Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

6. Acellular slime mold is/are:

 
 
 
 

7. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

9. The mode of nutrition of bacteria is usually:

 
 
 
 

10. Absorptive nutrition is:

 
 
 
 

11. Red rot of sugarcane is caused by :

 
 
 
 

12. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

14. Which is absent from the xylem of Cycas?

 
 
 
 

15. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

20. Centric discoid form of diatom is:

 
 
 
 

21. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. Aflatoxin is produced by:

 
 
 
 

25. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

27. Bacteria differ from viruses in being sensitive to:

 
 
 
 

28. Among the algae kelps are :

 
 
 
 

29. Milk is converted to curd by:

 
 
 
 

30. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

32. In binomial system most of the words are:

 
 
 
 

33. Majority of lichens are :

 
 
 
 

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

 
 
 
 

35. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

40. Yeast grows more rapidly in:

 
 
 
 

41. Plasmids are:

 
 
 
 

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

 
 
 
 

43. Spermatophyta are characterized by producing:

 
 
 
 

44. The leaf of Cycas shows:

 
 
 
 

45. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Little leaf disease of Brinjal is caused by:

 
 
 
 

52. Sexual reproduction of lichen is due to :

 
 
 
 

53. Vascular tissue is found in :

 
 
 
 

54. Diploxylic vascular bundles are found in:

 
 
 
 

55. Bacteria are considered to be plants because they:

 
 
 
 

56. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Embryophyta includes:

 
 
 
 

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

 
 
 
 

64. The DNA of E coli is:

 
 
 
 

65. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

67. Cap cells are found in the filament of:

 
 
 
 

68. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. 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:

 
 
 
 

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

 
 
 
 

77. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80.

 

81. True sexuality is not found in:

 
 
 
 

82. Which bacteria convert nitrate into nitrogen?

 
 
 
 

83. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

85. In Gymnosperms endosperm is a:

 
 
 
 

86. Viroids have:

 
 
 
 

87. The disease apple scab is caused by:

 
 
 
 

88. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

90. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Ulothrix produces :

 
 
 
 

95. First animal pathogenic virus was discovered by:

 
 
 
 

96. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

98. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

99. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

104. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Fern prothallus is:

 
 
 
 

110. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

117. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

119. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

121. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

122. Gram stain is used to:

 
 
 
 

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

 
 
 
 

124. Embryophyta includes :

 
 
 
 

125. Pinus is:

 
 
 
 

126. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

128. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

130. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

136. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

141. Red rot of sugarcane is caused by:

 
 
 
 

142. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

144. Bivalved siliceous shell or frustule occur in:

 
 
 
 

145. The first to isolate a plant virus was:

 
 
 
 

146. The fungi used as food are:

 
 
 
 

147. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

149. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

150. In Cycas the fertilization is:

 
 
 
 

151. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Black rust of wheat is caused by:

 
 
 
 

155. Cellular slime mold is:

 
 
 
 

156. Saccharomyces is used in:

 
 
 
 

157. Club moss and Peat moss belong to:

 
 
 
 

158. Lichens are ecologically important because :

 
 
 
 

159. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

160. The lichens growing on rocks are called :

 
 
 
 

161. Most primitive group of vascular plants are:

 
 
 
 

162. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Sporophyte of fern is:

 
 
 
 

167. The plants of Funaria grow :

 
 
 
 

168. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Funaria is :

 
 
 
 

172. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Enteric bacteria are those bacteria that live:

 
 
 
 

177. Bacteria growing on synthetic medium are called:

 
 
 
 

178. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

180. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Which one of the following statement is wrong?

 
 
 
 

184. The fern plant is:

 
 
 
 

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

 
 
 
 

186. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

187. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

189. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

194. Ovules are not found enclosed in ovary of:

 
 
 
 

195. Chemosynthetic bacteria are:

 
 
 
 

196. Most common type of conjugation in Spirogyra is :

 
 
 
 

197. The fungi that grow on wood are called:

 
 
 
 

198. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Vascular cryptogam is the term used for :

 
 
 
 

202. The development of sporangium in Selaginella is:

 
 
 
 

203. Reproduction in Rhizopus is:

 
 
 
 

204. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

206. Downy mildew disease is caused by :

 
 
 
 

207. Lichens show :

 
 
 
 

208. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

211. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Pasteur is famous for his:

 
 
 
 

218. The tallest moss in the world is :

 
 
 
 

219. In moss, peristomial teeth are:

 
 
 
 

220. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Select the wrong statement:

 
 
 
 

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

 
 
 
 

225. The sporophyte of Riccia is :

 
 
 
 

226. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

228. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

230. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

232. Cycas is different from mango in :

 
 
 
 

233. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

235. In Cycas which structure is equivalent to stamen?

 
 
 
 

236. Most of the algae are :

 
 
 
 

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

 
 
 
 

238. Yeast is a source of:

 
 
 
 

239. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. . Tapetum develops in:

 
 
 
 

243. Select the wrong statement:

 
 
 
 

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

 
 
 
 

245. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

249. Saccharomyces ludwigii ascus produces:

 
 
 
 

250. In dinoflagellates, the two flagella are:

 
 
 
 

251. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

253. The most important property of yeast is:

 
 
 
 

254. Fruiting body of lichens is :

 
 
 
 

255. The fungi are usually:

 
 
 
 

256. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Virion refers to:

 
 
 
 

260. 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:

 
 
 
 

261. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

263. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

264. Viruses are commonly transmitted in plants through:

 
 
 
 

265. Which organisms are the oldest life forms?

 
 
 
 

266. Fruits are not found in:

 
 
 
 

267. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Photoautotrophic bacteria have:

 
 
 
 

272. Bacteria were first discovered by:

 
 
 
 

273. Bacteria are placed under:

 
 
 
 

274. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

280. Which is a fungicide?

 
 
 
 

281. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

283. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

285. Clostridium can:

 
 
 
 

286. Penicillin was discovered by:

 
 
 
 

287. Pinus microsporophyll bears:

 
 
 
 

288. Cycas plant in appearance resembles :

 
 
 
 

289. Some diseases caused by bacteria are:

 
 
 
 

290. 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?

 
 
 
 

291. Which is a gametophytic tissue?

 
 
 
 

292. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

293. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. Pythium debaryanum is the causative agent of:

 
 
 
 

300. The zygospore in Rhizopus on germination forms:

 
 
 
 

301. Disease resistant plant varieties can be produced by :

 
 
 
 

302. The disease symptom necrosis refers to :

 
 
 
 

303. Nannandria are:

 
 
 
 

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

 
 
 
 

305. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Club moss is the common name of :

 
 
 
 

309. In Cycas:

 
 
 
 

310. The spur of Pinus roxburghii has :

 
 
 
 

311. A gill of Agaricus:

 
 
 
 

312. Which of the following is true for viruses?

 
 
 
 

313. Kuru, a human disease is caused by:

 
 
 
 

314. Most primitive kind of flower is represented by:

 
 
 
 

315. Which is not found in bacteria?

 
 
 
 

316. The antibiotic is obtained from:

 
 
 
 

317. The leaves of Funaria are :

 
 
 
 

318. Facultative parasite is:

 
 
 
 

319. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

321. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

324. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

326. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. The phloem of vascular system of Cycas is :

 
 
 
 

330. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

332. In moss, sporophyte is formed on:

 
 
 
 

333. Late blight of potato is caused by:

 
 
 
 

334. Liverworts are included in :

 
 
 
 

335. The rhizoids of Funaria are :

 
 
 
 

336. Iodine is obtained from :

 
 
 
 

337.

338. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

340. Streptomyces falls under:

 
 
 
 

341. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

343. Infective part of virus was discovered by:

 
 
 
 

344. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. Green plants are classified as:

 
 
 
 

352. Bentham and Hooker placed gymnosperms:

 
 
 
 

353. Viruses have:

 
 
 
 

354. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

355. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. What is mycorrhiza?

 
 
 
 

365. Male gametes in Dryopteris are:

 
 
 
 

366. Mycoplasma is different from bacteria due to:

 
 
 
 

367. Red rot of sugarcane is caused by :

 
 
 
 

368. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

369. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

371. Sporophyte of Funaria is :

 
 
 
 

372. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

374. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

376. Rhizoids of Riccia are :

 
 
 
 

377. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

379. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

381. The tree fern is:

 
 
 
 

382. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

384. The Rhizopus is:

 
 
 
 

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

 
 
 
 

386. Fruits are not found in :

 
 
 
 

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

 
 
 
 

388. Which causes red tide?

 
 
 
 

389. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

391. Spores of which plants have chloroplast:

 
 
 
 

392. The vascular bundles of Cycas stem are :

 
 
 
 

393. E coli is a:

 
 
 
 

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

 
 
 
 

395. Who discovered heterothallism in fungi?

 
 
 
 

396. Bacteriophage consists of:

 
 
 
 

397. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

399. In Funaria, calyptra is derived from :

 
 
 
 

400. Climbers are found in genus:

 
 
 
 

401. Acetobacter is useful in:

 
 
 
 

402. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

406. Water-borne bacterial diseases are:

 
 
 
 

407. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

417. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

419. Spirogyra represents the :

 
 
 
 

420. Rice, pea, potato are :

 
 
 
 

421. Which of the following are included in Tracheophyta?

 
 
 
 

422. The photosynthetic protists are:

 
 
 
 

423. Tautonyms are illegitimate in:

 
 
 
 

424. NBG of Lucknow is now named as:

 
 
 
 

425. Smallpox is caused by:

 
 
 
 

426. 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:

 
 
 
 

427. Common phycobiont in a lichen is :

 
 
 
 

428. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

430. Pteridophyta are also called:

 
 
 
 

431. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. The mycelium of Rhizopus is:

 
 
 
 

437. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

439. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

441. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

443. Pollination in Cycas takes place by :

 
 
 
 

444. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

446. Meristele of fern is:

 
 
 
 

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

 
 
 
 

448. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. Pinus gerardiana is :

 
 
 
 

454. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

456. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. The sporangia of Selaginella are attached:

 
 
 
 

463. Spermatophyta are characterized by producing:

 
 
 
 

464. Protistan algae obtain their food as:

 
 
 
 

465. Meiosis in Ulothrix takes place:

 
 
 
 

466. Banana bunchy top is caused by :

 
 
 
 

467. Nitrifying bacteria play an important role by converting:

 
 
 
 

468. Indusium in Dryopteris is:

 
 
 
 

469. Mucilaginous canals in Cycas are found in :

 
 
 
 

470. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. 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?

 
 
 
 

474. Oswald Tippo’s classification was based on :

 
 
 
 

475. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

477. The largest alga is:

 
 
 
 

478. The coralloid roots are :

 
 
 
 

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

 
 
 
 

480. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. The truncated cone of HIV consists of:

 
 
 
 

491. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. Usually, bacteria reproduce by:

 
 
 
 

495. The similarity between cyanobacteria and bacteria:

 
 
 
 

496. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

498. The largest known bacterium is:

 
 
 
 

499. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

501. Pythium debaryanum is the causative agent of:

 
 
 
 

502. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

504. One of the distinctive feature of Spirogyra is :

 
 
 
 

505. Ovules are not found enclosed in ovary in :

 
 
 
 

506. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

508. Proembryo in Pinus is :

 
 
 
 

509. Heterosporous pteridophytes always form:

 
 
 
 

510. Funaria is :

 
 
 
 

511. The lambda phase is a:

 
 
 
 

512. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

514. Sexual reproduction in Rhizopus is by:

 
 
 
 

515. Psilotum is:

 
 
 
 

516. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. Pollination drop is:

 
 
 
 

521. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

523. Which of the following statements is not correct?

 
 
 
 

524. John Hutchinson divided dicots into two divisions:

 
 
 
 

525. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

526. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

531. Botulism is a:

 
 
 
 

532. The ferns are usually found:

 
 
 
 

533. Sleeping sickness disease in man is caused by:

 
 
 
 

534. Bacteria are found everywhere, except:

 
 
 
 

535. What are Cyanobacteria?

 
 
 
 

536. Pneumonia is caused by:

 
 
 
 

537. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

542. Chief constituents of bordeaux mixture are :

 
 
 
 

543. Total parasites belong to:

 
 
 
 

544. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

548. Pollination in Pinus is :

 
 
 
 

549. In moss, reduction division occurs in :

 
 
 
 

550. Water-net is the name of:

 
 
 
 

551. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

553. 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:

 
 
 
 

554. The sporophyte of Riccia is represented by :

 
 
 
 

555. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Rhizopus belongs to:

 
 
 
 

561. Which one of the following is a monocot?

 
 
 
 

562.

563. Vascular cryptogams is the term used for:

 
 
 
 

564. The seedless plants which possess vascular tissues are:

 
 
 
 

565. The nucleus of bacteria is:

 
 
 
 

566. Halophiles are the bacteria that require for growth:

 
 
 
 

567. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

569. Asexual reproductive body of Volvox is called:

 
 
 
 

570. White rust of crucifers is caused by:

 
 
 
 

571. Some bacteria cannot be killed easily because of:

 
 
 
 

572. Oswald Tippo’s classification is:

 
 
 
 

573. Which of the following is a parasitic algae?

 
 
 
 

574. The Rhizopus gametes are formed in:

 
 
 
 

575. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

577. The smallest bacterium is:

 
 
 
 

578. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

579. The chromosomal number in:

 
 
 
 

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

 
 
 
 

581. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

583. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

585. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Which of the following shows heterotrichous habit?

 
 
 
 

590. Most resistant spore in bacteria is:

 
 
 
 

591. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

597. Discovery of penicillin was based on:

 
 
 
 

598. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

603. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

605. Bryophyta have been placed in cryptogams because:

 
 
 
 

606. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Protozoans are considered animals because these are:

 
 
 
 

610. The central part of Funaria axis is :

 
 
 
 

611. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

613. In tracheophyta:

 
 
 
 

614. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

616. Saccharomyces is well known for:

 
 
 
 

617. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. What is a vector?

 
 
 
 

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

 
 
 
 

622. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. In Funaria :

 
 
 
 

626. What is streptomycin?

 
 
 
 

627. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Black rust of wheat is caused by:

 
 
 
 

635. Mostly type of zygospore in Ulothrix is:

 
 
 
 

636. Which lichen is called Reindeer moss?

 
 
 
 

637. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. Which is a tautonym?

 
 
 
 

641. Small epidermal swellings due to infection are called :

 
 
 
 

642. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

644. Mixed cropping helps :

 
 
 
 

645. Cocci types of bacteria are:

 
 
 
 

646. The sexual reproductive organs in Rhizopus are:

 
 
 
 

647. Citrus canker is caused by :

 
 
 
 

648. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Which of the following is a monocot?

 
 
 
 

653. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

655. Ergot of rye is caused by:

 
 
 
 

656. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

658. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

660. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

663. The genetic material of poxvirus is:

 
 
 
 

664. The flagella of Chlamydomonas are:

 
 
 
 

665. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

666. Agar-agar is obtained from:

 
 
 
 

667. Pasteurization of milk involves heating for:

 
 
 
 

668. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

670. All algae have:

 
 
 
 

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

 
 
 
 

672. How is moss different from fern?

 
 
 
 

673. 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:

 
 
 
 

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

 
 
 
 

675. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

684. Streptomycin is obtained from:

 
 
 
 

685. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. The ascus of yeast contains:

 
 
 
 

689. Soil fertility is lost by the activities of:

 
 
 
 

690. Azolla growing in paddy fields helps in:

 
 
 
 

691. Iodine is obtained from:

 
 
 
 

692. Rhizophore of Selaginella is:

 
 
 
 

693. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. Longest known virus is:

 
 
 
 

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

 
 
 
 

699. Diphtheria is caused by:

 
 
 
 

700. The fungi are mostly:

 
 
 
 

701. Lichens form the first community in

 
 
 
 

702. Cyanophage is a virus that attacks:

 
 
 
 

703. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. The most primitive vascular plants is:

 
 
 
 

707. Which of the following is a heterosporous pteridophyte?

 
 
 
 

708. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Mycoplasma was discovered by:

 
 
 
 

712. Fern plants are:

 
 
 
 

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

 
 
 
 

714. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

716. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

718. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

720. Mycoplasmas are not viruses in nature because:

 
 
 
 

721. Enzymes are absent in:

 
 
 
 

722. Green plants are classified as :

 
 
 
 

723. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

725. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

727. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

728. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

730. Citrus canker is caused by:

 
 
 
 

731. Gymnosperms could also be called as:

 
 
 
 

732. Virus and bacteriophage are made-up of:

 
 
 
 

733. Who discovered cyanophages?

 
 
 
 

734. In a bacteriophage, DNA is present in:

 
 
 
 

735. The upper region of moss capsule is :

 
 
 
 

736. In moss, calyptra is formed from:

 
 
 
 

737. Broad spectrum antibiotic is, which:

 
 
 
 

738. Which fixes atmospheric nitrogen?

 
 
 
 

739. Ovary is absent in :

 
 
 
 

740. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

742. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

747. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. The gametophyte of fern bears:

 
 
 
 

753. The archegonia of Selaginella are differentiated by:

 
 
 
 

754. The roots of Cycas are :

 
 
 
 

755. Where does meiosis occur in yeast?

 
 
 
 

756. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

763. Early blight of potato is caused by:

 
 
 
 

764. Anoxygenic photosynthesis occurs in:

 
 
 
 

765. Generic name of mango is:

 
 
 
 

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

 
 
 
 

767. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

768. The middle sterile part of capsule is called:

 
 
 
 

769. Ovary is absent in:

 
 
 
 

770. Cycas is:

 
 
 
 

771. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

776. Botulinum toxin effects:

 
 
 
 

777. Which is not true for Escherichia coli?

 
 
 
 

778. Cycas is :

 
 
 
 

779. Redness of red sea is due to :

 
 
 
 

780. In a diplontic life cycle:

 
 
 
 

781. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

786. The orders generally have the uniform endings:

 
 
 
 

787. Water bloom is generally caused by :

 
 
 
 

788. Most appropriate word for protozoans is:

 
 
 
 

789. Lichen show :

 
 
 
 

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

 
 
 
 

791. Cryptogams include :

 
 
 
 

792. To which class Riccia belongs :

 
 
 
 

793. The zoospores of Ulothrix are :

 
 
 
 

794. Bryophyta have a special character from other plants:

 
 
 
 

795. Isomorphic type alternation of generation is found in:

 
 
 
 

796. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

801. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

808. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

813. The source of litmus is :

 
 
 
 

814. Protists which are diploid reproduce sexually by:

 
 
 
 

815. Who named prion?

 
 
 
 

816. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

818. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

820. Most of the lichens are composed of :

 
 
 
 

821. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

823. Leprosy is caused by:

 
 
 
 

824. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. In Pteris, the archegonia are present:

 
 
 
 

829. The prothallus of fern is:

 
 
 
 

830. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

833. Black rust of wheat is caused by:

 
 
 
 

834. Which of the following have a prokaryotic cell?

 
 
 
 

835. Who among the following discovered virus?

 
 
 
 

836. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

842. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

844. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

846. Azolla and Salvinia both are:

 
 
 
 

847. Which of the following are included in Tracheophyta?

 
 
 
 

848. Pseudomycelium is found in:

 
 
 
 

849.

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

 
 
 
 

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

 
 
 
 

852. Which of the following statement is correct?

 
 
 
 

853. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

855. The teeth of peristome of Funaria are :

 
 
 
 

856. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. In angiosperms double fertilization represents:

 
 
 
 

860. Which statement is wrong in regard to bacteria?

 
 
 
 

861. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

863. How a fern differs from a moss?

 
 
 
 

864. Metulae are found in: