Quiz_Random

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

 
 
 
 

2. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. Which of the following is a parasitic algae?

 
 
 
 

6. Fruiting body of lichens is :

 
 
 
 

7. Fern phloem lacks:

 
 
 
 

8. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

10. Diphtheria is caused by:

 
 
 
 

11. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

13. What is special feature of fern archegonia?

 
 
 
 

14. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

20. Botulism is a:

 
 
 
 

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

 
 
 
 

22. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

24. The sexual reproductive organs in Rhizopus are:

 
 
 
 

25. The genetic material of poxvirus is:

 
 
 
 

26. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

28. Enzymes are absent in:

 
 
 
 

29. Which statement is wrong in regard to bacteria?

 
 
 
 

30. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

36. Triple antigen injection or vaccine are for:

 
 
 
 

37. Funaria are commonly found :

 
 
 
 

38. Water-borne bacterial diseases are:

 
 
 
 

39. Downy mildew disease is caused by :

 
 
 
 

40. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

46. Sexual reproduction in Rhizopus is by:

 
 
 
 

47. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. Water bloom is generally caused by :

 
 
 
 

51. Ergot is obtained from :

 
 
 
 

52. The gametophyte produced by apospory is :

 
 
 
 

53. The gametophyte of fern bears:

 
 
 
 

54. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

56. In moss, peristomial teeth are:

 
 
 
 

57. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

59. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

60. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

65. Anoxygenic photosynthesis occurs in:

 
 
 
 

66. Zoogametes are not found in:

 
 
 
 

67.

68. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

70. The upper region of moss capsule is :

 
 
 
 

71. 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?

 
 
 
 

72. Cycas is similar to a mustard plant :

 
 
 
 

73. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

75. Banana bunchy top is caused by :

 
 
 
 

76. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

78. Milk is converted to curd by:

 
 
 
 

79. The alga, Spirogyra are found in :

 
 
 
 

80. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

82. Club moss and Peat moss belong to:

 
 
 
 

83. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

85. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

87. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

89. Which of the following is a heterosporous pteridophyte?

 
 
 
 

90. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

92. Red rot of sugarcane is caused by :

 
 
 
 

93. Iodine is obtained from:

 
 
 
 

94. Mycoplasma are:

 
 
 
 

95. Most resistant spore in bacteria is:

 
 
 
 

96. Interferon is a:

 
 
 
 

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

 
 
 
 

98. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. The development of sporangium in Selaginella is:

 
 
 
 

102. The fungi are usually:

 
 
 
 

103. In Funaria, calyptra is derived from :

 
 
 
 

104. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. The role of meiosis is for:

 
 
 
 

108. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

110. Mycoplasma is different from bacteria due to:

 
 
 
 

111. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

114. In dinoflagellates, the two flagella are:

 
 
 
 

115. Spirogyra represents the :

 
 
 
 

116. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

118. In Pteris, the archegonia are present:

 
 
 
 

119. Rhizopus and yeast are usually:

 
 
 
 

120. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. The spermatozoids of Cycas are :

 
 
 
 

125. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Methanogens belong to:

 
 
 
 

129. Detailed study of bacteriophage was made by:

 
 
 
 

130. All protozoans possess:

 
 
 
 

131. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

133. The chloroplast in Ulothrix is :

 
 
 
 

134. Select the wrong statement:

 
 
 
 

135. Which of the following does not contain chlorophyll?

 
 
 
 

136. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

141. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

143. The two conjugating gametangia of Rhizopus are:

 
 
 
 

144. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

146. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

148. Redness of red sea is due to :

 
 
 
 

149. Standard size of a herbarium sheet is:

 
 
 
 

150. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

151. Which is a redwood tree?

 
 
 
 

152. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

154. Some biologists have used the term Mycetozoa for:

 
 
 
 

155. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

162. Which of the following are included in Tracheophyta?

 
 
 
 

163. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Select the correct statement: (NEET 2016)

 
 
 
 

167. Lichens are pioneers of vegetation in a :

 
 
 
 

168. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

170. Broad spectrum antibiotic is, which:

 
 
 
 

171. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

173. In moss, reduction division occurs in :

 
 
 
 

174. In moss, stomata are found:

 
 
 
 

175. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

176. Synzoospore is produced in:

 
 
 
 

177. Vascular cryptogams is the term used for:

 
 
 
 

178. Diploxylic vascular bundles are found in:

 
 
 
 

179. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

181. In moss, calyptra is formed from:

 
 
 
 

182. The sporangiophores in Rhizopus are:

 
 
 
 

183. Placenta in fern is:

 
 
 
 

184. Plasmids are:

 
 
 
 

185. Male gametophyte of Selaginella is found:

 
 
 
 

186. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

188. Climbers are found in genus:

 
 
 
 

189. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

194. What is mycorrhiza?

 
 
 
 

195. Halophiles are the bacteria that require for growth:

 
 
 
 

196. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

198. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

203. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

205. 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:

 
 
 
 

206. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

211. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

213. Cleavage polyembryony is found in :

 
 
 
 

214. Leprosy is caused by:

 
 
 
 

215. Funaria is a Bryophyta because :

 
 
 
 

216. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

218. Sexual reproduction of lichen is due to :

 
 
 
 

219. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. Which causes red tide?

 
 
 
 

226. The leaves of Funaria are :

 
 
 
 

227. Fern plants are:

 
 
 
 

228. Which of the following have a prokaryotic cell?

 
 
 
 

229. Citrus canker is caused by:

 
 
 
 

230. Saccharomyces is well known for:

 
 
 
 

231. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Pseudomycelium is found in:

 
 
 
 

240. Green plants are classified as :

 
 
 
 

241. Chief constituents of bordeaux mixture are :

 
 
 
 

242. What are Cyanobacteria?

 
 
 
 

243. Reserve food in Euglena is:

 
 
 
 

244. Pinus microsporophyll bears:

 
 
 
 

245. Winged seeds are found in :

 
 
 
 

246. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

250. Absorptive nutrition is:

 
 
 
 

251.

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

 
 
 
 

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

 
 
 
 

254. The plants of Funaria grow :

 
 
 
 

255. Viroids have:

 
 
 
 

256. Isomorphic type alternation of generation is found in:

 
 
 
 

257. Spermatophyta are characterized by producing:

 
 
 
 

258. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Roots are absent in :

 
 
 
 

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

 
 
 
 

264. Most common type of conjugation in Spirogyra is :

 
 
 
 

265. Helotism word is used for the symbiosis between :

 
 
 
 

266. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

272. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. An Hfr bacterium is one that contains:

 
 
 
 

280. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

292. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. Funaria is :

 
 
 
 

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

 
 
 
 

297. 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:

 
 
 
 

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

 
 
 
 

299. Pollination drop is:

 
 
 
 

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

 
 
 
 

301. Psilotum is:

 
 
 
 

302. Red rot of sugarcane is caused by:

 
 
 
 

303. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

305. Some diseases caused by bacteria are:

 
 
 
 

306. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

308. In tracheophyta:

 
 
 
 

309. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

311. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

313. The term stele was given by:

 
 
 
 

314. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

315. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

316. Total parasites belong to:

 
 
 
 

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

 
 
 
 

318. The megasporangium of Selaginella is:

 
 
 
 

319. Bivalved siliceous shell or frustule occur in:

 
 
 
 

320. In Funaria :

 
 
 
 

321. Black rust of wheat is caused by:

 
 
 
 

322. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Endemic plants are characterised by their:

 
 
 
 

326. Rhizophore of Selaginella is:

 
 
 
 

327. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Meristele of fern is:

 
 
 
 

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

 
 
 
 

332. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. The megaspore of Selaginella on germination produces:

 
 
 
 

340. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Which of the following are included in Tracheophyta?

 
 
 
 

346. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. What is streptomycin?

 
 
 
 

351. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

353. E coli is a:

 
 
 
 

354. Oswald Tippo’s classification was based on :

 
 
 
 

355. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

357. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

359. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

361. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

363. The smallest unit of classification is:

 
 
 
 

364. Yeast is a source of:

 
 
 
 

365. Kuru, a human disease is caused by:

 
 
 
 

366. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Ovary is absent in:

 
 
 
 

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

 
 
 
 

372. Pythium debaryanum is the causative agent of:

 
 
 
 

373. Cycas is:

 
 
 
 

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

 
 
 
 

375. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Fruits are not found in :

 
 
 
 

380. Lichens reproduce by :

 
 
 
 

381. Which bacteria convert nitrate into nitrogen?

 
 
 
 

382. Who among the following discovered virus?

 
 
 
 

383. Pasteurization of milk involves heating for:

 
 
 
 

384. Simple polyembryony is found in :

 
 
 
 

385. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

387. In a bacteriophage, DNA is present in:

 
 
 
 

388. Which organisms are the oldest life forms?

 
 
 
 

389. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Majority of lichens are :

 
 
 
 

394. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

396. Green plants are classified as:

 
 
 
 

397. The lichens growing on rocks are called :

 
 
 
 

398. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

400. Lichen show :

 
 
 
 

401. Cap cells are found in the filament of:

 
 
 
 

402. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. Desired type of Cycas can be grown by:

 
 
 
 

406. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. The Rhizopus is:

 
 
 
 

410. Oswald Tippo’s classification is:

 
 
 
 

411. Citrus canker is caused by :

 
 
 
 

412. Meiosis in Ulothrix takes place:

 
 
 
 

413. Viruses have:

 
 
 
 

414. Liverworts are included in :

 
 
 
 

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

 
 
 
 

416. Which of the following shows heterotrichous habit?

 
 
 
 

417. Which is not found in bacteria?

 
 
 
 

418. The disease apple scab is caused by:

 
 
 
 

419. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. Fruits are not found in Cycas because:

 
 
 
 

423. Facultative saprophyte is:

 
 
 
 

424. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

426. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

428. The tallest moss in the world is :

 
 
 
 

429. Smut of maize is caused by :

 
 
 
 

430. Select the wrong statement:

 
 
 
 

431. Circular DNA is seen in:

 
 
 
 

432. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

434. The fungi are mostly:

 
 
 
 

435. Nitrifying bacteria play an important role by converting:

 
 
 
 

436. Red rot of sugarcane is caused by :

 
 
 
 

437. The lambda phase is a:

 
 
 
 

438. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. The leaves of Funaria are :

 
 
 
 

442. Yeast belongs to class:

 
 
 
 

443. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

445. Male gametes in Dryopteris are:

 
 
 
 

446. Azolla and Salvinia both are:

 
 
 
 

447. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

449. Ergot of rye is caused by:

 
 
 
 

450. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

452. How a fern differs from a moss?

 
 
 
 

453. Which of the following is sago palm?

 
 
 
 

454. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

456. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

458. The antibiotic is obtained from:

 
 
 
 

459. Which is a gametophytic tissue?

 
 
 
 

460. Gram stain is used to:

 
 
 
 

461. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

463. How is moss different from fern?

 
 
 
 

464. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

471. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

477. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

479. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. Economic importance of bacteria lies in their being:

 
 
 
 

483. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

485. Who discovered streptomycin?

 
 
 
 

486. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

488. The tree fern is:

 
 
 
 

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

 
 
 
 

490. Agar-agar is obtained from:

 
 
 
 

491. 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:

 
 
 
 

492. Bacteriophage consists of:

 
 
 
 

493. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

495. Transfusion tissue is present in the leaflet of:

 
 
 
 

496. Metulae are found in:

 
 
 
 

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

 
 
 
 

498. The largest alga is:

 
 
 
 

499. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

501. Which of the following is true for Selaginella?

 
 
 
 

502. In Cycas the fertilization is:

 
 
 
 

503. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

505. Who discovered heterothallism in fungi?

 
 
 
 

506. Pollination in Cycas takes place by :

 
 
 
 

507. NBG of Lucknow is now named as:

 
 
 
 

508. Iodine is obtained from :

 
 
 
 

509. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

515. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

517. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

519. The gametophyte of fern is as:

 
 
 
 

520. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

522. Ethylene oxide is widely used to:

 
 
 
 

523. Which group of algae have an incipient nucleus?

 
 
 
 

524. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

525. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Most primitive kind of flower is represented by:

 
 
 
 

532. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

534. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. Heterospory is the production of:

 
 
 
 

538. Ginkgo biloba is a:

 
 
 
 

539. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

541. The teeth of peristome of Funaria are :

 
 
 
 

542. Wine turns sour because of:

 
 
 
 

543. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. 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?

 
 
 
 

548. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

550. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Which have the largest antherozoid?

 
 
 
 

558. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Embryo formation is not known in :

 
 
 
 

568. Photoautotrophic bacteria have:

 
 
 
 

569. Which condition is found in Cycas?

 
 
 
 

570. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

572. Bacteriophages have been used as:

 
 
 
 

573. Fairy ring is the name given to:

 
 
 
 

574. Germination of the seed of Pinus is :

 
 
 
 

575. The sori in Dryopteris are found on:

 
 
 
 

576. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

578. Pteridophyta are also called:

 
 
 
 

579. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

581. The central part of Funaria axis is :

 
 
 
 

582. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

584. Penicillin is obtained from:

 
 
 
 

585. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

591. Special feature of pollen grains of Pinus is :

 
 
 
 

592. Heterospory and ligulate leaves are a feature of:

 
 
 
 

593. Each chloroplast in Spirogyra bears :

 
 
 
 

594. The antherozoids of Funaria are :

 
 
 
 

595. All algae have:

 
 
 
 

596. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

601. Photosynthetic bacteria have:

 
 
 
 

602. First animal pathogenic virus was discovered by:

 
 
 
 

603. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

605. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

607. Indusium in Dryopteris is:

 
 
 
 

608. Embryophyta includes :

 
 
 
 

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

 
 
 
 

610. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. Bryophyta have been placed in cryptogams because:

 
 
 
 

615. The sporangium of fern contains nearly:

 
 
 
 

616. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

618. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

620.

 

621. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

624. Coenogamete is found in:

 
 
 
 

625. Most primitive embryophytes are placed in:

 
 
 
 

626. The chief characteristic of bryophyta is that :

 
 
 
 

627. The chloroplast of Chlamydomonas are:

 
 
 
 

628. The coralloid roots are :

 
 
 
 

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

 
 
 
 

630. Yeast grows more rapidly in:

 
 
 
 

631. . Tapetum develops in:

 
 
 
 

632. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

634. Most primitive embryophytes are placed in :

 
 
 
 

635. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

637. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

639. Selaginella differs from Moss in having:

 
 
 
 

640. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. The prothallus of fern represents the plant:

 
 
 
 

644. Ulothrix produces :

 
 
 
 

645. Lichens show :

 
 
 
 

646. Acellular slime mold is/are:

 
 
 
 

647. Reproduction in Cycas takes place by :

 
 
 
 

648. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. Pythium debaryanum is the causative agent of:

 
 
 
 

652. TMV was isolated in crystalline form by:

 
 
 
 

653. Most of the algae are :

 
 
 
 

654. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

656. 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:

 
 
 
 

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

 
 
 
 

658. The zygospore in Rhizopus on germination forms:

 
 
 
 

659. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

662. 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:

 
 
 
 

663. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

665. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. Where does meiosis occur in yeast?

 
 
 
 

670. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

671. The chromosomal number in:

 
 
 
 

672. Club moss is the common name of :

 
 
 
 

673. Cyathia is characterized by:

 
 
 
 

674. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Facultative parasite is:

 
 
 
 

680. Botulinum toxin effects:

 
 
 
 

681. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

683. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

685. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

686. Infective part of virus was discovered by:

 
 
 
 

687. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. The ferns are usually found:

 
 
 
 

691. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

696. Late blight of potato is caused by:

 
 
 
 

697. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

698. Genetic material of TMV is:

 
 
 
 

699. In Cycas:

 
 
 
 

700. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. Sporophyte of Funaria is :

 
 
 
 

704. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

712. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

714. In Herpes virus DNA is:

 
 
 
 

715. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

717. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Which of the following statement is correct?

 
 
 
 

721. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

723. Disease resistant plant varieties can be produced by :

 
 
 
 

724. Cellular slime mold is:

 
 
 
 

725. LSD is:

 
 
 
 

726. The prothallus of fern is:

 
 
 
 

727. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Rhizoids of Riccia are :

 
 
 
 

731. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

733. 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?

 
 
 
 

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

 
 
 
 

735. Bacteria are placed under:

 
 
 
 

736. Cell walls of Gram-positive bacteria contain:

 
 
 
 

737. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

739. Heterosporous pteridophytes always form:

 
 
 
 

740. Lichens reproduce by :

 
 
 
 

741. Saccharomyces ludwigii ascus produces:

 
 
 
 

742. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

743. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

747. Tautonyms are illegitimate in:

 
 
 
 

748. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

750. What is a vector?

 
 
 
 

751. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

753. 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?

 
 
 
 

754. In Cycas microsporangia are borne on:

 
 
 
 

755. Which of the following lichens is harmful?

 
 
 
 

756. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

757. The sporophyte of Riccia is represented by :

 
 
 
 

758. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

764. Early blight of potato is caused by:

 
 
 
 

765. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. The leafy fern plant represents the:

 
 
 
 

769. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

770. Which among the following is a shrub?

 
 
 
 

771. The most important property of yeast is:

 
 
 
 

772. Bacteria which are spherical are called:

 
 
 
 

773. The sporophyte of Riccia is :

 
 
 
 

774. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. The first to isolate a plant virus was:

 
 
 
 

779. The nucleus of bacteria is:

 
 
 
 

780. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. True sexuality is not found in:

 
 
 
 

784. Embryophyta includes:

 
 
 
 

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

 
 
 
 

786. Most appropriate word for protozoans is:

 
 
 
 

787. The group algae possesses representatives belonging to kingdom:

 
 
 
 

788. Soil fertility is lost by the activities of:

 
 
 
 

789. What is the role of nitrifying bacteria?

 
 
 
 

790.

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

 
 
 
 

792. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

793. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Azolla growing in paddy fields helps in:

 
 
 
 

797. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

799. Pinus is:

 
 
 
 

800. Rice, pea, potato are :

 
 
 
 

801. Cycas is :

 
 
 
 

802. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. The most primitive vascular plants is:

 
 
 
 

807. Heterocysts are found in :

 
 
 
 

808. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

810. Usually, bacteria reproduce by:

 
 
 
 

811. Saccharomyces is used in:

 
 
 
 

812. Mixed cropping helps :

 
 
 
 

813. Cryptogams include :

 
 
 
 

814. Clostridium can:

 
 
 
 

815. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

819. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Bacteria are considered to be plants because they:

 
 
 
 

827. Discovery of penicillin was based on:

 
 
 
 

828. Fruits are not found in:

 
 
 
 

829. The fungi that grow on wood are called:

 
 
 
 

830. In moss, sporogenous tissue arises from:

 
 
 
 

831. Ovules are not found enclosed in ovary in :

 
 
 
 

832. Seeds are characteristically found in:

 
 
 
 

833. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

835. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. Which is a tautonym?

 
 
 
 

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

 
 
 
 

840. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

842. In Gymnocarpeae the fruiting body is :

 
 
 
 

843. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. What are plasmids?

 
 
 
 

847. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

854. Maximum diversity of life forms occurs in :

 
 
 
 

855. The orders generally have the uniform endings:

 
 
 
 

856. In binomial system most of the words are:

 
 
 
 

857. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

859. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

861. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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