Quiz_Random

1. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

9. The tallest moss in the world is :

 
 
 
 

10. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Soil fertility is lost by the activities of:

 
 
 
 

14. The order generally ends with:

 
 
 
 

15. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

20. Early blight of potato is caused by:

 
 
 
 

21. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

23. Aflatoxin is produced by:

 
 
 
 

24. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

26. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Sporophyte of fern is:

 
 
 
 

30. Citrus canker is caused by :

 
 
 
 

31. Viruses are considered to be:

 
 
 
 

32.

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

 
 
 
 

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

 
 
 
 

35. The zygospore in Rhizopus on germination forms:

 
 
 
 

36. Disease resistant plant varieties can be produced by :

 
 
 
 

37. The chief characteristic of bryophyta is that :

 
 
 
 

38. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

43. The role of meiosis is for:

 
 
 
 

44. Bacteria growing on synthetic medium are called:

 
 
 
 

45. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

47. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

49. Germ theory of disease was proposed by:

 
 
 
 

50. The root nodules of leguminous plants contain:

 
 
 
 

51. Cellular slime mold is:

 
 
 
 

52. Ulothrix produces :

 
 
 
 

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

 
 
 
 

54. Longest known virus is:

 
 
 
 

55. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

57. Cycas is:

 
 
 
 

58. In angiosperms double fertilization represents:

 
 
 
 

59. An Hfr bacterium is one that contains:

 
 
 
 

60. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. First animal pathogenic virus was discovered by:

 
 
 
 

64. Ovary is absent in :

 
 
 
 

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

 
 
 
 

66. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Standard size of a herbarium sheet is:

 
 
 
 

73. The chromosomal number in:

 
 
 
 

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

 
 
 
 

75. Zoogametes are not found in:

 
 
 
 

76. Bacteria were first discovered by:

 
 
 
 

77. Which is the nuclear material in bacteria?

 
 
 
 

78. The Rhizopus is:

 
 
 
 

79. Total parasites belong to:

 
 
 
 

80. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. The truncated cone of HIV consists of:

 
 
 
 

87. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

89. Most appropriate word for protozoans is:

 
 
 
 

90. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

92. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Photoautotrophic bacteria have:

 
 
 
 

99. The prothallus of fern represents the plant:

 
 
 
 

100. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

102. In Selaginella, the microsporangia are:

 
 
 
 

103. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. The gametophyte of fern bears:

 
 
 
 

113. The Rhizopus gametes are formed in:

 
 
 
 

114. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

115. The leaves of Funaria are :

 
 
 
 

116. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

118. What is absent in Deuteromycetes?

 
 
 
 

119. The development of Selaginella embryo is:

 
 
 
 

120. The largest known bacterium is:

 
 
 
 

121. The middle sterile part of capsule is called:

 
 
 
 

122. Pollination in Cycas takes place by :

 
 
 
 

123. One of the distinctive feature of Spirogyra is :

 
 
 
 

124. Usually, bacteria reproduce by:

 
 
 
 

125. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

127. Lichen show :

 
 
 
 

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

 
 
 
 

129. Lichens are the indicator of pollution :

 
 
 
 

130. Penicillin is obtained from:

 
 
 
 

131. In binomial system most of the words are:

 
 
 
 

132. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

134. Which one of the following is a monocot?

 
 
 
 

135. Liverworts are included in :

 
 
 
 

136. In moss, sporogenous tissue arises from:

 
 
 
 

137. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

139. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

141. Leaf spot of groundnut is caused by :

 
 
 
 

142. Ovules are not found enclosed in ovary of:

 
 
 
 

143. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

145. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

147. Penicillin was discovered by:

 
 
 
 

148. Cycas is :

 
 
 
 

149. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

151. Parmelia belongs to :

 
 
 
 

152. Which part of Riccia bears nurse cells?

 
 
 
 

153. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

155. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

156. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. LSD is:

 
 
 
 

161. Cyanophage is a virus that attacks:

 
 
 
 

162. The lambda phase is a:

 
 
 
 

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

 
 
 
 

164. Cycas plant in appearance resembles :

 
 
 
 

165. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

167. Plasmids are:

 
 
 
 

168. Pinus microsporophyll bears:

 
 
 
 

169. Clostridium can:

 
 
 
 

170. Ovules are not found enclosed in ovary in :

 
 
 
 

171. Sometimes the bacterial cell is enclosed in:

 
 
 
 

172. Fruiting body of lichens is :

 
 
 
 

173. Number of capsomeres forming capsid of TMV is:

 
 
 
 

174. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. 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?

 
 
 
 

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

 
 
 
 

179. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

181. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

184. The prothallus of fern is:

 
 
 
 

185. In dinoflagellates, the two flagella are:

 
 
 
 

186. Climbers are found in genus:

 
 
 
 

187. Nannandria are:

 
 
 
 

188. The fungi are mostly:

 
 
 
 

189. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Synzoospore is produced in:

 
 
 
 

194. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

202. Most of the algae are :

 
 
 
 

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

 
 
 
 

204. Late blight of potato is caused by :

 
 
 
 

205. Reproduction in Cycas takes place by :

 
 
 
 

206. Which of the following statements is not correct?

 
 
 
 

207. Ergot is obtained from :

 
 
 
 

208. Generic name of mango is:

 
 
 
 

209. Gram stain is used to:

 
 
 
 

210. The lichens growing on rocks are called :

 
 
 
 

211. Which is a gametophytic tissue?

 
 
 
 

212. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

214. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

216. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. Agar-agar is obtained from:

 
 
 
 

220. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

221. Bryophyta have been placed in cryptogams because:

 
 
 
 

222. The megaspore of Selaginella on germination produces:

 
 
 
 

223. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

229. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Which among the following is a shrub?

 
 
 
 

233. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

235. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Embryophyta includes:

 
 
 
 

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

 
 
 
 

241. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

250. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

252. Which causes red tide?

 
 
 
 

253. Heterospory and ligulate leaves are a feature of:

 
 
 
 

254. The DNA of E coli is:

 
 
 
 

255. In tracheophyta:

 
 
 
 

256. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

261. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

263. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

269. Sporophyte of Funaria is :

 
 
 
 

270. Bacteria which are spherical are called:

 
 
 
 

271. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

273. The fern plant is:

 
 
 
 

274. Oswald Tippo’s classification was based on :

 
 
 
 

275. The sporophyte of Riccia is :

 
 
 
 

276. Amoeba is a member of the phylum:

 
 
 
 

277. Which condition is found in Cycas?

 
 
 
 

278. The coralloid roots are :

 
 
 
 

279. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

281. Vascular cryptogam is the term used for :

 
 
 
 

282. Black rust of wheat is caused by:

 
 
 
 

283. What is mycorrhiza?

 
 
 
 

284. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. Viruses are commonly transmitted in plants through:

 
 
 
 

288. Protozoans are considered animals because these are:

 
 
 
 

289. Lichens are indicators of :

 
 
 
 

290. Acetobacter is useful in:

 
 
 
 

291. Multicellular and jacketed sex organs are found in :

 
 
 
 

292. The roots of Cycas are :

 
 
 
 

293. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

295. Some bacteria cannot be killed easily because of:

 
 
 
 

296. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

297. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304. In Funaria, calyptra is derived from :

 
 
 
 

305. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Bacteria are found everywhere, except:

 
 
 
 

309. Which of the following is sago palm?

 
 
 
 

310. What are plasmids?

 
 
 
 

311. Which class of Protozoa includes all parasitic forms?

 
 
 
 

312. Protists which are diploid reproduce sexually by:

 
 
 
 

313. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

316. The most important property of yeast is:

 
 
 
 

317. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Botulism is a:

 
 
 
 

322. Water bloom is generally caused by :

 
 
 
 

323. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

325. Facultative saprophyte is:

 
 
 
 

326. Lichens reproduce by :

 
 
 
 

327. Water-net is the name of:

 
 
 
 

328. Virus and bacteriophage are made-up of:

 
 
 
 

329. Red rot of sugarcane is caused by :

 
 
 
 

330. Nitrogen-fixing bacteria may be located:

 
 
 
 

331. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

333. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

335. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

337. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

339. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

340. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

342. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. Gymnosperms could also be called as:

 
 
 
 

350. The ascus of yeast contains:

 
 
 
 

351. The mycelium of Rhizopus is:

 
 
 
 

352. In a bacteriophage, DNA is present in:

 
 
 
 

353. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

355. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

357. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

359. All protozoans possess:

 
 
 
 

360. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Which group of algae have an incipient nucleus?

 
 
 
 

371. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

377. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

379. The archegonia in Selaginella develop on:

 
 
 
 

380. Diphtheria is caused by:

 
 
 
 

381. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

389. Ectocarpus produces:

 
 
 
 

390. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

392. NBG of Lucknow is now named as:

 
 
 
 

393. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

395. Mycoplasma is different from bacteria due to:

 
 
 
 

396. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. Genetic material of TMV is:

 
 
 
 

400. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

403. Pasteurized milk is:

 
 
 
 

404. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

407. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

410. Anoxygenic photosynthesis occurs in:

 
 
 
 

411.

 

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

 
 
 
 

413. The development of sporangium in Selaginella is:

 
 
 
 

414. Photosynthetic bacteria have:

 
 
 
 

415. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

417. Most common type of conjugation in Spirogyra is :

 
 
 
 

418. Psilotum is:

 
 
 
 

419. Lichens are pioneers of vegetation in a :

 
 
 
 

420. Ovules are not found enclosed in ovary in :

 
 
 
 

421. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

423. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

425. What is a vector?

 
 
 
 

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

 
 
 
 

427. Winged pollen grains are found in :

 
 
 
 

428. Triple antigen injection or vaccine are for:

 
 
 
 

429. Special feature of pollen grains of Pinus is :

 
 
 
 

430. Little leaf disease of Brinjal is caused by:

 
 
 
 

431. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

433. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

435. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

437. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

442. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Maximum diversity of life forms occurs in :

 
 
 
 

447. Late blight of potato is caused by:

 
 
 
 

448. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

450. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

452. Enzymes are absent in:

 
 
 
 

453. 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:

 
 
 
 

454. Diploxylic vascular bundles are found in:

 
 
 
 

455. Ergot of rye is caused by:

 
 
 
 

456. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

458. All algae have:

 
 
 
 

459. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. Mycoplasmas are not viruses in nature because:

 
 
 
 

464. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

466. Most resistant spore in bacteria is:

 
 
 
 

467. The antibiotic is obtained from:

 
 
 
 

468. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

476. The source of litmus is :

 
 
 
 

477. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

479. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Fruits are not found in:

 
 
 
 

485. Saccharomyces is well known for:

 
 
 
 

486. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

488. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

490. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

492. Mycoplasma are sensitive to:

 
 
 
 

493. Pneumonia is caused by:

 
 
 
 

494. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

496. Spirogyra differs from moss protonema in having :

 
 
 
 

497. Citrus canker is caused by:

 
 
 
 

498. In Cycas:

 
 
 
 

499. In moss, conducting tissue is made up of

 
 
 
 

500. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. Funaria is :

 
 
 
 

505. Which have the largest antherozoid?

 
 
 
 

506. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. The sporangiophores in Rhizopus are:

 
 
 
 

510. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

512. Antibiotic has been extracted from :

 
 
 
 

513. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. All archaebacteria lack:

 
 
 
 

517. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

519. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

521. Woody climbers are known as :

 
 
 
 

522. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

525. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

527. Tautonyms are illegitimate in:

 
 
 
 

528. The first to isolate a plant virus was:

 
 
 
 

529. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. Green plants are classified as:

 
 
 
 

533. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

535. Mixed cropping helps :

 
 
 
 

536. The stele of Dryopteris is a:

 
 
 
 

537. Who among the following discovered virus?

 
 
 
 

538. 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:

 
 
 
 

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

 
 
 
 

540. Acellular slime mold is/are:

 
 
 
 

541. Most primitive kind of flower is represented by:

 
 
 
 

542. Who discovered heterothallism in fungi?

 
 
 
 

543. Cycas is similar to a mustard plant :

 
 
 
 

544. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

545. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

549. The fungi are usually:

 
 
 
 

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

 
 
 
 

551. The spur of Pinus roxburghii has :

 
 
 
 

552. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

554. Nitrifying bacteria play an important role by converting:

 
 
 
 

555. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

557. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. To which country Antony van Leeuwenhoek belong?

 
 
 
 

561. Ovary is absent in:

 
 
 
 

562. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Which of the following is a parasitic algae?

 
 
 
 

566. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

568. Which lichen is called Reindeer moss?

 
 
 
 

569. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

571. White rust of crucifers is caused by:

 
 
 
 

572. Small epidermal swellings due to infection are called :

 
 
 
 

573. Viroids have:

 
 
 
 

574. Heterospory is the production of:

 
 
 
 

575. Siphonogamy is found in:

 
 
 
 

576. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

578. The tree fern is:

 
 
 
 

579. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. The sporangia of Selaginella are attached:

 
 
 
 

583. Which of the following have a prokaryotic cell?

 
 
 
 

584. In Cycas microsporangia are borne on:

 
 
 
 

585. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

590. Streptomyces falls under:

 
 
 
 

591. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

593. Transfusion tissue is present in the leaflet of:

 
 
 
 

594. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

604. 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:

 
 
 
 

605. An alga which is rich in proteins:

 
 
 
 

606. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

608. The chloroplast in Ulothrix is :

 
 
 
 

609. The most primitive vascular plants is:

 
 
 
 

610. In moss, peristomial teeth are:

 
 
 
 

611. Proembryo in Pinus is :

 
 
 
 

612. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

614. Mucilaginous canals in Cycas are found in :

 
 
 
 

615. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

617. The phloem of vascular system of Cycas is :

 
 
 
 

618. The photosynthetic protists are:

 
 
 
 

619. Bacteria are placed under:

 
 
 
 

620. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

623. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

624. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

631. Which is not true for Escherichia coli?

 
 
 
 

632. Interferon is a:

 
 
 
 

633. 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:

 
 
 
 

634. The archegonia of Selaginella are differentiated by:

 
 
 
 

635. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

639. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

642. Heterocysts are found in :

 
 
 
 

643. Viruses have:

 
 
 
 

644. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

649. Fairy ring is the name given to:

 
 
 
 

650. The gametophyte of moss has distinct phases :

 
 
 
 

651. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

653. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

655. Some diseases caused by bacteria are:

 
 
 
 

656. Which is a fungicide?

 
 
 
 

657. Most primitive group of vascular plants are:

 
 
 
 

658. Pythium debaryanum is the causative agent of:

 
 
 
 

659. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

660. Quarantine regulations are concerned with:

 
 
 
 

661. Discovery of penicillin was based on:

 
 
 
 

662. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

664. In Gymnosperms endosperm is a:

 
 
 
 

665. In moss, stomata are found:

 
 
 
 

666. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

668. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

669. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. In Cycas which structure is equivalent to stamen?

 
 
 
 

675. Vegetative reproduction in Cycas is by means of :

 
 
 
 

676. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

680. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

682. Fertility of the soil is increased by:

 
 
 
 

683. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

685. Pollination drop is:

 
 
 
 

686. Cell walls of Gram-positive bacteria contain:

 
 
 
 

687. Mycoplasma was discovered by:

 
 
 
 

688. Yeast belongs to class:

 
 
 
 

689. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

691. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

693. 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:

 
 
 
 

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

 
 
 
 

695. Which of the following is a heterosporous pteridophyte?

 
 
 
 

696. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

698. Sexual reproduction of lichen is due to :

 
 
 
 

699.

700. Which of the following statement is correct?

 
 
 
 

701. Cycas revoluta is widely grown as :

 
 
 
 

702. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

704. Which is absent from the xylem of Cycas?

 
 
 
 

705. Which is a tautonym?

 
 
 
 

706. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. 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:

 
 
 
 

712. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Fern prothallus is:

 
 
 
 

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

 
 
 
 

717. E coli is a:

 
 
 
 

718. The plants of Funaria grow :

 
 
 
 

719. Selaginella differs from Moss in having:

 
 
 
 

720. The two conjugating gametangia of Rhizopus are:

 
 
 
 

721. Select the wrong statement:

 
 
 
 

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

 
 
 
 

723. The spermatozoids of Cycas are :

 
 
 
 

724. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. The microsporophylls on the cone of Cycas are :

 
 
 
 

729. In Cycas the fertilization is:

 
 
 
 

730. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

734. Spermatophyta are characterized by producing:

 
 
 
 

735. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. The similarity between cyanobacteria and bacteria:

 
 
 
 

743. Cryptogams include :

 
 
 
 

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

 
 
 
 

745. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

747. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

749. Facultative parasite is:

 
 
 
 

750. The gametophyte produced by apospory is :

 
 
 
 

751. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

753. The chief characteristic of class Ascomycetes is:

 
 
 
 

754. Cocci types of bacteria are:

 
 
 
 

755. The leafy fern plant represents the:

 
 
 
 

756. Which of the following shows heterotrichous habit?

 
 
 
 

757. Azolla growing in paddy fields helps in:

 
 
 
 

758. Metulae are found in:

 
 
 
 

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

 
 
 
 

760.

761. Which is a redwood tree?

 
 
 
 

762. 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?

 
 
 
 

763. Which is not found in bacteria?

 
 
 
 

764. Club moss is the common name of :

 
 
 
 

765. The orders generally have the uniform endings:

 
 
 
 

766. In Herpes virus DNA is:

 
 
 
 

767. The largest alga is:

 
 
 
 

768. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

770. Oswald Tippo’s classification is:

 
 
 
 

771. The term stele was given by:

 
 
 
 

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

 
 
 
 

773. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

775. Mycoplasma are:

 
 
 
 

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

 
 
 
 

777. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

779. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. Embryophyta includes :

 
 
 
 

784. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

785. Which of the following are included in Tracheophyta?

 
 
 
 

786. Linnaeus is credited with introducing:

 
 
 
 

787. Ginkgo biloba is a:

 
 
 
 

788. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

792. Cyathia is characterized by:

 
 
 
 

793. Who discovered cyanophages?

 
 
 
 

794. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

796. Indusium in Dryopteris is:

 
 
 
 

797. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

799. How is moss different from fern?

 
 
 
 

800. Lichens form the first community in

 
 
 
 

801. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Fern plants are:

 
 
 
 

805. Seeds are characteristically found in :

 
 
 
 

806. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

808. To which class Riccia belongs :

 
 
 
 

809. Asexual reproductive body of Volvox is called:

 
 
 
 

810. Each chloroplast in Spirogyra bears :

 
 
 
 

811. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

814. Virion refers to:

 
 
 
 

815. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

818. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

820. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

821. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

823. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

825. How a fern differs from a moss?

 
 
 
 

826. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. The sporophyte of Riccia is represented by :

 
 
 
 

831. A gill of Agaricus:

 
 
 
 

832. Which is the correct statement about Selaginella?

 
 
 
 

833. The chloroplast of Chlamydomonas are:

 
 
 
 

834. . Tapetum develops in:

 
 
 
 

835. Spirogyra represents the :

 
 
 
 

836. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. Smallpox is caused by:

 
 
 
 

840. Bacteria differ from viruses in being sensitive to:

 
 
 
 

841. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

843. Heterosporous pteridophytes always form:

 
 
 
 

844. The male gametes of Pinus are :

 
 
 
 

845. Select the wrong statement:

 
 
 
 

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

 
 
 
 

847. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

849. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. Rice, pea, potato are :

 
 
 
 

853. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

855. Mostly type of zygospore in Ulothrix is:

 
 
 
 

856. Lichens are ecologically important because :

 
 
 
 

857. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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