Quiz_Random

1. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

3. The lambda phase is a:

 
 
 
 

4.

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

 
 
 
 

6. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

8. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

10. Some diseases caused by bacteria are:

 
 
 
 

11. The teeth of peristome of Funaria are :

 
 
 
 

12. Ectocarpus produces:

 
 
 
 

13. Streptomycin is obtained from:

 
 
 
 

14. Fertility of the soil is increased by:

 
 
 
 

15. In Cycas which structure is equivalent to stamen?

 
 
 
 

16. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Iodine is obtained from:

 
 
 
 

20. Ergot of rye is caused by:

 
 
 
 

21. In Pteris, the archegonia are present:

 
 
 
 

22. Embryophyta includes:

 
 
 
 

23. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. What is special feature of fern archegonia?

 
 
 
 

28. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

38. Select the wrong statement:

 
 
 
 

39. Selaginella differs from Moss in having:

 
 
 
 

40. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

46. Bacteriophage consists of:

 
 
 
 

47. 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:

 
 
 
 

48. Smallpox is caused by:

 
 
 
 

49. Photoautotrophic bacteria have:

 
 
 
 

50. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

52. The prothallus of fern represents the plant:

 
 
 
 

53. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

55. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

57. Bentham and Hooker placed gymnosperms:

 
 
 
 

58. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

60. Diphtheria is caused by:

 
 
 
 

61. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Vascular cryptogam is the term used for :

 
 
 
 

67. Oswald Tippo’s classification was based on :

 
 
 
 

68. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

70. The rhizoids of Funaria are :

 
 
 
 

71. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

73. Psilotum is:

 
 
 
 

74. The fern plant is:

 
 
 
 

75. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Which condition is found in Cycas?

 
 
 
 

81. Etiology includes the study of :

 
 
 
 

82.

 

83. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

85. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Pythium debaryanum is the causative agent of:

 
 
 
 

89. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

98. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Funaria is :

 
 
 
 

102. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. The source of litmus is :

 
 
 
 

106. Pinus is:

 
 
 
 

107. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Virion refers to:

 
 
 
 

112. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Where does meiosis occur in yeast?

 
 
 
 

116. Which group of algae have an incipient nucleus?

 
 
 
 

117. Gram stain is used to:

 
 
 
 

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

 
 
 
 

119. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

120. 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:

 
 
 
 

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

 
 
 
 

122. Among the algae kelps are :

 
 
 
 

123. Acetobacter is useful in:

 
 
 
 

124. Which is absent from the xylem of Cycas?

 
 
 
 

125. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. The vascular bundles of Cycas stem are :

 
 
 
 

130. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

132. Some bacteria cannot be killed easily because of:

 
 
 
 

133. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

135. Coenogamete is found in:

 
 
 
 

136. Germ theory of disease was proposed by:

 
 
 
 

137. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

138. The ferns are usually found:

 
 
 
 

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

 
 
 
 

140. Club moss and Peat moss belong to:

 
 
 
 

141. Indusium in Dryopteris is:

 
 
 
 

142. Chief constituents of bordeaux mixture are :

 
 
 
 

143. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

145. Some biologists have used the term Mycetozoa for:

 
 
 
 

146. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

148. The Rhizopus is:

 
 
 
 

149. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

151. Methanogens belong to:

 
 
 
 

152. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

154. Which lichen is called Reindeer moss?

 
 
 
 

155. Why is Cycas called a living fossil?

 
 
 
 

156. The tree fern is:

 
 
 
 

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

 
 
 
 

158. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

160. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

162. Tautonyms are illegitimate in:

 
 
 
 

163. Which is an edible fungus?

 
 
 
 

164. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

166. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

168. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

170. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. The fungi that grow on wood are called:

 
 
 
 

174. Sporophyte of fern is:

 
 
 
 

175. Cleavage polyembryony is found in :

 
 
 
 

176. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

178. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

179. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

182. Siphonogamy is found in:

 
 
 
 

183. The stele of Dryopteris is a:

 
 
 
 

184. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Ovules are not found enclosed in ovary in :

 
 
 
 

193. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. Which of the following statements is not correct?

 
 
 
 

197. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

199. Most primitive group of vascular plants are:

 
 
 
 

200. Longest known virus is:

 
 
 
 

201. Winged seeds are found in :

 
 
 
 

202. Discovery of penicillin was based on:

 
 
 
 

203. Leaf spot of groundnut is caused by :

 
 
 
 

204. Gymnosperms could also be called as:

 
 
 
 

205. Gametophyte is the main plant body in :

 
 
 
 

206. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

208. Linnaeus is credited with introducing:

 
 
 
 

209. The leaves of Funaria are :

 
 
 
 

210. The fungi are usually:

 
 
 
 

211. Funaria is :

 
 
 
 

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

 
 
 
 

213. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

218. What is a vector?

 
 
 
 

219. Nitrifying bacteria play an important role by converting:

 
 
 
 

220. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. Select the wrong statement:

 
 
 
 

226. The disease symptom necrosis refers to :

 
 
 
 

227. Rhizophore of Selaginella is:

 
 
 
 

228. Infective part of virus was discovered by:

 
 
 
 

229. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. Plasmids are:

 
 
 
 

234. The largest known bacterium is:

 
 
 
 

235. The ascus of yeast contains:

 
 
 
 

236. Detailed study of bacteriophage was made by:

 
 
 
 

237. Sexual reproduction of lichen is due to :

 
 
 
 

238. All algae have:

 
 
 
 

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

 
 
 
 

240. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. Which of the following applies to Selaginella?

 
 
 
 

244. Which bacteria convert nitrate into nitrogen?

 
 
 
 

245. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

249. Fruits are not found in:

 
 
 
 

250. Who named prion?

 
 
 
 

251. Black rust of wheat is caused by:

 
 
 
 

252. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

254. The group algae possesses representatives belonging to kingdom:

 
 
 
 

255. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

257. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

259. In moss, stomata are found:

 
 
 
 

260. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

262. Pasteur is famous for his:

 
 
 
 

263. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. Most of the lichens are composed of :

 
 
 
 

267. Genetic material of TMV is:

 
 
 
 

268. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

270. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

272. Black rust of wheat is caused by:

 
 
 
 

273. Fruiting body of lichens is :

 
 
 
 

274. The sporangiophores in Rhizopus are:

 
 
 
 

275. Lichens are indicators of :

 
 
 
 

276. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Pasteurization of milk involves heating for:

 
 
 
 

281. Lichens reproduce by :

 
 
 
 

282. Pasteurized milk is:

 
 
 
 

283. Little leaf disease of Brinjal is caused by:

 
 
 
 

284. Mycoplasma contains:

 
 
 
 

285. Late blight of potato is caused by :

 
 
 
 

286. Which of the following are absent in Mycoplasma?

 
 
 
 

287. The Rhizopus gametes are formed in:

 
 
 
 

288. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

290. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

292. Fruits are not found in :

 
 
 
 

293. Which is the correct statement about Selaginella?

 
 
 
 

294. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

298. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. Polystelic condition is found in:

 
 
 
 

302. Which is a fungicide?

 
 
 
 

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

 
 
 
 

304. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Choose the correct statement about Spirogyra:

 
 
 
 

310. In tracheophyta:

 
 
 
 

311. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

313. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

315. The megasporangium of Selaginella is:

 
 
 
 

316. Reproduction in Cycas takes place by :

 
 
 
 

317. Rhizopus and yeast are usually:

 
 
 
 

318. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

320. What are plasmids?

 
 
 
 

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

 
 
 
 

322. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

324. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

328. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

330. Lichen show :

 
 
 
 

331. In Cycas microsporangia are borne on:

 
 
 
 

332. Green plants are classified as:

 
 
 
 

333. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

336. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. In Cycas the fertilization is:

 
 
 
 

343. Each chloroplast in Spirogyra bears :

 
 
 
 

344. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

349. Cap cells are found in the filament of:

 
 
 
 

350. Rice, pea, potato are :

 
 
 
 

351. The leaves of Funaria are :

 
 
 
 

352. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

359. The spermatozoids of Cycas are :

 
 
 
 

360. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

362. Reserve food in Euglena is:

 
 
 
 

363. Liverworts are included in :

 
 
 
 

364. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

366. What is streptomycin?

 
 
 
 

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

 
 
 
 

368. Majority of lichens are :

 
 
 
 

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

 
 
 
 

370. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

372. Club moss is the common name of :

 
 
 
 

373. Fern prothallus is:

 
 
 
 

374. Mycoplasmas are not viruses in nature because:

 
 
 
 

375. Bacteria are considered to be plants because they:

 
 
 
 

376. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Fairy ring is the name given to:

 
 
 
 

380. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. Circular DNA is seen in:

 
 
 
 

384. 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?

 
 
 
 

385. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. The megaspore of Selaginella on germination produces:

 
 
 
 

389. Wine turns sour because of:

 
 
 
 

390. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. The sporangia of Selaginella are attached:

 
 
 
 

395. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. The middle sterile part of capsule is called:

 
 
 
 

399. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

401. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

403. The antibiotic is obtained from:

 
 
 
 

404. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

405. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

407. The phloem of vascular system of Cycas is :

 
 
 
 

408. Saccharomyces ludwigii ascus produces:

 
 
 
 

409. The development of sporangium in Selaginella is:

 
 
 
 

410. Ovary is absent in:

 
 
 
 

411. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

413. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. 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:

 
 
 
 

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

 
 
 
 

418. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

424. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Meristele of fern is:

 
 
 
 

430. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

432. In binomial system most of the words are:

 
 
 
 

433. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

435. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

437. Bivalved siliceous shell or frustule occur in:

 
 
 
 

438. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. 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?

 
 
 
 

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

 
 
 
 

446. Cryptogams include :

 
 
 
 

447. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

448. The mycelium of Rhizopus is:

 
 
 
 

449. Aflatoxin is produced by:

 
 
 
 

450. Desired type of Cycas can be grown by:

 
 
 
 

451. Cycas revoluta is widely grown as :

 
 
 
 

452. The leaf of Cycas shows:

 
 
 
 

453. Generic name of mango is:

 
 
 
 

454. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. Clostridium can:

 
 
 
 

459. Water-net is the name of:

 
 
 
 

460. Red rot of sugarcane is caused by :

 
 
 
 

461. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

463. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

465. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

467. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

469. The nucleus of bacteria is:

 
 
 
 

470. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

472. The antherozoids of Funaria are :

 
 
 
 

473. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

475. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. Bacteria which are spherical are called:

 
 
 
 

483. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

488. E coli is a:

 
 
 
 

489. Sporophyte of Funaria is :

 
 
 
 

490. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. Most primitive embryophytes are placed in:

 
 
 
 

497. Facultative parasite is:

 
 
 
 

498. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

500. Which causes red tide?

 
 
 
 

501. Antibiotic has been extracted from :

 
 
 
 

502. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Spermatophyta are characterized by producing:

 
 
 
 

507. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

509. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

511. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

513. Early blight of potato is caused by:

 
 
 
 

514. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

516. Cycas is :

 
 
 
 

517. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. Which fixes atmospheric nitrogen?

 
 
 
 

521. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

525. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

527. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

530. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

532. Cellular slime mold is:

 
 
 
 

533. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

535. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. The most important property of yeast is:

 
 
 
 

542. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

548. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551.

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

 
 
 
 

553. Ovary is absent in :

 
 
 
 

554. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Citrus canker is caused by:

 
 
 
 

558. The largest alga is:

 
 
 
 

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

 
 
 
 

560. Mycoplasma are:

 
 
 
 

561. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. How is moss different from fern?

 
 
 
 

565. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

567. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

568. In Gymnosperms endosperm is a:

 
 
 
 

569. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

571. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

573. 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:

 
 
 
 

574. Total parasites belong to:

 
 
 
 

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

 
 
 
 

576. Which is not true for Escherichia coli?

 
 
 
 

577. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

579. Lichens are pioneers of vegetation in a :

 
 
 
 

580. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

582. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

584. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

586. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. The fungi used as food are:

 
 
 
 

590. Germination of the seed of Pinus is :

 
 
 
 

591. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

593. Woody climbers are known as :

 
 
 
 

594. Fruits are not found in Cycas because:

 
 
 
 

595. The gametophyte produced by apospory is :

 
 
 
 

596. Isomorphic type alternation of generation is found in:

 
 
 
 

597. Pollination drop is:

 
 
 
 

598. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. Meiosis in Ulothrix takes place:

 
 
 
 

602. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. In angiosperms double fertilization represents:

 
 
 
 

609. Nannandria are:

 
 
 
 

610. Acellular slime mold is/are:

 
 
 
 

611. Pinus gerardiana is :

 
 
 
 

612. The order generally ends with:

 
 
 
 

613. Which class of Protozoa includes all parasitic forms?

 
 
 
 

614. The archegonia in Selaginella develop on:

 
 
 
 

615. Downy mildew disease is caused by :

 
 
 
 

616. Viruses are commonly transmitted in plants through:

 
 
 
 

617. Triple antigen injection or vaccine are for:

 
 
 
 

618. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

620. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

623. Mostly type of zygospore in Ulothrix is:

 
 
 
 

624. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

626. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

631. LSD is:

 
 
 
 

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

 
 
 
 

633. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

638. Yeast belongs to class:

 
 
 
 

639. The genetic material of poxvirus is:

 
 
 
 

640. . Tapetum develops in:

 
 
 
 

641. The similarity between cyanobacteria and bacteria:

 
 
 
 

642. Bacteria growing on synthetic medium are called:

 
 
 
 

643. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

645. Absorptive nutrition is:

 
 
 
 

646. The photosynthetic protists are:

 
 
 
 

647. The sporangium of fern contains nearly:

 
 
 
 

648. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

650. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653. Spirogyra differs from moss protonema in having :

 
 
 
 

654. Which is a tautonym?

 
 
 
 

655. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

657. Maximum diversity of life forms occurs in :

 
 
 
 

658. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

660. Common phycobiont in a lichen is :

 
 
 
 

661. Which of the following lichens is harmful?

 
 
 
 

662. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

664. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

669. Mucilaginous canals in Cycas are found in :

 
 
 
 

670. In Funaria :

 
 
 
 

671. The male gametes of Pinus are :

 
 
 
 

672. Spores of which plants have chloroplast:

 
 
 
 

673. Agar-agar is obtained from:

 
 
 
 

674. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

678. In moss, calyptra is formed from:

 
 
 
 

679. Most appropriate word for protozoans is:

 
 
 
 

680. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

686. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

688. Cycas is:

 
 
 
 

689. Redness of red sea is due to :

 
 
 
 

690. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

692. Reproduction in Rhizopus is:

 
 
 
 

693. Which have the largest antherozoid?

 
 
 
 

694. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

696. Bryophyta have been placed in cryptogams because:

 
 
 
 

697. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

699. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

701. The chromosomal number in:

 
 
 
 

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

 
 
 
 

703. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

704. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

705. Photosynthetic protists belong to:

 
 
 
 

706. The fungi are mostly:

 
 
 
 

707. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. A gill of Agaricus:

 
 
 
 

711. Which one of the following is a monocot?

 
 
 
 

712. Protozoans are considered animals because these are:

 
 
 
 

713.

714. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

717. Metulae are found in:

 
 
 
 

718. Seeds are characteristically found in :

 
 
 
 

719. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

721. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

725. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

727. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

729. Botulism is a:

 
 
 
 

730. The roots of Cycas are :

 
 
 
 

731. TMV was isolated in crystalline form by:

 
 
 
 

732. Broad spectrum antibiotic is, which:

 
 
 
 

733. Which of the following is a monocot?

 
 
 
 

734. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

736. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

737. The gametophyte of fern bears:

 
 
 
 

738. The tallest moss in the world is :

 
 
 
 

739. What is the role of nitrifying bacteria?

 
 
 
 

740. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

742. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

744. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

745. Amoeba is a member of the phylum:

 
 
 
 

746. What is absent in Deuteromycetes?

 
 
 
 

747. The coralloid roots are :

 
 
 
 

748. Heterospory and ligulate leaves are a feature of:

 
 
 
 

749. Most primitive kind of flower is represented by:

 
 
 
 

750. Embryophyta includes :

 
 
 
 

751. Cyanophage is a virus that attacks:

 
 
 
 

752. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

754. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Enzymes are absent in:

 
 
 
 

760. Green plants are classified as :

 
 
 
 

761. The role of meiosis is for:

 
 
 
 

762. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

765. 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:

 
 
 
 

766. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. Funaria can be differentiated from Cycas :

 
 
 
 

770. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

772. Ulothrix produces :

 
 
 
 

773. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

775. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Which one of the following statement is wrong?

 
 
 
 

779. In Cycas:

 
 
 
 

780. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

782. Late blight of potato is caused by:

 
 
 
 

783. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

785. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

791. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

793. Viroids have:

 
 
 
 

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

 
 
 
 

795. 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:

 
 
 
 

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

 
 
 
 

797. Male gametophyte of Selaginella is found:

 
 
 
 

798. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

800. The two conjugating gametangia of Rhizopus are:

 
 
 
 

801. Who discovered heterothallism in fungi?

 
 
 
 

802. Climbers are found in genus:

 
 
 
 

803. Fern phloem lacks:

 
 
 
 

804. Bryophyta have a special character from other plants:

 
 
 
 

805. Fern prothallus produces:

 
 
 
 

806. Pollination in Pinus is :

 
 
 
 

807. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

809. Funaria is a Bryophyta because :

 
 
 
 

810. Protistan algae obtain their food as:

 
 
 
 

811. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

813. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. One of the distinctive feature of Spirogyra is :

 
 
 
 

817. Roots are absent in :

 
 
 
 

818. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

820. Cocci types of bacteria are:

 
 
 
 

821. Simple polyembryony is found in :

 
 
 
 

822. Penicillin was discovered by:

 
 
 
 

823. Transfusion tissue is present in the leaflet of:

 
 
 
 

824. The zoospores of Ulothrix are :

 
 
 
 

825. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

827. Cell walls of Gram-positive bacteria contain:

 
 
 
 

828. In Selaginella, the microsporangia are:

 
 
 
 

829. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Which is the nuclear material in bacteria?

 
 
 
 

836. The chief characteristic of class Ascomycetes is:

 
 
 
 

837. Pteridophyta are also called:

 
 
 
 

838. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

840. Rhizoids of Riccia are :

 
 
 
 

841. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

847. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

849. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

851. Who among the following discovered virus?

 
 
 
 

852. Red rot of sugarcane is caused by :

 
 
 
 

853. Kuru, a human disease is caused by:

 
 
 
 

854. The DNA of E coli is:

 
 
 
 

855. Pythium debaryanum is the causative agent of:

 
 
 
 

856. The chief characteristic of bryophyta is that :

 
 
 
 

857. The smallest bacterium is:

 
 
 
 

858. Sexual reproduction in Rhizopus is by:

 
 
 
 

859. Fern plants are:

 
 
 
 

860. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Streptomyces falls under:

 
 
 
 

864. In Funaria, calyptra is derived from :