Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. Which is not true for Escherichia coli?

 
 
 
 

4. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

6. Roots are absent in :

 
 
 
 

7. Lichens reproduce by :

 
 
 
 

8. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

10. An alga which is rich in proteins:

 
 
 
 

11. Which of the following is a monocot?

 
 
 
 

12. The tallest moss in the world is :

 
 
 
 

13. Which class of Protozoa includes all parasitic forms?

 
 
 
 

14. The alga, Spirogyra are found in :

 
 
 
 

15. 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:

 
 
 
 

16. Select the correct statement: (NEET 2016)

 
 
 
 

17. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Fruits are not found in :

 
 
 
 

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

 
 
 
 

23. In moss, stomata are found:

 
 
 
 

24. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. The archegonia in Selaginella develop on:

 
 
 
 

28. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Select the wrong statement:

 
 
 
 

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

 
 
 
 

33. To which class Riccia belongs :

 
 
 
 

34. Which of the following is sago palm?

 
 
 
 

35. Botulinum toxin effects:

 
 
 
 

36. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Funaria is :

 
 
 
 

40. Pneumonia is caused by:

 
 
 
 

41. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

43. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

45. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

47. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. The chief characteristic of bryophyta is that :

 
 
 
 

51. The prothallus of fern represents the plant:

 
 
 
 

52. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

56. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Which group of algae have an incipient nucleus?

 
 
 
 

62. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

63. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

65. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

67. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

68. The fungi used as food are:

 
 
 
 

69. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

71. 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:

 
 
 
 

72. Ergot is obtained from :

 
 
 
 

73. Vascular cryptogams is the term used for:

 
 
 
 

74. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

75. Zoogametes are not found in:

 
 
 
 

76. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Botulism is a:

 
 
 
 

81. Gymnosperms could also be called as:

 
 
 
 

82. Heterocysts are found in :

 
 
 
 

83. The coralloid roots are :

 
 
 
 

84. Cyanophage is a virus that attacks:

 
 
 
 

85. Which of the following statements is not correct?

 
 
 
 

86. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Vascular tissue is found in :

 
 
 
 

90. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

92. Which part of Riccia bears nurse cells?

 
 
 
 

93. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

95. Oswald Tippo’s classification was based on :

 
 
 
 

96. The source of litmus is :

 
 
 
 

97. What is a vector?

 
 
 
 

98. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

103. Pinus is:

 
 
 
 

104. In Pteris, the roots are:

 
 
 
 

105. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

108. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. The plants of Funaria grow :

 
 
 
 

112. Liverworts are included in :

 
 
 
 

113. Lichens reproduce by :

 
 
 
 

114.

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

 
 
 
 

116. The truncated cone of HIV consists of:

 
 
 
 

117. Red rot of sugarcane is caused by :

 
 
 
 

118. In a diplontic life cycle:

 
 
 
 

119. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

121. Which is a tautonym?

 
 
 
 

122. Vascular cryptogam is the term used for :

 
 
 
 

123. The largest known bacterium is:

 
 
 
 

124. Ethylene oxide is widely used to:

 
 
 
 

125. The DNA of E coli is:

 
 
 
 

126. The sporangia of Selaginella are attached:

 
 
 
 

127. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

129. All algae have:

 
 
 
 

130. Black rust of wheat is caused by:

 
 
 
 

131. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

133. Facultative saprophyte is:

 
 
 
 

134.

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

 
 
 
 

136. Embryo formation is not known in :

 
 
 
 

137. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Meristele of fern is:

 
 
 
 

141. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

143. Maximum diversity of life forms occurs in :

 
 
 
 

144. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

146. Sporophyte of Funaria is :

 
 
 
 

147. Number of capsomeres forming capsid of TMV is:

 
 
 
 

148. Mycoplasma contains:

 
 
 
 

149. The phloem of vascular system of Cycas is :

 
 
 
 

150. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

152. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. The chromosomal number in:

 
 
 
 

157. Photosynthetic bacteria have:

 
 
 
 

158. 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:

 
 
 
 

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

 
 
 
 

160. Iodine is obtained from :

 
 
 
 

161. Male gametophyte of Selaginella is found:

 
 
 
 

162. Cleavage polyembryony is found in :

 
 
 
 

163. Banana bunchy top is caused by :

 
 
 
 

164. Lichens are pioneers of vegetation in a :

 
 
 
 

165. Simple polyembryony is found in :

 
 
 
 

166. In angiosperms double fertilization represents:

 
 
 
 

167. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

169. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

171. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

173. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

175. The microsporophylls on the cone of Cycas are :

 
 
 
 

176. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

177. Most resistant spore in bacteria is:

 
 
 
 

178. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. Yeast is a source of:

 
 
 
 

186. The largest alga is:

 
 
 
 

187. Endemic plants are characterised by their:

 
 
 
 

188. Penicillin was discovered by:

 
 
 
 

189. The gametophyte of fern bears:

 
 
 
 

190. Sexual reproduction of lichen is due to :

 
 
 
 

191. Which of the following are included in Tracheophyta?

 
 
 
 

192. Which of the following shows heterotrichous habit?

 
 
 
 

193. The root nodules of leguminous plants contain:

 
 
 
 

194. The most important property of yeast is:

 
 
 
 

195. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

204. Which of the following are included in Tracheophyta?

 
 
 
 

205. The sporangium of fern contains nearly:

 
 
 
 

206. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

208. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

210. Winged seeds are found in :

 
 
 
 

211. In Cycas microsporangia are borne on:

 
 
 
 

212. Majority of lichens are :

 
 
 
 

213. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. The similarity between cyanobacteria and bacteria:

 
 
 
 

217. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

222. The antibiotic is obtained from:

 
 
 
 

223. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

228. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

233. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

235. Cocci types of bacteria are:

 
 
 
 

236. Yeast grows more rapidly in:

 
 
 
 

237. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

238. Most of the lichens are composed of :

 
 
 
 

239. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

241. Pollination drop is:

 
 
 
 

242. Some diseases caused by bacteria are:

 
 
 
 

243. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

246. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

248. Which one of the following is a monocot?

 
 
 
 

249. In Cycas:

 
 
 
 

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

 
 
 
 

251. Cycas revoluta is widely grown as :

 
 
 
 

252. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

254. Ectocarpus produces:

 
 
 
 

255. Lichens form the first community in

 
 
 
 

256. Red rot of sugarcane is caused by :

 
 
 
 

257. The ferns are usually found:

 
 
 
 

258. In Funaria :

 
 
 
 

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

 
 
 
 

260. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

262. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

267. Smallpox is caused by:

 
 
 
 

268. Disease resistant plant varieties can be produced by :

 
 
 
 

269. Aflatoxin is produced by:

 
 
 
 

270. The nucleus of bacteria is:

 
 
 
 

271. Photosynthetic protists belong to:

 
 
 
 

272. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

274. The spermatozoids of Cycas are :

 
 
 
 

275. Germination of the seed of Pinus is :

 
 
 
 

276. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

278. Most of the algae are :

 
 
 
 

279. First animal pathogenic virus was discovered by:

 
 
 
 

280. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

281. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. The sexual reproductive organs in Rhizopus are:

 
 
 
 

286. Rhizopus and yeast are usually:

 
 
 
 

287. The young leaves of Cycas have :

 
 
 
 

288. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Isomorphic type alternation of generation is found in:

 
 
 
 

292. Where does meiosis occur in yeast?

 
 
 
 

293. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. Which is an edible fungus?

 
 
 
 

298. Antibiotics cure the disease by:

 
 
 
 

299. Most primitive embryophytes are placed in:

 
 
 
 

300. All protozoans possess:

 
 
 
 

301. Reproduction in Cycas takes place by :

 
 
 
 

302. Lichens are the indicator of pollution :

 
 
 
 

303. What is mycorrhiza?

 
 
 
 

304. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

306. Which of the following statement is correct?

 
 
 
 

307. The flagella of Chlamydomonas are:

 
 
 
 

308. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. Cycas is different from mango in :

 
 
 
 

312. Standard size of a herbarium sheet is:

 
 
 
 

313. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

316. In Selaginella, the microsporangia are:

 
 
 
 

317.

 

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

 
 
 
 

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

 
 
 
 

320. The central part of Funaria axis is :

 
 
 
 

321. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

323. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

327. Saccharomyces is used in:

 
 
 
 

328. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

330. The fungi are usually:

 
 
 
 

331. Synzoospore is produced in:

 
 
 
 

332. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. The middle sterile part of capsule is called:

 
 
 
 

336. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

340. The stele of Dryopteris is a:

 
 
 
 

341. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

343. Virion refers to:

 
 
 
 

344. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. White rust of crucifers is caused by:

 
 
 
 

348. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Linnaeus is credited with introducing:

 
 
 
 

355. Among the algae kelps are :

 
 
 
 

356. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

357. Fern plants are:

 
 
 
 

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

 
 
 
 

359. What is streptomycin?

 
 
 
 

360. Mycoplasma is different from bacteria due to:

 
 
 
 

361. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

363. Cycas plant in appearance resembles :

 
 
 
 

364. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

366. Sometimes the bacterial cell is enclosed in:

 
 
 
 

367. In binomial system most of the words are:

 
 
 
 

368. Ergot of rye is caused by:

 
 
 
 

369. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. The sporophyte of Riccia is represented by :

 
 
 
 

373. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. Sleeping sickness disease in man is caused by:

 
 
 
 

377. Metulae are found in:

 
 
 
 

378. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. In moss, sporophyte is formed on:

 
 
 
 

383. In moss, peristomial teeth are:

 
 
 
 

384. Proembryo in Pinus is :

 
 
 
 

385. The first to isolate a plant virus was:

 
 
 
 

386. What is special feature of fern archegonia?

 
 
 
 

387. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. The spur of Pinus roxburghii has :

 
 
 
 

391. Lichens show :

 
 
 
 

392. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

394. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

396. Pinus microsporophyll bears:

 
 
 
 

397. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

399. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

404. Vegetative reproduction in Cycas is by means of :

 
 
 
 

405. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

410. Heterotrichous habit means :

 
 
 
 

411. Indusium in Dryopteris is:

 
 
 
 

412. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

414. Interferon is a:

 
 
 
 

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

 
 
 
 

416. . Tapetum develops in:

 
 
 
 

417. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

419. Penicillin is obtained from:

 
 
 
 

420. Heterosporous pteridophytes always form:

 
 
 
 

421. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

423. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

424. 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:

 
 
 
 

425. Cap cells are found in the filament of:

 
 
 
 

426. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

428. The fungi that grow on wood are called:

 
 
 
 

429. Generic name of mango is:

 
 
 
 

430. Which is not found in bacteria?

 
 
 
 

431. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

433. How is moss different from fern?

 
 
 
 

434. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

436. Fairy ring is the name given to:

 
 
 
 

437. The mycelium of Rhizopus is:

 
 
 
 

438. Bacteriophage consists of:

 
 
 
 

439. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

441. The lambda phase is a:

 
 
 
 

442. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

444. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

449. Selaginella differs from Moss in having:

 
 
 
 

450. Most primitive kind of flower is represented by:

 
 
 
 

451. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Black rust of wheat is caused by:

 
 
 
 

455. In moss, conducting tissue is made up of

 
 
 
 

456. Lichens are ecologically important because :

 
 
 
 

457. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

459. Plasmids are:

 
 
 
 

460. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

462. Some bacteria cannot be killed easily because of:

 
 
 
 

463. Which statement is wrong in regard to bacteria?

 
 
 
 

464. Embryophyta includes :

 
 
 
 

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

 
 
 
 

466. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

471. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

479. Protists which are diploid reproduce sexually by:

 
 
 
 

480. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Saccharomyces ludwigii ascus produces:

 
 
 
 

487. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

489. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

491. Which among the following is a shrub?

 
 
 
 

492. Reproduction in Rhizopus is:

 
 
 
 

493. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

495. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

497. Halophiles are the bacteria that require for growth:

 
 
 
 

498. Aflatoxin is produced as a product in :

 
 
 
 

499. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

501. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

503. Antibiotic has been extracted from :

 
 
 
 

504. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

506. Which organisms are the oldest life forms?

 
 
 
 

507. True sexuality is not found in:

 
 
 
 

508. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

510. Leaf spot of groundnut is caused by :

 
 
 
 

511. LSD is:

 
 
 
 

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

 
 
 
 

513. Cell walls of Gram-positive bacteria contain:

 
 
 
 

514. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

516. Heterospory is the production of:

 
 
 
 

517. Fruiting body of lichens is :

 
 
 
 

518. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

520. 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?

 
 
 
 

521. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. The sori in Dryopteris are found on:

 
 
 
 

525. Placenta in fern is:

 
 
 
 

526. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. The mode of nutrition of bacteria is usually:

 
 
 
 

532. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

534. 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:

 
 
 
 

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

 
 
 
 

536. The antherozoids of Funaria are :

 
 
 
 

537. Facultative parasite is:

 
 
 
 

538. Fruits are not found in Cycas because:

 
 
 
 

539. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

541. Leprosy is caused by:

 
 
 
 

542. Methanogens belong to:

 
 
 
 

543. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

545. The order generally ends with:

 
 
 
 

546. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

548. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

550. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

552. Pythium debaryanum is the causative agent of:

 
 
 
 

553. The megasporangium of Selaginella is:

 
 
 
 

554. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. Bacteria are considered to be plants because they:

 
 
 
 

562. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

567. The Rhizopus is:

 
 
 
 

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

 
 
 
 

569. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

571. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

577. Club moss is the common name of :

 
 
 
 

578. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

581. In moss, reduction division occurs in :

 
 
 
 

582. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

584. Late blight of potato is caused by:

 
 
 
 

585. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

587. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Infective part of virus was discovered by:

 
 
 
 

593. Viroids have:

 
 
 
 

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

 
 
 
 

595. Which is a gametophytic tissue?

 
 
 
 

596. All archaebacteria lack:

 
 
 
 

597. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. Azolla growing in paddy fields helps in:

 
 
 
 

606. 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?

 
 
 
 

607. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

614. Ulothrix produces :

 
 
 
 

615. Which of the following does not contain chlorophyll?

 
 
 
 

616. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

618. Ovules are not found enclosed in ovary in :

 
 
 
 

619. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

621. Which causes red tide?

 
 
 
 

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

 
 
 
 

623. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. In Herpes virus DNA is:

 
 
 
 

630. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

632. The fungi are mostly:

 
 
 
 

633. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

635. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

637. Cryptogams include :

 
 
 
 

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

 
 
 
 

639. Which is a fungicide?

 
 
 
 

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

 
 
 
 

641. Bacteria are found everywhere, except:

 
 
 
 

642. Cellular slime mold is:

 
 
 
 

643. Oswald Tippo’s classification is:

 
 
 
 

644. Cycas is:

 
 
 
 

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

 
 
 
 

646. Acetobacter is useful in:

 
 
 
 

647. Pasteur is famous for his:

 
 
 
 

648. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. Spermatophyta are characterized by producing:

 
 
 
 

652. Which condition is found in Cycas?

 
 
 
 

653. Who named prion?

 
 
 
 

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

 
 
 
 

655. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

657. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

659. The disease apple scab is caused by:

 
 
 
 

660. The ascus of yeast contains:

 
 
 
 

661. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

663. Ginkgo biloba is a:

 
 
 
 

664. Fertility of the soil is increased by:

 
 
 
 

665. Which have the largest antherozoid?

 
 
 
 

666. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. In a bacteriophage, DNA is present in:

 
 
 
 

671. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Photoautotrophic bacteria have:

 
 
 
 

677. Spermatophyta are characterized by producing:

 
 
 
 

678. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

680. What is absent in Deuteromycetes?

 
 
 
 

681. What are plasmids?

 
 
 
 

682. The fern plant is:

 
 
 
 

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

 
 
 
 

684. Reserve food in Euglena is:

 
 
 
 

685. Funaria is a Bryophyta because :

 
 
 
 

686. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Citrus canker is caused by:

 
 
 
 

690. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. The lichens growing on rocks are called :

 
 
 
 

699.

700. Which bacteria convert nitrate into nitrogen?

 
 
 
 

701. Psilotum is:

 
 
 
 

702. In dinoflagellates, the two flagella are:

 
 
 
 

703. Water-net is the name of:

 
 
 
 

704. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

709. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

711. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

713. Rhizophore of Selaginella is:

 
 
 
 

714. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

716. The term stele was given by:

 
 
 
 

717. Desired type of Cycas can be grown by:

 
 
 
 

718. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

720. Pollination in Pinus is :

 
 
 
 

721. Absorptive nutrition is:

 
 
 
 

722. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

725. Which of the following is true for Selaginella?

 
 
 
 

726. Protozoans are considered animals because these are:

 
 
 
 

727. Select the wrong statement:

 
 
 
 

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

 
 
 
 

729. TMV was isolated in crystalline form by:

 
 
 
 

730. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

734. The zygospore in Rhizopus on germination forms:

 
 
 
 

735. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

737. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. 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?

 
 
 
 

741. The sporangiophores in Rhizopus are:

 
 
 
 

742. Lichens are indicators of :

 
 
 
 

743. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

745. How a fern differs from a moss?

 
 
 
 

746. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

748. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

750. Green plants are classified as :

 
 
 
 

751. The genetic material of poxvirus is:

 
 
 
 

752. The orders generally have the uniform endings:

 
 
 
 

753. The gametophyte of fern is as:

 
 
 
 

754. Club moss and Peat moss belong to:

 
 
 
 

755. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

761. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

763. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Bryophyta have a special character from other plants:

 
 
 
 

769. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

771. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. 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?

 
 
 
 

775. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

776. Downy mildew disease is caused by :

 
 
 
 

777. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

779. Spirogyra differs from moss protonema in having :

 
 
 
 

780. The archegonia of Selaginella are differentiated by:

 
 
 
 

781. In Gymnosperms endosperm is a:

 
 
 
 

782. Discovery of penicillin was based on:

 
 
 
 

783. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. Why is Cycas called a living fossil?

 
 
 
 

787. The smallest unit of classification is:

 
 
 
 

788. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

800. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Early blight of potato is caused by:

 
 
 
 

808. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

810. Ovary is absent in:

 
 
 
 

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

 
 
 
 

812. Little leaf disease of Brinjal is caused by:

 
 
 
 

813. Streptomyces falls under:

 
 
 
 

814. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

819. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

821. Polystelic condition is found in:

 
 
 
 

822. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

824. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

826. In Cycas which structure is equivalent to stamen?

 
 
 
 

827. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. Choose the correct statement about Spirogyra:

 
 
 
 

832. Bacteriophages have been used as:

 
 
 
 

833. The gametophyte of moss has distinct phases :

 
 
 
 

834. Total parasites belong to:

 
 
 
 

835. Nitrifying bacteria play an important role by converting:

 
 
 
 

836. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. Chemosynthetic bacteria are:

 
 
 
 

840. Spores of which plants have chloroplast:

 
 
 
 

841. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

843. Woody climbers are known as :

 
 
 
 

844. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

846. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

848. The leaf of Cycas shows:

 
 
 
 

849. Viruses are considered to be:

 
 
 
 

850. Fruits are not found in:

 
 
 
 

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

 
 
 
 

852. The male gametes of Pinus are :

 
 
 
 

853. Cycas is :

 
 
 
 

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

 
 
 
 

855. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

857. Pollination in Cycas takes place by :

 
 
 
 

858. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

861. Green plants are classified as:

 
 
 
 

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

 
 
 
 

863. Pasteurized milk is:

 
 
 
 

864. Soil fertility is lost by the activities of: