Quiz_Random

1. Azolla and Salvinia both are:

 
 
 
 

2. Typhoid in man is caused by:

 
 
 
 

3. Choose the correct statement about Spirogyra:

 
 
 
 

4. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

5. Vascular cryptogams is the term used for:

 
 
 
 

6. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

7. Tautonyms are illegitimate in:

 
 
 
 

8. In moss, sporogenous tissue arises from:

 
 
 
 

9. The fungi used as food are:

 
 
 
 

10. Pasteurized milk is:

 
 
 
 

11. The orders generally have the uniform endings:

 
 
 
 

12. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

14. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

16. The smallest unit of classification is:

 
 
 
 

17. The middle sterile part of capsule is called:

 
 
 
 

18. Heterospory and ligulate leaves are a feature of:

 
 
 
 

19. The gametophyte of fern is as:

 
 
 
 

20. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

22. Cycas is similar to a mustard plant :

 
 
 
 

23. Which among the following is a shrub?

 
 
 
 

24. Which one of the following statement is wrong?

 
 
 
 

25. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

27. Ovules are not found enclosed in ovary in :

 
 
 
 

28. All archaebacteria lack:

 
 
 
 

29. Botulinum toxin effects:

 
 
 
 

30. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. The first to isolate a plant virus was:

 
 
 
 

37. A gill of Agaricus:

 
 
 
 

38. Cycas plant in appearance resembles :

 
 
 
 

39. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Club moss and Peat moss belong to:

 
 
 
 

43. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

44. Bacteria are found everywhere, except:

 
 
 
 

45. The seedless plants which possess vascular tissues are:

 
 
 
 

46. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

48. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

50. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

51. Cycas is:

 
 
 
 

52. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

57. Which of the following have a prokaryotic cell?

 
 
 
 

58. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Funaria are commonly found :

 
 
 
 

63. Vegetative reproduction in Cycas is by means of :

 
 
 
 

64. Vascular tissue is found in :

 
 
 
 

65. Green plants are classified as :

 
 
 
 

66. Green plants are classified as:

 
 
 
 

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

 
 
 
 

68. The teeth of peristome of Funaria are :

 
 
 
 

69. Ovary is absent in :

 
 
 
 

70. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. In Gymnocarpeae the fruiting body is :

 
 
 
 

74. The sporophyte of Riccia is represented by :

 
 
 
 

75. Most primitive embryophytes are placed in :

 
 
 
 

76. Centric discoid form of diatom is:

 
 
 
 

77. The most primitive vascular plants is:

 
 
 
 

78. Who named prion?

 
 
 
 

79. Which is the nuclear material in bacteria?

 
 
 
 

80. The sporangium of fern contains nearly:

 
 
 
 

81. All protozoans possess:

 
 
 
 

82. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

84. Lichens form the first community in

 
 
 
 

85. 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?

 
 
 
 

86. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

88. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

90. E coli is a:

 
 
 
 

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

 
 
 
 

92. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. Iodine is obtained from:

 
 
 
 

100. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

102. Mycoplasma are sensitive to:

 
 
 
 

103. The antibiotic is obtained from:

 
 
 
 

104. 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:

 
 
 
 

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

 
 
 
 

106. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

108. The source of litmus is :

 
 
 
 

109. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. The microsporophylls on the cone of Cycas are :

 
 
 
 

113. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. Which causes red tide?

 
 
 
 

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

 
 
 
 

118. Which is a redwood tree?

 
 
 
 

119. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. Triple antigen injection or vaccine are for:

 
 
 
 

126. The plants of Funaria grow :

 
 
 
 

127. The order generally ends with:

 
 
 
 

128. Cryptogams include :

 
 
 
 

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

 
 
 
 

130. Pinus is:

 
 
 
 

131. Seeds are characteristically found in:

 
 
 
 

132. Mycoplasma contains:

 
 
 
 

133. 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:

 
 
 
 

134. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

136. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. The DNA of E coli is:

 
 
 
 

140. All algae have:

 
 
 
 

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

 
 
 
 

142. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

145. Citrus canker is caused by:

 
 
 
 

146. The largest known bacterium is:

 
 
 
 

147. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Lichen show :

 
 
 
 

152. Penicillin was discovered by:

 
 
 
 

153. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

158. Liverworts are included in :

 
 
 
 

159. Which is the correct statement about Selaginella?

 
 
 
 

160. The fern plant is:

 
 
 
 

161. The lambda phase is a:

 
 
 
 

162. In moss, conducting tissue is made up of

 
 
 
 

163. Pseudomycelium is found in:

 
 
 
 

164. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

166. Ovules are not found enclosed in ovary of:

 
 
 
 

167. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

172. Black rust of wheat is caused by:

 
 
 
 

173. Pythium debaryanum is the causative agent of:

 
 
 
 

174. What is a vector?

 
 
 
 

175. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. Photosynthetic bacteria have:

 
 
 
 

179. Which fixes atmospheric nitrogen?

 
 
 
 

180. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Facultative parasite is:

 
 
 
 

184. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

190. Rhizopus belongs to:

 
 
 
 

191. In Funaria, calyptra is derived from :

 
 
 
 

192. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

194. Most primitive kind of flower is represented by:

 
 
 
 

195. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

197. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

198. The truncated cone of HIV consists of:

 
 
 
 

199. Which of the following is a heterosporous pteridophyte?

 
 
 
 

200. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

204. The mycelium of Rhizopus is:

 
 
 
 

205. Some bacteria cannot be killed easily because of:

 
 
 
 

206. One of the distinctive feature of Spirogyra is :

 
 
 
 

207. Nitrogen-fixing bacteria may be located:

 
 
 
 

208. The leaves of Funaria are :

 
 
 
 

209. Which of the following is true for viruses?

 
 
 
 

210. Desired type of Cycas can be grown by:

 
 
 
 

211. The zoospores of Ulothrix are :

 
 
 
 

212. The sporophyte of Riccia is :

 
 
 
 

213. The chloroplast in Ulothrix is :

 
 
 
 

214. In Cycas microsporangia are borne on:

 
 
 
 

215. Bacteria are placed under:

 
 
 
 

216. Which of the following have algal zone?

 
 
 
 

217. The flagella of Chlamydomonas are:

 
 
 
 

218. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. The nucleus of bacteria is:

 
 
 
 

222. Majority of lichens are :

 
 
 
 

223. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

225. The Rhizopus is:

 
 
 
 

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

 
 
 
 

227. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

232. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

234. Coenogamete is found in:

 
 
 
 

235. Acetobacter is useful in:

 
 
 
 

236. The largest alga is:

 
 
 
 

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

 
 
 
 

238. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

240. Clostridium can:

 
 
 
 

241. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

242. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

244. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

246. Banana bunchy top is caused by :

 
 
 
 

247. Red rot of sugarcane is caused by:

 
 
 
 

248. Soil fertility is lost by the activities of:

 
 
 
 

249. The smallest bacterium is:

 
 
 
 

250. Maximum diversity of life forms occurs in :

 
 
 
 

251. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

253. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Bacteria were first discovered by:

 
 
 
 

257. Reproduction in Rhizopus is:

 
 
 
 

258. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

263. Placenta in fern is:

 
 
 
 

264. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

273. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

278. In Cycas which structure is equivalent to stamen?

 
 
 
 

279. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. The central part of Funaria axis is :

 
 
 
 

284. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. The development of Selaginella embryo is:

 
 
 
 

288. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

290. Gymnosperms could also be called as:

 
 
 
 

291. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. Heterosporous pteridophytes always form:

 
 
 
 

297. Etiology includes the study of :

 
 
 
 

298. Mucilaginous canals in Cycas are found in :

 
 
 
 

299. Black rust of wheat is caused by:

 
 
 
 

300. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

307. Most resistant spore in bacteria is:

 
 
 
 

308. NBG of Lucknow is now named as:

 
 
 
 

309. Heterotrichous habit means :

 
 
 
 

310. Most common type of conjugation in Spirogyra is :

 
 
 
 

311. Spores of which plants have chloroplast:

 
 
 
 

312. Mostly type of zygospore in Ulothrix is:

 
 
 
 

313. TMV was isolated in crystalline form by:

 
 
 
 

314. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

316. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

318. In Pteris, the roots are:

 
 
 
 

319. Who among the following discovered virus?

 
 
 
 

320. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

322. In Gymnosperms endosperm is a:

 
 
 
 

323. Viruses have:

 
 
 
 

324. Facultative saprophyte is:

 
 
 
 

325. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

326. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

334. Which bacteria convert nitrate into nitrogen?

 
 
 
 

335. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Yeast grows more rapidly in:

 
 
 
 

343. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Asexual reproductive body of Volvox is called:

 
 
 
 

349. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

351.

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

 
 
 
 

353. Sporophyte of Funaria is :

 
 
 
 

354. Parmelia belongs to :

 
 
 
 

355. Most of the lichens are composed of :

 
 
 
 

356. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. What is absent in Deuteromycetes?

 
 
 
 

360. The group algae possesses representatives belonging to kingdom:

 
 
 
 

361. Funaria is :

 
 
 
 

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

 
 
 
 

363. 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:

 
 
 
 

364. The coralloid roots are :

 
 
 
 

365. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

367. Small epidermal swellings due to infection are called :

 
 
 
 

368. Winged pollen grains are found in :

 
 
 
 

369. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

374. Woody climbers are known as :

 
 
 
 

375. The archegonia in Selaginella develop on:

 
 
 
 

376. Select the wrong statement:

 
 
 
 

377. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

381. Who discovered cyanophages?

 
 
 
 

382. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

384. 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:

 
 
 
 

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

 
 
 
 

386. The term stele was given by:

 
 
 
 

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

 
 
 
 

388. The genetic material of poxvirus is:

 
 
 
 

389. Streptomyces falls under:

 
 
 
 

390. Multicellular and jacketed sex organs are found in :

 
 
 
 

391. Spirogyra represents the :

 
 
 
 

392. The gametophyte of moss has distinct phases :

 
 
 
 

393. The fungi are mostly:

 
 
 
 

394. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Protists which are diploid reproduce sexually by:

 
 
 
 

398. The chief characteristic of class Ascomycetes is:

 
 
 
 

399. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

401. Spermatophyta are characterized by producing:

 
 
 
 

402. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. 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?

 
 
 
 

406. What are plasmids?

 
 
 
 

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

 
 
 
 

408. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

410. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

412. Pythium debaryanum is the causative agent of:

 
 
 
 

413. Linnaeus is credited with introducing:

 
 
 
 

414. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

416. Discovery of penicillin was based on:

 
 
 
 

417. The root nodules of leguminous plants contain:

 
 
 
 

418. Fertility of the soil is increased by:

 
 
 
 

419. Reproduction in Cycas takes place by :

 
 
 
 

420. Oswald Tippo’s classification is:

 
 
 
 

421.

422. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Bryophyta have been placed in cryptogams because:

 
 
 
 

426. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

428. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. White rust of crucifers is caused by:

 
 
 
 

433. What is streptomycin?

 
 
 
 

434. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

439. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

440. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

442. The rhizoids of Funaria are :

 
 
 
 

443. Proembryo in Pinus is :

 
 
 
 

444. In dinoflagellates, the two flagella are:

 
 
 
 

445. The prothallus of fern is:

 
 
 
 

446. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. In Herpes virus DNA is:

 
 
 
 

453. What is special feature of fern archegonia?

 
 
 
 

454. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

455. Spermatophyta are characterized by producing:

 
 
 
 

456. Standard size of a herbarium sheet is:

 
 
 
 

457. Nannandria are:

 
 
 
 

458. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

460. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

462. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

464. Bentham and Hooker placed gymnosperms:

 
 
 
 

465. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

467. Funaria can be differentiated from Cycas :

 
 
 
 

468. Virion refers to:

 
 
 
 

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

 
 
 
 

470. 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?

 
 
 
 

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

 
 
 
 

472. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

474. 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:

 
 
 
 

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

 
 
 
 

476. Sexual reproduction in Rhizopus is by:

 
 
 
 

477. John Hutchinson divided dicots into two divisions:

 
 
 
 

478. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

481. Cyanophage is a virus that attacks:

 
 
 
 

482. Lichens reproduce by :

 
 
 
 

483. Bacteria which are spherical are called:

 
 
 
 

484. Pinus microsporophyll bears:

 
 
 
 

485. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

488. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. The mode of nutrition of bacteria is usually:

 
 
 
 

497. Which organisms are the oldest life forms?

 
 
 
 

498. Chemosynthetic bacteria are:

 
 
 
 

499.

500. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

502. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

508. Which of the following are included in Tracheophyta?

 
 
 
 

509. Saccharomyces ludwigii ascus produces:

 
 
 
 

510. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

516. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

518. Pneumonia is caused by:

 
 
 
 

519. Quarantine regulations are concerned with:

 
 
 
 

520. Protozoans are considered animals because these are:

 
 
 
 

521. Lichens are pioneers of vegetation in a :

 
 
 
 

522. The photosynthetic protists are:

 
 
 
 

523. Detailed study of bacteriophage was made by:

 
 
 
 

524. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

526. Viruses are commonly transmitted in plants through:

 
 
 
 

527. Total parasites belong to:

 
 
 
 

528. Which of the following are absent in Mycoplasma?

 
 
 
 

529. The fungi are usually:

 
 
 
 

530. The role of meiosis is for:

 
 
 
 

531. Pteridophytes are also known as :

 
 
 
 

532. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

538. To which country Antony van Leeuwenhoek belong?

 
 
 
 

539. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Who discovered heterothallism in fungi?

 
 
 
 

544. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

546. Leprosy is caused by:

 
 
 
 

547. Winged seeds are found in :

 
 
 
 

548. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

550. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

552. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

554. Bryophyta have a special character from other plants:

 
 
 
 

555. The archegonia of Selaginella are differentiated by:

 
 
 
 

556. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

558. Yeast belongs to class:

 
 
 
 

559. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

561. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

563.

 

564. Fern phloem lacks:

 
 
 
 

565. Special feature of pollen grains of Pinus is :

 
 
 
 

566. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

582. The leafy fern plant represents the:

 
 
 
 

583. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. Generic name of mango is:

 
 
 
 

587. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

589. Black rust of wheat is caused by:

 
 
 
 

590. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

592. In Funaria :

 
 
 
 

593. The gametophyte produced by apospory is :

 
 
 
 

594. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

596. Fern plants are:

 
 
 
 

597. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

599. Lichens are ecologically important because :

 
 
 
 

600. Gametophyte is the main plant body in :

 
 
 
 

601. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. The phloem of vascular system of Cycas is :

 
 
 
 

606. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

608. Kuru, a human disease is caused by:

 
 
 
 

609. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

620. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

622. Fruits are not found in:

 
 
 
 

623. Among the algae kelps are :

 
 
 
 

624. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. Cap cells are found in the filament of:

 
 
 
 

630. In moss, sporophyte is formed on:

 
 
 
 

631. First animal pathogenic virus was discovered by:

 
 
 
 

632. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. Saccharomyces is used in:

 
 
 
 

644. The ascus of yeast contains:

 
 
 
 

645. Siphonogamy is found in:

 
 
 
 

646. Which is not found in bacteria?

 
 
 
 

647. Cyathia is characterized by:

 
 
 
 

648. Oswald Tippo’s classification was based on :

 
 
 
 

649. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

651. . Tapetum develops in:

 
 
 
 

652. Vascular cryptogam is the term used for :

 
 
 
 

653. What are Cyanobacteria?

 
 
 
 

654. Roots are absent in :

 
 
 
 

655. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

659. Why is Cycas called a living fossil?

 
 
 
 

660. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

662. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. Most of the algae are :

 
 
 
 

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

 
 
 
 

667. In moss, stomata are found:

 
 
 
 

668. Circular DNA is seen in:

 
 
 
 

669. The chromosomal number in:

 
 
 
 

670. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

672. Meristele of fern is:

 
 
 
 

673. Which part of Riccia bears nurse cells?

 
 
 
 

674. Which is a fungicide?

 
 
 
 

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

 
 
 
 

676. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

678. Seeds are characteristically found in :

 
 
 
 

679. 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?

 
 
 
 

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

 
 
 
 

681. Selaginella differs from Moss in having:

 
 
 
 

682. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

685. Club moss is the common name of :

 
 
 
 

686. Longest known virus is:

 
 
 
 

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

 
 
 
 

688. Aflatoxin is produced by:

 
 
 
 

689. Viroids have:

 
 
 
 

690. Plasmids are:

 
 
 
 

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

 
 
 
 

692. Where does meiosis occur in yeast?

 
 
 
 

693. Chemosynthetic bacteria are:

 
 
 
 

694. Mycoplasma are:

 
 
 
 

695. Bacteriophages have been used as:

 
 
 
 

696. Gram stain is used to:

 
 
 
 

697. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. Yeast is a source of:

 
 
 
 

701. Ginkgo biloba is a:

 
 
 
 

702. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

704. The ferns are usually found:

 
 
 
 

705. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

710. Fairy ring is the name given to:

 
 
 
 

711. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

717. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

719. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

726. 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:

 
 
 
 

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

 
 
 
 

728. Economic importance of bacteria lies in their being:

 
 
 
 

729. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

731. An alga which is rich in proteins:

 
 
 
 

732. Mycoplasma was discovered by:

 
 
 
 

733. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

738. Bacteria growing on synthetic medium are called:

 
 
 
 

739. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. The antherozoids of Funaria are :

 
 
 
 

743. Embryophyta includes :

 
 
 
 

744. Number of capsomeres forming capsid of TMV is:

 
 
 
 

745. Spirogyra differs from moss protonema in having :

 
 
 
 

746. In tracheophyta:

 
 
 
 

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

 
 
 
 

748. Bacteria differ from viruses in being sensitive to:

 
 
 
 

749. Viruses are considered to be:

 
 
 
 

750. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

752. Some biologists have used the term Mycetozoa for:

 
 
 
 

753. The roots of Cycas are :

 
 
 
 

754. Pteridophyta are also called:

 
 
 
 

755. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

757. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

760. Fruits are not found in :

 
 
 
 

761. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

762. Common phycobiont in a lichen is :

 
 
 
 

763. Which of the following is a parasitic algae?

 
 
 
 

764. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

767. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

769. Enzymes are absent in:

 
 
 
 

770. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

772. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Each chloroplast in Spirogyra bears :

 
 
 
 

776. Lichens reproduce by :

 
 
 
 

777. Saccharomyces is well known for:

 
 
 
 

778. The Rhizopus gametes are formed in:

 
 
 
 

779. Which one of the following is a monocot?

 
 
 
 

780. Little leaf disease of Brinjal is caused by:

 
 
 
 

781. Nitrifying bacteria play an important role by converting:

 
 
 
 

782. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

784. Climbers are found in genus:

 
 
 
 

785. Milk is converted to curd by:

 
 
 
 

786. Usually, bacteria reproduce by:

 
 
 
 

787. Diphtheria is caused by:

 
 
 
 

788. Water-borne bacterial diseases are:

 
 
 
 

789. Water bloom is generally caused by :

 
 
 
 

790. Mixed cropping helps :

 
 
 
 

791. The tallest moss in the world is :

 
 
 
 

792. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

794. Sometimes the bacterial cell is enclosed in:

 
 
 
 

795. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. Heterocysts are found in :

 
 
 
 

799. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

801. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. Germination of the seed of Pinus is :

 
 
 
 

806. In Cycas:

 
 
 
 

807. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. In moss, peristomial teeth are:

 
 
 
 

811. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

814. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

816. Aflatoxin is produced as a product in :

 
 
 
 

817. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. To which class Riccia belongs :

 
 
 
 

821. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

834. Methanogens belong to:

 
 
 
 

835. Select the correct statement: (NEET 2016)

 
 
 
 

836. Which is a gametophytic tissue?

 
 
 
 

837. Fruiting body of lichens is :

 
 
 
 

838. Ulothrix produces :

 
 
 
 

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

 
 
 
 

840. Pasteurization of milk involves heating for:

 
 
 
 

841. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

844. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. The leaf of Cycas shows:

 
 
 
 

849. Pinus gerardiana is :

 
 
 
 

850. Metulae are found in:

 
 
 
 

851. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

856. Interferon is a:

 
 
 
 

857. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

859. Reserve food in Euglena is:

 
 
 
 

860. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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