Quiz_Random

1. Reserve food in Euglena is:

 
 
 
 

2. Who discovered heterothallism in fungi?

 
 
 
 

3. Small epidermal swellings due to infection are called :

 
 
 
 

4. Fruiting body of lichens is :

 
 
 
 

5. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

7. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. In moss, calyptra is formed from:

 
 
 
 

11. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14.

15. The archegonia in Selaginella develop on:

 
 
 
 

16. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

18. The leaves of Funaria are :

 
 
 
 

19. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

21. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

23. Desired type of Cycas can be grown by:

 
 
 
 

24. Spores of which plants have chloroplast:

 
 
 
 

25. Anoxygenic photosynthesis occurs in:

 
 
 
 

26. Bacteria which are spherical are called:

 
 
 
 

27. Infective part of virus was discovered by:

 
 
 
 

28. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

30. Most primitive group of vascular plants are:

 
 
 
 

31. Gymnosperms could also be called as:

 
 
 
 

32. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

34. Aflatoxin is produced as a product in :

 
 
 
 

35. Acellular slime mold is/are:

 
 
 
 

36. The most primitive vascular plants is:

 
 
 
 

37. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

39. Vascular cryptogams is the term used for:

 
 
 
 

40. Multicellular and jacketed sex organs are found in :

 
 
 
 

41. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. The archegonia of Selaginella are differentiated by:

 
 
 
 

45. Protists which are diploid reproduce sexually by:

 
 
 
 

46. The rhizoids of Funaria are :

 
 
 
 

47. 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:

 
 
 
 

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

 
 
 
 

49. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

50. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

52. Protistan algae obtain their food as:

 
 
 
 

53. Clostridium can:

 
 
 
 

54. Pollination in Cycas takes place by :

 
 
 
 

55. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

57. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

59. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

61. Pollination drop is:

 
 
 
 

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

 
 
 
 

63. Linnaeus is credited with introducing:

 
 
 
 

64. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Which of the following applies to Selaginella?

 
 
 
 

68. Funaria is :

 
 
 
 

69. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

74. Etiology includes the study of :

 
 
 
 

75. Yeast belongs to class:

 
 
 
 

76. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

78. The gametophyte of fern is as:

 
 
 
 

79. Early blight of potato is caused by:

 
 
 
 

80. The coralloid roots are :

 
 
 
 

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

 
 
 
 

82. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

84. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

86. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. The chloroplast in Ulothrix is :

 
 
 
 

90. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

92. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Which is a fungicide?

 
 
 
 

96. 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:

 
 
 
 

97. Soil fertility is lost by the activities of:

 
 
 
 

98. Pteridophyta are also called:

 
 
 
 

99. Fruits are not found in Cycas because:

 
 
 
 

100. Which group of algae have an incipient nucleus?

 
 
 
 

101. Bacteria are considered to be plants because they:

 
 
 
 

102. Which is a redwood tree?

 
 
 
 

103. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

113. Pneumonia is caused by:

 
 
 
 

114. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

116. Leprosy is caused by:

 
 
 
 

117. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

119. The teeth of peristome of Funaria are :

 
 
 
 

120. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

122. In moss, peristomial teeth are:

 
 
 
 

123. Lichens show :

 
 
 
 

124. Which of the following is true for viruses?

 
 
 
 

125. All algae have:

 
 
 
 

126. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. Which of the following does not contain chlorophyll?

 
 
 
 

130. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

132. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

134. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

140. 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?

 
 
 
 

141. Reproduction in Rhizopus is:

 
 
 
 

142. Photosynthetic bacteria have:

 
 
 
 

143. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. The term stele was given by:

 
 
 
 

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

 
 
 
 

148. The orders generally have the uniform endings:

 
 
 
 

149. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. The most important property of yeast is:

 
 
 
 

155. Which is the correct statement about Selaginella?

 
 
 
 

156. Funaria is :

 
 
 
 

157. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

159. Viruses are considered to be:

 
 
 
 

160. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Vegetative reproduction in Cycas is by means of :

 
 
 
 

165. Chemosynthetic bacteria are:

 
 
 
 

166. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

167. The nucleus of bacteria is:

 
 
 
 

168. Halophiles are the bacteria that require for growth:

 
 
 
 

169. Psilotum is:

 
 
 
 

170. Heterotrichous habit means :

 
 
 
 

171. Cycas is:

 
 
 
 

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

 
 
 
 

173. The young leaves of Cycas have :

 
 
 
 

174. Which of the following statements is not correct?

 
 
 
 

175. Majority of lichens are :

 
 
 
 

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

 
 
 
 

177. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. The antibiotic is obtained from:

 
 
 
 

181. Red rot of sugarcane is caused by:

 
 
 
 

182. Pinus microsporophyll bears:

 
 
 
 

183. Liverworts are included in :

 
 
 
 

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

 
 
 
 

185. NBG of Lucknow is now named as:

 
 
 
 

186. Lichens are pioneers of vegetation in a :

 
 
 
 

187. Metulae are found in:

 
 
 
 

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

 
 
 
 

189. The prothallus of fern is:

 
 
 
 

190. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

192. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

194. The sporangia of Selaginella are attached:

 
 
 
 

195. The lichens growing on rocks are called :

 
 
 
 

196. The fungi used as food are:

 
 
 
 

197. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

199. In tracheophyta:

 
 
 
 

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

 
 
 
 

201. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

203. Selaginella differs from Moss in having:

 
 
 
 

204. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

208. Heterosporous pteridophytes always form:

 
 
 
 

209. Meristele of fern is:

 
 
 
 

210. Why is Cycas called a living fossil?

 
 
 
 

211. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

216. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

224. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

228. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Asexual reproductive body of Volvox is called:

 
 
 
 

233. Mycoplasma are:

 
 
 
 

234. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

236. Spirogyra differs from moss protonema in having :

 
 
 
 

237. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

239. Centric discoid form of diatom is:

 
 
 
 

240. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

242. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

246. What are plasmids?

 
 
 
 

247. Black rust of wheat is caused by:

 
 
 
 

248. Viruses have:

 
 
 
 

249. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

251. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Siphonogamy is found in:

 
 
 
 

258. Fern prothallus is:

 
 
 
 

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

 
 
 
 

260. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

262. Standard size of a herbarium sheet is:

 
 
 
 

263. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

265. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

266. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

268. Most of the lichens are composed of :

 
 
 
 

269. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

271. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

273. 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:

 
 
 
 

274. Bacteria growing on synthetic medium are called:

 
 
 
 

275. The central part of Funaria axis is :

 
 
 
 

276. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

278. Which is absent from the xylem of Cycas?

 
 
 
 

279. Winged seeds are found in :

 
 
 
 

280. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

282. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

287. Saccharomyces ludwigii ascus produces:

 
 
 
 

288. Iodine is obtained from :

 
 
 
 

289. John Hutchinson divided dicots into two divisions:

 
 
 
 

290. What is special feature of fern archegonia?

 
 
 
 

291. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Cap cells are found in the filament of:

 
 
 
 

295. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

297. Bentham and Hooker placed gymnosperms:

 
 
 
 

298. Cyanophage is a virus that attacks:

 
 
 
 

299. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

303. Sporophyte of fern is:

 
 
 
 

304. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Circular DNA is seen in:

 
 
 
 

309. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

311. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

314. The ferns are usually found:

 
 
 
 

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

 
 
 
 

316. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

317. Disease resistant plant varieties can be produced by :

 
 
 
 

318. Who discovered streptomycin?

 
 
 
 

319. Black rust of wheat is caused by:

 
 
 
 

320. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Mucilaginous canals in Cycas are found in :

 
 
 
 

326. Some biologists have used the term Mycetozoa for:

 
 
 
 

327. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

329. Bacteriophages have been used as:

 
 
 
 

330. Fern plants are:

 
 
 
 

331. Botulinum toxin effects:

 
 
 
 

332. Longest known virus is:

 
 
 
 

333. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

335. Which part of Riccia bears nurse cells?

 
 
 
 

336. Broad spectrum antibiotic is, which:

 
 
 
 

337. The fungi are usually:

 
 
 
 

338. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

340. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344.

 

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

 
 
 
 

346. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

348. Enzymes are absent in:

 
 
 
 

349. Mycoplasmas are not viruses in nature because:

 
 
 
 

350. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

352. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. Mycoplasma are sensitive to:

 
 
 
 

356. Who discovered cyanophages?

 
 
 
 

357. Most appropriate word for protozoans is:

 
 
 
 

358. The truncated cone of HIV consists of:

 
 
 
 

359. Transfusion tissue is present in the leaflet of:

 
 
 
 

360. The sexual reproductive organs in Rhizopus are:

 
 
 
 

361. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

363. Mostly type of zygospore in Ulothrix is:

 
 
 
 

364. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

366. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

368. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. An alga which is rich in proteins:

 
 
 
 

375. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

376. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. Fruits are not found in:

 
 
 
 

381. Winged pollen grains are found in :

 
 
 
 

382. Citrus canker is caused by :

 
 
 
 

383. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

385. Which of the following is sago palm?

 
 
 
 

386. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

391. Citrus canker is caused by:

 
 
 
 

392. Green plants are classified as:

 
 
 
 

393. The photosynthetic protists are:

 
 
 
 

394. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

396. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

400. 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?

 
 
 
 

401. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

403. Select the correct statement: (NEET 2016)

 
 
 
 

404. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

406. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Pythium debaryanum is the causative agent of:

 
 
 
 

410. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

412. Isomorphic type alternation of generation is found in:

 
 
 
 

413. In Funaria :

 
 
 
 

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

 
 
 
 

415. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. The chloroplast of Chlamydomonas are:

 
 
 
 

419.

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

 
 
 
 

421. Banana bunchy top is caused by :

 
 
 
 

422. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. Most of the algae are :

 
 
 
 

431. The largest alga is:

 
 
 
 

432. Bivalved siliceous shell or frustule occur in:

 
 
 
 

433. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

435. In Pteris, the roots are:

 
 
 
 

436. In Selaginella, the microsporangia are:

 
 
 
 

437. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. The gametophyte of moss has distinct phases :

 
 
 
 

441. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

443. In Pteris, the archegonia are present:

 
 
 
 

444. Pinus is:

 
 
 
 

445. Bacteriophage consists of:

 
 
 
 

446. Antibiotic has been extracted from :

 
 
 
 

447. Tautonyms are illegitimate in:

 
 
 
 

448. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

450. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

452. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

454. The sporangiophores in Rhizopus are:

 
 
 
 

455. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

456. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Penicillin is obtained from:

 
 
 
 

463. Which is a tautonym?

 
 
 
 

464. Pinus gerardiana is :

 
 
 
 

465. 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:

 
 
 
 

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

 
 
 
 

467. Quarantine regulations are concerned with:

 
 
 
 

468. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

470. Which of the following lichens is harmful?

 
 
 
 

471. Genetic material of TMV is:

 
 
 
 

472. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. 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?

 
 
 
 

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

 
 
 
 

477. The chromosomal number in:

 
 
 
 

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

 
 
 
 

479. In Cycas which structure is equivalent to stamen?

 
 
 
 

480. All archaebacteria lack:

 
 
 
 

481. Ethylene oxide is widely used to:

 
 
 
 

482. Gram stain is used to:

 
 
 
 

483. The order generally ends with:

 
 
 
 

484. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

487. Cleavage polyembryony is found in :

 
 
 
 

488. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. Facultative parasite is:

 
 
 
 

492. Lichens form the first community in

 
 
 
 

493. Lichens are the indicator of pollution :

 
 
 
 

494. Nannandria are:

 
 
 
 

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

 
 
 
 

496. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

497. Pteridophytes are also known as :

 
 
 
 

498. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. Sometimes the bacterial cell is enclosed in:

 
 
 
 

506. Cocci types of bacteria are:

 
 
 
 

507. Redness of red sea is due to :

 
 
 
 

508. Pasteurization of milk involves heating for:

 
 
 
 

509. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

511. Choose the correct statement about Spirogyra:

 
 
 
 

512. Iodine is obtained from:

 
 
 
 

513. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

515. Saccharomyces is used in:

 
 
 
 

516. How is moss different from fern?

 
 
 
 

517. Which bacteria convert nitrate into nitrogen?

 
 
 
 

518. Funaria is a Bryophyta because :

 
 
 
 

519. Spermatophyta are characterized by producing:

 
 
 
 

520. Kuru, a human disease is caused by:

 
 
 
 

521. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

523. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

525. Triple antigen injection or vaccine are for:

 
 
 
 

526. Enteric bacteria are those bacteria that live:

 
 
 
 

527. Yeast is a source of:

 
 
 
 

528. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Germ theory of disease was proposed by:

 
 
 
 

532. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. Who among the following discovered virus?

 
 
 
 

536. How a fern differs from a moss?

 
 
 
 

537. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Where does meiosis occur in yeast?

 
 
 
 

544. The ascus of yeast contains:

 
 
 
 

545. Ergot is obtained from :

 
 
 
 

546. LSD is:

 
 
 
 

547. Cycas revoluta is widely grown as :

 
 
 
 

548. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

550. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

552. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

555. Male gametophyte of Selaginella is found:

 
 
 
 

556. Viroids have:

 
 
 
 

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

 
 
 
 

558. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

560. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

562. Which causes red tide?

 
 
 
 

563. . Tapetum develops in:

 
 
 
 

564. Yeast grows more rapidly in:

 
 
 
 

565. The lambda phase is a:

 
 
 
 

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

 
 
 
 

567. Which one of the following is a monocot?

 
 
 
 

568. Select the wrong statement:

 
 
 
 

569. Who named prion?

 
 
 
 

570. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Interferon is a:

 
 
 
 

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

 
 
 
 

579. The upper region of moss capsule is :

 
 
 
 

580. Common phycobiont in a lichen is :

 
 
 
 

581. The mode of nutrition of bacteria is usually:

 
 
 
 

582. An Hfr bacterium is one that contains:

 
 
 
 

583. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588.

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

 
 
 
 

590. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

592. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

594. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

596. All protozoans possess:

 
 
 
 

597. Ulothrix produces :

 
 
 
 

598. The Rhizopus gametes are formed in:

 
 
 
 

599. The male gametes of Pinus are :

 
 
 
 

600. Which of the following is a heterosporous pteridophyte?

 
 
 
 

601. Bacteria differ from viruses in being sensitive to:

 
 
 
 

602. Ovary is absent in :

 
 
 
 

603. Select the wrong statement:

 
 
 
 

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

 
 
 
 

605. Streptomyces falls under:

 
 
 
 

606. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

611. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

612. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

614. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

617. Lichens reproduce by :

 
 
 
 

618. Mycoplasma contains:

 
 
 
 

619. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

621. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. Virion refers to:

 
 
 
 

630. Which have the largest antherozoid?

 
 
 
 

631. Placenta in fern is:

 
 
 
 

632. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

634. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. Fruits are not found in :

 
 
 
 

638. Spermatophyta are characterized by producing:

 
 
 
 

639. Which is a gametophytic tissue?

 
 
 
 

640. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

642. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

644. What is a vector?

 
 
 
 

645. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Typhoid in man is caused by:

 
 
 
 

649. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

650. Red rot of sugarcane is caused by :

 
 
 
 

651. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

653. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

659. The gametophyte produced by apospory is :

 
 
 
 

660. Botulism is a:

 
 
 
 

661. Saccharomyces is well known for:

 
 
 
 

662. Cycas is :

 
 
 
 

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

 
 
 
 

664. Bryophyta have a special character from other plants:

 
 
 
 

665. The tallest moss in the world is :

 
 
 
 

666. The prothallus of fern represents the plant:

 
 
 
 

667. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

673. Roots are absent in :

 
 
 
 

674. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

676. Male gametes in Dryopteris are:

 
 
 
 

677. Black rust of wheat is caused by:

 
 
 
 

678. Seeds are characteristically found in :

 
 
 
 

679. To which class Riccia belongs :

 
 
 
 

680. Ovary is absent in:

 
 
 
 

681. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. The chief characteristic of bryophyta is that :

 
 
 
 

688. What is mycorrhiza?

 
 
 
 

689. Oswald Tippo’s classification was based on :

 
 
 
 

690. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Which of the following are included in Tracheophyta?

 
 
 
 

694. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Which organisms are the oldest life forms?

 
 
 
 

699. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

701. In Cycas microsporangia are borne on:

 
 
 
 

702. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

708. 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:

 
 
 
 

709. Cryptogams include :

 
 
 
 

710. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

713. The role of meiosis is for:

 
 
 
 

714. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

716. Among the algae kelps are :

 
 
 
 

717. Bacteria are found everywhere, except:

 
 
 
 

718. The sporangium of fern contains nearly:

 
 
 
 

719. The zygospore in Rhizopus on germination forms:

 
 
 
 

720. Rhizopus belongs to:

 
 
 
 

721. Fairy ring is the name given to:

 
 
 
 

722. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

724. Embryophyta includes :

 
 
 
 

725. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Meiosis in Ulothrix takes place:

 
 
 
 

729. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

731. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

734. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

736. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

738. Sexual reproduction of lichen is due to :

 
 
 
 

739. Amoeba is a member of the phylum:

 
 
 
 

740. Climbers are found in genus:

 
 
 
 

741. 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?

 
 
 
 

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

 
 
 
 

743. Which of the following have a prokaryotic cell?

 
 
 
 

744. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

746. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

748. The genetic material of poxvirus is:

 
 
 
 

749. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. Lichens are ecologically important because :

 
 
 
 

753. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

755. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

757. Most primitive embryophytes are placed in :

 
 
 
 

758. Rhizopus and yeast are usually:

 
 
 
 

759. Acetobacter is useful in:

 
 
 
 

760. Ovules are not found enclosed in ovary in :

 
 
 
 

761. Which condition is found in Cycas?

 
 
 
 

762. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

765. The vascular bundles of Cycas stem are :

 
 
 
 

766. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

768. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. In moss, stomata are found:

 
 
 
 

772. The smallest bacterium is:

 
 
 
 

773. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

777. Viruses are commonly transmitted in plants through:

 
 
 
 

778. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

781. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

786. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

788. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

790. Which of the following is a parasitic algae?

 
 
 
 

791. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

792. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Indusium in Dryopteris is:

 
 
 
 

797. Reproduction in Cycas takes place by :

 
 
 
 

798. The spur of Pinus roxburghii has :

 
 
 
 

799. The flagella of Chlamydomonas are:

 
 
 
 

800. The antherozoids of Funaria are :

 
 
 
 

801. In Cycas:

 
 
 
 

802. In angiosperms double fertilization represents:

 
 
 
 

803. Ergot of rye is caused by:

 
 
 
 

804. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

806. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

808. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Germination of the seed of Pinus is :

 
 
 
 

813. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

814. The development of Selaginella embryo is:

 
 
 
 

815. The group algae possesses representatives belonging to kingdom:

 
 
 
 

816. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

817. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. 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:

 
 
 
 

821. Azolla growing in paddy fields helps in:

 
 
 
 

822. Which among the following is a shrub?

 
 
 
 

823. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

824. Most resistant spore in bacteria is:

 
 
 
 

825. Red rot of sugarcane is caused by :

 
 
 
 

826. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

829. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

831. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

834. Most common type of conjugation in Spirogyra is :

 
 
 
 

835. The disease symptom necrosis refers to :

 
 
 
 

836. Endemic plants are characterised by their:

 
 
 
 

837. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

839. Which class of Protozoa includes all parasitic forms?

 
 
 
 

840. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

842. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

852. The tree fern is:

 
 
 
 

853. 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:

 
 
 
 

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

 
 
 
 

855. Cycas is similar to a mustard plant :

 
 
 
 

856. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. The chief characteristic of class Ascomycetes is:

 
 
 
 

860. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

862. Embryophyta includes:

 
 
 
 

863. The fungi that grow on wood are called:

 
 
 
 

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