Quiz_Random

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

 
 
 
 

2. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

3. Streptomycin is obtained from:

 
 
 
 

4. The fungi are usually:

 
 
 
 

5. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

7. Meiosis in Ulothrix takes place:

 
 
 
 

8. The coralloid roots are :

 
 
 
 

9. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

10. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Which is an exception to cell theory?

 
 
 
 

14. Which of the following does not contain chlorophyll?

 
 
 
 

15. Diploxylic vascular bundles are found in:

 
 
 
 

16. Interferon is a:

 
 
 
 

17. Methanogens belong to:

 
 
 
 

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

 
 
 
 

19. Which of the following is true for Selaginella?

 
 
 
 

20. The word “sea weeds” is used for:

 
 
 
 

21. The first to isolate a plant virus was:

 
 
 
 

22. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

23. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Penicillin was discovered by:

 
 
 
 

27. The rhizoids of Funaria are :

 
 
 
 

28. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

30. Placenta in fern is:

 
 
 
 

31. Vascular tissue is found in :

 
 
 
 

32. The most primitive vascular plants is:

 
 
 
 

33. Early blight of potato is caused by:

 
 
 
 

34.

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

 
 
 
 

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

 
 
 
 

37. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

39. Some bacteria cannot be killed easily because of:

 
 
 
 

40. Cryptogams include :

 
 
 
 

41. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

42. Cycas revoluta is widely grown as :

 
 
 
 

43. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

45. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

47. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

52. In Funaria :

 
 
 
 

53. Spermatophyta are characterized by producing:

 
 
 
 

54. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Disease resistant plant varieties can be produced by :

 
 
 
 

59. Lichens form the first community in

 
 
 
 

60. Which have the largest antherozoid?

 
 
 
 

61. Simple polyembryony is found in :

 
 
 
 

62. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

64. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. Which of the following shows heterotrichous habit?

 
 
 
 

71. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. Green plants are classified as:

 
 
 
 

75. Meristele of fern is:

 
 
 
 

76. Some biologists have used the term Mycetozoa for:

 
 
 
 

77. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

79. The antherozoids of Funaria are :

 
 
 
 

80. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

86. Oswald Tippo’s classification was based on :

 
 
 
 

87. Redness of red sea is due to :

 
 
 
 

88. Lichens reproduce by :

 
 
 
 

89. Winged pollen grains are found in :

 
 
 
 

90. Psilotum is:

 
 
 
 

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

 
 
 
 

92. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

93. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

95. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

97. Lichen show :

 
 
 
 

98. Cleavage polyembryony is found in :

 
 
 
 

99. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

101. Enzymes are absent in:

 
 
 
 

102. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

104. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. To which country Antony van Leeuwenhoek belong?

 
 
 
 

108. Pasteurization of milk involves heating for:

 
 
 
 

109. Which is a gametophytic tissue?

 
 
 
 

110. Water-net is the name of:

 
 
 
 

111. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Ginkgo biloba is a:

 
 
 
 

116. Which of the following statements is not correct?

 
 
 
 

117. Which group of algae have an incipient nucleus?

 
 
 
 

118. The largest alga is:

 
 
 
 

119. Germ theory of disease was proposed by:

 
 
 
 

120. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. Funaria can be differentiated from Cycas :

 
 
 
 

127. Which is a tautonym?

 
 
 
 

128. Acetobacter is useful in:

 
 
 
 

129. Fruits are not found in:

 
 
 
 

130. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

132. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

134. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Pinus gerardiana is :

 
 
 
 

138. The vascular bundles of Cycas stem are :

 
 
 
 

139. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

141. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

143. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

145. Liverworts are included in :

 
 
 
 

146. Botulism is a:

 
 
 
 

147. Which lichen is called Reindeer moss?

 
 
 
 

148. Facultative parasite is:

 
 
 
 

149. Infective part of virus was discovered by:

 
 
 
 

150. Virion refers to:

 
 
 
 

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

 
 
 
 

152. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

153. The order generally ends with:

 
 
 
 

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

 
 
 
 

155. Saccharomyces is used in:

 
 
 
 

156. 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:

 
 
 
 

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

 
 
 
 

158. Mycoplasma was discovered by:

 
 
 
 

159. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

163. Which is not found in bacteria?

 
 
 
 

164. Cycas is :

 
 
 
 

165. Which is a fungicide?

 
 
 
 

166. Mycoplasma are sensitive to:

 
 
 
 

167. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

169. In Cycas the fertilization is:

 
 
 
 

170. Yeast is a source of:

 
 
 
 

171. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

173. Parmelia belongs to :

 
 
 
 

174. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

176. In moss, stomata are found:

 
 
 
 

177. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

179. 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:

 
 
 
 

180. Which is a redwood tree?

 
 
 
 

181. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

182. In a diplontic life cycle:

 
 
 
 

183. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

189. Centric discoid form of diatom is:

 
 
 
 

190. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Nitrifying bacteria play an important role by converting:

 
 
 
 

195. Select the wrong statement:

 
 
 
 

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

 
 
 
 

197. Plasmids are:

 
 
 
 

198. Embryophyta includes:

 
 
 
 

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

 
 
 
 

200. The megasporangium of Selaginella is:

 
 
 
 

201. The source of litmus is :

 
 
 
 

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

 
 
 
 

203. Which part of Riccia bears nurse cells?

 
 
 
 

204. Banana bunchy top is caused by :

 
 
 
 

205. Most of the lichens are composed of :

 
 
 
 

206. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

208. The leaves of Funaria are :

 
 
 
 

209. Viruses have:

 
 
 
 

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

 
 
 
 

211. Most appropriate word for protozoans is:

 
 
 
 

212. Ovary is absent in:

 
 
 
 

213. Most resistant spore in bacteria is:

 
 
 
 

214. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Aflatoxin is produced by:

 
 
 
 

218. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. The truncated cone of HIV consists of:

 
 
 
 

226. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

231. Fairy ring is the name given to:

 
 
 
 

232. The smallest unit of classification is:

 
 
 
 

233. Etiology includes the study of :

 
 
 
 

234. Diphtheria is caused by:

 
 
 
 

235. Pollination in Cycas takes place by :

 
 
 
 

236. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

238. Cycas is:

 
 
 
 

239. In binomial system most of the words are:

 
 
 
 

240. Which one of the following is a monocot?

 
 
 
 

241. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

244. Bivalved siliceous shell or frustule occur in:

 
 
 
 

245. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

247. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

249. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

251. The disease symptom necrosis refers to :

 
 
 
 

252. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

254. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

256. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

258. Pasteur is famous for his:

 
 
 
 

259. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

261. The spur of Pinus roxburghii has :

 
 
 
 

262. The development of Selaginella embryo is:

 
 
 
 

263. 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?

 
 
 
 

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

 
 
 
 

265. Roots are absent in :

 
 
 
 

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

 
 
 
 

267. The mycelium of Rhizopus is:

 
 
 
 

268. NBG of Lucknow is now named as:

 
 
 
 

269. Embryo formation is not known in :

 
 
 
 

270. Virus and bacteriophage are made-up of:

 
 
 
 

271. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

276. Club moss and Peat moss belong to:

 
 
 
 

277. Red rot of sugarcane is caused by:

 
 
 
 

278. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

280. Climbers are found in genus:

 
 
 
 

281. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

283. The teeth of peristome of Funaria are :

 
 
 
 

284. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. The term stele was given by:

 
 
 
 

288. Which of the following have a prokaryotic cell?

 
 
 
 

289. How a fern differs from a moss?

 
 
 
 

290. The leaf of Cycas shows:

 
 
 
 

291. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. Which is absent from the xylem of Cycas?

 
 
 
 

296. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

298. 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:

 
 
 
 

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

 
 
 
 

300. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

302. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

304. Ectocarpus produces:

 
 
 
 

305. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Fern plants are:

 
 
 
 

310. Most of the algae are :

 
 
 
 

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

 
 
 
 

312. Spirogyra differs from moss protonema in having :

 
 
 
 

313. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

315. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Nannandria are:

 
 
 
 

320. Fern prothallus produces:

 
 
 
 

321. Mostly type of zygospore in Ulothrix is:

 
 
 
 

322. To which class Riccia belongs :

 
 
 
 

323. Which organisms are the oldest life forms?

 
 
 
 

324. Ovary is absent in :

 
 
 
 

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

 
 
 
 

326. The gametophyte of fern is as:

 
 
 
 

327. Multicellular and jacketed sex organs are found in :

 
 
 
 

328. Siphonogamy is found in:

 
 
 
 

329. Saccharomyces ludwigii ascus produces:

 
 
 
 

330. Embryophyta includes :

 
 
 
 

331. Rhizophore of Selaginella is:

 
 
 
 

332. In tracheophyta:

 
 
 
 

333. Rhizopus belongs to:

 
 
 
 

334. What is streptomycin?

 
 
 
 

335. All protozoans possess:

 
 
 
 

336. The gametophyte of moss has distinct phases :

 
 
 
 

337. Mucilaginous canals in Cycas are found in :

 
 
 
 

338. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

339. Circular DNA is seen in:

 
 
 
 

340. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

342. Reproduction in Rhizopus is:

 
 
 
 

343. Soil fertility is lost by the activities of:

 
 
 
 

344. Vegetative reproduction in Cycas is by means of :

 
 
 
 

345. Fern prothallus is:

 
 
 
 

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

 
 
 
 

347. Which of the following statement is correct?

 
 
 
 

348. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

350. Small epidermal swellings due to infection are called :

 
 
 
 

351. Iodine is obtained from:

 
 
 
 

352. In Herpes virus DNA is:

 
 
 
 

353. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

355. Ovules are not found enclosed in ovary in :

 
 
 
 

356. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. Lichens are pioneers of vegetation in a :

 
 
 
 

363. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. Botulinum toxin effects:

 
 
 
 

368. Total parasites belong to:

 
 
 
 

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

 
 
 
 

370. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

372. Cycas is different from mango in :

 
 
 
 

373. Reserve food in Euglena is:

 
 
 
 

374.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

390. Special feature of pollen grains of Pinus is :

 
 
 
 

391. Transfusion tissue is present in the leaflet of:

 
 
 
 

392. The ferns are usually found:

 
 
 
 

393. The chief characteristic of class Ascomycetes is:

 
 
 
 

394. Smut of maize is caused by :

 
 
 
 

395. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

397. Heterosporous pteridophytes always form:

 
 
 
 

398. Black rust of wheat is caused by:

 
 
 
 

399. How is moss different from fern?

 
 
 
 

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

 
 
 
 

401. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

403. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

415. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

419. Pasteurized milk is:

 
 
 
 

420. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

422. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

426. The tree fern is:

 
 
 
 

427. Economic importance of bacteria lies in their being:

 
 
 
 

428. Which of the following are included in Tracheophyta?

 
 
 
 

429. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

431. Where does meiosis occur in yeast?

 
 
 
 

432. Cellular slime mold is:

 
 
 
 

433. Quarantine regulations are concerned with:

 
 
 
 

434. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

436. Penicillin is obtained from:

 
 
 
 

437. The roots of Cycas are :

 
 
 
 

438. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

439. What is a vector?

 
 
 
 

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

 
 
 
 

441. Which of the following is a monocot?

 
 
 
 

442. Ergot of rye is caused by:

 
 
 
 

443. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

445. The Rhizopus is:

 
 
 
 

446. Bryophyta have been placed in cryptogams because:

 
 
 
 

447. The middle sterile part of capsule is called:

 
 
 
 

448. In Pteris, the archegonia are present:

 
 
 
 

449. Aflatoxin is produced as a product in :

 
 
 
 

450. Heterocysts are found in :

 
 
 
 

451. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. The microsporophylls on the cone of Cycas are :

 
 
 
 

455. In Selaginella, the microsporangia are:

 
 
 
 

456. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. Endemic plants are characterised by their:

 
 
 
 

460. Mycoplasma are:

 
 
 
 

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

 
 
 
 

462. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

465. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. The lambda phase is a:

 
 
 
 

470. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

472. Funaria is :

 
 
 
 

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

 
 
 
 

474. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

479. In dinoflagellates, the two flagella are:

 
 
 
 

480. Ergot is obtained from :

 
 
 
 

481. Sexual reproduction in Rhizopus is by:

 
 
 
 

482. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

487. Bentham and Hooker placed gymnosperms:

 
 
 
 

488. Male gametophyte of Selaginella is found:

 
 
 
 

489. Funaria is :

 
 
 
 

490. Fern phloem lacks:

 
 
 
 

491. In Pteris, the roots are:

 
 
 
 

492. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

494. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Indusium in Dryopteris is:

 
 
 
 

499. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

501. Male gametes in Dryopteris are:

 
 
 
 

502. Protistan algae obtain their food as:

 
 
 
 

503. The mode of nutrition of bacteria is usually:

 
 
 
 

504. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

511. Cocci types of bacteria are:

 
 
 
 

512. Pinus is:

 
 
 
 

513. The smallest bacterium is:

 
 
 
 

514. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

517. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

519. The stele of Dryopteris is a:

 
 
 
 

520. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

522. Which of the following have algal zone?

 
 
 
 

523. 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:

 
 
 
 

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

 
 
 
 

525. Citrus canker is caused by:

 
 
 
 

526. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

528. The chloroplast in Ulothrix is :

 
 
 
 

529. Which fixes atmospheric nitrogen?

 
 
 
 

530. Spores of which plants have chloroplast:

 
 
 
 

531. The spermatozoids of Cycas are :

 
 
 
 

532. Seeds are characteristically found in :

 
 
 
 

533. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

535.

 

536. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

544. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. The largest known bacterium is:

 
 
 
 

552. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

554. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

559. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

561. In Gymnosperms endosperm is a:

 
 
 
 

562. Which of the following is sago palm?

 
 
 
 

563. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. All algae have:

 
 
 
 

567. Chemosynthetic bacteria are:

 
 
 
 

568. Ethylene oxide is widely used to:

 
 
 
 

569. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

571. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Enteric bacteria are those bacteria that live:

 
 
 
 

577. Green plants are classified as :

 
 
 
 

578. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

580. Heterospory is the production of:

 
 
 
 

581. Lichens are ecologically important because :

 
 
 
 

582. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Which one of the following statement is wrong?

 
 
 
 

586. Fertility of the soil is increased by:

 
 
 
 

587. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

589. The sporophyte of Riccia is represented by :

 
 
 
 

590. John Hutchinson divided dicots into two divisions:

 
 
 
 

591. The ascus of yeast contains:

 
 
 
 

592. The upper region of moss capsule is :

 
 
 
 

593. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

598. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

602. In moss, calyptra is formed from:

 
 
 
 

603. Bacteria are placed under:

 
 
 
 

604. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. Generic name of mango is:

 
 
 
 

609. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. The lichens growing on rocks are called :

 
 
 
 

613. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

615. Viroids have:

 
 
 
 

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

 
 
 
 

617. The sporangium of fern contains nearly:

 
 
 
 

618. Wine turns sour because of:

 
 
 
 

619. Germination of the seed of Pinus is :

 
 
 
 

620. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

622. Majority of lichens are :

 
 
 
 

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

 
 
 
 

624. Clostridium can:

 
 
 
 

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

 
 
 
 

626. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. 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?

 
 
 
 

631. Rhizoids of Riccia are :

 
 
 
 

632. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. The archegonia in Selaginella develop on:

 
 
 
 

636. The sporangiophores in Rhizopus are:

 
 
 
 

637. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

639. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

640. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

642. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

645. The orders generally have the uniform endings:

 
 
 
 

646. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. The sori in Dryopteris are found on:

 
 
 
 

652. What is the role of nitrifying bacteria?

 
 
 
 

653. Bacteria were first discovered by:

 
 
 
 

654. Pteridophytes are also known as :

 
 
 
 

655. Bacteriophages have been used as:

 
 
 
 

656. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

659. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

663. Photoautotrophic bacteria have:

 
 
 
 

664. Little leaf disease of Brinjal is caused by:

 
 
 
 

665. The chromosomal number in:

 
 
 
 

666. In moss, reduction division occurs in :

 
 
 
 

667. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

669. Vascular cryptogam is the term used for :

 
 
 
 

670. Black rust of wheat is caused by:

 
 
 
 

671. Facultative saprophyte is:

 
 
 
 

672. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

674. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

676. The chief characteristic of bryophyta is that :

 
 
 
 

677. Acellular slime mold is/are:

 
 
 
 

678. Which is the correct statement about Selaginella?

 
 
 
 

679. Spirogyra represents the :

 
 
 
 

680. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

682. 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?

 
 
 
 

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

 
 
 
 

684. Viruses are considered to be:

 
 
 
 

685. An Hfr bacterium is one that contains:

 
 
 
 

686. Lichens are indicators of :

 
 
 
 

687. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

692. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. The role of meiosis is for:

 
 
 
 

699. In moss, sporophyte is formed on:

 
 
 
 

700. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. The disease apple scab is caused by:

 
 
 
 

706. Viruses are commonly transmitted in plants through:

 
 
 
 

707. Which of the following lichens is harmful?

 
 
 
 

708. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Azolla growing in paddy fields helps in:

 
 
 
 

712. Sporophyte of fern is:

 
 
 
 

713. Heterotrichous habit means :

 
 
 
 

714. Longest known virus is:

 
 
 
 

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

 
 
 
 

716. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

722. Which condition is found in Cycas?

 
 
 
 

723. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

726. Asexual reproductive body of Volvox is called:

 
 
 
 

727. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. 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:

 
 
 
 

731. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

735. Downy mildew disease is caused by :

 
 
 
 

736. TMV was isolated in crystalline form by:

 
 
 
 

737. Pollination drop is:

 
 
 
 

738. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

740. 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:

 
 
 
 

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

 
 
 
 

742. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

744. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

745. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. Photosynthetic bacteria have:

 
 
 
 

749. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. What is mycorrhiza?

 
 
 
 

756. Which of the following is a heterosporous pteridophyte?

 
 
 
 

757. Gram stain is used to:

 
 
 
 

758. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. In angiosperms double fertilization represents:

 
 
 
 

763. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

768. Mycoplasma is different from bacteria due to:

 
 
 
 

769. In moss, conducting tissue is made up of

 
 
 
 

770. Sporophyte of Funaria is :

 
 
 
 

771. Ulothrix produces :

 
 
 
 

772. Synzoospore is produced in:

 
 
 
 

773. Pinus microsporophyll bears:

 
 
 
 

774. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

777. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

779. The fungi used as food are:

 
 
 
 

780. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

782. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. Heterospory and ligulate leaves are a feature of:

 
 
 
 

787. Select the wrong statement:

 
 
 
 

788. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

790. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. The two conjugating gametangia of Rhizopus are:

 
 
 
 

794. The group algae possesses representatives belonging to kingdom:

 
 
 
 

795. Choose the correct statement about Spirogyra:

 
 
 
 

796. The chloroplast of Chlamydomonas are:

 
 
 
 

797. Maximum diversity of life forms occurs in :

 
 
 
 

798. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

800. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

802. The archegonia of Selaginella are differentiated by:

 
 
 
 

803. Most primitive embryophytes are placed in :

 
 
 
 

804. Chemosynthetic bacteria are:

 
 
 
 

805. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

807. Most primitive group of vascular plants are:

 
 
 
 

808. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

809. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

811. Lichens show :

 
 
 
 

812. Anoxygenic photosynthesis occurs in:

 
 
 
 

813. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

818. Yeast grows more rapidly in:

 
 
 
 

819.

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

 
 
 
 

821. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

823. Standard size of a herbarium sheet is:

 
 
 
 

824. The sporangia of Selaginella are attached:

 
 
 
 

825. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

833. The leafy fern plant represents the:

 
 
 
 

834. Bacteriophage consists of:

 
 
 
 

835. Isomorphic type alternation of generation is found in:

 
 
 
 

836. 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?

 
 
 
 

837. Bacteria differ from viruses in being sensitive to:

 
 
 
 

838. Water-borne bacterial diseases are:

 
 
 
 

839. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

841. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. Sometimes the bacterial cell is enclosed in:

 
 
 
 

849. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

850. LSD is:

 
 
 
 

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

 
 
 
 

852. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

854. Which of the following is true for viruses?

 
 
 
 

855. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

857. Agar-agar is obtained from:

 
 
 
 

858. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

860. Which of the following are included in Tracheophyta?

 
 
 
 

861. Gametophyte is the main plant body in :

 
 
 
 

862. 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:

 
 
 
 

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

 
 
 
 

864. Zoogametes are not found in: