Quiz_Random

1. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

3. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Bryophyta have a special character from other plants:

 
 
 
 

12. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

14. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

16. Leaf spot of groundnut is caused by :

 
 
 
 

17. Which of the following does not contain chlorophyll?

 
 
 
 

18. Select the correct statement: (NEET 2016)

 
 
 
 

19. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

21. Most primitive embryophytes are placed in :

 
 
 
 

22. Some bacteria cannot be killed easily because of:

 
 
 
 

23. The central part of Funaria axis is :

 
 
 
 

24. The largest alga is:

 
 
 
 

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

 
 
 
 

26. Which is absent from the xylem of Cycas?

 
 
 
 

27. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

29. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

31. Which is a redwood tree?

 
 
 
 

32. Nannandria are:

 
 
 
 

33. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

35. The prothallus of fern is:

 
 
 
 

36. Plasmids are:

 
 
 
 

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

 
 
 
 

38. The fungi that grow on wood are called:

 
 
 
 

39. Germination of the seed of Pinus is :

 
 
 
 

40. How is moss different from fern?

 
 
 
 

41. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. In moss, calyptra is formed from:

 
 
 
 

45. The source of litmus is :

 
 
 
 

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

 
 
 
 

47. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

53. Ovary is absent in:

 
 
 
 

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

 
 
 
 

55. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

60. Ectocarpus produces:

 
 
 
 

61. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68.

69. The disease apple scab is caused by:

 
 
 
 

70. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

71. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

78. The fungi used as food are:

 
 
 
 

79. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

81. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Male gametophyte of Selaginella is found:

 
 
 
 

85. The truncated cone of HIV consists of:

 
 
 
 

86. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

88. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Zoogametes are not found in:

 
 
 
 

96. The tree fern is:

 
 
 
 

97. Most primitive group of vascular plants are:

 
 
 
 

98. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

103. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

105. Bacteria are considered to be plants because they:

 
 
 
 

106. Mycoplasma was discovered by:

 
 
 
 

107. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

109. Rhizopus belongs to:

 
 
 
 

110. Gram stain is used to:

 
 
 
 

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

 
 
 
 

112. Saccharomyces is used in:

 
 
 
 

113. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. Where does meiosis occur in yeast?

 
 
 
 

120. Funaria is :

 
 
 
 

121. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. The gametophyte of moss has distinct phases :

 
 
 
 

125. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

127. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

128. Ovules are not found enclosed in ovary of:

 
 
 
 

129. Cell walls of Gram-positive bacteria contain:

 
 
 
 

130. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

136. Black rust of wheat is caused by:

 
 
 
 

137. Generic name of mango is:

 
 
 
 

138. Mostly type of zygospore in Ulothrix is:

 
 
 
 

139. Diploxylic vascular bundles are found in:

 
 
 
 

140. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

141. The chloroplast in Ulothrix is :

 
 
 
 

142. Among the algae kelps are :

 
 
 
 

143. The sexual reproductive organs in Rhizopus are:

 
 
 
 

144. Milk is converted to curd by:

 
 
 
 

145. Lichen show :

 
 
 
 

146. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

147. Yeast grows more rapidly in:

 
 
 
 

148. Viruses have:

 
 
 
 

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

 
 
 
 

150. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

152. The roots of Cycas are :

 
 
 
 

153. In Pteris, the roots are:

 
 
 
 

154. Meristele of fern is:

 
 
 
 

155. Tautonyms are illegitimate in:

 
 
 
 

156. Acetobacter is useful in:

 
 
 
 

157. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

167. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

169. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

172. Quarantine regulations are concerned with:

 
 
 
 

173. Embryophyta includes:

 
 
 
 

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

 
 
 
 

175. The Rhizopus gametes are formed in:

 
 
 
 

176. The ascus of yeast contains:

 
 
 
 

177. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

179. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

182. All archaebacteria lack:

 
 
 
 

183. Citrus canker is caused by :

 
 
 
 

184. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

186. Absorptive nutrition is:

 
 
 
 

187. Ethylene oxide is widely used to:

 
 
 
 

188. Asexual reproductive body of Volvox is called:

 
 
 
 

189. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. The megaspore of Selaginella on germination produces:

 
 
 
 

196. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

197. In Funaria, calyptra is derived from :

 
 
 
 

198. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

200. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

202. Which organisms are the oldest life forms?

 
 
 
 

203. Some diseases caused by bacteria are:

 
 
 
 

204. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

206. The gametophyte of fern bears:

 
 
 
 

207. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

209. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

211. Winged pollen grains are found in :

 
 
 
 

212. The leaves of Funaria are :

 
 
 
 

213. Early blight of potato is caused by:

 
 
 
 

214. Azolla and Salvinia both are:

 
 
 
 

215. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

217. The photosynthetic protists are:

 
 
 
 

218. Banana bunchy top is caused by :

 
 
 
 

219. Sporophyte of fern is:

 
 
 
 

220. In moss, peristomial teeth are:

 
 
 
 

221. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

223. Funaria are commonly found :

 
 
 
 

224. The lambda phase is a:

 
 
 
 

225. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

227. Soil fertility is lost by the activities of:

 
 
 
 

228. Which of the following is a monocot?

 
 
 
 

229. Club moss is the common name of :

 
 
 
 

230. Most primitive kind of flower is represented by:

 
 
 
 

231. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. Total parasites belong to:

 
 
 
 

235. The orders generally have the uniform endings:

 
 
 
 

236. Ergot of rye is caused by:

 
 
 
 

237. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

239. The sporangia of Selaginella are attached:

 
 
 
 

240. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

244. The archegonia of Selaginella are differentiated by:

 
 
 
 

245. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

247. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

249. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. 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?

 
 
 
 

258. The seedless plants which possess vascular tissues are:

 
 
 
 

259. Yeast belongs to class:

 
 
 
 

260. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

262. Select the wrong statement:

 
 
 
 

263. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

268. Anoxygenic photosynthesis occurs in:

 
 
 
 

269. Ovary is absent in :

 
 
 
 

270. . Tapetum develops in:

 
 
 
 

271. Discovery of penicillin was based on:

 
 
 
 

272. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

274. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

276. Botulism is a:

 
 
 
 

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

 
 
 
 

278. Genetic material of TMV is:

 
 
 
 

279. Cycas plant in appearance resembles :

 
 
 
 

280. Economic importance of bacteria lies in their being:

 
 
 
 

281. Photosynthetic protists belong to:

 
 
 
 

282. Detailed study of bacteriophage was made by:

 
 
 
 

283. Which of the following are absent in Mycoplasma?

 
 
 
 

284. The chromosomal number in:

 
 
 
 

285. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

287. Funaria is :

 
 
 
 

288. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Which causes red tide?

 
 
 
 

292. In angiosperms double fertilization represents:

 
 
 
 

293. Mycoplasma contains:

 
 
 
 

294. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

296. Most resistant spore in bacteria is:

 
 
 
 

297. Smallpox is caused by:

 
 
 
 

298. Cycas revoluta is widely grown as :

 
 
 
 

299. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

301. Which is the nuclear material in bacteria?

 
 
 
 

302. Which fixes atmospheric nitrogen?

 
 
 
 

303. Cycas is similar to a mustard plant :

 
 
 
 

304. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

307. Fruits are not found in:

 
 
 
 

308. Oswald Tippo’s classification was based on :

 
 
 
 

309. Circular DNA is seen in:

 
 
 
 

310. Aflatoxin is produced by:

 
 
 
 

311. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

313. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

315. Parmelia belongs to :

 
 
 
 

316. The spermatozoids of Cycas are :

 
 
 
 

317. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

319. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

321. Mixed cropping helps :

 
 
 
 

322.

 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. Standard size of a herbarium sheet is:

 
 
 
 

328. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

330. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

331. Who discovered cyanophages?

 
 
 
 

332. How a fern differs from a moss?

 
 
 
 

333. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

334. Woody climbers are known as :

 
 
 
 

335. The megasporangium of Selaginella is:

 
 
 
 

336. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. The young leaves of Cycas have :

 
 
 
 

344. Cycas is :

 
 
 
 

345. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

347. Transfusion tissue is present in the leaflet of:

 
 
 
 

348. Cycas is different from mango in :

 
 
 
 

349. The rhizoids of Funaria are :

 
 
 
 

350. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. The archegonia in Selaginella develop on:

 
 
 
 

354. The order generally ends with:

 
 
 
 

355. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

357. Which is an exception to cell theory?

 
 
 
 

358. Which of the following is true for Selaginella?

 
 
 
 

359. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

361. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

363. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

364. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

366. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

368. Siphonogamy is found in:

 
 
 
 

369. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

371. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

376. Which of the following applies to Selaginella?

 
 
 
 

377. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. Pneumonia is caused by:

 
 
 
 

381. Lichens reproduce by :

 
 
 
 

382. Spirogyra differs from moss protonema in having :

 
 
 
 

383. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. The leaves of Funaria are :

 
 
 
 

387. Lichens form the first community in

 
 
 
 

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

 
 
 
 

389. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. The male gametes of Pinus are :

 
 
 
 

394. Ginkgo biloba is a:

 
 
 
 

395. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

401. Which of the following lichens is harmful?

 
 
 
 

402. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

404. In dinoflagellates, the two flagella are:

 
 
 
 

405. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

410. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. Heterotrichous habit means :

 
 
 
 

415. Bacteria which are spherical are called:

 
 
 
 

416. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

419. The ferns are usually found:

 
 
 
 

420. Fern plants are:

 
 
 
 

421. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. Common phycobiont in a lichen is :

 
 
 
 

425. Pteridophyta are also called:

 
 
 
 

426. Small epidermal swellings due to infection are called :

 
 
 
 

427. The disease symptom necrosis refers to :

 
 
 
 

428. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

431. Funaria can be differentiated from Cycas :

 
 
 
 

432. The most primitive vascular plants is:

 
 
 
 

433. In moss, reduction division occurs in :

 
 
 
 

434. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. The Rhizopus is:

 
 
 
 

438. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

440. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

442. The DNA of E coli is:

 
 
 
 

443. Who named prion?

 
 
 
 

444. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

446. Fern phloem lacks:

 
 
 
 

447. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Which is a tautonym?

 
 
 
 

451. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Which part of Riccia bears nurse cells?

 
 
 
 

455. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

457. Pollination in Pinus is :

 
 
 
 

458. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

459. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

464. White rust of crucifers is caused by:

 
 
 
 

465. Fern prothallus is:

 
 
 
 

466. In Funaria :

 
 
 
 

467. Simple polyembryony is found in :

 
 
 
 

468. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

470.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Special feature of pollen grains of Pinus is :

 
 
 
 

475. Which of the following statement is correct?

 
 
 
 

476. The zygospore in Rhizopus on germination forms:

 
 
 
 

477. Disease resistant plant varieties can be produced by :

 
 
 
 

478. 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:

 
 
 
 

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

 
 
 
 

480. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

481. 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:

 
 
 
 

482. Which of the following shows heterotrichous habit?

 
 
 
 

483. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Streptomyces falls under:

 
 
 
 

487. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. 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:

 
 
 
 

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

 
 
 
 

493. TMV was isolated in crystalline form by:

 
 
 
 

494. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. Oswald Tippo’s classification is:

 
 
 
 

498. Heterocysts are found in :

 
 
 
 

499. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

501. Maximum diversity of life forms occurs in :

 
 
 
 

502. The term stele was given by:

 
 
 
 

503. Viruses are commonly transmitted in plants through:

 
 
 
 

504. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Pinus microsporophyll bears:

 
 
 
 

508. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. The sporophyte of Riccia is represented by :

 
 
 
 

514. Bacteria are placed under:

 
 
 
 

515. Which is not true for Escherichia coli?

 
 
 
 

516. Roots are absent in :

 
 
 
 

517. Facultative saprophyte is:

 
 
 
 

518. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

521. Citrus canker is caused by:

 
 
 
 

522. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

525. Which of the following are included in Tracheophyta?

 
 
 
 

526. Sexual reproduction of lichen is due to :

 
 
 
 

527. Reproduction in Rhizopus is:

 
 
 
 

528. Club moss and Peat moss belong to:

 
 
 
 

529. Cap cells are found in the filament of:

 
 
 
 

530. Smut of maize is caused by :

 
 
 
 

531. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. Winged seeds are found in :

 
 
 
 

537. Liverworts are included in :

 
 
 
 

538. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

543. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. 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?

 
 
 
 

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

 
 
 
 

549. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

551. John Hutchinson divided dicots into two divisions:

 
 
 
 

552. Seeds are characteristically found in:

 
 
 
 

553. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

555. The role of meiosis is for:

 
 
 
 

556. The alga, Spirogyra are found in :

 
 
 
 

557. The smallest unit of classification is:

 
 
 
 

558. Green plants are classified as:

 
 
 
 

559. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

561. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

563. In moss, sporophyte is formed on:

 
 
 
 

564. The leafy fern plant represents the:

 
 
 
 

565. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

566. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

571. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. In Cycas the fertilization is:

 
 
 
 

579. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

581. Rhizophore of Selaginella is:

 
 
 
 

582. The largest known bacterium is:

 
 
 
 

583. Lichens show :

 
 
 
 

584. Embryophyta includes :

 
 
 
 

585. Each chloroplast in Spirogyra bears :

 
 
 
 

586. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

588. Photoautotrophic bacteria have:

 
 
 
 

589. Why is Cycas called a living fossil?

 
 
 
 

590. The microsporophylls on the cone of Cycas are :

 
 
 
 

591. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

593. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

595. Rice, pea, potato are :

 
 
 
 

596. Interferon is a:

 
 
 
 

597. Acellular slime mold is/are:

 
 
 
 

598. 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?

 
 
 
 

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

 
 
 
 

600. The development of sporangium in Selaginella is:

 
 
 
 

601. Gymnosperms could also be called as:

 
 
 
 

602. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

608. Water-net is the name of:

 
 
 
 

609. Red rot of sugarcane is caused by :

 
 
 
 

610. Psilotum is:

 
 
 
 

611. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

613. Infective part of virus was discovered by:

 
 
 
 

614. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

615. Spirogyra represents the :

 
 
 
 

616. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

618. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

620. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

623. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

625. Gametophyte is the main plant body in :

 
 
 
 

626. The genetic material of poxvirus is:

 
 
 
 

627. The coralloid roots are :

 
 
 
 

628. Water bloom is generally caused by :

 
 
 
 

629. True sexuality is not found in:

 
 
 
 

630. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

632.

633. What are Cyanobacteria?

 
 
 
 

634. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. Mycoplasma are:

 
 
 
 

639. To which country Antony van Leeuwenhoek belong?

 
 
 
 

640. Diphtheria is caused by:

 
 
 
 

641. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

643. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

645. Viroids have:

 
 
 
 

646. Bivalved siliceous shell or frustule occur in:

 
 
 
 

647. Lichens are pioneers of vegetation in a :

 
 
 
 

648. Which is a gametophytic tissue?

 
 
 
 

649. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

651. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

653. The fungi are mostly:

 
 
 
 

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

 
 
 
 

655. Pollination drop is:

 
 
 
 

656. Fruiting body of lichens is :

 
 
 
 

657. Which is an edible fungus?

 
 
 
 

658. E coli is a:

 
 
 
 

659. Sleeping sickness disease in man is caused by:

 
 
 
 

660. Vascular tissue is found in :

 
 
 
 

661. 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:

 
 
 
 

662. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

666. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. The plants of Funaria grow :

 
 
 
 

670. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Methanogens belong to:

 
 
 
 

681. Placenta in fern is:

 
 
 
 

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

 
 
 
 

683. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. The most important property of yeast is:

 
 
 
 

688. Clostridium can:

 
 
 
 

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

 
 
 
 

690. Protists which are diploid reproduce sexually by:

 
 
 
 

691. A gill of Agaricus:

 
 
 
 

692. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

694. What is the role of nitrifying bacteria?

 
 
 
 

695. Pteridophytes are also known as :

 
 
 
 

696. The tallest moss in the world is :

 
 
 
 

697. Which of the following statements is not correct?

 
 
 
 

698. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

700. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. Which of the following have algal zone?

 
 
 
 

705. LSD is:

 
 
 
 

706. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. Facultative parasite is:

 
 
 
 

710. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

712. The chief characteristic of class Ascomycetes is:

 
 
 
 

713. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

715. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

717. Water-borne bacterial diseases are:

 
 
 
 

718. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

720. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

723. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

729. The prothallus of fern represents the plant:

 
 
 
 

730. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

732. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

734. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

736. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

738. Most of the lichens are composed of :

 
 
 
 

739. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

741. All protozoans possess:

 
 
 
 

742. What are plasmids?

 
 
 
 

743. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

745. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. The leaf of Cycas shows:

 
 
 
 

749. Which is a fungicide?

 
 
 
 

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

 
 
 
 

751. Virion refers to:

 
 
 
 

752. Pasteur is famous for his:

 
 
 
 

753. Funaria is a Bryophyta because :

 
 
 
 

754. Iodine is obtained from :

 
 
 
 

755. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Photosynthetic bacteria have:

 
 
 
 

759. Which bacteria convert nitrate into nitrogen?

 
 
 
 

760. Which statement is wrong in regard to bacteria?

 
 
 
 

761. Metulae are found in:

 
 
 
 

762. 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:

 
 
 
 

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

 
 
 
 

764. The spur of Pinus roxburghii has :

 
 
 
 

765. Choose the correct statement about Spirogyra:

 
 
 
 

766. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

768. Which class of Protozoa includes all parasitic forms?

 
 
 
 

769. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

771. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

773. Lichens are the indicator of pollution :

 
 
 
 

774. The fungi are usually:

 
 
 
 

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

 
 
 
 

776. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

778. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

785. Leprosy is caused by:

 
 
 
 

786. Bacteria are found everywhere, except:

 
 
 
 

787. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

788. In tracheophyta:

 
 
 
 

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

 
 
 
 

790. Desired type of Cycas can be grown by:

 
 
 
 

791. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. Centric discoid form of diatom is:

 
 
 
 

799. Halophiles are the bacteria that require for growth:

 
 
 
 

800. In Cycas microsporangia are borne on:

 
 
 
 

801. Heterospory and ligulate leaves are a feature of:

 
 
 
 

802. Seeds are characteristically found in :

 
 
 
 

803. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. Bryophyta have been placed in cryptogams because:

 
 
 
 

807. Black rust of wheat is caused by:

 
 
 
 

808. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Viruses are considered to be:

 
 
 
 

812. Fruits are not found in :

 
 
 
 

813. Enteric bacteria are those bacteria that live:

 
 
 
 

814. Bacteria growing on synthetic medium are called:

 
 
 
 

815. Sexual reproduction in Rhizopus is by:

 
 
 
 

816. 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:

 
 
 
 

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

 
 
 
 

818. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

819. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

821. 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?

 
 
 
 

822. Pasteurization of milk involves heating for:

 
 
 
 

823. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

825. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Which of the following is true for viruses?

 
 
 
 

829. In Cycas:

 
 
 
 

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

 
 
 
 

831. Aflatoxin is produced as a product in :

 
 
 
 

832. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

844. Germ theory of disease was proposed by:

 
 
 
 

845. Longest known virus is:

 
 
 
 

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

 
 
 
 

847. Heterosporous pteridophytes always form:

 
 
 
 

848. The chief characteristic of bryophyta is that :

 
 
 
 

849. The sporangiophores in Rhizopus are:

 
 
 
 

850. Spermatophyta are characterized by producing:

 
 
 
 

851. Majority of lichens are :

 
 
 
 

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

 
 
 
 

853. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

856. Red rot of sugarcane is caused by:

 
 
 
 

857. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

862. The mycelium of Rhizopus is:

 
 
 
 

863. Cycas is:

 
 
 
 

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