
 
 
 

398. Fern phloem lacks:

 
 
 
 

399. In Funaria :

 
 
 
 

400. The heart-shaped prothallus of Dryopteris is always:

 
 
 
 

401. The stem-like character of rhizophore of Selaginella is:

 
 
 
 

402. Nannandria are:

 
 
 
 

403. Endemic plants are characterised by their:

 
 
 
 

404. Those bacteria believed to have lived during the earliest years of the Earth belong to the group:

 
 
 
 

405. If a disease appears on a large scale after a long interval it is:

 
 
 
 

406. Quarantine regulations are concerned with:

 
 
 
 

407. Ovary is absent in:

 
 
 
 

408. A perennial that bears flowers and fruits once in a life time is known as :

 
 
 
 

409. Which of the following is not a correct match?

 
 
 
 

410. Fruits are not found in:

 
 
 
 

411. Certain leafless non-green branches produced from Selaginella are:

 
 
 
 

412. Dicot leaf-like reticulate venation occurs in leaves of:

 
 
 
 

413. There are some dead and corky areas with definite margins on the stem, branches and fruits of lemon. This disease should be :

 
 
 
 

414. Photosynthetic bacteria have:

 
 
 
 

415. Vascular cryptogams is the term used for:

 
 
 
 

416. Ulothrix produces :

 
 
 
 

417. Acellular slime mold is/are:

 
 
 
 

418. Nonmotile, thin-walled spores of algae are called :

 
 
 
 

419. Rhizopus and yeast are usually:

 
 
 
 

420. The fungi that grow on wood are called:

 
 
 
 

421. The scientist who created the group Protista for both unicellular plants and animals, was:

 
 
 
 

422. Lichens are indicators of :

 
 
 
 

423. Lichens reproduce by :

 
 
 
 

424. The site where the protein coat of virus is synthesized is:

 
 
 
 

425. One of the major components of the cell wall of most fungi is: (NEET 2016)

 
 
 
 

426. The role of meiosis is for:

 
 
 
 

427. An excessive enlargement of diseased organ because of increase in the number of cells is called :

 
 
 
 

428. Eligulate, eusporangiate, homosporous, protostelic pteridophyte is:

 
 
 
 

429. Leprosy is caused by:

 
 
 
 

430. Who is known as ‘Father of Taxonomy’?

 
 
 
 

431. The stem of adult Cycas plant is covered with persistent leaf-bases which are :

 
 
 
 

432. Usually, bacteria reproduce by:

 
 
 
 

433. The sori bearing leaves of fern are known as:

 
 
 
 

434. Dryopteris prothallus is bisexual but the type of gametic union is generally by:

 
 
 
 

435. Who is known as ‘Father of Taxonomy’?

 
 
 
 

436. Which is an exception to cell theory?

 
 
 
 

437. The young leaves of Cycas have :

 
 
 
 

438. Which type of sexual reproduction is found in C. brauni?

 
 
 
 

439. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

440. A plant which reproduces by spores, has vascular tissue but lacks flowers should belong to:

 
 
 
 

441. The term stele was given by:

 
 
 
 

442. All algae have:

 
 
 
 

443. Which of the following is a free-living anaerobic nitrogen-fixing bacteria?

 
 
 
 

444. Which group of plants have spores, vascular bundles but no flowers?

 
 
 
 

445. D.C. Gajdusek was awarded the Nobel Prize for discovery of prion based diseases in:

 
 
 
 

446. All but one group are included in tracheophyta; which group is this?

 
 
 
 

447. Water bloom is generally caused by :

 
 
 
 

448. Saccharomyces is well known for:

 
 
 
 

449. The central part of Funaria axis is :

 
 
 
 

450. Leaves of pea show white powdery patches due to the growth of fungal mycelium with conidia and conidiophores. These are the symptoms of :

 
 
 
 

451. Mycoplasma are sensitive to:

 
 
 
 

452. . In Oswald and Tippo’s system of classification, Pteropsida does not include:

 
 
 
 

453. Which condition is found in Cycas?

 
 
 
 

454. Protists which are diploid reproduce sexually by:

 
 
 
 

455. Coralloid roots of Cycas is distinguished from Angiosperm roots by :

 
 
 
 

456. Which of the following is a heterosporous pteridophyte?

 
 
 
 

457. Multicellular and jacketed sex organs are found in :

 
 
 
 

458. Which of the following is a beneficial activity of microorganisms?

 
 
 
 

459. Severe famine of West Bengal of 1942-43 was due to destruction of rice crop by a fungus called:

 
 
 
 

460. Which statement is wrong in regard to bacteria?

 
 
 
 

461. A part of pathogen that is transmitted to the host is termed as :

 
 
 
 

462. The antibiotic is obtained from:

 
 
 
 

463. The gametophyte of moss has distinct phases :

 
 
 
 

464. In Cycas which structure is equivalent to stamen?

 
 
 
 

465. Which is not found in bacteria?

 
 
 
 

466. In Molecular Biology, E coli has been used in studying:

 
 
 
 

467. Richest source of protein, becoming popular throughout world and available in the Indian market also:

 
 
 
 

468. Which among the following is a shrub?

 
 
 
 

469. Which of the following is true for Selaginella?

 
 
 
 

470. The tree fern is:

 
 
 
 

471. Fern plants are:

 
 
 
 

472. Most primitive embryophytes are placed in:

 
 
 
 

473. Cryptogams include :

 
 
 
 

474. The leaves of Funaria are :

 
 
 
 

475. Which is the hydrogen donor in the bacterial photosynthesis?

 
 
 
 

476. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

477. White rust of crucifers is caused by:

 
 
 
 

478. Total parasites belong to:

 
 
 
 

479. Rhizopus, which is saprophytic by nature, is also known as:

 
 
 
 

480. The columella of moss is the region of moss capsule :

 
 
 
 

481. The vascular bundles of Cycas stem are :

 
 
 
 

482. Ginkgo biloba is a:

 
 
 
 

483. The alga, Spirogyra are found in :

 
 
 
 

484. Pinus is:

 
 
 
 

485. The Protists in which cell size decreases with each division are:

 
 
 
 

486. Broad spectrum antibiotic is, which:

 
 
 
 

487. Which of the following is a parasitic algae?

 
 
 
 

488. Methanogens belong to:

 
 
 
 

489. Which character in a Cycas leaflet indicates its xerophytic nature?

 
 
 
 

490. Certain bacteria are able to thrive under extreme environmental conditions such as the absence of oxygen, high salt concentration, high temperature, or highly acidic environment What are these bacteria called?

 
 
 
 

491. A disease is an abnormal state that may result due to:

 
 
 
 

492. Embryo formation is not known in :

 
 
 
 

493. Agar-agar, a common substance used in research is obtained from :

 
 
 
 

494. Bentham and Hooker placed gymnosperms:

 
 
 
 

495. In moss, sporophyte is formed on:

 
 
 
 

496. Fruiting body of lichens is :

 
 
 
 

497. Bivalved siliceous shell or frustule occur in:

 
 
 
 

498. Which of the following plants does not have archegonium?

 
 
 
 

499. Which bacteria convert nitrate into nitrogen?

 
 
 
 

500. A control measure prior to the appearance of a particular disease comes under:

 
 
 
 

501. Under suitable conditions, some bacteria are capable of reproducing by binary fission once every half hour. Suppose you placed a single bacterium in a culture medium and it (and its descendants) proceeded to reproduce at this rate. How many bacteria would be present after 5 hours?

 
 
 
 

502. Which part of the plant is not affected by Albugo?

 
 
 
 

503. Which type of sexual reproduction is found in C. debaryana?

 
 
 
 

504. Azolla and Salvinia both are:

 
 
 
 

505. Gametophyte is the main plant body in :

 
 
 
 

506. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

507. LSD is:

 
 
 
 

508. In the sub genus Heterophyllum of genus Selaginella the leaves are present in:

 
 
 
 

509. The bacteria that cause tetanus can be killed only by prolonged heating at temperatures considerably above boiling. This suggests that tetanus bacteria:

 
 
 
 

510. The spur of Pinus roxburghii has :

 
 
 
 

511. Anoxygenic photosynthesis occurs in:

 
 
 
 

512. Which of the following would appear as the pioneer organism on bare rocks :

 
 
 
 

513. What is streptomycin?

 
 
 
 

514. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature:

 
 
 
 

515. Which of the following shows heterotrichous habit?

 
 
 
 

516. Heterosporous pteridophytes always form:

 
 
 
 

517. The megasporangium of Selaginella is:

 
 
 
 

518. Nitrifying bacteria play an important role by converting:

 
 
 
 

519. A microbiologist found that some bacteria infected by phages had developed the ability to make a particular amino acid that they could not make before. This ability was probably a result of:

 
 
 
 

520. Pasteurization of milk involves heating for:

 
 
 
 

521. Which fixes atmospheric nitrogen?

 
 
 
 

522. Funaria can be differentiated from Cycas :

 
 
 
 

523. Bacteria differ from viruses in being sensitive to:

 
 
 
 

524. When a fungus is able to pass its complete life cycle on one host it is called:

 
 
 
 

525. Amoeba is placed in the phylum Protozoa because of:

 
 
 
 

526. Sexual reproduction in Rhizopus is by:

 
 
 
 

527. At the time of germination of zygospore in Spirogyra:

 
 
 
 

528. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

529. Asexual reproductive body of Volvox is called:

 
 
 
 

530. In prokaryotes, the mitochondria are absent. Even then Krebs’ cycle takes place. What is the site of Krebs’ cycle in bacteria?

 
 
 
 

531. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

532. The microsporophylls on the cone of Cycas are :

 
 
 
 

533. The teeth of peristome of Funaria are :

 
 
 
 

534. The number of neck canal cells in archegonium of Selaginella is:

 
 
 
 

535. Bacteria which are highly spiral in shape are called:

 
 
 
 

536. NBG of Lucknow is now named as:

 
 
 
 

537. Germination of the seed of Pinus is :

 
 
 
 

538. When milk or other products are heated for about half an hour at about 62°C and then cooled, the process is called:

 
 
 
 

539. Roots are absent in :

 
 
 
 

540. Which causes red tide?

 
 
 
 

541. The plants with soft and delicate stems, about a meter tall are known as :

 
 
 
 

542. Germ theory of disease was proposed by:

 
 
 
 

543. Under certain circumstances, a generating cell forms aplanospores from mucilaginous mass, which encloses numerous small but uninucleated bodies; this is known as :

 
 
 
 

544. The process of transformation in bacteria does not require:

 
 
 
 

545. Most primitive embryophytes are placed in :

 
 
 
 

546. The most common method of vegetative reproduction in yeast is:

 
 
 
 

547. Selaginella differs from Moss in having:

 
 
 
 

548. The gametophyte produced by apospory is :

 
 
 
 

549. The prothallus of fern represents the plant:

 
 
 
 

550. Which is a redwood tree?

 
 
 
 

551. Which of the following can be said to be the precursor of seed-bearing plants?

 
 
 
 

552. A substance (a low molecular weight protein) produced by host cells in response to viral infection, that protects other cells against further viral infection is:

 
 
 
 

553. Diphtheria is caused by:

 
 
 
 

554. Which type of sexual reproduction is found in Volvox?

 
 
 
 

555. All the following human diseases are due to members of the genus Clostridium except:

 
 
 
 

556. Detailed study of bacteriophage was made by:

 
 
 
 

557. Biciliate antherozoids are found in which of the following?

 
 
 
 

558. The structure produced from germination of a microspore of Selaginella is:

 
 
 
 

559. Bacteria which are found in marshy areas and among the flora of cattle rumen are called:

 
 
 
 

560. How is moss different from fern?

 
 
 
 

561. The bacteria that can spoil under-processed canned food are:

 
 
 
 

562. The most important property of yeast is:

 
 
 
 

563. The structure formed by the bacterial genome is generally called as:

 
 
 
 

564. The tallest moss in the world is :

 
 
 
 

565. Polystelic condition is found in:

 
 
 
 

566. Etiology includes the study of :

 
 
 
 

567. ‘Die naturlichen Pflanzen Familien’ which runs into 20 volumes was written by:

 
 
 
 

568. Spirogyra represents the :

 
 
 
 

569. The tallest living gymnosperm tree in the world belongs to :

 
 
 
 

570. If a disease appear on large scale after a long interval it is :

 
 
 
 

571. Penicillin is obtained from:

 
 
 
 

572. Penicillin was discovered by:

 
 
 
 

573. Genetic material of TMV is:

 
 
 
 

574. Heterospory is the production of:

 
 
 
 

575. Fire resistant fibres and plastic are obtained from the alginates present in the cell wall of which algae?

 
 
 
 

576. Halophiles are the bacteria that require for growth:

 
 
 
 

577. The archegonia in Selaginella develop on:

 
 
 
 

578. Which is a gametophytic tissue?

 
 
 
 

579. Which of the following does not help in penetration of pathogen into the host?

 
 
 
 

580. The sporangiophores in Rhizopus are:

 
 
 
 

581. Which is the nuclear material in bacteria?

 
 
 
 

582. Which of the following diseases are caused by Mycoplasma?

 
 
 
 

583. In which of the following, isogamy, anisogamy and oogamy all are found?

 
 
 
 

584. Which is a fungicide?

 
 
 
 

585. Cycas plant in appearance resembles :

 
 
 
 

586.

587. Non-porous wood for furniture is produced by:

 
 
 
 

588. Oswald Tippo’s classification is:

 
 
 
 

589. Bacteriophage consists of:

 
 
 
 

590. A group of plants with similar characteristics of any rank is termed:

 
 
 
 

591. The chief characteristic of class Ascomycetes is:

 
 
 
 

592. Which of the following does not contain chlorophyll?

 
 
 
 

593. The chloroplast of Chlamydomonas are:

 
 
 
 

594. The fern plant is:

 
 
 
 

595. Which of the following plants does not belong to Embryophyta?

 
 
 
 

596. Cell walls of Gram-positive bacteria contain:

 
 
 
 

597. Discovery of penicillin was based on:

 
 
 
 

598. Ancestors of Bryophyta were some aquatic plants is clear from the fact that :

 
 
 
 

599. Vascular tissue is found in :

 
 
 
 

600. In the two kingdom system of classification, Euglena is included in:

 
 
 
 

601. Antibiotic has been extracted from :

 
 
 
 

602. Pythium debaryanum is the causative agent of:

 
 
 
 

603. The zygospore in Rhizopus on germination forms:

 
 
 
 

604. The foliose lichens are attached to substratum by means of :

 
 
 
 

605. Pollination in Pinus is :

 
 
 
 

606. Black rust of wheat is caused by:

 
 
 
 

607. Which group of plants is called “Amphibians of Plant World”?

 
 
 
 

608. The xylem of stele of fern rhizome is made up of:

 
 
 
 

609. The bacteria, which are smallest in size are:

 
 
 
 

610. The disease apple scab is caused by:

 
 
 
 

611. The oldest book of botanical work which now exists was written by Theophrastus. Its name is:

 
 
 
 

612. Ovary is absent in :

 
 
 
 

613. Desired type of Cycas can be grown by:

 
 
 
 

614. Which functions as hydrogen donor in photosynthetic green sulfur bacteria?

 
 
 
 

615. Sometimes a gamete of Rhizopus functions as zygospore. It is known as:

 
 
 
 

616. Mycoplasma contains:

 
 
 
 

617. Centric discoid form of diatom is:

 
 
 
 

618. Select the correct statement: (NEET 2016)

 
 
 
 

619. The spores which are formed in the sporangium of Rhizopus are:

 
 
 
 

620. In bacterial photosynthesis, which functions as reductant of CO₂ is:

 
 
 
 

621. Enteric bacteria are those bacteria that live:

 
 
 
 

622. Which part of Riccia bears nurse cells?

 
 
 
 

623. The spores of Funaria on germination give rise to :

 
 
 
 

624. In moss, sporogenous tissue arises from:

 
 
 
 

625. Why is Cycas called a living fossil?

 
 
 
 

626. The science of study of bacteria is known as bacteriology. The name bacteria was first of all given by:

 
 
 
 

627. Members of the genus Streptococcus are responsible for cases of:

 
 
 
 

628.

 

629. Inverted omega-shaped arrangement of vascular bundles is found in :

 
 
 
 

630. Cycas has two cotyledons but even then it is not classified as a dicot:

 
 
 
 

631. Which one of the following belong to cryptogams only:

 
 
 
 

632. If moss protonema is formed from capsule cells it will be :

 
 
 
 

633. Winged seeds are found in :

 
 
 
 

634. In Cycas, the vascular bundle of a leaflet is :

 
 
 
 

635. The ferns are usually found:

 
 
 
 

636. Heterotrichous habit means :

 
 
 
 

637. Most of the members of the genus Bacillus are known for:

 
 
 
 

638. Which of the following structures help in retaining moisture?

 
 
 
 

639. System of classification presented by a Russian botanist A. Takhtajan is:

 
 
 
 

640. Pseudomycelium is found in:

 
 
 
 

641. Who discovered cyanophages?

 
 
 
 

642. Club moss is the common name of :

 
 
 
 

643. The common name of Funaria, by which it is generally known, is :

 
 
 
 

644. Parthenium hysterophorus is a native of South America but it grows luxuriantly in most of the area of India. In India, it is considered as:

 
 
 
 

645. Nitrogen-fixing bacteria may be located:

 
 
 
 

646. Ethylene oxide is widely used to:

 
 
 
 

647. Yeast belongs to class:

 
 
 
 

648. Small epidermal swellings due to infection are called :

 
 
 
 

649. The archegonia of Selaginella are differentiated by:

 
 
 
 

650. Prions are pathogens that are thought to consist solely of:

 
 
 
 

651. Ex situ conservation of endangered wildlife flora and fauna is possible through:

 
 
 
 

652. Cycas is :

 
 
 
 

653. Which group of plants have spores, vascular bundles and no seeds?

 
 
 
 

654. Lichens reproduce by :

 
 
 
 

655. What are Cyanobacteria?

 
 
 
 

656. What is mycorrhiza?

 
 
 
 

657. Linnaeus is credited with introducing:

 
 
 
 

658. If the sporangia in a sorus are in different stages of development and are intermixed, this condition is called:

 
 
 
 

659. Oswald Tippo’s classification was based on :

 
 
 
 

660. Elongated structure on upper cortex of lichen, having some algal and fungal partners as in main thallus is :

 
 
 
 

661. Which of the following have a prokaryotic cell?

 
 
 
 

662. Important feature of Spirogyra that distinguishes it from Ulothrix is :

 
 
 
 

663. Most appropriate word for protozoans is:

 
 
 
 

664. The sori in Dryopteris are found on:

 
 
 
 

665. Cycas is:

 
 
 
 

666. Ectocarpus produces:

 
 
 
 

667. When the gametophyte is not formed by spores but by any other part of sporophyte it is known as :

 
 
 
 

668. Facultative parasite is:

 
 
 
 

669. Sometimes a ladder-like structure is exhibited in Spirogyra due to :

 
 
 
 

670. Chemoautotrophic bacteria are bacteria that derive their energy from chemical reactions and:

 
 
 
 

671. If a sporangium developed from a group of cells it is called:

 
 
 
 

672. Which part of the plant is not affected by Albugo?

 
 
 
 

673. The method of reproduction in bacterium, in which a virus participates is:

 
 
 
 

674. Name the scientist who gave dual hypothesis for lichens?

 
 
 
 

675. Which one of the following statement is wrong?

 
 
 
 

676. John Hutchinson divided dicots into two divisions:

 
 
 
 

677. Water-borne bacterial diseases are:

 
 
 
 

678. Pollination drop is:

 
 
 
 

679. Cycas is different from mango in :

 
 
 
 

680. Some of the species of Selaginella are commonly called:

 
 
 
 

681. Which of the following statement is correct?

 
 
 
 

682. Lichens are pioneers of vegetation in a :

 
 
 
 

683. Which organisms are the oldest life forms?

 
 
 
 

684. Among the currently used drugs for treating tuberculosis are:

 
 
 
 

685. Protozoans are considered animals because these are:

 
 
 
 

686. For purposes of microbial control, the term sterilization implies:

 
 
 
 

687. The decomposition of organic compounds in the presence of O2 and without the development of odoriferous substances is called:

 
 
 
 

688. What are plasmids?

 
 
 
 

689. Smut of maize is caused by :

 
 
 
 

690. Downy mildew disease is caused by :

 
 
 
 

691. Bacteria which convert elemental nitrogen into nitrogenous substances are:

 
 
 
 

692. Chemicals which are applied soon after the outset of infection, suppress the development of pathogen, thus curing the plant, are called :

 
 
 
 

693. In which of the following plants is the sporophyte a dominant phase in the life cycle?

 
 
 
 

694. Which of the following are included in Tracheophyta?

 
 
 
 

695. Mycoplasmas are not viruses in nature because:

 
 
 
 

696. Most of the algae are :

 
 
 
 

697. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

698. Of all organisms, the most adaptable and versatile are:

 
 
 
 

699. Disease resistant plant varieties can be produced by :

 
 
 
 

700. Which plays an important role in the dispersal of spores in Funaria?

 
 
 
 

701. The male gametes of Pinus are :

 
 
 
 

702. Atracheata term has been used by O. Swiald Tippo for:

 
 
 
 

703. Streptomycin is obtained from:

 
 
 
 

704. The antherozoids of Funaria are :

 
 
 
 

705. In bryophytes and pteridophytes, transport male gametes requires:

 
 
 
 

706. The mode of nutrition of bacteria is usually:

 
 
 
 

707. Which of the following is a monocot?

 
 
 
 

708. The development of Selaginella embryo is:

 
 
 
 

709. In dinoflagellates, the two flagella are:

 
 
 
 

710. Heterospory and ligulate leaves are a feature of:

 
 
 
 

711. Which one of the following temperatures would most likely kill a mesophile?

 
 
 
 

712. Which lichen is called Reindeer moss?

 
 
 
 

713. The smallest unit of classification is:

 
 
 
 

714. Triple antigen injection or vaccine are for:

 
 
 
 

715. The photoreceptor found at the anterior end of Chlamydomonas is:

 
 
 
 

716. Maximum diversity of life forms occurs in :

 
 
 
 

717. Reproduction in Rhizopus is:

 
 
 
 

718. In Herpes virus DNA is:

 
 
 
 

719. Smallpox is caused by:

 
 
 
 

720. The photosynthetic protists are:

 
 
 
 

721. Green plants are classified as :

 
 
 
 

722. Which is a tautonym?

 
 
 
 

723. The smut mycelium which initiates the infection is usually :

 
 
 
 

724. Which type of sexual reproduction is found in C. coccifera?

 
 
 
 

725. Heterocysts are found in :

 
 
 
 

726. Most primitive kind of flower is represented by:

 
 
 
 

727. The main characteristic that distinguishes a Spirogyra cell from a Ulothrix cell is :

 
 
 
 

728. Embryophyta includes :

 
 
 
 

729. The largest known bacterium is:

 
 
 
 

730. The leaves of Funaria are :

 
 
 
 

731. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

732. The total number of families of Angiosperm in Hutchinson’s classification are:

 
 
 
 

733. Fern prothallus is:

 
 
 
 

734. Bryophyta have a special character from other plants:

 
 
 
 

735. Which is not true for Escherichia coli?

 
 
 
 

736. Which of the following is wrong for fungi? (NEET 2016)

 
 
 
 

737. The similarity between cyanobacteria and bacteria:

 
 
 
 

738. The first to isolate a plant virus was:

 
 
 
 

739. The antheridia in Funaria are formed at the apex of the male shoot in :

 
 
 
 

740. When the F-factor enters a recipient cell during conjugation, the recipient cell:

 
 
 
 

741. Yeast is different from Rhizopus and Penicillium in being:

 
 
 
 

742. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

743. Sexual reproduction of lichen is due to :

 
 
 
 

744. Each chloroplast in Spirogyra bears :

 
 
 
 

745. Infective part of virus was discovered by:

 
 
 
 

746. To introduce a foreign gene in a plant, which one is used?

 
 
 
 

747. Iodine is obtained from :

 
 
 
 

748. Bacteria are placed under:

 
 
 
 

749. The fungi are mostly:

 
 
 
 

750. The number of androcytes in male prothallus of Selaginella are:

 
 
 
 

751. Pinus gerardiana is :

 
 
 
 

752. Total number of families of angiosperms in Bentham and Hooker’s system classification is:

 
 
 
 

753. Ergot is obtained from :

 
 
 
 

754. There is a class of phenolic compounds produced by the host plant in response to fungal infections :

 
 
 
 

755. Absorptive nutrition is:

 
 
 
 

756. Photosynthetic protists belong to:

 
 
 
 

757. Zygote which divides by meiotic division (zygotic meiosis occurs in):

 
 
 
 

758. In Pteris, the sporophytic generation begins from and ends with the formation of spore mother cells:

 
 
 
 

759. Funaria are commonly found :

 
 
 
 

760. On germination, each zygospore of Spirogyra divides meiotically into four, but the number of filaments produced is :

 
 
 
 

761. Enzymes are absent in:

 
 
 
 

762. Standard size of a herbarium sheet is:

 
 
 
 

763. In a diplontic life cycle:

 
 
 
 

764. Saccharomyces ludwigii ascus produces:

 
 
 
 

765. Number of capsomeres forming capsid of TMV is:

 
 
 
 

766. A control measure prior to the appearance of a particular disease comes under :

 
 
 
 

767. Body disorders due to harmful physiological changes are known as :

 
 
 
 

768. Plant body is diploid and meiosis occurs in diploid gametangia at the time of formation of gametes in:

 
 
 
 

769. The stele of Dryopteris is a:

 
 
 
 

770. Which of the lichen live as a crust over soil, rocks and branches of trees?

 
 
 
 

771. A special structure is born in between the microsporophyll and microsporangium of Selaginella. It is called:

 
 
 
 

772. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

773. Aflatoxin is produced by:

 
 
 
 

774. Little leaf disease of Brinjal is caused by:

 
 
 
 

775. In moss, calyptra is formed from:

 
 
 
 

776. Special feature of pollen grains of Pinus is :

 
 
 
 

777. Choose the correct statement about Spirogyra:

 
 
 
 

778. Placenta in fern is:

 
 
 
 

779. Cycas is similar to a mustard plant :

 
 
 
 

780. Evidence in support of root-like nature of Selaginella rhizophore is:

 
 
 
 

781. The zygospores formed by the conjugation of gametangia are:

 
 
 
 

782. The upper region of moss capsule is :

 
 
 
 

783. Metulae are found in:

 
 
 
 

784. In moss, reduction division occurs in :

 
 
 
 

785.

786. The truncated cone of HIV consists of:

 
 
 
 

787. Green plants are classified as:

 
 
 
 

788. Spirogyra is commonly known by the name of ‘Pond scum’ or ‘Pond silk’ because :

 
 
 
 

789. In moss, peristomial teeth are:

 
 
 
 

790. Cleavage polyembryony is found in :

 
 
 
 

791. Spores formed at the tip of fungal hyphae are called:

 
 
 
 

792. Spermatophyta are characterized by producing:

 
 
 
 

793. Ovules are not found enclosed in ovary in :

 
 
 
 

794. Megasporophylls of Pteridophyta are comparable to which structure of Angiosperms?

 
 
 
 

795. Which is not the characteristic feature in Spirogyra life history?

 
 
 
 

796. Lichens are ecologically important because :

 
 
 
 

797. Haplo-diplo-haplontic type triphasic life cycle occurs in:

 
 
 
 

798. The genetic material of poxvirus is:

 
 
 
 

799. Circular DNA is seen in:

 
 
 
 

800. The reserve food in yeast is in the form of:

 
 
 
 

801. Bacteria that are pathogenic in the body grow at temperatures:

 
 
 
 

802. The two conjugating gametangia of Rhizopus are:

 
 
 
 

803. Capsella bursa-pastoris exhibit a life cycle which is:

 
 
 
 

804. The seedless plants which possess vascular tissues are:

 
 
 
 

805. The antheridia of fern are different from that of moss in the sense that they produce:

 
 
 
 

806. Binomial system of nomenclature means that every organism has:

 
 
 
 

807. Conifers are adapted to tolerate extreme environmental conditions because of: (NEET 2016)

 
 
 
 

808. The green upright sterile hair-like structures among the antheridia in moss are known as :

 
 
 
 

809. Fungi have been separated from kingdom Protista on the basis of:

 
 
 
 

810. If a sporangium is derived from a single cell it is called:

 
 
 
 

811. Viruses are considered to be:

 
 
 
 

812. When an infection is very wide in occurrence, it is called :

 
 
 
 

813. Which of the following applies to Selaginella?

 
 
 
 

814. ‘Pond silk’ or ‘Water silk’ is the common name of :

 
 
 
 

815. Liverworts are included in :

 
 
 
 

816. Embryophyta includes:

 
 
 
 

817. Characters drawn from flowers are mainly used as basis for classification in seed plants because:

 
 
 
 

818. The Rhizopus gametes are formed in:

 
 
 
 

819. Funaria is :

 
 
 
 

820. The word “sea weeds” is used for:

 
 
 
 

821. In the life of all plant groups, the first cell of gametophytic generation is:

 
 
 
 

822. Simple polyembryony is found in :

 
 
 
 

823. Select the wrong statement:

 
 
 
 

824. To sterilize glassware and the culture medium, which equipment is used?

 
 
 
 

825. Funaria is :

 
 
 
 

826. The ascus of yeast contains:

 
 
 
 

827. Which are non-seed-bearing vascular plants?

 
 
 
 

828. All archaebacteria lack:

 
 
 
 

829. The capsid of TMV is made-up of nearly:

 
 
 
 

830. Sometimes different authors give different names to one and the same species. In such a situation:

 
 
 
 

831. Clostridium can:

 
 
 
 

832. Zygospores may not be produced in Rhizopus due to:

 
 
 
 

833.

834. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

835. Cyathia is characterized by:

 
 
 
 

836. The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the:

 
 
 
 

837. The developing embryo in Selaginella derives its food from:

 
 
 
 

838. Which group of algae have an incipient nucleus?

 
 
 
 

839. The Rhizopus is:

 
 
 
 

840. The development of sporangium in Selaginella is:

 
 
 
 

841. In tracheophyta:

 
 
 
 

842. A diseased leaf shows some areas with dead tissue. This symptom is often referred to as :

 
 
 
 

843. Where does meiosis occur in yeast?

 
 
 
 

844. How a fern differs from a moss?

 
 
 
 

845. Bacteria which are spherical are called:

 
 
 
 

846. Mixed cropping helps :

 
 
 
 

847. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

848. Marsilea quadrifolia has only four leaflets. It is a:

 
 
 
 

849. What is the role of nitrifying bacteria?

 
 
 
 

850. Which class of Protozoa includes all parasitic forms?

 
 
 
 

851. Disease-resistant plant varieties can be produced by:

 
 
 
 

852. Late blight of potato is caused by:

 
 
 
 

853. Fairy ring is the name given to:

 
 
 
 

854. Lichens show :

 
 
 
 

855. Meiosis in Ulothrix takes place:

 
 
 
 

856. Milk is converted to curd by:

 
 
 
 

857. Shedding of pollen grains in Pinus takes place at :

 
 
 
 

858. Which of the following are included in Tracheophyta?

 
 
 
 

859. Photoautotrophic bacteria have:

 
 
 
 

860. Which of the following is sago palm?

 
 
 
 

861. An English surgeon believed that microorganisms of the air caused infection in the wound and to avoid the infection, he used carbolic acid and hence he became the father of modern antiseptic surgery. His name is:

 
 
 
 

862. Plasmids are:

 
 
 
 

863. Some of the species of Selaginella perennate by means of:

 
 
 
 

864. One of the algae can be used as food in the space flight. It is :