Quiz_Random

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

 
 
 
 

2. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

3. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

5. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. The root nodules of leguminous plants contain:

 
 
 
 

9. The Rhizopus is:

 
 
 
 

10. In moss, sporogenous tissue arises from:

 
 
 
 

11. Embryophyta includes :

 
 
 
 

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

 
 
 
 

13. Ethylene oxide is widely used to:

 
 
 
 

14. Anoxygenic photosynthesis occurs in:

 
 
 
 

15. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

17. Woody climbers are known as :

 
 
 
 

18. Most common type of conjugation in Spirogyra is :

 
 
 
 

19. Leaf spot of groundnut is caused by :

 
 
 
 

20. Ergot is obtained from :

 
 
 
 

21. Oswald Tippo’s classification was based on :

 
 
 
 

22. Green plants are classified as :

 
 
 
 

23. Ovules are not found enclosed in ovary in :

 
 
 
 

24. Photosynthetic bacteria have:

 
 
 
 

25. Viroids have:

 
 
 
 

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

 
 
 
 

27. Infective part of virus was discovered by:

 
 
 
 

28. The word “sea weeds” is used for:

 
 
 
 

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

 
 
 
 

30. Black rust of wheat is caused by:

 
 
 
 

31. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Indusium in Dryopteris is:

 
 
 
 

38. Detailed study of bacteriophage was made by:

 
 
 
 

39. Which one of the following is a monocot?

 
 
 
 

40. Bryophyta have been placed in cryptogams because:

 
 
 
 

41. The spermatozoids of Cycas are :

 
 
 
 

42. Pinus gerardiana is :

 
 
 
 

43. Helotism word is used for the symbiosis between :

 
 
 
 

44. An alga which is rich in proteins:

 
 
 
 

45. Fruiting body of lichens is :

 
 
 
 

46. The mycelium of Rhizopus is:

 
 
 
 

47. What are Cyanobacteria?

 
 
 
 

48. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Saccharomyces ludwigii ascus produces:

 
 
 
 

52. Discovery of penicillin was based on:

 
 
 
 

53. Methanogens belong to:

 
 
 
 

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

 
 
 
 

55. Which one of the following statement is wrong?

 
 
 
 

56. Majority of lichens are :

 
 
 
 

57. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Red rot of sugarcane is caused by :

 
 
 
 

61. What is mycorrhiza?

 
 
 
 

62. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

64. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

66. Cyathia is characterized by:

 
 
 
 

67. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

69. How is moss different from fern?

 
 
 
 

70. Gymnosperms could also be called as:

 
 
 
 

71. Maximum diversity of life forms occurs in :

 
 
 
 

72. The largest known bacterium is:

 
 
 
 

73. Which is not found in bacteria?

 
 
 
 

74. Bacteriophages have been used as:

 
 
 
 

75. To which country Antony van Leeuwenhoek belong?

 
 
 
 

76. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

81. The similarity between cyanobacteria and bacteria:

 
 
 
 

82. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

84. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

86. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Azolla and Salvinia both are:

 
 
 
 

97. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

99. 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:

 
 
 
 

100. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

105. Number of capsomeres forming capsid of TMV is:

 
 
 
 

106. 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?

 
 
 
 

107. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

109. A gill of Agaricus:

 
 
 
 

110. The sporangiophores in Rhizopus are:

 
 
 
 

111. The gametophyte produced by apospory is :

 
 
 
 

112. Lichens reproduce by :

 
 
 
 

113. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

125. In moss, sporophyte is formed on:

 
 
 
 

126. The Rhizopus gametes are formed in:

 
 
 
 

127. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

129. Which of the following is a parasitic algae?

 
 
 
 

130. Rhizophore of Selaginella is:

 
 
 
 

131. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

133. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

135. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Ovary is absent in :

 
 
 
 

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

 
 
 
 

140. Bryophyta have a special character from other plants:

 
 
 
 

141. Fern prothallus produces:

 
 
 
 

142. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. The seedless plants which possess vascular tissues are:

 
 
 
 

147. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. Virion refers to:

 
 
 
 

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

 
 
 
 

158. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

160. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

163. The disease symptom necrosis refers to :

 
 
 
 

164. Which is a tautonym?

 
 
 
 

165. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

169. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

171. Synzoospore is produced in:

 
 
 
 

172. Cycas plant in appearance resembles :

 
 
 
 

173. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

174. Cycas is:

 
 
 
 

175. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. Fruits are not found in Cycas because:

 
 
 
 

179. Fruits are not found in :

 
 
 
 

180. Where does meiosis occur in yeast?

 
 
 
 

181. Citrus canker is caused by :

 
 
 
 

182. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. Which fixes atmospheric nitrogen?

 
 
 
 

186. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

189. Select the correct statement: (NEET 2016)

 
 
 
 

190. The largest alga is:

 
 
 
 

191. Which of the following is true for Selaginella?

 
 
 
 

192. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

194. Polystelic condition is found in:

 
 
 
 

195. Mixed cropping helps :

 
 
 
 

196. The source of litmus is :

 
 
 
 

197. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

198. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

199. Which is the correct statement about Selaginella?

 
 
 
 

200. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

202. Which of the following shows heterotrichous habit?

 
 
 
 

203. Funaria is a Bryophyta because :

 
 
 
 

204. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

206. Small epidermal swellings due to infection are called :

 
 
 
 

207. Lichens show :

 
 
 
 

208. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

210. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. Club moss and Peat moss belong to:

 
 
 
 

215. Water bloom is generally caused by :

 
 
 
 

216. In angiosperms double fertilization represents:

 
 
 
 

217. Diploxylic vascular bundles are found in:

 
 
 
 

218. The antibiotic is obtained from:

 
 
 
 

219. Yeast grows more rapidly in:

 
 
 
 

220. Liverworts are included in :

 
 
 
 

221. The first to isolate a plant virus was:

 
 
 
 

222. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

223. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. In Cycas:

 
 
 
 

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

 
 
 
 

228. Some diseases caused by bacteria are:

 
 
 
 

229. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

231. Banana bunchy top is caused by :

 
 
 
 

232. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

234. Centric discoid form of diatom is:

 
 
 
 

235. Acetobacter is useful in:

 
 
 
 

236. Lichens reproduce by :

 
 
 
 

237. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Vascular cryptogam is the term used for :

 
 
 
 

249. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

251. Red rot of sugarcane is caused by:

 
 
 
 

252. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. Which of the following lichens is harmful?

 
 
 
 

256. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. Cocci types of bacteria are:

 
 
 
 

261. The alga, Spirogyra are found in :

 
 
 
 

262. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

268. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Pinus microsporophyll bears:

 
 
 
 

275. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

277. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

279. What is the role of nitrifying bacteria?

 
 
 
 

280. Pythium debaryanum is the causative agent of:

 
 
 
 

281. Ginkgo biloba is a:

 
 
 
 

282. Aflatoxin is produced by:

 
 
 
 

283. The fungi used as food are:

 
 
 
 

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

 
 
 
 

285. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

288. Which is a redwood tree?

 
 
 
 

289. Who discovered streptomycin?

 
 
 
 

290. The development of Selaginella embryo is:

 
 
 
 

291. Male gametes in Dryopteris are:

 
 
 
 

292. Photoautotrophic bacteria have:

 
 
 
 

293. The smallest unit of classification is:

 
 
 
 

294. Protozoans are considered animals because these are:

 
 
 
 

295. Bentham and Hooker placed gymnosperms:

 
 
 
 

296. The sporophyte of Riccia is :

 
 
 
 

297. All algae have:

 
 
 
 

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

 
 
 
 

299. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Which is an exception to cell theory?

 
 
 
 

306. Diphtheria is caused by:

 
 
 
 

307. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

308. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

310. Isomorphic type alternation of generation is found in:

 
 
 
 

311. Most resistant spore in bacteria is:

 
 
 
 

312. Water-borne bacterial diseases are:

 
 
 
 

313. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

315. Male gametophyte of Selaginella is found:

 
 
 
 

316. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

323. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. The lichens growing on rocks are called :

 
 
 
 

328. TMV was isolated in crystalline form by:

 
 
 
 

329. Sporophyte of Funaria is :

 
 
 
 

330. Most appropriate word for protozoans is:

 
 
 
 

331. Broad spectrum antibiotic is, which:

 
 
 
 

332. Which of the following is sago palm?

 
 
 
 

333. 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:

 
 
 
 

334. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

336. The chief characteristic of class Ascomycetes is:

 
 
 
 

337. Funaria is :

 
 
 
 

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

 
 
 
 

339. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

341. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

343. Ulothrix produces :

 
 
 
 

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

 
 
 
 

345. The sporangium of fern contains nearly:

 
 
 
 

346. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. Longest known virus is:

 
 
 
 

353. The antherozoids of Funaria are :

 
 
 
 

354. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. Which class of Protozoa includes all parasitic forms?

 
 
 
 

360. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

363. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

365. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

367. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

369. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

371. Mucilaginous canals in Cycas are found in :

 
 
 
 

372. The vascular bundles of Cycas stem are :

 
 
 
 

373. Which of the following is a monocot?

 
 
 
 

374. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

376. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

381. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

383. Who discovered cyanophages?

 
 
 
 

384. The group algae possesses representatives belonging to kingdom:

 
 
 
 

385. In Funaria :

 
 
 
 

386. Water-net is the name of:

 
 
 
 

387. White rust of crucifers is caused by:

 
 
 
 

388. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

390. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

392. Plasmids are:

 
 
 
 

393. Antibiotic has been extracted from :

 
 
 
 

394. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Saccharomyces is used in:

 
 
 
 

398. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. Funaria are commonly found :

 
 
 
 

403. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

405. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. In Gymnocarpeae the fruiting body is :

 
 
 
 

410. Heterospory and ligulate leaves are a feature of:

 
 
 
 

411. Gametophyte is the main plant body in :

 
 
 
 

412. Kuru, a human disease is caused by:

 
 
 
 

413. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. Embryophyta includes:

 
 
 
 

417. Quarantine regulations are concerned with:

 
 
 
 

418. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

420. Virus and bacteriophage are made-up of:

 
 
 
 

421. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. Cap cells are found in the filament of:

 
 
 
 

425. Why is Cycas called a living fossil?

 
 
 
 

426. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

428. The archegonia of Selaginella are differentiated by:

 
 
 
 

429. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

430. The prothallus of fern is:

 
 
 
 

431. The roots of Cycas are :

 
 
 
 

432. In Funaria, calyptra is derived from :

 
 
 
 

433. Facultative saprophyte is:

 
 
 
 

434. Pteridophytes are also known as :

 
 
 
 

435. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

437. In moss, stomata are found:

 
 
 
 

438. In moss, calyptra is formed from:

 
 
 
 

439. Protistan algae obtain their food as:

 
 
 
 

440. The order generally ends with:

 
 
 
 

441. Which of the following are absent in Mycoplasma?

 
 
 
 

442. Vascular tissue is found in :

 
 
 
 

443. Streptomycin is obtained from:

 
 
 
 

444. Select the wrong statement:

 
 
 
 

445. The chloroplast in Ulothrix is :

 
 
 
 

446. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

448. Nannandria are:

 
 
 
 

449. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

450.

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

 
 
 
 

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

 
 
 
 

453. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

455. Cycas is similar to a mustard plant :

 
 
 
 

456. The chromosomal number in:

 
 
 
 

457. What is a vector?

 
 
 
 

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

 
 
 
 

459. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

461. Pythium debaryanum is the causative agent of:

 
 
 
 

462. Downy mildew disease is caused by :

 
 
 
 

463. Germ theory of disease was proposed by:

 
 
 
 

464. E coli is a:

 
 
 
 

465. Agar-agar is obtained from:

 
 
 
 

466. The megasporangium of Selaginella is:

 
 
 
 

467. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. 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:

 
 
 
 

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

 
 
 
 

472. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

482. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

484. Which lichen is called Reindeer moss?

 
 
 
 

485. The sori in Dryopteris are found on:

 
 
 
 

486. Some bacteria cannot be killed easily because of:

 
 
 
 

487. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

494. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

495. 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:

 
 
 
 

496. The fungi that grow on wood are called:

 
 
 
 

497. Yeast belongs to class:

 
 
 
 

498. Who named prion?

 
 
 
 

499. The young leaves of Cycas have :

 
 
 
 

500. Seeds are characteristically found in:

 
 
 
 

501. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

503. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Pinus is:

 
 
 
 

507. Interferon is a:

 
 
 
 

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

 
 
 
 

509. Placenta in fern is:

 
 
 
 

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

 
 
 
 

511. Which have the largest antherozoid?

 
 
 
 

512. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

515. Pasteur is famous for his:

 
 
 
 

516. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

518. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

520. Sometimes the bacterial cell is enclosed in:

 
 
 
 

521. Funaria can be differentiated from Cycas :

 
 
 
 

522. Fertility of the soil is increased by:

 
 
 
 

523. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

528. The lambda phase is a:

 
 
 
 

529. The development of sporangium in Selaginella is:

 
 
 
 

530. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

532. Nitrogen-fixing bacteria may be located:

 
 
 
 

533. LSD is:

 
 
 
 

534. 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?

 
 
 
 

535.

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

 
 
 
 

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

 
 
 
 

538. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. Gram stain is used to:

 
 
 
 

542. Who discovered heterothallism in fungi?

 
 
 
 

543. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. First animal pathogenic virus was discovered by:

 
 
 
 

547. Most of the lichens are composed of :

 
 
 
 

548. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

553. Aflatoxin is produced as a product in :

 
 
 
 

554. The phloem of vascular system of Cycas is :

 
 
 
 

555. Iodine is obtained from :

 
 
 
 

556. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

563. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

569. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

577. Which of the following is true for viruses?

 
 
 
 

578. The plants of Funaria grow :

 
 
 
 

579. Amoeba is a member of the phylum:

 
 
 
 

580. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

582. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

584. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. Bacteria growing on synthetic medium are called:

 
 
 
 

588. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Choose the correct statement about Spirogyra:

 
 
 
 

596. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

598. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

600. Viruses have:

 
 
 
 

601. All protozoans possess:

 
 
 
 

602. The leaves of Funaria are :

 
 
 
 

603. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

605. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. Metulae are found in:

 
 
 
 

609.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

620. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

622. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

630. Simple polyembryony is found in :

 
 
 
 

631. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

633. Red rot of sugarcane is caused by :

 
 
 
 

634. Green plants are classified as:

 
 
 
 

635. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

637. Late blight of potato is caused by:

 
 
 
 

638. The zoospores of Ulothrix are :

 
 
 
 

639. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

641. Pasteurized milk is:

 
 
 
 

642. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

644. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

646. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

648. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

650. Meiosis in Ulothrix takes place:

 
 
 
 

651. Which of the following applies to Selaginella?

 
 
 
 

652. Bacteria which are spherical are called:

 
 
 
 

653. The male gametes of Pinus are :

 
 
 
 

654. The tree fern is:

 
 
 
 

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

 
 
 
 

656. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

658. Usually, bacteria reproduce by:

 
 
 
 

659. Leprosy is caused by:

 
 
 
 

660. Which causes red tide?

 
 
 
 

661. Pasteurization of milk involves heating for:

 
 
 
 

662. In Selaginella, the microsporangia are:

 
 
 
 

663. The genetic material of poxvirus is:

 
 
 
 

664. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

666. Asexual reproductive body of Volvox is called:

 
 
 
 

667. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

668. The leafy fern plant represents the:

 
 
 
 

669. Who among the following discovered virus?

 
 
 
 

670. Standard size of a herbarium sheet is:

 
 
 
 

671. Which of the following are included in Tracheophyta?

 
 
 
 

672. The fungi are mostly:

 
 
 
 

673. Which of the following have algal zone?

 
 
 
 

674. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

679. Zoogametes are not found in:

 
 
 
 

680. One of the distinctive feature of Spirogyra is :

 
 
 
 

681. Disease resistant plant varieties can be produced by :

 
 
 
 

682. What is absent in Deuteromycetes?

 
 
 
 

683. The teeth of peristome of Funaria are :

 
 
 
 

684. Azolla growing in paddy fields helps in:

 
 
 
 

685. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. . Tapetum develops in:

 
 
 
 

689. Mycoplasma are sensitive to:

 
 
 
 

690. In tracheophyta:

 
 
 
 

691. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

693. Sexual reproduction of lichen is due to :

 
 
 
 

694. The fern plant is:

 
 
 
 

695. Genetic material of TMV is:

 
 
 
 

696. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. In Cycas microsporangia are borne on:

 
 
 
 

700. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. 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?

 
 
 
 

704. Roots are absent in :

 
 
 
 

705. The ferns are usually found:

 
 
 
 

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

 
 
 
 

707. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. The sporophyte of Riccia is represented by :

 
 
 
 

711. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

713. Multicellular and jacketed sex organs are found in :

 
 
 
 

714. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

716. Typhoid in man is caused by:

 
 
 
 

717. The orders generally have the uniform endings:

 
 
 
 

718. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

719. The sporangia of Selaginella are attached:

 
 
 
 

720. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

722. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

724. Soil fertility is lost by the activities of:

 
 
 
 

725. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

727. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Proembryo in Pinus is :

 
 
 
 

732. Bacteria are considered to be plants because they:

 
 
 
 

733. 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?

 
 
 
 

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

 
 
 
 

735. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

737. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Ergot of rye is caused by:

 
 
 
 

741. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

747. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

749. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

751. Funaria is :

 
 
 
 

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

 
 
 
 

753. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

755. In Herpes virus DNA is:

 
 
 
 

756. Cryptogams include :

 
 
 
 

757. Citrus canker is caused by:

 
 
 
 

758. Sleeping sickness disease in man is caused by:

 
 
 
 

759. Heterospory is the production of:

 
 
 
 

760. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

763. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

765. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

767. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

771. Meristele of fern is:

 
 
 
 

772. Spermatophyta are characterized by producing:

 
 
 
 

773. The microsporophylls on the cone of Cycas are :

 
 
 
 

774. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

775. Among the algae kelps are :

 
 
 
 

776. Little leaf disease of Brinjal is caused by:

 
 
 
 

777. Spirogyra represents the :

 
 
 
 

778. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. Yeast is a source of:

 
 
 
 

796. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

797. Mycoplasma are:

 
 
 
 

798.

 

799. Ovules are not found enclosed in ovary of:

 
 
 
 

800. Reserve food in Euglena is:

 
 
 
 

801. Clostridium can:

 
 
 
 

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

 
 
 
 

803. The two conjugating gametangia of Rhizopus are:

 
 
 
 

804. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

809. In a diplontic life cycle:

 
 
 
 

810. Lichens are ecologically important because :

 
 
 
 

811. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

818. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. Halophiles are the bacteria that require for growth:

 
 
 
 

824. Cycas is :

 
 
 
 

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

 
 
 
 

826. Rice, pea, potato are :

 
 
 
 

827. In moss, reduction division occurs in :

 
 
 
 

828. The tallest moss in the world is :

 
 
 
 

829. The term stele was given by:

 
 
 
 

830. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

832. Cleavage polyembryony is found in :

 
 
 
 

833. In moss, peristomial teeth are:

 
 
 
 

834. Which is a fungicide?

 
 
 
 

835. Most primitive embryophytes are placed in :

 
 
 
 

836. Generic name of mango is:

 
 
 
 

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

 
 
 
 

838. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

840. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

842. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

848. Lichens form the first community in

 
 
 
 

849. Which condition is found in Cycas?

 
 
 
 

850. The leaf of Cycas shows:

 
 
 
 

851. Psilotum is:

 
 
 
 

852. Chemosynthetic bacteria are:

 
 
 
 

853. 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:

 
 
 
 

854. Which statement is wrong in regard to bacteria?

 
 
 
 

855. 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:

 
 
 
 

856. Nitrifying bacteria play an important role by converting:

 
 
 
 

857. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. Club moss is the common name of :

 
 
 
 

861. Cycas revoluta is widely grown as :

 
 
 
 

862. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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