Quiz_Random

1. Who named prion?

 
 
 
 

2. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

4. The prothallus of fern represents the plant:

 
 
 
 

5. The role of meiosis is for:

 
 
 
 

6. Bacteria are placed under:

 
 
 
 

7. The Rhizopus gametes are formed in:

 
 
 
 

8. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Rice, pea, potato are :

 
 
 
 

12. The upper region of moss capsule is :

 
 
 
 

13. Saccharomyces ludwigii ascus produces:

 
 
 
 

14. Meristele of fern is:

 
 
 
 

15. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

17. Among the algae kelps are :

 
 
 
 

18. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

20. The truncated cone of HIV consists of:

 
 
 
 

21. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. Quarantine regulations are concerned with:

 
 
 
 

25. The first to isolate a plant virus was:

 
 
 
 

26. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

28. Bacteria growing on synthetic medium are called:

 
 
 
 

29. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. The similarity between cyanobacteria and bacteria:

 
 
 
 

33. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

35. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Methanogens belong to:

 
 
 
 

39. Most primitive embryophytes are placed in:

 
 
 
 

40. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Leaf spot of groundnut is caused by :

 
 
 
 

45. Why is Cycas called a living fossil?

 
 
 
 

46. The term stele was given by:

 
 
 
 

47. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. The rhizoids of Funaria are :

 
 
 
 

51. Mycoplasma was discovered by:

 
 
 
 

52. Male gametes in Dryopteris are:

 
 
 
 

53. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

55. Fern prothallus produces:

 
 
 
 

56. Antibiotics cure the disease by:

 
 
 
 

57. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

59. 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:

 
 
 
 

60. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

62. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

64. Cycas is :

 
 
 
 

65. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

81. The chief characteristic of class Ascomycetes is:

 
 
 
 

82. The Rhizopus is:

 
 
 
 

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

 
 
 
 

84. The fungi are mostly:

 
 
 
 

85. Halophiles are the bacteria that require for growth:

 
 
 
 

86. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. In binomial system most of the words are:

 
 
 
 

90. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Lichens are ecologically important because :

 
 
 
 

94. Bacteria are found everywhere, except:

 
 
 
 

95. Which of the following have a prokaryotic cell?

 
 
 
 

96. Iodine is obtained from :

 
 
 
 

97. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Most of the algae are :

 
 
 
 

102. Proembryo in Pinus is :

 
 
 
 

103. The seedless plants which possess vascular tissues are:

 
 
 
 

104. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

106. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

108. Cleavage polyembryony is found in :

 
 
 
 

109. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

111. Climbers are found in genus:

 
 
 
 

112. Heterotrichous habit means :

 
 
 
 

113. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

115. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

117. Antibiotic has been extracted from :

 
 
 
 

118. What is mycorrhiza?

 
 
 
 

119. Enzymes are absent in:

 
 
 
 

120. The leaf of Cycas shows:

 
 
 
 

121. LSD is:

 
 
 
 

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

 
 
 
 

123. Which statement is wrong in regard to bacteria?

 
 
 
 

124. Mycoplasma are sensitive to:

 
 
 
 

125. Pollination drop is:

 
 
 
 

126. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

128. How is moss different from fern?

 
 
 
 

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

 
 
 
 

130. Germination of the seed of Pinus is :

 
 
 
 

131. Which condition is found in Cycas?

 
 
 
 

132. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Vascular tissue is found in :

 
 
 
 

138. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. The young leaves of Cycas have :

 
 
 
 

142. An alga which is rich in proteins:

 
 
 
 

143. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Triple antigen injection or vaccine are for:

 
 
 
 

153. Fern prothallus is:

 
 
 
 

154. Cyanophage is a virus that attacks:

 
 
 
 

155. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

157. The megasporangium of Selaginella is:

 
 
 
 

158. The plants of Funaria grow :

 
 
 
 

159. True sexuality is not found in:

 
 
 
 

160. Woody climbers are known as :

 
 
 
 

161. Cycas is different from mango in :

 
 
 
 

162. The ascus of yeast contains:

 
 
 
 

163. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Which of the following are absent in Mycoplasma?

 
 
 
 

167. Nannandria are:

 
 
 
 

168. Ergot of rye is caused by:

 
 
 
 

169. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Sexual reproduction in Rhizopus is by:

 
 
 
 

174. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. The phloem of vascular system of Cycas is :

 
 
 
 

178. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. Lichens are the indicator of pollution :

 
 
 
 

182. Heterosporous pteridophytes always form:

 
 
 
 

183. In moss, sporogenous tissue arises from:

 
 
 
 

184. In Cycas:

 
 
 
 

185. Facultative saprophyte is:

 
 
 
 

186. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

189. Gram stain is used to:

 
 
 
 

190. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. The leafy fern plant represents the:

 
 
 
 

197. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

199. Which among the following is a shrub?

 
 
 
 

200. Cycas is:

 
 
 
 

201. Cell walls of Gram-positive bacteria contain:

 
 
 
 

202.

 

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

 
 
 
 

204. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

206. The archegonia in Selaginella develop on:

 
 
 
 

207. Tautonyms are illegitimate in:

 
 
 
 

208. In moss, conducting tissue is made up of

 
 
 
 

209. Nitrogen-fixing bacteria may be located:

 
 
 
 

210. Yeast is a source of:

 
 
 
 

211. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

213. The spermatozoids of Cycas are :

 
 
 
 

214. Botulism is a:

 
 
 
 

215. The leaves of Funaria are :

 
 
 
 

216. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. Diphtheria is caused by:

 
 
 
 

227. Aflatoxin is produced as a product in :

 
 
 
 

228. White rust of crucifers is caused by:

 
 
 
 

229. What is a vector?

 
 
 
 

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

 
 
 
 

231. The coralloid roots are :

 
 
 
 

232. The chloroplast in Ulothrix is :

 
 
 
 

233. Reproduction in Cycas takes place by :

 
 
 
 

234. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

236. Lichens are indicators of :

 
 
 
 

237. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

240. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

245. Anoxygenic photosynthesis occurs in:

 
 
 
 

246. 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:

 
 
 
 

247. The sporangia of Selaginella are attached:

 
 
 
 

248. To which class Riccia belongs :

 
 
 
 

249. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

250. Saccharomyces is used in:

 
 
 
 

251. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

253. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

255. Indusium in Dryopteris is:

 
 
 
 

256. Agar-agar is obtained from:

 
 
 
 

257. Lichens are pioneers of vegetation in a :

 
 
 
 

258. The roots of Cycas are :

 
 
 
 

259. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

261. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

263. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

265. Viroids have:

 
 
 
 

266. The spur of Pinus roxburghii has :

 
 
 
 

267. Total parasites belong to:

 
 
 
 

268. What is streptomycin?

 
 
 
 

269. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

271. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

273. Pinus gerardiana is :

 
 
 
 

274. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. Cryptogams include :

 
 
 
 

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

 
 
 
 

286. Which of the following is a parasitic algae?

 
 
 
 

287. The chromosomal number in:

 
 
 
 

288. Which of the following have algal zone?

 
 
 
 

289. First animal pathogenic virus was discovered by:

 
 
 
 

290. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

292. Protozoans are considered animals because these are:

 
 
 
 

293. Pinus microsporophyll bears:

 
 
 
 

294. Protistan algae obtain their food as:

 
 
 
 

295. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

301. Bacteria were first discovered by:

 
 
 
 

302. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

306. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

311. Sporophyte of fern is:

 
 
 
 

312. Lichens show :

 
 
 
 

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

 
 
 
 

314. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Which of the following are included in Tracheophyta?

 
 
 
 

318. Black rust of wheat is caused by:

 
 
 
 

319. Germ theory of disease was proposed by:

 
 
 
 

320. Spores of which plants have chloroplast:

 
 
 
 

321. The development of sporangium in Selaginella is:

 
 
 
 

322. The mode of nutrition of bacteria is usually:

 
 
 
 

323. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

328. The alga, Spirogyra are found in :

 
 
 
 

329. Which of the following lichens is harmful?

 
 
 
 

330. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

332. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

334. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. What is the role of nitrifying bacteria?

 
 
 
 

339. Most of the lichens are composed of :

 
 
 
 

340. The fern plant is:

 
 
 
 

341. Which of the following is true for viruses?

 
 
 
 

342. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

344. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

346. Embryophyta includes :

 
 
 
 

347. The chief characteristic of bryophyta is that :

 
 
 
 

348. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

349. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

351. Lichens reproduce by :

 
 
 
 

352. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

354. Cyathia is characterized by:

 
 
 
 

355. Vegetative reproduction in Cycas is by means of :

 
 
 
 

356. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

358. Rhizopus belongs to:

 
 
 
 

359. Fern plants are:

 
 
 
 

360. Who discovered cyanophages?

 
 
 
 

361. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Virus and bacteriophage are made-up of:

 
 
 
 

366.

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

 
 
 
 

368. Streptomyces falls under:

 
 
 
 

369. Rhizopus and yeast are usually:

 
 
 
 

370. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Fertility of the soil is increased by:

 
 
 
 

375. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

376. Selaginella differs from Moss in having:

 
 
 
 

377. Most primitive embryophytes are placed in :

 
 
 
 

378. Funaria is :

 
 
 
 

379. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

384. Pinus is:

 
 
 
 

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

 
 
 
 

386. Banana bunchy top is caused by :

 
 
 
 

387. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

389. Oswald Tippo’s classification was based on :

 
 
 
 

390. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Generic name of mango is:

 
 
 
 

395. The fungi used as food are:

 
 
 
 

396. Bryophyta have a special character from other plants:

 
 
 
 

397. Pollination in Cycas takes place by :

 
 
 
 

398. Photoautotrophic bacteria have:

 
 
 
 

399. In Cycas the fertilization is:

 
 
 
 

400. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

401. Which of the following is a heterosporous pteridophyte?

 
 
 
 

402. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

404. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

406. Mycoplasma are:

 
 
 
 

407. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

409. The lichens growing on rocks are called :

 
 
 
 

410. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

412. In Herpes virus DNA is:

 
 
 
 

413. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

415. Centric discoid form of diatom is:

 
 
 
 

416. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

418. Which one of the following is a monocot?

 
 
 
 

419. Lichen show :

 
 
 
 

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

 
 
 
 

421. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

423. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

426. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

428. The largest alga is:

 
 
 
 

429. Cellular slime mold is:

 
 
 
 

430. Circular DNA is seen in:

 
 
 
 

431. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

433. Choose the correct statement about Spirogyra:

 
 
 
 

434. Cycas is similar to a mustard plant :

 
 
 
 

435. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

439. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

441. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

443. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. The smallest unit of classification is:

 
 
 
 

448. In Cycas which structure is equivalent to stamen?

 
 
 
 

449. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

451. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

455. Pollination in Pinus is :

 
 
 
 

456. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

460. Pteridophyta are also called:

 
 
 
 

461. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

463. Infective part of virus was discovered by:

 
 
 
 

464. All algae have:

 
 
 
 

465. In moss, sporophyte is formed on:

 
 
 
 

466. Heterospory and ligulate leaves are a feature of:

 
 
 
 

467. Lichens form the first community in

 
 
 
 

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

 
 
 
 

469. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

471. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

473. Parmelia belongs to :

 
 
 
 

474. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

476. The tallest moss in the world is :

 
 
 
 

477. Bentham and Hooker placed gymnosperms:

 
 
 
 

478. Which fixes atmospheric nitrogen?

 
 
 
 

479. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

483. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

498. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

499. 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?

 
 
 
 

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

 
 
 
 

501. Each chloroplast in Spirogyra bears :

 
 
 
 

502. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

512. Which of the following is a monocot?

 
 
 
 

513. Transfusion tissue is present in the leaflet of:

 
 
 
 

514. The group algae possesses representatives belonging to kingdom:

 
 
 
 

515. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

518. Spermatophyta are characterized by producing:

 
 
 
 

519. Which have the largest antherozoid?

 
 
 
 

520. What is special feature of fern archegonia?

 
 
 
 

521. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

523. Asexual reproductive body of Volvox is called:

 
 
 
 

524. Select the wrong statement:

 
 
 
 

525. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. Viruses have:

 
 
 
 

530. Mucilaginous canals in Cycas are found in :

 
 
 
 

531. Ulothrix produces :

 
 
 
 

532. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

533. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

535. Most resistant spore in bacteria is:

 
 
 
 

536. The tree fern is:

 
 
 
 

537. Which group of algae have an incipient nucleus?

 
 
 
 

538. Vascular cryptogam is the term used for :

 
 
 
 

539. In moss, peristomial teeth are:

 
 
 
 

540. Green plants are classified as :

 
 
 
 

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

 
 
 
 

542. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

547. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

549. Club moss and Peat moss belong to:

 
 
 
 

550. 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:

 
 
 
 

551. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

553. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

560. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. The order generally ends with:

 
 
 
 

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

 
 
 
 

568. Photosynthetic bacteria have:

 
 
 
 

569. Spermatophyta are characterized by producing:

 
 
 
 

570. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Funaria is a Bryophyta because :

 
 
 
 

578. Which causes red tide?

 
 
 
 

579. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

581. Disease resistant plant varieties can be produced by :

 
 
 
 

582. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Bryophyta have been placed in cryptogams because:

 
 
 
 

586. Virion refers to:

 
 
 
 

587. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

589. Bacteriophages have been used as:

 
 
 
 

590. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Chief constituents of bordeaux mixture are :

 
 
 
 

600. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

602. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

604. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

606. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. Red rot of sugarcane is caused by :

 
 
 
 

611. Mycoplasma is different from bacteria due to:

 
 
 
 

612. Funaria is :

 
 
 
 

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

 
 
 
 

614. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

616. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

618. Late blight of potato is caused by:

 
 
 
 

619. Which of the following is sago palm?

 
 
 
 

620. Ovary is absent in :

 
 
 
 

621. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

623. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. The gametophyte of fern bears:

 
 
 
 

628. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

630. Fruits are not found in :

 
 
 
 

631. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

633. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. John Hutchinson divided dicots into two divisions:

 
 
 
 

638. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

641. Soil fertility is lost by the activities of:

 
 
 
 

642. Photosynthetic protists belong to:

 
 
 
 

643. Mostly type of zygospore in Ulothrix is:

 
 
 
 

644. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

646. Ectocarpus produces:

 
 
 
 

647. Which is an exception to cell theory?

 
 
 
 

648. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

650. Which lichen is called Reindeer moss?

 
 
 
 

651. In a diplontic life cycle:

 
 
 
 

652. In Pteris, the roots are:

 
 
 
 

653. To which country Antony van Leeuwenhoek belong?

 
 
 
 

654. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

656. Psilotum is:

 
 
 
 

657. The sporangiophores in Rhizopus are:

 
 
 
 

658. Discovery of penicillin was based on:

 
 
 
 

659. Common phycobiont in a lichen is :

 
 
 
 

660. Most primitive group of vascular plants are:

 
 
 
 

661. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Wine turns sour because of:

 
 
 
 

665. Sometimes the bacterial cell is enclosed in:

 
 
 
 

666. Which class of Protozoa includes all parasitic forms?

 
 
 
 

667. Which is not found in bacteria?

 
 
 
 

668. The smallest bacterium is:

 
 
 
 

669. The stele of Dryopteris is a:

 
 
 
 

670. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. Most primitive kind of flower is represented by:

 
 
 
 

674. In moss, reduction division occurs in :

 
 
 
 

675. The leaves of Funaria are :

 
 
 
 

676. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Number of capsomeres forming capsid of TMV is:

 
 
 
 

681. TMV was isolated in crystalline form by:

 
 
 
 

682. Embryophyta includes:

 
 
 
 

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

 
 
 
 

684. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

689. The sporangium of fern contains nearly:

 
 
 
 

690. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

695. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701.

702. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

704. Lichens reproduce by :

 
 
 
 

705. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. Which part of Riccia bears nurse cells?

 
 
 
 

709. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

711. 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:

 
 
 
 

712. An Hfr bacterium is one that contains:

 
 
 
 

713. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

715. Pseudomycelium is found in:

 
 
 
 

716. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

718. Which of the following is true for Selaginella?

 
 
 
 

719. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

721. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

723. Vascular cryptogams is the term used for:

 
 
 
 

724. Linnaeus is credited with introducing:

 
 
 
 

725. In Pteris, the archegonia are present:

 
 
 
 

726. Viruses are considered to be:

 
 
 
 

727. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

729. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

731. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

733. The antherozoids of Funaria are :

 
 
 
 

734. Which is the correct statement about Selaginella?

 
 
 
 

735. In tracheophyta:

 
 
 
 

736. Longest known virus is:

 
 
 
 

737. Yeast grows more rapidly in:

 
 
 
 

738. Leprosy is caused by:

 
 
 
 

739. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. Acellular slime mold is/are:

 
 
 
 

743. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

745. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

753. In a bacteriophage, DNA is present in:

 
 
 
 

754. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

755. How a fern differs from a moss?

 
 
 
 

756. Which is the nuclear material in bacteria?

 
 
 
 

757. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

759. The largest known bacterium is:

 
 
 
 

760. Water bloom is generally caused by :

 
 
 
 

761. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

763. Azolla and Salvinia both are:

 
 
 
 

764. E coli is a:

 
 
 
 

765. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. In dinoflagellates, the two flagella are:

 
 
 
 

769. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

773. The microsporophylls on the cone of Cycas are :

 
 
 
 

774. 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?

 
 
 
 

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

 
 
 
 

776. The fungi are usually:

 
 
 
 

777. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

780. Which of the following are included in Tracheophyta?

 
 
 
 

781. NBG of Lucknow is now named as:

 
 
 
 

782. The photosynthetic protists are:

 
 
 
 

783. Most common type of conjugation in Spirogyra is :

 
 
 
 

784. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

785. Which of the following statement is correct?

 
 
 
 

786. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

788. Pythium debaryanum is the causative agent of:

 
 
 
 

789. In Funaria, calyptra is derived from :

 
 
 
 

790. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

795. The two conjugating gametangia of Rhizopus are:

 
 
 
 

796. Select the wrong statement:

 
 
 
 

797. 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?

 
 
 
 

798. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

800. Which is a gametophytic tissue?

 
 
 
 

801. Who discovered streptomycin?

 
 
 
 

802. Winged seeds are found in :

 
 
 
 

803. Who discovered heterothallism in fungi?

 
 
 
 

804. The disease symptom necrosis refers to :

 
 
 
 

805. Endemic plants are characterised by their:

 
 
 
 

806. Kuru, a human disease is caused by:

 
 
 
 

807. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

812. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

814. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

818. Which is an edible fungus?

 
 
 
 

819. Redness of red sea is due to :

 
 
 
 

820. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

822. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

824. Green plants are classified as:

 
 
 
 

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

 
 
 
 

826. Pteridophytes are also known as :

 
 
 
 

827. Pasteurized milk is:

 
 
 
 

828. Club moss is the common name of :

 
 
 
 

829. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

833. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

835. Placenta in fern is:

 
 
 
 

836. Metulae are found in:

 
 
 
 

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

 
 
 
 

838. In moss, calyptra is formed from:

 
 
 
 

839. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. Fruits are not found in:

 
 
 
 

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

 
 
 
 

850.

851. Aflatoxin is produced by:

 
 
 
 

852. Where does meiosis occur in yeast?

 
 
 
 

853. The sporophyte of Riccia is represented by :

 
 
 
 

854. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

856. Protists which are diploid reproduce sexually by:

 
 
 
 

857. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

859. 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:

 
 
 
 

860. Which of the following statements is not correct?

 
 
 
 

861. Reserve food in Euglena is:

 
 
 
 

862. Water-borne bacterial diseases are:

 
 
 
 

863. In Funaria :

 
 
 
 

864. 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: