Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Which part of Riccia bears nurse cells?

 
 
 
 

7. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Lichens reproduce by :

 
 
 
 

12. 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:

 
 
 
 

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

 
 
 
 

14. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Lichens show :

 
 
 
 

19. The fern plant is:

 
 
 
 

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

 
 
 
 

21. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Club moss and Peat moss belong to:

 
 
 
 

34. Reproduction in Rhizopus is:

 
 
 
 

35. What is streptomycin?

 
 
 
 

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

 
 
 
 

37. Wine turns sour because of:

 
 
 
 

38. Transfusion tissue is present in the leaflet of:

 
 
 
 

39. What is the role of nitrifying bacteria?

 
 
 
 

40. Cocci types of bacteria are:

 
 
 
 

41. Which statement is wrong in regard to bacteria?

 
 
 
 

42. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

56. Generic name of mango is:

 
 
 
 

57. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

59. In Funaria :

 
 
 
 

60. Heterotrichous habit means :

 
 
 
 

61. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Mostly type of zygospore in Ulothrix is:

 
 
 
 

67. 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:

 
 
 
 

68. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

73.

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

 
 
 
 

75. Select the correct statement: (NEET 2016)

 
 
 
 

76. Yeast belongs to class:

 
 
 
 

77. Embryo formation is not known in :

 
 
 
 

78. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. The rhizoids of Funaria are :

 
 
 
 

88. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

90. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

92. Early blight of potato is caused by:

 
 
 
 

93. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Mixed cropping helps :

 
 
 
 

101. The disease symptom necrosis refers to :

 
 
 
 

102. The mode of nutrition of bacteria is usually:

 
 
 
 

103. Which is an edible fungus?

 
 
 
 

104. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

106. Ergot is obtained from :

 
 
 
 

107. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

109. The root nodules of leguminous plants contain:

 
 
 
 

110. The fungi that grow on wood are called:

 
 
 
 

111. Which bacteria convert nitrate into nitrogen?

 
 
 
 

112. Which causes red tide?

 
 
 
 

113. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

115. Streptomyces falls under:

 
 
 
 

116. Spermatophyta are characterized by producing:

 
 
 
 

117. Funaria are commonly found :

 
 
 
 

118. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Pollination in Pinus is :

 
 
 
 

129. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

131. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

133. In a diplontic life cycle:

 
 
 
 

134. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

136. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

138. The largest known bacterium is:

 
 
 
 

139. The archegonia of Selaginella are differentiated by:

 
 
 
 

140. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

142. Facultative saprophyte is:

 
 
 
 

143. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

145. Ethylene oxide is widely used to:

 
 
 
 

146. Indusium in Dryopteris is:

 
 
 
 

147. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

148. The young leaves of Cycas have :

 
 
 
 

149. Kuru, a human disease is caused by:

 
 
 
 

150. Vascular cryptogams is the term used for:

 
 
 
 

151. The largest alga is:

 
 
 
 

152. Viruses are commonly transmitted in plants through:

 
 
 
 

153. Lichen show :

 
 
 
 

154. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

157. Downy mildew disease is caused by :

 
 
 
 

158. The source of litmus is :

 
 
 
 

159. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. Embryophyta includes :

 
 
 
 

171. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

172. Total parasites belong to:

 
 
 
 

173. Yeast is a source of:

 
 
 
 

174. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

176. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

179. Tautonyms are illegitimate in:

 
 
 
 

180. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

182. Pythium debaryanum is the causative agent of:

 
 
 
 

183. Clostridium can:

 
 
 
 

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

 
 
 
 

185. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

187. All protozoans possess:

 
 
 
 

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

 
 
 
 

189. Azolla and Salvinia both are:

 
 
 
 

190. The gametophyte produced by apospory is :

 
 
 
 

191. Woody climbers are known as :

 
 
 
 

192. Fruits are not found in:

 
 
 
 

193. In moss, calyptra is formed from:

 
 
 
 

194. Smallpox is caused by:

 
 
 
 

195. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

198. Water-net is the name of:

 
 
 
 

199. Which of the following shows heterotrichous habit?

 
 
 
 

200. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

202. Absorptive nutrition is:

 
 
 
 

203. The gametophyte of moss has distinct phases :

 
 
 
 

204. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

206. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

208. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

210. Saccharomyces is well known for:

 
 
 
 

211. Standard size of a herbarium sheet is:

 
 
 
 

212. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

214. What is a vector?

 
 
 
 

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

 
 
 
 

216. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. The coralloid roots are :

 
 
 
 

220. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Discovery of penicillin was based on:

 
 
 
 

230. Anoxygenic photosynthesis occurs in:

 
 
 
 

231. Banana bunchy top is caused by :

 
 
 
 

232. Bryophyta have a special character from other plants:

 
 
 
 

233. The central part of Funaria axis is :

 
 
 
 

234. The prothallus of fern is:

 
 
 
 

235. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

241. The archegonia in Selaginella develop on:

 
 
 
 

242. 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:

 
 
 
 

243. The phloem of vascular system of Cycas is :

 
 
 
 

244. The sexual reproductive organs in Rhizopus are:

 
 
 
 

245. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

247. Nannandria are:

 
 
 
 

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

 
 
 
 

249. Among the algae kelps are :

 
 
 
 

250. Rhizoids of Riccia are :

 
 
 
 

251. Circular DNA is seen in:

 
 
 
 

252. The group algae possesses representatives belonging to kingdom:

 
 
 
 

253. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

255. Psilotum is:

 
 
 
 

256. Pteridophytes are also known as :

 
 
 
 

257. Ginkgo biloba is a:

 
 
 
 

258. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

260. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

262. Most common type of conjugation in Spirogyra is :

 
 
 
 

263. The alga, Spirogyra are found in :

 
 
 
 

264. Lichens are pioneers of vegetation in a :

 
 
 
 

265. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

270. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. Ergot of rye is caused by:

 
 
 
 

274. Selaginella differs from Moss in having:

 
 
 
 

275. Centric discoid form of diatom is:

 
 
 
 

276. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

278. The mycelium of Rhizopus is:

 
 
 
 

279. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

281. Pythium debaryanum is the causative agent of:

 
 
 
 

282. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. Which of the following lichens is harmful?

 
 
 
 

288. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Zoogametes are not found in:

 
 
 
 

292. Germ theory of disease was proposed by:

 
 
 
 

293. To which country Antony van Leeuwenhoek belong?

 
 
 
 

294. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

296. Which organisms are the oldest life forms?

 
 
 
 

297. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

299. Which of the following is sago palm?

 
 
 
 

300. In dinoflagellates, the two flagella are:

 
 
 
 

301. In a bacteriophage, DNA is present in:

 
 
 
 

302. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

304. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

309. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

311. Ovary is absent in :

 
 
 
 

312. Cycas is similar to a mustard plant :

 
 
 
 

313. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. The role of meiosis is for:

 
 
 
 

318. 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:

 
 
 
 

319. The leaves of Funaria are :

 
 
 
 

320. The lambda phase is a:

 
 
 
 

321. Rhizophore of Selaginella is:

 
 
 
 

322. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

324. In Pteris, the archegonia are present:

 
 
 
 

325. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

331. Acellular slime mold is/are:

 
 
 
 

332. 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?

 
 
 
 

333. Which of the following are included in Tracheophyta?

 
 
 
 

334. Spores of which plants have chloroplast:

 
 
 
 

335. Longest known virus is:

 
 
 
 

336. The chromosomal number in:

 
 
 
 

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

 
 
 
 

338. In Selaginella, the microsporangia are:

 
 
 
 

339. The genetic material of poxvirus is:

 
 
 
 

340. Endemic plants are characterised by their:

 
 
 
 

341. Which of the following is a heterosporous pteridophyte?

 
 
 
 

342. Maximum diversity of life forms occurs in :

 
 
 
 

343. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. The two conjugating gametangia of Rhizopus are:

 
 
 
 

347. In Cycas microsporangia are borne on:

 
 
 
 

348. Cryptogams include :

 
 
 
 

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

 
 
 
 

350. Pollination in Cycas takes place by :

 
 
 
 

351. 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:

 
 
 
 

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

 
 
 
 

353. The most primitive vascular plants is:

 
 
 
 

354. Penicillin was discovered by:

 
 
 
 

355. . Tapetum develops in:

 
 
 
 

356. Synzoospore is produced in:

 
 
 
 

357. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

359. Cycas plant in appearance resembles :

 
 
 
 

360. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

362. Water-borne bacterial diseases are:

 
 
 
 

363. Methanogens belong to:

 
 
 
 

364. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

366. Pinus microsporophyll bears:

 
 
 
 

367. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

369. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

375. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

384. An Hfr bacterium is one that contains:

 
 
 
 

385. Ovary is absent in:

 
 
 
 

386. LSD is:

 
 
 
 

387. Cycas is :

 
 
 
 

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

 
 
 
 

389. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

391. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

393. Spirogyra differs from moss protonema in having :

 
 
 
 

394. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Which among the following is a shrub?

 
 
 
 

398. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

401. In moss, sporogenous tissue arises from:

 
 
 
 

402. The order generally ends with:

 
 
 
 

403. The leaves of Funaria are :

 
 
 
 

404. Which of the following are absent in Mycoplasma?

 
 
 
 

405. One of the distinctive feature of Spirogyra is :

 
 
 
 

406. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

408. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

410. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Iodine is obtained from:

 
 
 
 

414. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

417. Pollination drop is:

 
 
 
 

418. The leaf of Cycas shows:

 
 
 
 

419. Rice, pea, potato are :

 
 
 
 

420. The stele of Dryopteris is a:

 
 
 
 

421. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. In binomial system most of the words are:

 
 
 
 

425. Triple antigen injection or vaccine are for:

 
 
 
 

426. Most primitive embryophytes are placed in :

 
 
 
 

427. The roots of Cycas are :

 
 
 
 

428. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

431. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

433. In moss, sporophyte is formed on:

 
 
 
 

434. The smallest unit of classification is:

 
 
 
 

435. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

437. The first to isolate a plant virus was:

 
 
 
 

438. Which of the following have a prokaryotic cell?

 
 
 
 

439. In Cycas:

 
 
 
 

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

 
 
 
 

441. The megaspore of Selaginella on germination produces:

 
 
 
 

442. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

445. In Gymnosperms endosperm is a:

 
 
 
 

446. Vascular cryptogam is the term used for :

 
 
 
 

447. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

448. 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?

 
 
 
 

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

 
 
 
 

450. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

452. Economic importance of bacteria lies in their being:

 
 
 
 

453. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

456. What is absent in Deuteromycetes?

 
 
 
 

457. Etiology includes the study of :

 
 
 
 

458. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Cleavage polyembryony is found in :

 
 
 
 

463. Most appropriate word for protozoans is:

 
 
 
 

464. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

470. The fungi are usually:

 
 
 
 

471. Where does meiosis occur in yeast?

 
 
 
 

472. Bacteria which are spherical are called:

 
 
 
 

473. The antibiotic is obtained from:

 
 
 
 

474. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

476. Funaria is :

 
 
 
 

477. Halophiles are the bacteria that require for growth:

 
 
 
 

478. Common phycobiont in a lichen is :

 
 
 
 

479. Green plants are classified as :

 
 
 
 

480. Citrus canker is caused by:

 
 
 
 

481. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

483. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

485. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

487. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. Red rot of sugarcane is caused by:

 
 
 
 

493.

494. The nucleus of bacteria is:

 
 
 
 

495. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

497. Vascular tissue is found in :

 
 
 
 

498. Multicellular and jacketed sex organs are found in :

 
 
 
 

499. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

501. Mycoplasma are sensitive to:

 
 
 
 

502. Club moss is the common name of :

 
 
 
 

503. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

505. In moss, peristomial teeth are:

 
 
 
 

506. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Streptomycin is obtained from:

 
 
 
 

515. Protozoans are considered animals because these are:

 
 
 
 

516. Reserve food in Euglena is:

 
 
 
 

517. The smallest bacterium is:

 
 
 
 

518. Which is not true for Escherichia coli?

 
 
 
 

519. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

524. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

528. Virus and bacteriophage are made-up of:

 
 
 
 

529. Broad spectrum antibiotic is, which:

 
 
 
 

530. Chemosynthetic bacteria are:

 
 
 
 

531. Photosynthetic protists belong to:

 
 
 
 

532. Seeds are characteristically found in :

 
 
 
 

533. Black rust of wheat is caused by:

 
 
 
 

534. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. Virion refers to:

 
 
 
 

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

 
 
 
 

540. Metulae are found in:

 
 
 
 

541. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

543. Which lichen is called Reindeer moss?

 
 
 
 

544. The megasporangium of Selaginella is:

 
 
 
 

545. Ovules are not found enclosed in ovary of:

 
 
 
 

546. Bivalved siliceous shell or frustule occur in:

 
 
 
 

547. Milk is converted to curd by:

 
 
 
 

548. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

550. Lichens reproduce by :

 
 
 
 

551. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

555. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

560. Which of the following are included in Tracheophyta?

 
 
 
 

561. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. 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:

 
 
 
 

565. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Green plants are classified as:

 
 
 
 

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

 
 
 
 

578. Photoautotrophic bacteria have:

 
 
 
 

579. In tracheophyta:

 
 
 
 

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

 
 
 
 

581. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Enzymes are absent in:

 
 
 
 

586. The sori in Dryopteris are found on:

 
 
 
 

587. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

589. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

594. Select the wrong statement:

 
 
 
 

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

 
 
 
 

596. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. The gametophyte of fern is as:

 
 
 
 

600. Bacteria are found everywhere, except:

 
 
 
 

601. Heterosporous pteridophytes always form:

 
 
 
 

602. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

604. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

609. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

611. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

612. Red rot of sugarcane is caused by :

 
 
 
 

613. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Which is absent from the xylem of Cycas?

 
 
 
 

617. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

619. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

621. The chief characteristic of class Ascomycetes is:

 
 
 
 

622. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

624. E coli is a:

 
 
 
 

625. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

626. Mucilaginous canals in Cycas are found in :

 
 
 
 

627. The antherozoids of Funaria are :

 
 
 
 

628. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. Little leaf disease of Brinjal is caused by:

 
 
 
 

633. Which is a tautonym?

 
 
 
 

634.

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

 
 
 
 

636. How a fern differs from a moss?

 
 
 
 

637. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. Which fixes atmospheric nitrogen?

 
 
 
 

644. Gram stain is used to:

 
 
 
 

645. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

647. The leafy fern plant represents the:

 
 
 
 

648. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

650. What is special feature of fern archegonia?

 
 
 
 

651. The similarity between cyanobacteria and bacteria:

 
 
 
 

652. Which is an exception to cell theory?

 
 
 
 

653. The Rhizopus gametes are formed in:

 
 
 
 

654. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. Most primitive kind of flower is represented by:

 
 
 
 

658. Redness of red sea is due to :

 
 
 
 

659. Cyathia is characterized by:

 
 
 
 

660. Pasteurized milk is:

 
 
 
 

661. Acetobacter is useful in:

 
 
 
 

662. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

664. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

666. Chief constituents of bordeaux mixture are :

 
 
 
 

667. Polystelic condition is found in:

 
 
 
 

668. Some bacteria cannot be killed easily because of:

 
 
 
 

669. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

671. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

673. The tallest moss in the world is :

 
 
 
 

674. The spermatozoids of Cycas are :

 
 
 
 

675. Most of the algae are :

 
 
 
 

676. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

678. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

680. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

686. The most important property of yeast is:

 
 
 
 

687. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

689. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

694. Bacteria differ from viruses in being sensitive to:

 
 
 
 

695. Bacteria growing on synthetic medium are called:

 
 
 
 

696. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

698. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

700. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

702. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

703. Fern phloem lacks:

 
 
 
 

704. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

706. Botulism is a:

 
 
 
 

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

 
 
 
 

708. Why is Cycas called a living fossil?

 
 
 
 

709. Most primitive embryophytes are placed in:

 
 
 
 

710. Botulinum toxin effects:

 
 
 
 

711. The chloroplast in Ulothrix is :

 
 
 
 

712. Plasmids are:

 
 
 
 

713. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Ulothrix produces :

 
 
 
 

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

 
 
 
 

718. Nitrogen-fixing bacteria may be located:

 
 
 
 

719. The flagella of Chlamydomonas are:

 
 
 
 

720. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

722. Majority of lichens are :

 
 
 
 

723. Who named prion?

 
 
 
 

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

 
 
 
 

725. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

726. Viruses have:

 
 
 
 

727. Mycoplasmas are not viruses in nature because:

 
 
 
 

728. The sporophyte of Riccia is :

 
 
 
 

729. Spirogyra represents the :

 
 
 
 

730. TMV was isolated in crystalline form by:

 
 
 
 

731. The Rhizopus is:

 
 
 
 

732. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

734. Interferon is a:

 
 
 
 

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

 
 
 
 

736. The development of Selaginella embryo is:

 
 
 
 

737. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Liverworts are included in :

 
 
 
 

741. Lichens are ecologically important because :

 
 
 
 

742. How is moss different from fern?

 
 
 
 

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

 
 
 
 

744. Parmelia belongs to :

 
 
 
 

745. Most primitive group of vascular plants are:

 
 
 
 

746. In moss, stomata are found:

 
 
 
 

747. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

749. The photosynthetic protists are:

 
 
 
 

750. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

753. Cellular slime mold is:

 
 
 
 

754. Amoeba is a member of the phylum:

 
 
 
 

755. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

757. Red rot of sugarcane is caused by :

 
 
 
 

758. Male gametes in Dryopteris are:

 
 
 
 

759. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

764. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

766. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

768. Antibiotics cure the disease by:

 
 
 
 

769. Fern prothallus is:

 
 
 
 

770. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

772. Each chloroplast in Spirogyra bears :

 
 
 
 

773. Ovules are not found enclosed in ovary in :

 
 
 
 

774. Genetic material of TMV is:

 
 
 
 

775. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

779. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

781. Coenogamete is found in:

 
 
 
 

782. Bacteriophages have been used as:

 
 
 
 

783. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

785. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

787. 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?

 
 
 
 

788. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

790. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. Some biologists have used the term Mycetozoa for:

 
 
 
 

794. Which group of algae have an incipient nucleus?

 
 
 
 

795. Which have the largest antherozoid?

 
 
 
 

796. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

798. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

800. Vegetative reproduction in Cycas is by means of :

 
 
 
 

801. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

803. Which condition is found in Cycas?

 
 
 
 

804. What is mycorrhiza?

 
 
 
 

805. Black rust of wheat is caused by:

 
 
 
 

806. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Disease resistant plant varieties can be produced by :

 
 
 
 

812. The tree fern is:

 
 
 
 

813. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. What are plasmids?

 
 
 
 

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

 
 
 
 

818. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

820. Leprosy is caused by:

 
 
 
 

821. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

822. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

827. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

829. Cap cells are found in the filament of:

 
 
 
 

830. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

832. The fungi used as food are:

 
 
 
 

833. Late blight of potato is caused by:

 
 
 
 

834. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

837. Usually, bacteria reproduce by:

 
 
 
 

838.

 

839. Sexual reproduction in Rhizopus is by:

 
 
 
 

840. A gill of Agaricus:

 
 
 
 

841. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

844. The term stele was given by:

 
 
 
 

845. Pinus gerardiana is :

 
 
 
 

846. Placenta in fern is:

 
 
 
 

847. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

852. Aflatoxin is produced by:

 
 
 
 

853. Fruits are not found in :

 
 
 
 

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

 
 
 
 

855. Which of the following is true for Selaginella?

 
 
 
 

856. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

858. Cycas is different from mango in :

 
 
 
 

859. John Hutchinson divided dicots into two divisions:

 
 
 
 

860. What are Cyanobacteria?

 
 
 
 

861. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

863. Antibiotic has been extracted from :

 
 
 
 

864. Bacteria are considered to be plants because they: