Quiz_Random

1. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

6. Lichen show :

 
 
 
 

7. The lichens growing on rocks are called :

 
 
 
 

8. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. The leaf of Cycas shows:

 
 
 
 

12. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

14. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

16. Saccharomyces is well known for:

 
 
 
 

17. In tracheophyta:

 
 
 
 

18. Male gametophyte of Selaginella is found:

 
 
 
 

19. Which part of Riccia bears nurse cells?

 
 
 
 

20. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

22. Redness of red sea is due to :

 
 
 
 

23. Longest known virus is:

 
 
 
 

24. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

26. Ovules are not found enclosed in ovary in :

 
 
 
 

27. Majority of lichens are :

 
 
 
 

28. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. How a fern differs from a moss?

 
 
 
 

32. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

38. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

44. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Cocci types of bacteria are:

 
 
 
 

48. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

50. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

52. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

54. 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:

 
 
 
 

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

 
 
 
 

56. Total parasites belong to:

 
 
 
 

57. The tallest moss in the world is :

 
 
 
 

58. Pythium debaryanum is the causative agent of:

 
 
 
 

59. Which condition is found in Cycas?

 
 
 
 

60. The genetic material of poxvirus is:

 
 
 
 

61. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Which one of the following statement is wrong?

 
 
 
 

65. Broad spectrum antibiotic is, which:

 
 
 
 

66. The photosynthetic protists are:

 
 
 
 

67. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

69. Choose the correct statement about Spirogyra:

 
 
 
 

70. Enzymes are absent in:

 
 
 
 

71. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

72. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

74. Tautonyms are illegitimate in:

 
 
 
 

75. Acellular slime mold is/are:

 
 
 
 

76. Metulae are found in:

 
 
 
 

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

 
 
 
 

78. The zygospore in Rhizopus on germination forms:

 
 
 
 

79. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

81. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

86. One of the distinctive feature of Spirogyra is :

 
 
 
 

87. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

89. The coralloid roots are :

 
 
 
 

90. The central part of Funaria axis is :

 
 
 
 

91. To which country Antony van Leeuwenhoek belong?

 
 
 
 

92. Rice, pea, potato are :

 
 
 
 

93. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

97. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

99. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Cryptogams include :

 
 
 
 

103. To which class Riccia belongs :

 
 
 
 

104. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Funaria is :

 
 
 
 

108. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

110. Saccharomyces is used in:

 
 
 
 

111. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

114. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

115. Azolla growing in paddy fields helps in:

 
 
 
 

116. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Which of the following applies to Selaginella?

 
 
 
 

122. The sporangia of Selaginella are attached:

 
 
 
 

123. The tree fern is:

 
 
 
 

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

 
 
 
 

125. Gymnosperms could also be called as:

 
 
 
 

126. 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?

 
 
 
 

127. Lichens are the indicator of pollution :

 
 
 
 

128. In Pteris, the roots are:

 
 
 
 

129. The plants of Funaria grow :

 
 
 
 

130. Viroids have:

 
 
 
 

131. Germ theory of disease was proposed by:

 
 
 
 

132. Which bacteria convert nitrate into nitrogen?

 
 
 
 

133. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

135. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

136. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Sexual reproduction of lichen is due to :

 
 
 
 

140. Some biologists have used the term Mycetozoa for:

 
 
 
 

141. Sporophyte of Funaria is :

 
 
 
 

142. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

144. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

146. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

148. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

150. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

152. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

154. Mycoplasma contains:

 
 
 
 

155. The prothallus of fern represents the plant:

 
 
 
 

156. Most primitive group of vascular plants are:

 
 
 
 

157. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Yeast is a source of:

 
 
 
 

161. 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:

 
 
 
 

162. The truncated cone of HIV consists of:

 
 
 
 

163. The chief characteristic of class Ascomycetes is:

 
 
 
 

164. Meristele of fern is:

 
 
 
 

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

 
 
 
 

166. The flagella of Chlamydomonas are:

 
 
 
 

167. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Embryophyta includes :

 
 
 
 

174. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

176. Male gametes in Dryopteris are:

 
 
 
 

177. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

179. First animal pathogenic virus was discovered by:

 
 
 
 

180. The role of meiosis is for:

 
 
 
 

181. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

184. Ergot is obtained from :

 
 
 
 

185. Winged seeds are found in :

 
 
 
 

186. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

188. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

190. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

192. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

194. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Vascular cryptogams is the term used for:

 
 
 
 

198. In Herpes virus DNA is:

 
 
 
 

199. Most primitive kind of flower is represented by:

 
 
 
 

200. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. . Tapetum develops in:

 
 
 
 

206. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

208. Cycas is :

 
 
 
 

209. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

210. Azolla and Salvinia both are:

 
 
 
 

211. Clostridium can:

 
 
 
 

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

 
 
 
 

213. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

215. Yeast grows more rapidly in:

 
 
 
 

216. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. 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:

 
 
 
 

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

 
 
 
 

226. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Liverworts are included in :

 
 
 
 

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

 
 
 
 

232. Which one of the following is a monocot?

 
 
 
 

233. The largest known bacterium is:

 
 
 
 

234. The rhizoids of Funaria are :

 
 
 
 

235. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

237. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

239. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

241. Late blight of potato is caused by :

 
 
 
 

242. The sexual reproductive organs in Rhizopus are:

 
 
 
 

243. Linnaeus is credited with introducing:

 
 
 
 

244. Acetobacter is useful in:

 
 
 
 

245. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

247.

248. Bacteria are found everywhere, except:

 
 
 
 

249. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. Chemosynthetic bacteria are:

 
 
 
 

253. The antherozoids of Funaria are :

 
 
 
 

254. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Germination of the seed of Pinus is :

 
 
 
 

258. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

260. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. Heterocysts are found in :

 
 
 
 

264. The spermatozoids of Cycas are :

 
 
 
 

265. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

267. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. In a diplontic life cycle:

 
 
 
 

275. Psilotum is:

 
 
 
 

276. In moss, sporophyte is formed on:

 
 
 
 

277. Fruits are not found in:

 
 
 
 

278. Cycas revoluta is widely grown as :

 
 
 
 

279. Reproduction in Rhizopus is:

 
 
 
 

280. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

281. Club moss is the common name of :

 
 
 
 

282.

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

 
 
 
 

284. Isomorphic type alternation of generation is found in:

 
 
 
 

285. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

288. Placenta in fern is:

 
 
 
 

289. Which of the following lichens is harmful?

 
 
 
 

290. Most of the algae are :

 
 
 
 

291. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

293. Cycas is similar to a mustard plant :

 
 
 
 

294. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

296. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. Select the wrong statement:

 
 
 
 

301. Pasteurization of milk involves heating for:

 
 
 
 

302. Viruses have:

 
 
 
 

303. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Viruses are considered to be:

 
 
 
 

310. Fertility of the soil is increased by:

 
 
 
 

311. Generic name of mango is:

 
 
 
 

312. LSD is:

 
 
 
 

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

 
 
 
 

314. Banana bunchy top is caused by :

 
 
 
 

315. The middle sterile part of capsule is called:

 
 
 
 

316. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Bentham and Hooker placed gymnosperms:

 
 
 
 

320. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

324. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

326. Heterospory is the production of:

 
 
 
 

327. Black rust of wheat is caused by:

 
 
 
 

328. Each chloroplast in Spirogyra bears :

 
 
 
 

329. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

331. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

333. The megasporangium of Selaginella is:

 
 
 
 

334. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Pteridophytes are also known as :

 
 
 
 

339. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

344. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

346. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Ovary is absent in :

 
 
 
 

351. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Coenogamete is found in:

 
 
 
 

355. Helotism word is used for the symbiosis between :

 
 
 
 

356. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. Some bacteria cannot be killed easily because of:

 
 
 
 

360. Facultative parasite is:

 
 
 
 

361. Pasteurized milk is:

 
 
 
 

362. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

363. The chief characteristic of bryophyta is that :

 
 
 
 

364. Spermatophyta are characterized by producing:

 
 
 
 

365. TMV was isolated in crystalline form by:

 
 
 
 

366. What is absent in Deuteromycetes?

 
 
 
 

367. The group algae possesses representatives belonging to kingdom:

 
 
 
 

368. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Fern phloem lacks:

 
 
 
 

376. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Who among the following discovered virus?

 
 
 
 

380. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

382. The smallest unit of classification is:

 
 
 
 

383. The sporophyte of Riccia is :

 
 
 
 

384. Water-net is the name of:

 
 
 
 

385. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

387. Lichens are pioneers of vegetation in a :

 
 
 
 

388. Seeds are characteristically found in:

 
 
 
 

389. The fern plant is:

 
 
 
 

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

 
 
 
 

391. The sporangiophores in Rhizopus are:

 
 
 
 

392. Leaf spot of groundnut is caused by :

 
 
 
 

393. Fruits are not found in :

 
 
 
 

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

 
 
 
 

395. In Gymnocarpeae the fruiting body is :

 
 
 
 

396. Which of the following have a prokaryotic cell?

 
 
 
 

397. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

399. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

401. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Who named prion?

 
 
 
 

409. Botulinum toxin effects:

 
 
 
 

410. Spores of which plants have chloroplast:

 
 
 
 

411. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. Lichens are indicators of :

 
 
 
 

417. Pythium debaryanum is the causative agent of:

 
 
 
 

418.

 

419.

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

 
 
 
 

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

 
 
 
 

422. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

424. Citrus canker is caused by :

 
 
 
 

425. Protistan algae obtain their food as:

 
 
 
 

426. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

428. Which is an edible fungus?

 
 
 
 

429. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. In Cycas:

 
 
 
 

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

 
 
 
 

434. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

436. Which is a fungicide?

 
 
 
 

437. The megaspore of Selaginella on germination produces:

 
 
 
 

438. What is streptomycin?

 
 
 
 

439. Virion refers to:

 
 
 
 

440. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. Funaria can be differentiated from Cycas :

 
 
 
 

454. Citrus canker is caused by:

 
 
 
 

455. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

456. Lichens show :

 
 
 
 

457. In Funaria :

 
 
 
 

458. Red rot of sugarcane is caused by :

 
 
 
 

459. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

468. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

470. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

476. Cleavage polyembryony is found in :

 
 
 
 

477. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

485. The archegonia of Selaginella are differentiated by:

 
 
 
 

486. Cell walls of Gram-positive bacteria contain:

 
 
 
 

487. The Rhizopus gametes are formed in:

 
 
 
 

488. Cycas is different from mango in :

 
 
 
 

489. Plasmids are:

 
 
 
 

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

 
 
 
 

491. 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?

 
 
 
 

492. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

494. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

496. Which causes red tide?

 
 
 
 

497. NBG of Lucknow is now named as:

 
 
 
 

498. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

500. Who discovered streptomycin?

 
 
 
 

501. 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:

 
 
 
 

502. Bacteriophage consists of:

 
 
 
 

503. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

505. 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?

 
 
 
 

506. The development of sporangium in Selaginella is:

 
 
 
 

507. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

508. The smallest bacterium is:

 
 
 
 

509. Mycoplasma was discovered by:

 
 
 
 

510. Funaria is a Bryophyta because :

 
 
 
 

511. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

513. The fungi are mostly:

 
 
 
 

514. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

515. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

517. Ergot of rye is caused by:

 
 
 
 

518. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

520. Sporophyte of fern is:

 
 
 
 

521. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

526. True sexuality is not found in:

 
 
 
 

527. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

529. Why is Cycas called a living fossil?

 
 
 
 

530. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

532. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

534. Economic importance of bacteria lies in their being:

 
 
 
 

535. Small epidermal swellings due to infection are called :

 
 
 
 

536. The disease symptom necrosis refers to :

 
 
 
 

537. Which is a tautonym?

 
 
 
 

538. Heterotrichous habit means :

 
 
 
 

539. The two conjugating gametangia of Rhizopus are:

 
 
 
 

540. Lichens are ecologically important because :

 
 
 
 

541. The ferns are usually found:

 
 
 
 

542. Pinus gerardiana is :

 
 
 
 

543. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

545. Transfusion tissue is present in the leaflet of:

 
 
 
 

546. Which is not found in bacteria?

 
 
 
 

547. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

549. Most of the lichens are composed of :

 
 
 
 

550. 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:

 
 
 
 

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

 
 
 
 

552. Virus and bacteriophage are made-up of:

 
 
 
 

553. Photosynthetic protists belong to:

 
 
 
 

554. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

556. In binomial system most of the words are:

 
 
 
 

557. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

567. The fungi are usually:

 
 
 
 

568. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

570. Cap cells are found in the filament of:

 
 
 
 

571. Which of the following is true for Selaginella?

 
 
 
 

572. Fern plants are:

 
 
 
 

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

 
 
 
 

574. Centric discoid form of diatom is:

 
 
 
 

575. Chemosynthetic bacteria are:

 
 
 
 

576. Pollination in Cycas takes place by :

 
 
 
 

577. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. Methanogens belong to:

 
 
 
 

581. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

583. Which organisms are the oldest life forms?

 
 
 
 

584. Cellular slime mold is:

 
 
 
 

585. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

587. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. The young leaves of Cycas have :

 
 
 
 

599. Streptomycin is obtained from:

 
 
 
 

600. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

602. In angiosperms double fertilization represents:

 
 
 
 

603. Maximum diversity of life forms occurs in :

 
 
 
 

604. What are Cyanobacteria?

 
 
 
 

605. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

611. Nannandria are:

 
 
 
 

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

 
 
 
 

613. Parmelia belongs to :

 
 
 
 

614. Spirogyra differs from moss protonema in having :

 
 
 
 

615. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. Which of the following is true for viruses?

 
 
 
 

619. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

621. Bacteria differ from viruses in being sensitive to:

 
 
 
 

622. Common phycobiont in a lichen is :

 
 
 
 

623. Botulism is a:

 
 
 
 

624. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

629. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. The upper region of moss capsule is :

 
 
 
 

633. The seedless plants which possess vascular tissues are:

 
 
 
 

634. The zoospores of Ulothrix are :

 
 
 
 

635. Lichens reproduce by :

 
 
 
 

636. Fairy ring is the name given to:

 
 
 
 

637. Funaria is :

 
 
 
 

638. Mycoplasma are sensitive to:

 
 
 
 

639. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

642. Smallpox is caused by:

 
 
 
 

643. Ethylene oxide is widely used to:

 
 
 
 

644. Which is the nuclear material in bacteria?

 
 
 
 

645. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. 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:

 
 
 
 

649. Amoeba is a member of the phylum:

 
 
 
 

650. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

652. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

655. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

660. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

662. Ovary is absent in:

 
 
 
 

663. Which of the following statements is not correct?

 
 
 
 

664. Oswald Tippo’s classification is:

 
 
 
 

665. Iodine is obtained from:

 
 
 
 

666. Cyanophage is a virus that attacks:

 
 
 
 

667. Chief constituents of bordeaux mixture are :

 
 
 
 

668. The spur of Pinus roxburghii has :

 
 
 
 

669. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

672. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

673. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

678. In Selaginella, the microsporangia are:

 
 
 
 

679. Mycoplasma are:

 
 
 
 

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

 
 
 
 

681. Embryophyta includes:

 
 
 
 

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

 
 
 
 

683. The lambda phase is a:

 
 
 
 

684. Cyathia is characterized by:

 
 
 
 

685. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

687. The leaves of Funaria are :

 
 
 
 

688. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

690. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

692. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

694. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. Which group of algae have an incipient nucleus?

 
 
 
 

698. Roots are absent in :

 
 
 
 

699. In moss, calyptra is formed from:

 
 
 
 

700. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. The chloroplast in Ulothrix is :

 
 
 
 

704. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

706. The male gametes of Pinus are :

 
 
 
 

707. Facultative saprophyte is:

 
 
 
 

708. The term stele was given by:

 
 
 
 

709. Black rust of wheat is caused by:

 
 
 
 

710. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

712. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

714. Genetic material of TMV is:

 
 
 
 

715. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

717. The fungi that grow on wood are called:

 
 
 
 

718. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

719. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Pinus is:

 
 
 
 

723. Antibiotic has been extracted from :

 
 
 
 

724. Penicillin was discovered by:

 
 
 
 

725. Spermatophyta are characterized by producing:

 
 
 
 

726. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

731. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

735. Pollination in Pinus is :

 
 
 
 

736. Simple polyembryony is found in :

 
 
 
 

737. Vascular tissue is found in :

 
 
 
 

738. Viruses are commonly transmitted in plants through:

 
 
 
 

739. Indusium in Dryopteris is:

 
 
 
 

740. Spirogyra represents the :

 
 
 
 

741. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

743. In Funaria, calyptra is derived from :

 
 
 
 

744. Ginkgo biloba is a:

 
 
 
 

745. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

746. The first to isolate a plant virus was:

 
 
 
 

747. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

749. Bacteria are considered to be plants because they:

 
 
 
 

750. In Pteris, the archegonia are present:

 
 
 
 

751. Disease resistant plant varieties can be produced by :

 
 
 
 

752. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. The fungi used as food are:

 
 
 
 

762. The gametophyte of moss has distinct phases :

 
 
 
 

763. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

765. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Multicellular and jacketed sex organs are found in :

 
 
 
 

773. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

775. The gametophyte produced by apospory is :

 
 
 
 

776. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. Interferon is a:

 
 
 
 

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

 
 
 
 

781. Meiosis in Ulothrix takes place:

 
 
 
 

782. Bivalved siliceous shell or frustule occur in:

 
 
 
 

783. Most primitive embryophytes are placed in:

 
 
 
 

784. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

786. Which among the following is a shrub?

 
 
 
 

787. Yeast belongs to class:

 
 
 
 

788. What are plasmids?

 
 
 
 

789. Triple antigen injection or vaccine are for:

 
 
 
 

790. Aflatoxin is produced by:

 
 
 
 

791. Mycoplasmas are not viruses in nature because:

 
 
 
 

792. The nucleus of bacteria is:

 
 
 
 

793. Pasteur is famous for his:

 
 
 
 

794. Synzoospore is produced in:

 
 
 
 

795. The chromosomal number in:

 
 
 
 

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

 
 
 
 

797. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. Pteridophyta are also called:

 
 
 
 

802. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

804. Etiology includes the study of :

 
 
 
 

805. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

808. Ovules are not found enclosed in ovary of:

 
 
 
 

809. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. In moss, stomata are found:

 
 
 
 

813. Who discovered heterothallism in fungi?

 
 
 
 

814. Most resistant spore in bacteria is:

 
 
 
 

815. Which of the following have algal zone?

 
 
 
 

816. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. The order generally ends with:

 
 
 
 

825. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Ulothrix produces :

 
 
 
 

829. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

831. The Rhizopus is:

 
 
 
 

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

 
 
 
 

833. The source of litmus is :

 
 
 
 

834. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. Kuru, a human disease is caused by:

 
 
 
 

840. The gametophyte of fern bears:

 
 
 
 

841. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

843. Gram stain is used to:

 
 
 
 

844. Bacteria were first discovered by:

 
 
 
 

845. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

847. Which of the following are included in Tracheophyta?

 
 
 
 

848. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

850. The mode of nutrition of bacteria is usually:

 
 
 
 

851. Where does meiosis occur in yeast?

 
 
 
 

852. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Green plants are classified as:

 
 
 
 

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

 
 
 
 

857. The DNA of E coli is:

 
 
 
 

858. Downy mildew disease is caused by :

 
 
 
 

859. Select the wrong statement:

 
 
 
 

860. Which is not true for Escherichia coli?

 
 
 
 

861. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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