Quiz_Random

1. Embryophyta includes:

 
 
 
 

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

 
 
 
 

3. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. The central part of Funaria axis is :

 
 
 
 

8. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

10. Viruses are commonly transmitted in plants through:

 
 
 
 

11. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

13. The chief characteristic of bryophyta is that :

 
 
 
 

14. Streptomyces falls under:

 
 
 
 

15. Heterotrichous habit means :

 
 
 
 

16. Select the wrong statement:

 
 
 
 

17. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

25. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

27. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

28. Spermatophyta are characterized by producing:

 
 
 
 

29. Multicellular and jacketed sex organs are found in :

 
 
 
 

30. Which is absent from the xylem of Cycas?

 
 
 
 

31. Redness of red sea is due to :

 
 
 
 

32. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

34. Lichens are pioneers of vegetation in a :

 
 
 
 

35. Mycoplasma contains:

 
 
 
 

36. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

38. Typhoid in man is caused by:

 
 
 
 

39. The sporophyte of Riccia is :

 
 
 
 

40. Most common type of conjugation in Spirogyra is :

 
 
 
 

41. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

43. Vascular cryptogams is the term used for:

 
 
 
 

44. White rust of crucifers is caused by:

 
 
 
 

45. Red rot of sugarcane is caused by :

 
 
 
 

46. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. The spur of Pinus roxburghii has :

 
 
 
 

50. Who discovered heterothallism in fungi?

 
 
 
 

51. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

55. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

57. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Water-net is the name of:

 
 
 
 

65. What is streptomycin?

 
 
 
 

66. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

68. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

70. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

72. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

74. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

76. 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:

 
 
 
 

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

 
 
 
 

78. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

80. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

82. Mucilaginous canals in Cycas are found in :

 
 
 
 

83. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

85. Heterosporous pteridophytes always form:

 
 
 
 

86. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

88. Oswald Tippo’s classification is:

 
 
 
 

89. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Virus and bacteriophage are made-up of:

 
 
 
 

93. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Black rust of wheat is caused by:

 
 
 
 

97. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

99. Which organisms are the oldest life forms?

 
 
 
 

100. In tracheophyta:

 
 
 
 

101. Some biologists have used the term Mycetozoa for:

 
 
 
 

102.

 

103. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. 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:

 
 
 
 

107. Pinus microsporophyll bears:

 
 
 
 

108. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

120. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

122. The leaves of Funaria are :

 
 
 
 

123. Majority of lichens are :

 
 
 
 

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

 
 
 
 

125. The genetic material of poxvirus is:

 
 
 
 

126. Most primitive kind of flower is represented by:

 
 
 
 

127. John Hutchinson divided dicots into two divisions:

 
 
 
 

128. Which is a gametophytic tissue?

 
 
 
 

129. Which of the following is a monocot?

 
 
 
 

130. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

132. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

134. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

136. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Which of the following have a prokaryotic cell?

 
 
 
 

141. What is the role of nitrifying bacteria?

 
 
 
 

142. Funaria are commonly found :

 
 
 
 

143. Which part of Riccia bears nurse cells?

 
 
 
 

144. Aflatoxin is produced as a product in :

 
 
 
 

145. Generic name of mango is:

 
 
 
 

146. Centric discoid form of diatom is:

 
 
 
 

147. Bacteria are found everywhere, except:

 
 
 
 

148. Transfusion tissue is present in the leaflet of:

 
 
 
 

149.

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

 
 
 
 

151. Nitrifying bacteria play an important role by converting:

 
 
 
 

152. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

154. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

156. In moss, conducting tissue is made up of

 
 
 
 

157. The young leaves of Cycas have :

 
 
 
 

158. Select the wrong statement:

 
 
 
 

159. Pollination in Pinus is :

 
 
 
 

160. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Rhizopus and yeast are usually:

 
 
 
 

165. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

167. Most primitive embryophytes are placed in :

 
 
 
 

168. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

170. Anoxygenic photosynthesis occurs in:

 
 
 
 

171. Citrus canker is caused by:

 
 
 
 

172. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

174. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

175. What are plasmids?

 
 
 
 

176. Ovary is absent in:

 
 
 
 

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

 
 
 
 

178. The chief characteristic of class Ascomycetes is:

 
 
 
 

179. Leprosy is caused by:

 
 
 
 

180. Water-borne bacterial diseases are:

 
 
 
 

181. Which of the following is sago palm?

 
 
 
 

182. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

186. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

188. Fern prothallus produces:

 
 
 
 

189. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Ovules are not found enclosed in ovary in :

 
 
 
 

193. Pneumonia is caused by:

 
 
 
 

194. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

195. Chemosynthetic bacteria are:

 
 
 
 

196. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. The upper region of moss capsule is :

 
 
 
 

202. Ovules are not found enclosed in ovary in :

 
 
 
 

203. The orders generally have the uniform endings:

 
 
 
 

204. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

206. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

208. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

211. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. Enteric bacteria are those bacteria that live:

 
 
 
 

215. Cryptogams include :

 
 
 
 

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

 
 
 
 

217. Smut of maize is caused by :

 
 
 
 

218. The development of Selaginella embryo is:

 
 
 
 

219. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

221. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

231. NBG of Lucknow is now named as:

 
 
 
 

232. Yeast belongs to class:

 
 
 
 

233. The similarity between cyanobacteria and bacteria:

 
 
 
 

234. Quarantine regulations are concerned with:

 
 
 
 

235. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Roots are absent in :

 
 
 
 

239. Genetic material of TMV is:

 
 
 
 

240. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

242. Bacteria are considered to be plants because they:

 
 
 
 

243. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. In Gymnocarpeae the fruiting body is :

 
 
 
 

248. Germination of the seed of Pinus is :

 
 
 
 

249. Pinus is:

 
 
 
 

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

 
 
 
 

251. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

253. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

255. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

262. In binomial system most of the words are:

 
 
 
 

263. Broad spectrum antibiotic is, which:

 
 
 
 

264. Among the algae kelps are :

 
 
 
 

265. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

267. The sporangium of fern contains nearly:

 
 
 
 

268. 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:

 
 
 
 

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

 
 
 
 

270. The largest known bacterium is:

 
 
 
 

271. Sexual reproduction of lichen is due to :

 
 
 
 

272. Bivalved siliceous shell or frustule occur in:

 
 
 
 

273. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

279. Botulinum toxin effects:

 
 
 
 

280. Rhizopus belongs to:

 
 
 
 

281. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. Pollination in Cycas takes place by :

 
 
 
 

285. Discovery of penicillin was based on:

 
 
 
 

286. Sexual reproduction in Rhizopus is by:

 
 
 
 

287. Which of the following are included in Tracheophyta?

 
 
 
 

288. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

298. Which of the following statement is correct?

 
 
 
 

299. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

301. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

303. Red rot of sugarcane is caused by :

 
 
 
 

304. . Tapetum develops in:

 
 
 
 

305. Funaria is a Bryophyta because :

 
 
 
 

306. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Metulae are found in:

 
 
 
 

310. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

312. Which of the following is a heterosporous pteridophyte?

 
 
 
 

313. E coli is a:

 
 
 
 

314. The coralloid roots are :

 
 
 
 

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

 
 
 
 

316. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

317. What is absent in Deuteromycetes?

 
 
 
 

318. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Small epidermal swellings due to infection are called :

 
 
 
 

323. Absorptive nutrition is:

 
 
 
 

324. Which among the following is a shrub?

 
 
 
 

325. 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?

