Quiz_Random

1. In Pteris, the archegonia are present:

 
 
 
 

2. Gram stain is used to:

 
 
 
 

3. Indusium in Dryopteris is:

 
 
 
 

4. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

6. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

12. Fruiting body of lichens is :

 
 
 
 

13. Bacteriophage consists of:

 
 
 
 

14. 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:

 
 
 
 

15. Redness of red sea is due to :

 
 
 
 

16. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. The similarity between cyanobacteria and bacteria:

 
 
 
 

20. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. The tallest moss in the world is :

 
 
 
 

24. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Who named prion?

 
 
 
 

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

 
 
 
 

32. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

34. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Saccharomyces is used in:

 
 
 
 

40. The two conjugating gametangia of Rhizopus are:

 
 
 
 

41. The lambda phase is a:

 
 
 
 

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

 
 
 
 

43. The genetic material of poxvirus is:

 
 
 
 

44. Interferon is a:

 
 
 
 

45. The role of meiosis is for:

 
 
 
 

46. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. The young leaves of Cycas have :

 
 
 
 

51. 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?

 
 
 
 

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

 
 
 
 

53. Embryophyta includes:

 
 
 
 

54. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

59. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

61. Water-borne bacterial diseases are:

 
 
 
 

62. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

64. Selaginella differs from Moss in having:

 
 
 
 

65. Who discovered heterothallism in fungi?

 
 
 
 

66. Pinus is:

 
 
 
 

67. Fruits are not found in:

 
 
 
 

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

 
 
 
 

69. Fruits are not found in :

 
 
 
 

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

 
 
 
 

71. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

76. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

77. Azolla and Salvinia both are:

 
 
 
 

78. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

80. Yeast is a source of:

 
 
 
 

81. Vascular cryptogams is the term used for:

 
 
 
 

82. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

84. Bacteriophages have been used as:

 
 
 
 

85. Which causes red tide?

 
 
 
 

86. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Streptomyces falls under:

 
 
 
 

90. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

92. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

94. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

95. Economic importance of bacteria lies in their being:

 
 
 
 

96. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

105. The flagella of Chlamydomonas are:

 
 
 
 

106. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

108. Bacteria were first discovered by:

 
 
 
 

109. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

111. Lichens show :

 
 
 
 

112. A gill of Agaricus:

 
 
 
 

113. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

115. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

122. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

124. Nitrifying bacteria play an important role by converting:

 
 
 
 

125. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

127. Roots are absent in :

 
 
 
 

128. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

130. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

136. Circular DNA is seen in:

 
 
 
 

137. Cyanophage is a virus that attacks:

 
 
 
 

138. Linnaeus is credited with introducing:

 
 
 
 

139. The smallest bacterium is:

 
 
 
 

140. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

141. Azolla growing in paddy fields helps in:

 
 
 
 

142. The sori in Dryopteris are found on:

 
 
 
 

143. Which condition is found in Cycas?

 
 
 
 

144. Botulism is a:

 
 
 
 

145. Sporophyte of Funaria is :

 
 
 
 

146. In angiosperms double fertilization represents:

 
 
 
 

147. Kuru, a human disease is caused by:

 
 
 
 

148. The chloroplast in Ulothrix is :

 
 
 
 

149. Special feature of pollen grains of Pinus is :

 
 
 
 

150. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

152. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

154. Which one of the following statement is wrong?

 
 
 
 

155. Aflatoxin is produced as a product in :

 
 
 
 

156. In Gymnocarpeae the fruiting body is :

 
 
 
 

157. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

159. Desired type of Cycas can be grown by:

 
 
 
 

160. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

162. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Lichens are indicators of :

 
 
 
 

166. In moss, stomata are found:

 
 
 
 

167. Cell walls of Gram-positive bacteria contain:

 
 
 
 

168. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

170. Among the algae kelps are :

 
 
 
 

171. Male gametophyte of Selaginella is found:

 
 
 
 

172. Ergot of rye is caused by:

 
 
 
 

173. The prothallus of fern is:

 
 
 
 

174. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Reproduction in Rhizopus is:

 
 
 
 

178. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

180. Pseudomycelium is found in:

 
 
 
 

181. Facultative parasite is:

 
 
 
 

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

 
 
 
 

183. Fern prothallus is:

 
 
 
 

184. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. Botulinum toxin effects:

 
 
 
 

189. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

191. Late blight of potato is caused by :

 
 
 
 

192. In moss, conducting tissue is made up of

 
 
 
 

193. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. The central part of Funaria axis is :

 
 
 
 

197. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

198. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

199. Most resistant spore in bacteria is:

 
 
 
 

200. Which is not true for Escherichia coli?

 
 
 
 

201. 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?

 
 
 
 

202. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Oswald Tippo’s classification is:

 
 
 
 

206. Aflatoxin is produced by:

 
 
 
 

207. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

209. Which of the following is a monocot?

 
 
 
 

210. The archegonia of Selaginella are differentiated by:

 
 
 
 

211. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

213. Which of the following does not contain chlorophyll?

 
 
 
 

214. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

216. In moss, sporogenous tissue arises from:

 
 
 
 

217. Funaria are commonly found :

 
 
 
 

218. Psilotum is:

 
 
 
 

219. Pythium debaryanum is the causative agent of:

 
 
 
 

220. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

226. Metulae are found in:

 
 
 
 

227.

 

228. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

229. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

231. 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:

 
 
 
 

232. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

234. Mycoplasma are:

 
 
 
 

235. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

237. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. Pollination drop is:

 
 
 
 

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

 
 
 
 

243. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

245. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

247. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

253. Heterosporous pteridophytes always form:

 
 
 
 

254. Number of capsomeres forming capsid of TMV is:

 
 
 
 

255. Most common type of conjugation in Spirogyra is :

 
 
 
 

256. Common phycobiont in a lichen is :

 
 
 
 

257. The gametophyte of fern is as:

 
 
 
 

258. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. Fern plants are:

 
 
 
 

264. How is moss different from fern?

 
 
 
 

265. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. The antibiotic is obtained from:

 
 
 
 

269. Downy mildew disease is caused by :

 
 
 
 

270. Soil fertility is lost by the activities of:

 
 
 
 

271. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Amoeba is a member of the phylum:

 
 
 
 

278. The fungi are usually:

 
 
 
 

279. NBG of Lucknow is now named as:

 
 
 
 

280. Mycoplasma contains:

 
 
 
 

281. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

288. The fungi that grow on wood are called:

 
 
 
 

289. Virion refers to:

 
 
 
 

290. In Cycas microsporangia are borne on:

 
 
 
 

291. Cleavage polyembryony is found in :

 
 
 
 

292. Germ theory of disease was proposed by:

 
 
 
 

293. What are plasmids?

 
 
 
 

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

 
 
 
 

295. The fern plant is:

 
 
 
 

296. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

298. Which is a fungicide?

 
 
 
 

299. Club moss and Peat moss belong to:

 
 
 
 

300. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

301. Liverworts are included in :

 
 
 
 

302. Pythium debaryanum is the causative agent of:

 
 
 
 

303. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

304. Which is an edible fungus?

 
 
 
 

305. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

307. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

309. An Hfr bacterium is one that contains:

 
 
 
 

310. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

317. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Select the wrong statement:

 
 
 
 

321. Viruses have:

 
 
 
 

322. Spirogyra represents the :

 
 
 
 

323. Total parasites belong to:

 
 
 
 

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

 
 
 
 

325. Ovules are not found enclosed in ovary in :

 
 
 
 

326. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Ulothrix produces :

 
 
 
 

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

 
 
 
 

331. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

334. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

336. The middle sterile part of capsule is called:

 
 
 
 

337. Pteridophyta are also called:

 
 
 
 

338. In Funaria :

 
 
 
 

339. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

341. The spermatozoids of Cycas are :

 
 
 
 

342. The photosynthetic protists are:

 
 
 
 

343. In dinoflagellates, the two flagella are:

 
 
 
 

344. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

346. Lichens are ecologically important because :

 
 
 
 

347. Early blight of potato is caused by:

 
 
 
 

348. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

350. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

352. 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?

 
 
 
 

353. Protozoans are considered animals because these are:

 
 
 
 

354. The alga, Spirogyra are found in :

 
 
 
 

355. Rhizoids of Riccia are :

 
 
 
 

356. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. Which is absent from the xylem of Cycas?

 
 
 
 

363. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. The most primitive vascular plants is:

 
 
 
 

371. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

372. Green plants are classified as :

 
 
 
 

373. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. Which of the following are absent in Mycoplasma?

 
 
 
 

377. Most appropriate word for protozoans is:

 
 
 
 

378. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

380. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

382. 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:

 
 
 
 

383. The development of Selaginella embryo is:

 
 
 
 

384. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. Reserve food in Euglena is:

 
 
 
 

389. Lichen show :

 
 
 
 

390. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

392. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

394. Most primitive group of vascular plants are:

 
 
 
 

395. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

400. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

402. The root nodules of leguminous plants contain:

 
 
 
 

403. Funaria is :

 
 
 
 

404. In Herpes virus DNA is:

 
 
 
 

405. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

407. Which of the following statements is not correct?

 
 
 
 

408. Oswald Tippo’s classification was based on :

 
 
 
 

409. Majority of lichens are :

 
 
 
 

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

 
 
 
 

411. Leprosy is caused by:

 
 
 
 

412. The chloroplast of Chlamydomonas are:

 
 
 
 

413. All algae have:

 
 
 
 

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

 
 
 
 

415. Polystelic condition is found in:

 
 
 
 

416. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

418. Spirogyra differs from moss protonema in having :

 
 
 
 

419. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. Generic name of mango is:

 
 
 
 

423. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

425. Lichens reproduce by :

 
 
 
 

426. The source of litmus is :

 
 
 
 

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

 
 
 
 

428. Diploxylic vascular bundles are found in:

 
 
 
 

429. Mucilaginous canals in Cycas are found in :

 
 
 
 

430. Climbers are found in genus:

 
 
 
 

431. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. 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:

 
 
 
 

436. Coenogamete is found in:

 
 
 
 

437. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

442. Select the wrong statement:

 
 
 
 

443. The seedless plants which possess vascular tissues are:

 
 
 
 

444. Spores of which plants have chloroplast:

 
 
 
 

445. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. LSD is:

 
 
 
 

451. Spermatophyta are characterized by producing:

 
 
 
 

452. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

455. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

457. Heterotrichous habit means :

 
 
 
 

458. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

460. Nannandria are:

 
 
 
 

461. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

464. Late blight of potato is caused by:

 
 
 
 

465. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

470. Cap cells are found in the filament of:

 
 
 
 

471. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

473. The order generally ends with:

 
 
 
 

474. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

478. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

480. Nitrogen-fixing bacteria may be located:

 
 
 
 

481. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

483. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. Fertility of the soil is increased by:

 
 
 
 

492. The ascus of yeast contains:

 
 
 
 

493.

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

 
 
 
 

495. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

497. To which country Antony van Leeuwenhoek belong?

 
 
 
 

498. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

500. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

507. The nucleus of bacteria is:

 
 
 
 

508. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

512. Which of the following have algal zone?

 
 
 
 

513. Discovery of penicillin was based on:

 
 
 
 

514. Which of the following is a parasitic algae?

 
 
 
 

515. The microsporophylls on the cone of Cycas are :

 
 
 
 

516. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

518.

519. Fern phloem lacks:

 
 
 
 

520. The term stele was given by:

 
 
 
 

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

 
 
 
 

522. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

524. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

528. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. The male gametes of Pinus are :

 
 
 
 

538. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

540. Ginkgo biloba is a:

 
 
 
 

541. In moss, peristomial teeth are:

 
 
 
 

542. Bacteria are placed under:

 
 
 
 

543. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

548. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

550. Enzymes are absent in:

 
 
 
 

551. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

553. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

559. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

561. Asexual reproductive body of Volvox is called:

 
 
 
 

562. Funaria is :

 
 
 
 

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

 
 
 
 

564. Funaria is a Bryophyta because :

 
 
 
 

565. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

570. All archaebacteria lack:

 
 
 
 

571. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

576. Which is a tautonym?

 
 
 
 

577. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

579. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

581. . Tapetum develops in:

 
 
 
 

582. Gametophyte is the main plant body in :

 
 
 
 

583. Embryophyta includes :

 
 
 
 

584. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

586. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Tautonyms are illegitimate in:

 
 
 
 

590. Fern prothallus produces:

 
 
 
 

591. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

593. First animal pathogenic virus was discovered by:

 
 
 
 

594. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

595. The megasporangium of Selaginella is:

 
 
 
 

596. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

601. Each chloroplast in Spirogyra bears :

 
 
 
 

602. Yeast belongs to class:

 
 
 
 

603. Heterospory and ligulate leaves are a feature of:

 
 
 
 

604. Centric discoid form of diatom is:

 
 
 
 

605. Which statement is wrong in regard to bacteria?

 
 
 
 

606. The stele of Dryopteris is a:

 
 
 
 

607. The most important property of yeast is:

 
 
 
 

608. The leafy fern plant represents the:

 
 
 
 

609. Spermatophyta are characterized by producing:

 
 
 
 

610. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

612. Where does meiosis occur in yeast?

 
 
 
 

613. The sexual reproductive organs in Rhizopus are:

 
 
 
 

614. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

616. Water-net is the name of:

 
 
 
 

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

 
 
 
 

618. Etiology includes the study of :

 
 
 
 

619. Which part of Riccia bears nurse cells?

 
 
 
 

620. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

622. Wine turns sour because of:

 
 
 
 

623. Parmelia belongs to :

 
 
 
 

624. The leaves of Funaria are :

 
 
 
 

625. Which of the following have a prokaryotic cell?

 
 
 
 

626. What is the role of nitrifying bacteria?

 
 
 
 

627. Streptomycin is obtained from:

 
 
 
 

628. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

630. Penicillin is obtained from:

 
 
 
 

631.

632. Pneumonia is caused by:

 
 
 
 

633. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. Heterospory is the production of:

 
 
 
 

637. Black rust of wheat is caused by:

 
 
 
 

638. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

640. E coli is a:

 
 
 
 

641. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

643. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

646. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. What are Cyanobacteria?

 
 
 
 

651. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

653. An alga which is rich in proteins:

 
 
 
 

654. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

659. Which is the nuclear material in bacteria?

 
 
 
 

660. The mycelium of Rhizopus is:

 
 
 
 

661. Red rot of sugarcane is caused by :

 
 
 
 

662. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

664. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

666. The chief characteristic of class Ascomycetes is:

 
 
 
 

667. Bryophyta have a special character from other plants:

 
 
 
 

668. How a fern differs from a moss?

 
 
 
 

669. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

671. Protistan algae obtain their food as:

 
 
 
 

672. John Hutchinson divided dicots into two divisions:

 
 
 
 

673. Which of the following is a heterosporous pteridophyte?

 
 
 
 

674. The DNA of E coli is:

 
 
 
 

675. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

677. Iodine is obtained from:

 
 
 
 

678. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

680. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

682. Placenta in fern is:

 
 
 
 

683. What is a vector?

 
 
 
 

684. Rhizopus and yeast are usually:

 
 
 
 

685. Pteridophytes are also known as :

 
 
 
 

686. Why is Cycas called a living fossil?

 
 
 
 

687. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

689. Clostridium can:

 
 
 
 

690. Green plants are classified as:

 
 
 
 

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

 
 
 
 

692. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. The mode of nutrition of bacteria is usually:

 
 
 
 

698. The megaspore of Selaginella on germination produces:

 
 
 
 

699. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

701. Sporophyte of fern is:

 
 
 
 

702. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

704. The chromosomal number in:

 
 
 
 

705. Most of the lichens are composed of :

 
 
 
 

706. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

711. Ectocarpus produces:

 
 
 
 

712. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. The antherozoids of Funaria are :

 
 
 
 

719. Winged pollen grains are found in :

 
 
 
 

720. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

722. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

726. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

728. Which lichen is called Reindeer moss?

 
 
 
 

729. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

731. The plants of Funaria grow :

 
 
 
 

732. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

734. True sexuality is not found in:

 
 
 
 

735. Cryptogams include :

 
 
 
 

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

 
 
 
 

737. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

739. The coralloid roots are :

 
 
 
 

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

 
 
 
 

741. What is absent in Deuteromycetes?

 
 
 
 

742. 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:

 
 
 
 

743. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Germination of the seed of Pinus is :

 
 
 
 

747. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

750. The largest alga is:

 
 
 
 

751. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

754. Meristele of fern is:

 
 
 
 

755. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

760. Lichens form the first community in

 
 
 
 

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

 
 
 
 

762. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

764. In tracheophyta:

 
 
 
 

765. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

767. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

772. Facultative saprophyte is:

 
 
 
 

773. The truncated cone of HIV consists of:

 
 
 
 

774. Red rot of sugarcane is caused by :

 
 
 
 

775. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. Chemosynthetic bacteria are:

 
 
 
 

780. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. The fungi are mostly:

 
 
 
 

784. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

785. Methanogens belong to:

 
 
 
 

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

 
 
 
 

787. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

789. Enteric bacteria are those bacteria that live:

 
 
 
 

790. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Which one of the following is a monocot?

 
 
 
 

795. The disease apple scab is caused by:

 
 
 
 

796. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

798. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

800. In Funaria, calyptra is derived from :

 
 
 
 

801. The tree fern is:

 
 
 
 

802. Absorptive nutrition is:

 
 
 
 

803. Sexual reproduction in Rhizopus is by:

 
 
 
 

804. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

805. In Cycas the fertilization is:

 
 
 
 

806. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

809. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Ovary is absent in:

 
 
 
 

813. Fairy ring is the name given to:

 
 
 
 

814. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

816. Which of the following is true for Selaginella?

 
 
 
 

817. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

822. Leaf spot of groundnut is caused by :

 
 
 
 

823. Multicellular and jacketed sex organs are found in :

 
 
 
 

824. The sporangiophores in Rhizopus are:

 
 
 
 

825. Penicillin was discovered by:

 
 
 
 

826. Mycoplasmas are not viruses in nature because:

 
 
 
 

827. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

832. Rhizophore of Selaginella is:

 
 
 
 

833. Longest known virus is:

 
 
 
 

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

 
 
 
 

835. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

837. Bacteria growing on synthetic medium are called:

 
 
 
 

838. The Rhizopus is:

 
 
 
 

839. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

840. Antibiotics cure the disease by:

 
 
 
 

841. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. Plasmids are:

 
 
 
 

847. Ergot is obtained from :

 
 
 
 

848. The sporophyte of Riccia is :

 
 
 
 

849. Which bacteria convert nitrate into nitrogen?

 
 
 
 

850. Cycas is :

 
 
 
 

851. The ferns are usually found:

 
 
 
 

852. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

854. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

856. The prothallus of fern represents the plant:

 
 
 
 

857. All protozoans possess:

 
 
 
 

858. Isomorphic type alternation of generation is found in:

 
 
 
 

859. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. In Cycas:

 
 
 
 

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

 
 
 
 

864. Which fixes atmospheric nitrogen?