Quiz_Random

1. Cycas revoluta is widely grown as :

 
 
 
 

2. 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:

 
 
 
 

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

 
 
 
 

4. The sporophyte of Riccia is :

 
 
 
 

5. The first to isolate a plant virus was:

 
 
 
 

6. What is absent in Deuteromycetes?

 
 
 
 

7. The chief characteristic of class Ascomycetes is:

 
 
 
 

8. Vascular tissue is found in :

 
 
 
 

9. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

11. In moss, sporophyte is formed on:

 
 
 
 

12. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

13. Lichen show :

 
 
 
 

14. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Typhoid in man is caused by:

 
 
 
 

18. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Cryptogams include :

 
 
 
 

22. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

27. Among the algae kelps are :

 
 
 
 

28. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Viruses have:

 
 
 
 

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

 
 
 
 

33. Total parasites belong to:

 
 
 
 

34. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

39. The central part of Funaria axis is :

 
 
 
 

40. Amoeba is a member of the phylum:

 
 
 
 

41. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

53. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

55. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

57. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

58. Anoxygenic photosynthesis occurs in:

 
 
 
 

59. Leprosy is caused by:

 
 
 
 

60. Protists which are diploid reproduce sexually by:

 
 
 
 

61. Smut of maize is caused by :

 
 
 
 

62. The megaspore of Selaginella on germination produces:

 
 
 
 

63. 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:

 
 
 
 

64. Enteric bacteria are those bacteria that live:

 
 
 
 

65. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. The nucleus of bacteria is:

 
 
 
 

69. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

75. Bacteria are placed under:

 
 
 
 

76. The smallest bacterium is:

 
 
 
 

77. Centric discoid form of diatom is:

 
 
 
 

78. What is streptomycin?

 
 
 
 

79. Pseudomycelium is found in:

 
 
 
 

80. Virus and bacteriophage are made-up of:

 
 
 
 

81. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

83. A gill of Agaricus:

 
 
 
 

84. Ectocarpus produces:

 
 
 
 

85. Longest known virus is:

 
 
 
 

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

 
 
 
 

87. Yeast is a source of:

 
 
 
 

88. Reserve food in Euglena is:

 
 
 
 

89. Diphtheria is caused by:

 
 
 
 

90. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. The source of litmus is :

 
 
 
 

98. Late blight of potato is caused by :

 
 
 
 

99. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Vegetative reproduction in Cycas is by means of :

 
 
 
 

103. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

108. Photoautotrophic bacteria have:

 
 
 
 

109. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

111. Viruses are considered to be:

 
 
 
 

112. Infective part of virus was discovered by:

 
 
 
 

113. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

114. The sori in Dryopteris are found on:

 
 
 
 

115. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

117. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. The largest known bacterium is:

 
 
 
 

123. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. Which of the following statement is correct?

 
 
 
 

128. Sporophyte of fern is:

 
 
 
 

129. The chromosomal number in:

 
 
 
 

130. Lichens show :

 
 
 
 

131. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Wine turns sour because of:

 
 
 
 

135. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

137. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Sexual reproduction in Rhizopus is by:

 
 
 
 

141. Citrus canker is caused by:

 
 
 
 

142. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

145. Heterotrichous habit means :

 
 
 
 

146. To which class Riccia belongs :

 
 
 
 

147. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

149. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. The leaves of Funaria are :

 
 
 
 

153. The sporangiophores in Rhizopus are:

 
 
 
 

154. Ovary is absent in:

 
 
 
 

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

 
 
 
 

156. Penicillin was discovered by:

 
 
 
 

157. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Smallpox is caused by:

 
 
 
 

161. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

163. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

165. Funaria is a Bryophyta because :

 
 
 
 

166. Which of the following does not contain chlorophyll?

 
 
 
 

167. Which causes red tide?

 
 
 
 

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

 
 
 
 

169. Lichens are pioneers of vegetation in a :

 
 
 
 

170. Choose the correct statement about Spirogyra:

 
 
 
 

171. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

172. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. The ascus of yeast contains:

 
 
 
 

177. Most appropriate word for protozoans is:

 
 
 
 

178. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

180. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

181. Which statement is wrong in regard to bacteria?

 
 
 
 

182. Which of the following lichens is harmful?

 
 
 
 

183. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

184. Sleeping sickness disease in man is caused by:

 
 
 
 

185. The tallest moss in the world is :

 
 
 
 

186. Meristele of fern is:

 
 
 
 

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

 
 
 
 

188. Halophiles are the bacteria that require for growth:

 
 
 
 

189. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

194. Pinus gerardiana is :

 
 
 
 

195. Gymnosperms could also be called as:

 
 
 
 

196. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Majority of lichens are :

 
 
 
 

200. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

202. 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?

 
 
 
 

203. The DNA of E coli is:

 
 
 
 

204. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

206. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

208. Viruses are commonly transmitted in plants through:

 
 
 
 

209. Male gametophyte of Selaginella is found:

 
 
 
 

210. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

217. The sexual reproductive organs in Rhizopus are:

 
 
 
 

218. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. 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:

 
 
 
 

223. In angiosperms double fertilization represents:

 
 
 
 

224. Vascular cryptogam is the term used for :

 
 
 
 

225. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

227. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Most primitive embryophytes are placed in:

 
 
 
 

231. In Cycas microsporangia are borne on:

 
 
 
 

232. Placenta in fern is:

 
 
 
 

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

 
 
 
 

234. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. The order generally ends with:

 
 
 
 

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

 
 
 
 

239. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

240. Metulae are found in:

 
 
 
 

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

 
 
 
 

242. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

244. Plasmids are:

 
 
 
 

245. Water bloom is generally caused by :

 
 
 
 

246. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

249. Seeds are characteristically found in :

 
 
 
 

250. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

252. In Funaria :

 
 
 
 

253. Which is not true for Escherichia coli?

 
 
 
 

254. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

259. NBG of Lucknow is now named as:

 
 
 
 

260. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. The middle sterile part of capsule is called:

 
 
 
 

264. Which of the following shows heterotrichous habit?

 
 
 
 

265. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. In tracheophyta:

 
 
 
 

271. The largest alga is:

 
 
 
 

272. Simple polyembryony is found in :

 
 
 
 

273. Acetobacter is useful in:

 
 
 
 

274. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Spirogyra differs from moss protonema in having :

 
 
 
 

278. Reproduction in Cycas takes place by :

 
 
 
 

279. Bacteria differ from viruses in being sensitive to:

 
 
 
 

280. Lichens are ecologically important because :

 
 
 
 

281. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284.

 

285. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

287. Roots are absent in :

 
 
 
 

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

 
 
 
 

289. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

292. Embryophyta includes:

 
 
 
 

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

 
 
 
 

294. Protistan algae obtain their food as:

 
 
 
 

295. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

297. The teeth of peristome of Funaria are :

 
 
 
 

298. Which condition is found in Cycas?

 
 
 
 

299. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

303. Agar-agar is obtained from:

 
 
 
 

304. In Cycas the fertilization is:

 
 
 
 

305. Which is not found in bacteria?

 
 
 
 

306. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

308. Nitrogen-fixing bacteria may be located:

 
 
 
 

309. Fruits are not found in:

 
 
 
 

310. Bacteria were first discovered by:

 
 
 
 

311. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

314. Triple antigen injection or vaccine are for:

 
 
 
 

315. Water-net is the name of:

 
 
 
 

316. The disease apple scab is caused by:

 
 
 
 

317. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

319. The spermatozoids of Cycas are :

 
 
 
 

320. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

323. Most of the algae are :

 
 
 
 

324. Cellular slime mold is:

 
 
 
 

325. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

328. Club moss is the common name of :

 
 
 
 

329. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

331. Bryophyta have been placed in cryptogams because:

 
 
 
 

332. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Citrus canker is caused by :

 
 
 
 

339. The gametophyte of moss has distinct phases :

 
 
 
 

340. The coralloid roots are :

 
 
 
 

341. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. The archegonia in Selaginella develop on:

 
 
 
 

345. The sporophyte of Riccia is represented by :

 
 
 
 

346. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

348. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

350. Saccharomyces is used in:

 
 
 
 

351. What are plasmids?

 
 
 
 

352. Bacteria which are spherical are called:

 
 
 
 

353. Most primitive group of vascular plants are:

 
 
 
 

354. Bryophyta have a special character from other plants:

 
 
 
 

355. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

357. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

359. Chief constituents of bordeaux mixture are :

 
 
 
 

360. What is special feature of fern archegonia?

 
 
 
 

361. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Aflatoxin is produced as a product in :

 
 
 
 

365. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

367. Enzymes are absent in:

 
 
 
 

368. Oswald Tippo’s classification was based on :

 
 
 
 

369. Viroids have:

 
 
 
 

370. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Psilotum is:

 
 
 
 

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

 
 
 
 

376. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

378. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. The chloroplast of Chlamydomonas are:

 
 
 
 

383. Botulism is a:

 
 
 
 

384. The genetic material of poxvirus is:

 
 
 
 

385. An Hfr bacterium is one that contains:

 
 
 
 

386. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

388. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

390. Helotism word is used for the symbiosis between :

 
 
 
 

391. Funaria is :

 
 
 
 

392. The Rhizopus is:

 
 
 
 

393. Discovery of penicillin was based on:

 
 
 
 

394. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

396. The term stele was given by:

 
 
 
 

397. Black rust of wheat is caused by:

 
 
 
 

398. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

400. The vascular bundles of Cycas stem are :

 
 
 
 

401. Kuru, a human disease is caused by:

 
 
 
 

402. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

404. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

407. Mycoplasma contains:

 
 
 
 

408. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

410. One of the distinctive feature of Spirogyra is :

 
 
 
 

411. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

412. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. The archegonia of Selaginella are differentiated by:

 
 
 
 

417. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

419. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

424. The orders generally have the uniform endings:

 
 
 
 

425. Methanogens belong to:

 
 
 
 

426. Cyathia is characterized by:

 
 
 
 

427. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

432. Downy mildew disease is caused by :

 
 
 
 

433. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

435. Antibiotics cure the disease by:

 
 
 
 

436. Bacteriophage consists of:

 
 
 
 

437. Absorptive nutrition is:

 
 
 
 

438. Green plants are classified as:

 
 
 
 

439. Indusium in Dryopteris is:

 
 
 
 

440. Bacteria are found everywhere, except:

 
 
 
 

441. In moss, stomata are found:

 
 
 
 

442. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

444. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

446. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

448. In moss, conducting tissue is made up of

 
 
 
 

449. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

451. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

453. Detailed study of bacteriophage was made by:

 
 
 
 

454. Pinus microsporophyll bears:

 
 
 
 

455. In moss, calyptra is formed from:

 
 
 
 

456. Liverworts are included in :

 
 
 
 

457. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

459. Bacteriophages have been used as:

 
 
 
 

460. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

462. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Which is a gametophytic tissue?

 
 
 
 

467. An alga which is rich in proteins:

 
 
 
 

468. Disease resistant plant varieties can be produced by :

 
 
 
 

469. Yeast grows more rapidly in:

 
 
 
 

470. Which of the following are included in Tracheophyta?

 
 
 
 

471. Lichens form the first community in

 
 
 
 

472. Male gametes in Dryopteris are:

 
 
 
 

473. 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:

 
 
 
 

474. Red rot of sugarcane is caused by:

 
 
 
 

475. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

477. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

479. Ovules are not found enclosed in ovary in :

 
 
 
 

480. 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:

 
 
 
 

481. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

483. Generic name of mango is:

 
 
 
 

484. The ferns are usually found:

 
 
 
 

485. The young leaves of Cycas have :

 
 
 
 

486. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

491. All algae have:

 
 
 
 

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

 
 
 
 

493. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

495. Mixed cropping helps :

 
 
 
 

496. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

502. Mucilaginous canals in Cycas are found in :

 
 
 
 

503. The alga, Spirogyra are found in :

 
 
 
 

504. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. True sexuality is not found in:

 
 
 
 

508. Iodine is obtained from :

 
 
 
 

509. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

515. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

517. Which of the following statements is not correct?

 
 
 
 

518. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

526. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

528. Clostridium can:

 
 
 
 

529. Red rot of sugarcane is caused by :

 
 
 
 

530. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

532. Fruiting body of lichens is :

 
 
 
 

533. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. Rice, pea, potato are :

 
 
 
 

537. Fruits are not found in :

 
 
 
 

538. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

540. Interferon is a:

 
 
 
 

541. Ovules are not found enclosed in ovary in :

 
 
 
 

542. Cycas is similar to a mustard plant :

 
 
 
 

543. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. Red rot of sugarcane is caused by :

 
 
 
 

552. Select the wrong statement:

 
 
 
 

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

 
 
 
 

554. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

556. Chemosynthetic bacteria are:

 
 
 
 

557. Lichens are the indicator of pollution :

 
 
 
 

558. Ovules are not found enclosed in ovary of:

 
 
 
 

559. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

561. Fern prothallus produces:

 
 
 
 

562. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

564. Funaria can be differentiated from Cycas :

 
 
 
 

565. Which part of Riccia bears nurse cells?

 
 
 
 

566. Which of the following applies to Selaginella?

 
 
 
 

567. The lichens growing on rocks are called :

 
 
 
 

568. LSD is:

 
 
 
 

569. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

571. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

573. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

575. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

576. Common phycobiont in a lichen is :

 
 
 
 

577. The chloroplast in Ulothrix is :

 
 
 
 

578. How is moss different from fern?

 
 
 
 

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

 
 
 
 

580. Ovary is absent in :

 
 
 
 

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

 
 
 
 

582. Small epidermal swellings due to infection are called :

 
 
 
 

583. Funaria are commonly found :

 
 
 
 

584. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. The rhizoids of Funaria are :

 
 
 
 

588. The two conjugating gametangia of Rhizopus are:

 
 
 
 

589. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

591. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

596. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

600. The microsporophylls on the cone of Cycas are :

 
 
 
 

601. Pollination drop is:

 
 
 
 

602. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. Nitrifying bacteria play an important role by converting:

 
 
 
 

607. The sporangia of Selaginella are attached:

 
 
 
 

608. Fern plants are:

 
 
 
 

609. Most primitive kind of flower is represented by:

 
 
 
 

610. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Green plants are classified as :

 
 
 
 

614. Ergot of rye is caused by:

 
 
 
 

615. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. Bacteria are considered to be plants because they:

 
 
 
 

619. Which among the following is a shrub?

 
 
 
 

620. Vascular cryptogams is the term used for:

 
 
 
 

621. The tree fern is:

 
 
 
 

622. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. The most important property of yeast is:

 
 
 
 

632. Rhizopus and yeast are usually:

 
 
 
 

633. Meiosis in Ulothrix takes place:

 
 
 
 

634. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

636. Streptomyces falls under:

 
 
 
 

637. 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?

 
 
 
 

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

 
 
 
 

639. Embryophyta includes :

 
 
 
 

640. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

641. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

642. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

644. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

646. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

651. Cell walls of Gram-positive bacteria contain:

 
 
 
 

652. In binomial system most of the words are:

 
 
 
 

653. Some diseases caused by bacteria are:

 
 
 
 

654. Mycoplasma is different from bacteria due to:

 
 
 
 

655. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Virion refers to:

 
 
 
 

659. Sexual reproduction of lichen is due to :

 
 
 
 

660. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

663. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

665. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

666. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

668. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

670. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

672. . Tapetum develops in:

 
 
 
 

673. Which is a tautonym?

 
 
 
 

674. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

682. The leafy fern plant represents the:

 
 
 
 

683. The fungi are usually:

 
 
 
 

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

 
 
 
 

685. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

687. Who named prion?

 
 
 
 

688. Which one of the following statement is wrong?

 
 
 
 

689. The male gametes of Pinus are :

 
 
 
 

690. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. Maximum diversity of life forms occurs in :

 
 
 
 

695. Cleavage polyembryony is found in :

 
 
 
 

696. The plants of Funaria grow :

 
 
 
 

697. Which of the following is sago palm?

 
 
 
 

698. Protozoans are considered animals because these are:

 
 
 
 

699. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

701. Desired type of Cycas can be grown by:

 
 
 
 

702. The sporangium of fern contains nearly:

 
 
 
 

703. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Oswald Tippo’s classification is:

 
 
 
 

707. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

709. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

716. Number of capsomeres forming capsid of TMV is:

 
 
 
 

717. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

719. Streptomycin is obtained from:

 
 
 
 

720. The stele of Dryopteris is a:

 
 
 
 

721. Which is a fungicide?

 
 
 
 

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

 
 
 
 

723. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Facultative parasite is:

 
 
 
 

732. All archaebacteria lack:

 
 
 
 

733. In Funaria, calyptra is derived from :

 
 
 
 

734. Little leaf disease of Brinjal is caused by:

 
 
 
 

735. The disease symptom necrosis refers to :

 
 
 
 

736. Pinus is:

 
 
 
 

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

 
 
 
 

738. Yeast belongs to class:

 
 
 
 

739.

740. What is a vector?

 
 
 
 

741. Sometimes the bacterial cell is enclosed in:

 
 
 
 

742. 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:

 
 
 
 

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

 
 
 
 

744. Ulothrix produces :

 
 
 
 

745. The zoospores of Ulothrix are :

 
 
 
 

746. Spermatophyta are characterized by producing:

 
 
 
 

747. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

750. Usually, bacteria reproduce by:

 
 
 
 

751. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. Pythium debaryanum is the causative agent of:

 
 
 
 

756. The fungi are mostly:

 
 
 
 

757. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

760. Aflatoxin is produced by:

 
 
 
 

761. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

763. Pteridophytes are also known as :

 
 
 
 

764. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

770. E coli is a:

 
 
 
 

771. Nannandria are:

 
 
 
 

772. Which group of algae have an incipient nucleus?

 
 
 
 

773. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Which of the following is a monocot?

 
 
 
 

779. Which organisms are the oldest life forms?

 
 
 
 

780. Which class of Protozoa includes all parasitic forms?

 
 
 
 

781. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

783. Cyanophage is a virus that attacks:

 
 
 
 

784. Pasteur is famous for his:

 
 
 
 

785. Pasteurization of milk involves heating for:

 
 
 
 

786. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

795. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

803. Fairy ring is the name given to:

 
 
 
 

804. TMV was isolated in crystalline form by:

 
 
 
 

805. Black rust of wheat is caused by:

 
 
 
 

806. Gram stain is used to:

 
 
 
 

807. Who among the following discovered virus?

 
 
 
 

808. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Which is the nuclear material in bacteria?

 
 
 
 

817. The Rhizopus gametes are formed in:

 
 
 
 

818. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

820. Pollination in Cycas takes place by :

 
 
 
 

821. Facultative saprophyte is:

 
 
 
 

822. The flagella of Chlamydomonas are:

 
 
 
 

823. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

828. In Cycas which structure is equivalent to stamen?

 
 
 
 

829. Which one of the following is a monocot?

 
 
 
 

830. To which country Antony van Leeuwenhoek belong?

 
 
 
 

831. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

834.

835. The fungi used as food are:

 
 
 
 

836. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

838. Photosynthetic bacteria have:

 
 
 
 

839. Which is the correct statement about Selaginella?

 
 
 
 

840. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

842. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

844. 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?

 
 
 
 

845. Bentham and Hooker placed gymnosperms:

 
 
 
 

846. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

847. Who discovered cyanophages?

 
 
 
 

848. Black rust of wheat is caused by:

 
 
 
 

849. The similarity between cyanobacteria and bacteria:

 
 
 
 

850.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

856. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. The mode of nutrition of bacteria is usually:

 
 
 
 

864. Cycas plant in appearance resembles :