 
 
 
 

326. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Synzoospore is produced in:

 
 
 
 

330. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Saccharomyces ludwigii ascus produces:

 
 
 
 

336. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

345. Which of the following lichens is harmful?

 
 
 
 

346. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

348. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

350. Male gametophyte of Selaginella is found:

 
 
 
 

351. Nannandria are:

 
 
 
 

352. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. The gametophyte of fern is as:

 
 
 
 

356. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

358. Special feature of pollen grains of Pinus is :

 
 
 
 

359. The two conjugating gametangia of Rhizopus are:

 
 
 
 

360. Circular DNA is seen in:

 
 
 
 

361. Meristele of fern is:

 
 
 
 

362. Wine turns sour because of:

 
 
 
 

363. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

365. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Total parasites belong to:

 
 
 
 

373. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

385. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

387. True sexuality is not found in:

 
 
 
 

388. Rhizoids of Riccia are :

 
 
 
 

389. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

392. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

394. Chemosynthetic bacteria are:

 
 
 
 

395. Which of the following does not contain chlorophyll?

 
 
 
 

396. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

397. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

399. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

400. Yeast is a source of:

 
 
 
 

401. Black rust of wheat is caused by:

 
 
 
 

402. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. LSD is:

 
 
 
 

406. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. Virion refers to:

 
 
 
 

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

 
 
 
 

413. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

415. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

417. The plants of Funaria grow :

 
 
 
 

418. Soil fertility is lost by the activities of:

 
 
 
 

419. Cap cells are found in the filament of:

 
 
 
 

420. Cycas is :

 
 
 
 

421. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

423. Where does meiosis occur in yeast?

 
 
 
 

424. Kuru, a human disease is caused by:

 
 
 
 

425. Embryo formation is not known in :

 
 
 
 

426. Gram stain is used to:

 
 
 
 

427. A gill of Agaricus:

 
 
 
 

428. Fruits are not found in :

 
 
 
 

429. Red rot of sugarcane is caused by:

 
 
 
 

430. Chief constituents of bordeaux mixture are :

 
 
 
 

431. Green plants are classified as :

 
 
 
 

432. The tree fern is:

 
 
 
 

433. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

435. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

436. What is a vector?

 
 
 
 

437. Infective part of virus was discovered by:

 
 
 
 

438. Penicillin is obtained from:

 
 
 
 

439. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

449. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

454. Gametophyte is the main plant body in :

 
 
 
 

455. The fungi are usually:

 
 
 
 

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

 
 
 
 

457. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

459. Disease resistant plant varieties can be produced by :

 
 
 
 

460. Funaria is :

 
 
 
 

461. The sporangia of Selaginella are attached:

 
 
 
 

462. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

464. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

466. Water bloom is generally caused by :

 
 
 
 

467. The mode of nutrition of bacteria is usually:

 
 
 
 

468. Botulism is a:

 
 
 
 

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

 
 
 
 

470. Fruits are not found in Cycas because:

 
 
 
 

471. The microsporophylls on the cone of Cycas are :

 
 
 
 

472. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Spirogyra represents the :

 
 
 
 

476. Which of the following is true for Selaginella?

 
 
 
 

477. The role of meiosis is for:

 
 
 
 

478. In Cycas which structure is equivalent to stamen?

 
 
 
 

479. The middle sterile part of capsule is called:

 
 
 
 

480. Cycas is similar to a mustard plant :

 
 
 
 

481. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

487. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. Which is a fungicide?

 
 
 
 

491. Aflatoxin is produced by:

 
 
 
 

492. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

494. The disease symptom necrosis refers to :

 
 
 
 

495. Seeds are characteristically found in :

 
 
 
 

496. In moss, calyptra is formed from:

 
 
 
 

497. The sporophyte of Riccia is represented by :

 
 
 
 

498. The disease apple scab is caused by:

 
 
 
 

499. Which is a tautonym?

 
 
 
 

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

 
 
 
 

501. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

503. The term stele was given by:

 
 
 
 

504. The ferns are usually found:

 
 
 
 

505. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Protists which are diploid reproduce sexually by:

 
 
 
 

509. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Psilotum is:

 
 
 
 

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

 
 
 
 

515. In Herpes virus DNA is:

 
 
 
 

516. The group algae possesses representatives belonging to kingdom:

 
 
 
 

517. Viruses are considered to be:

 
 
 
 

518. The teeth of peristome of Funaria are :

 
 
 
 

519. Cyathia is characterized by:

 
 
 
 

520. Antibiotics cure the disease by:

 
 
 
 

521. First animal pathogenic virus was discovered by:

 
 
 
 

522. Which lichen is called Reindeer moss?

 
 
 
 

523. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

525. Ergot is obtained from :

 
 
 
 

526. Bacteria differ from viruses in being sensitive to:

 
 
 
 

527. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

529. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

531. Lichens show :

 
 
 
 

532. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

537. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

539. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

541. The phloem of vascular system of Cycas is :

 
 
 
 

542. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. Green plants are classified as:

 
 
 
 

546. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

548. What is special feature of fern archegonia?

 
 
 
 

549. Heterocysts are found in :

 
 
 
 

550. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

552. Milk is converted to curd by:

 
 
 
 

553. Which is an edible fungus?

 
 
 
 

554. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

556. Antibiotic has been extracted from :

 
 
 
 

557. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

559. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Which condition is found in Cycas?

 
 
 
 

563. Pasteurization of milk involves heating for:

 
 
 
 

564. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

565. Iodine is obtained from :

 
 
 
 

566. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. Siphonogamy is found in:

 
 
 
 

570. 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?

 
 
 
 

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

 
 
 
 

572. Vascular tissue is found in :

 
 
 
 

573. Isomorphic type alternation of generation is found in:

 
 
 
 

574. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

575. The archegonia of Selaginella are differentiated by:

 
 
 
 

576. Embryophyta includes :

 
 
 
 

577. Pteridophyta are also called:

 
 
 
 

578. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

580. 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?

 
 
 
 

581. Which of the following have algal zone?

 
 
 
 

582. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

584. Fern prothallus is:

 
 
 
 

585. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

590. Acetobacter is useful in:

 
 
 
 

591. Cycas plant in appearance resembles :

 
 
 
 

592. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

594. How is moss different from fern?

 
 
 
 

595. Mycoplasma are:

 
 
 
 

596. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

600. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

602. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. 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:

 
 
 
 

606. The fungi are mostly:

 
 
 
 

607. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

609. The zygospore in Rhizopus on germination forms:

 
 
 
 

610. The root nodules of leguminous plants contain:

 
 
 
 

611. Cleavage polyembryony is found in :

 
 
 
 

612. All protozoans possess:

 
 
 
 

613. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Climbers are found in genus:

 
 
 
 

620. The fungi used as food are:

 
 
 
 

621. All archaebacteria lack:

 
 
 
 

622. Interferon is a:

 
 
 
 

623. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

625. Cycas is different from mango in :

 
 
 
 

626. The leaf of Cycas shows:

 
 
 
 

627. Diphtheria is caused by:

 
 
 
 

628. Seeds are characteristically found in:

 
 
 
 

629. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

630. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

632. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. Fruits are not found in:

 
 
 
 

636. The alga, Spirogyra are found in :

 
 
 
 

637. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. The source of litmus is :

 
 
 
 

641. Sporophyte of fern is:

 
 
 
 

642. 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:

 
 
 
 

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

 
 
 
 

644. Saccharomyces is used in:

 
 
 
 

645. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Bacteria growing on synthetic medium are called:

 
 
 
 

649. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

651. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

653. In dinoflagellates, the two flagella are:

 
 
 
 

654. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

656. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

658. The order generally ends with:

 
 
 
 

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

 
 
 
 

660. Which is an exception to cell theory?

 
 
 
 

661. The Rhizopus gametes are formed in:

 
 
 
 

662. The chromosomal number in:

 
 
 
 

663. Fairy ring is the name given to:

 
 
 
 

664. Winged pollen grains are found in :

 
 
 
 

665. All algae have:

 
 
 
 

666. Rhizophore of Selaginella is:

 
 
 
 

667. Coenogamete is found in:

 
 
 
 

668. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. Methanogens belong to:

 
 
 
 

672. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

678. Nitrogen-fixing bacteria may be located:

 
 
 
 

679. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. How a fern differs from a moss?

 
 
 
 

688. The sori in Dryopteris are found on:

 
 
 
 

689. The fungi that grow on wood are called:

 
 
 
 

690. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

692. The megasporangium of Selaginella is:

 
 
 
 

693. Ergot of rye is caused by:

 
 
 
 

694. The largest alga is:

 
 
 
 

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

 
 
 
 

696. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

697. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

699. Maximum diversity of life forms occurs in :

 
 
 
 

700. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

708. Viruses have:

 
 
 
 

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

 
 
 
 

710. Which of the following are absent in Mycoplasma?

 
 
 
 

711. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

713. Downy mildew disease is caused by :

 
 
 
 

714. Each chloroplast in Spirogyra bears :

 
 
 
 

715. In Pteris, the archegonia are present:

 
 
 
 

716. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

719. Who discovered cyanophages?

 
 
 
 

720. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Black rust of wheat is caused by:

 
 
 
 

729. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

731. In Gymnosperms endosperm is a:

 
 
 
 

732. Bryophyta have been placed in cryptogams because:

 
 
 
 

733. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

741. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

743. Enzymes are absent in:

 
 
 
 

744. Pollination drop is:

 
 
 
 

745. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

746. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

748. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

750. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

752. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

754. The Rhizopus is:

 
 
 
 

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

 
 
 
 

756. In moss, sporogenous tissue arises from:

 
 
 
 

757. TMV was isolated in crystalline form by:

 
 
 
 

758. Most of the algae are :

 
 
 
 

759. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

764. 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:

 
 
 
 

765. Which one of the following statement is wrong?

 
 
 
 

766. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

768. Sometimes the bacterial cell is enclosed in:

 
 
 
 

769. Ovary is absent in :

 
 
 
 

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

 
 
 
 

771. Which one of the following is a monocot?

 
 
 
 

772. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. Winged seeds are found in :

 
 
 
 

780. Germ theory of disease was proposed by:

 
 
 
 

781. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. The zoospores of Ulothrix are :

 
 
 
 

787. Bentham and Hooker placed gymnosperms:

 
 
 
 

788. Spores of which plants have chloroplast:

 
 
 
 

789. Parmelia belongs to :

 
 
 
 

790. Triple antigen injection or vaccine are for:

 
 
 
 

791. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Fern phloem lacks:

 
 
 
 

795. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

797. In angiosperms double fertilization represents:

 
 
 
 

798. Pasteur is famous for his:

 
 
 
 

799.

800. Early blight of potato is caused by:

 
 
 
 

801. Mycoplasma is different from bacteria due to:

 
 
 
 

802. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

804. Cell walls of Gram-positive bacteria contain:

 
 
 
 

805. Clostridium can:

 
 
 
 

806. Liverworts are included in :

 
 
 
 

807. Ethylene oxide is widely used to:

 
 
 
 

808. Cycas is:

 
 
 
 

809. The fern plant is:

 
 
 
 

810. Which bacteria convert nitrate into nitrogen?

 
 
 
 

811. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

813. Pinus gerardiana is :

 
 
 
 

814. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

816. Which of the following shows heterotrichous habit?

 
 
 
 

817. 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?

 
 
 
 

818. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

819. Zoogametes are not found in:

 
 
 
 

820. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

822. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Bacteriophages have been used as:

 
 
 
 

827. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. Facultative parasite is:

 
 
 
 

831. Placenta in fern is:

 
 
 
 

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

 
 
 
 

833. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

835. Longest known virus is:

 
 
 
 

836. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

838. The sexual reproductive organs in Rhizopus are:

 
 
 
 

839. Which is a redwood tree?

 
 
 
 

840. Leaf spot of groundnut is caused by :

 
 
 
 

841. Agar-agar is obtained from:

 
 
 
 

842. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

847. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850.

851. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. In moss, reduction division occurs in :

 
 
 
 

858. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Lichen show :

 
 
 
 

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

 
 
 
 

864. Indusium in Dryopteris is: