Quiz_Random

1. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. The chief characteristic of class Ascomycetes is:

 
 
 
 

5. In Cycas the fertilization is:

 
 
 
 

6. Which of the following are included in Tracheophyta?

 
 
 
 

7. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

9. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

11. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

13. Bryophyta have been placed in cryptogams because:

 
 
 
 

14. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

24. The root nodules of leguminous plants contain:

 
 
 
 

25. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

27. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

29. Embryophyta includes:

 
 
 
 

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

 
 
 
 

31. Centric discoid form of diatom is:

 
 
 
 

32. True sexuality is not found in:

 
 
 
 

33. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

35. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Spirogyra represents the :

 
 
 
 

39. Fern phloem lacks:

 
 
 
 

40. Ovules are not found enclosed in ovary in :

 
 
 
 

41. In Gymnosperms endosperm is a:

 
 
 
 

42. Indusium in Dryopteris is:

 
 
 
 

43. Which of the following is a heterosporous pteridophyte?

 
 
 
 

44. Funaria is :

 
 
 
 

45. All algae have:

 
 
 
 

46. Soil fertility is lost by the activities of:

 
 
 
 

47. Most of the lichens are composed of :

 
 
 
 

48. Majority of lichens are :

 
 
 
 

49. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

55. The chief characteristic of bryophyta is that :

 
 
 
 

56. Pteridophytes are also known as :

 
 
 
 

57. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

58. Funaria is a Bryophyta because :

 
 
 
 

59. Heterospory and ligulate leaves are a feature of:

 
 
 
 

60. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

62. The gametophyte of fern is as:

 
 
 
 

63. The ferns are usually found:

 
 
 
 

64. The gametophyte of moss has distinct phases :

 
 
 
 

65. The most important property of yeast is:

 
 
 
 

66. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. How is moss different from fern?

 
 
 
 

71. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

73. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

78. Proembryo in Pinus is :

 
 
 
 

79. In Pteris, the archegonia are present:

 
 
 
 

80. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

82. 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:

 
 
 
 

83. Funaria can be differentiated from Cycas :

 
 
 
 

84. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Which statement is wrong in regard to bacteria?

 
 
 
 

88. Bacteria which are spherical are called:

 
 
 
 

89. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. The term stele was given by:

 
 
 
 

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

 
 
 
 

95. Which of the following are absent in Mycoplasma?

 
 
 
 

96. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

98. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

100. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

102. Pneumonia is caused by:

 
 
 
 

103. Late blight of potato is caused by :

 
 
 
 

104. Pasteur is famous for his:

 
 
 
 

105. Which of the following applies to Selaginella?

 
 
 
 

106. 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?

 
 
 
 

107. Parmelia belongs to :

 
 
 
 

108. Chief constituents of bordeaux mixture are :

 
 
 
 

109. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. Lichens reproduce by :

 
 
 
 

113. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

115. The order generally ends with:

 
 
 
 

116. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

118. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

120. The leaves of Funaria are :

 
 
 
 

121. To which class Riccia belongs :

 
 
 
 

122. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

130. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

132. Azolla and Salvinia both are:

 
 
 
 

133. Nitrifying bacteria play an important role by converting:

 
 
 
 

134. Climbers are found in genus:

 
 
 
 

135. Black rust of wheat is caused by:

 
 
 
 

136. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

138. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

140. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

141. Mostly type of zygospore in Ulothrix is:

 
 
 
 

142. Lichens form the first community in

 
 
 
 

143. 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:

 
 
 
 

144. Ulothrix produces :

 
 
 
 

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

 
 
 
 

146.

 

147. Funaria is :

 
 
 
 

148. Wine turns sour because of:

 
 
 
 

149. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Which of the following is a monocot?

 
 
 
 

154. Heterotrichous habit means :

 
 
 
 

155. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

157. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

159. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

161. Oswald Tippo’s classification is:

 
 
 
 

162. The tree fern is:

 
 
 
 

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

 
 
 
 

164. Bivalved siliceous shell or frustule occur in:

 
 
 
 

165. Spores of which plants have chloroplast:

 
 
 
 

166. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

168. Vascular cryptogams is the term used for:

 
 
 
 

169. Ergot is obtained from :

 
 
 
 

170. Green plants are classified as :

 
 
 
 

171. Quarantine regulations are concerned with:

 
 
 
 

172. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

174. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

176. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

178. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

180. Pinus gerardiana is :

 
 
 
 

181. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

184. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. Special feature of pollen grains of Pinus is :

 
 
 
 

188. Generic name of mango is:

 
 
 
 

189. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

191. Endemic plants are characterised by their:

 
 
 
 

192. Most primitive embryophytes are placed in:

 
 
 
 

193. Helotism word is used for the symbiosis between :

 
 
 
 

194. The first to isolate a plant virus was:

 
 
 
 

195. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

201. In moss, peristomial teeth are:

 
 
 
 

202. Which is a fungicide?

 
 
 
 

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

 
 
 
 

204. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

206. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

208. Yeast is a source of:

 
 
 
 

209. Lichens show :

 
 
 
 

210. The fern plant is:

 
 
 
 

211. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

213. Agar-agar is obtained from:

 
 
 
 

214. Which is a tautonym?

 
 
 
 

215. Cyanophage is a virus that attacks:

 
 
 
 

216. The gametophyte of fern bears:

 
 
 
 

217. Pseudomycelium is found in:

 
 
 
 

218. 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:

 
 
 
 

219. Which is an edible fungus?

 
 
 
 

220. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Which group of algae have an incipient nucleus?

 
 
 
 

224. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

226. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. In dinoflagellates, the two flagella are:

 
 
 
 

242. Chemosynthetic bacteria are:

 
 
 
 

243. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

246. The flagella of Chlamydomonas are:

 
 
 
 

247. The gametophyte produced by apospory is :

 
 
 
 

248. Cryptogams include :

 
 
 
 

249. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

250. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Which bacteria convert nitrate into nitrogen?

 
 
 
 

254. Select the wrong statement:

 
 
 
 

255. Early blight of potato is caused by:

 
 
 
 

256. 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?

 
 
 
 

257. Cycas is:

 
 
 
 

258. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

260. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

262. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

264. Most appropriate word for protozoans is:

 
 
 
 

265. All archaebacteria lack:

 
 
 
 

266. Streptomycin is obtained from:

 
 
 
 

267. Cycas revoluta is widely grown as :

 
 
 
 

268. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. Longest known virus is:

 
 
 
 

274. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

276. The mode of nutrition of bacteria is usually:

 
 
 
 

277. The upper region of moss capsule is :

 
 
 
 

278. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Reproduction in Rhizopus is:

 
 
 
 

282. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. Diphtheria is caused by:

 
 
 
 

286. 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?

 
 
 
 

287. Rice, pea, potato are :

 
 
 
 

288. Pinus microsporophyll bears:

 
 
 
 

289. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

291. The fungi are usually:

 
 
 
 

292. Who discovered cyanophages?

 
 
 
 

293. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

295. The ascus of yeast contains:

 
 
 
 

296. Roots are absent in :

 
 
 
 

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

 
 
 
 

298. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. In binomial system most of the words are:

 
 
 
 

302. Saccharomyces is used in:

 
 
 
 

303. In moss, sporogenous tissue arises from:

 
 
 
 

304. Lichen show :

 
 
 
 

305. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

307. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

310. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. Acetobacter is useful in:

 
 
 
 

316. The disease apple scab is caused by:

 
 
 
 

317. Cell walls of Gram-positive bacteria contain:

 
 
 
 

318. Fruits are not found in Cycas because:

 
 
 
 

319. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Which of the following is sago palm?

 
 
 
 

323. Gametophyte is the main plant body in :

 
 
 
 

324. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

326. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

328. The lambda phase is a:

 
 
 
 

329. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. The leafy fern plant represents the:

 
 
 
 

333. Seeds are characteristically found in :

 
 
 
 

334. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

335. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. In Pteris, the roots are:

 
 
 
 

340. Mycoplasma are:

 
 
 
 

341. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

342. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

349. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

351. Which is not true for Escherichia coli?

 
 
 
 

352. Which of the following is a parasitic algae?

 
 
 
 

353. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

354. Diploxylic vascular bundles are found in:

 
 
 
 

355. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

357. Each chloroplast in Spirogyra bears :

 
 
 
 

358. Typhoid in man is caused by:

 
 
 
 

359. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

361. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

366. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Liverworts are included in :

 
 
 
 

371. Simple polyembryony is found in :

 
 
 
 

372. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. The rhizoids of Funaria are :

 
 
 
 

381. Water-borne bacterial diseases are:

 
 
 
 

382. Bacteriophage consists of:

 
 
 
 

383. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Which is absent from the xylem of Cycas?

 
 
 
 

387. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

389. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Black rust of wheat is caused by:

 
 
 
 

395. Most of the algae are :

 
 
 
 

396. The stele of Dryopteris is a:

 
 
 
 

397. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

399. The disease symptom necrosis refers to :

 
 
 
 

400. The spur of Pinus roxburghii has :

 
 
 
 

401. Pinus is:

 
 
 
 

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

 
 
 
 

403. Cellular slime mold is:

 
 
 
 

404. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

406. Cycas is different from mango in :

 
 
 
 

407. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Sporophyte of fern is:

 
 
 
 

414. In tracheophyta:

 
 
 
 

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

 
 
 
 

416. Chemosynthetic bacteria are:

 
 
 
 

417. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

423. Spermatophyta are characterized by producing:

 
 
 
 

424. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

434. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

436. Streptomyces falls under:

 
 
 
 

437. Pythium debaryanum is the causative agent of:

 
 
 
 

438. Virion refers to:

 
 
 
 

439. Iodine is obtained from :

 
 
 
 

440. Bacteria differ from viruses in being sensitive to:

 
 
 
 

441. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

443. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

445. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

447. Water bloom is generally caused by :

 
 
 
 

448. The middle sterile part of capsule is called:

 
 
 
 

449. Multicellular and jacketed sex organs are found in :

 
 
 
 

450. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

452. Antibiotic has been extracted from :

 
 
 
 

453. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

455. A gill of Agaricus:

 
 
 
 

456. Pollination in Cycas takes place by :

 
 
 
 

457. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

459. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

461. The sexual reproductive organs in Rhizopus are:

 
 
 
 

462. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

464. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

466. Heterocysts are found in :

 
 
 
 

467. The group algae possesses representatives belonging to kingdom:

 
 
 
 

468. Triple antigen injection or vaccine are for:

 
 
 
 

469. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

471. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

473. Green plants are classified as:

 
 
 
 

474. Acellular slime mold is/are:

 
 
 
 

475. Which of the following shows heterotrichous habit?

 
 
 
 

476. Which fixes atmospheric nitrogen?

 
 
 
 

477. In Cycas which structure is equivalent to stamen?

 
 
 
 

478. Polystelic condition is found in:

 
 
 
 

479. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Viruses are considered to be:

 
 
 
 

484. Botulism is a:

 
 
 
 

485. Protists which are diploid reproduce sexually by:

 
 
 
 

486. The prothallus of fern represents the plant:

 
 
 
 

487. Pollination in Pinus is :

 
 
 
 

488. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

490. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

492. Lichens are pioneers of vegetation in a :

 
 
 
 

493. The sporophyte of Riccia is represented by :

 
 
 
 

494. The antherozoids of Funaria are :

 
 
 
 

495. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

499. The phloem of vascular system of Cycas is :

 
 
 
 

500. 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:

 
 
 
 

501. The photosynthetic protists are:

 
 
 
 

502. Ergot of rye is caused by:

 
 
 
 

503. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

505. To which country Antony van Leeuwenhoek belong?

 
 
 
 

506. Which of the following is true for Selaginella?

 
 
 
 

507. Which of the following are included in Tracheophyta?

 
 
 
 

508. The coralloid roots are :

 
 
 
 

509. Lichens are ecologically important because :

 
 
 
 

510. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

517. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

519. Mucilaginous canals in Cycas are found in :

 
 
 
 

520. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. The chromosomal number in:

 
 
 
 

527. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

529. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. Maximum diversity of life forms occurs in :

 
 
 
 

534. In Cycas:

 
 
 
 

535. TMV was isolated in crystalline form by:

 
 
 
 

536. Desired type of Cycas can be grown by:

 
 
 
 

537. Who discovered heterothallism in fungi?

 
 
 
 

538. Select the wrong statement:

 
 
 
 

539. The two conjugating gametangia of Rhizopus are:

 
 
 
 

540. The lichens growing on rocks are called :

 
 
 
 

541. What is absent in Deuteromycetes?

 
 
 
 

542. Which among the following is a shrub?

 
 
 
 

543. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

545. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

548. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. Plasmids are:

 
 
 
 

552. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Reserve food in Euglena is:

 
 
 
 

558. 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?

 
 
 
 

559. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

560. Anoxygenic photosynthesis occurs in:

 
 
 
 

561. Facultative saprophyte is:

 
 
 
 

562. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

564. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

565. Penicillin is obtained from:

 
 
 
 

566. The megasporangium of Selaginella is:

 
 
 
 

567. The teeth of peristome of Funaria are :

 
 
 
 

568. The source of litmus is :

 
 
 
 

569. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

571. The prothallus of fern is:

 
 
 
 

572. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

574. Which of the following have a prokaryotic cell?

 
 
 
 

575. Protozoans are considered animals because these are:

 
 
 
 

576. Redness of red sea is due to :

 
 
 
 

577. Ethylene oxide is widely used to:

 
 
 
 

578. Linnaeus is credited with introducing:

 
 
 
 

579. Club moss and Peat moss belong to:

 
 
 
 

580. The development of Selaginella embryo is:

 
 
 
 

581. Among the algae kelps are :

 
 
 
 

582. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

584. In moss, reduction division occurs in :

 
 
 
 

585. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

590. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

592. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

600. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

603. The chloroplast of Chlamydomonas are:

 
 
 
 

604. Why is Cycas called a living fossil?

 
 
 
 

605. Little leaf disease of Brinjal is caused by:

 
 
 
 

606. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

608. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

610. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

612. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

613. The orders generally have the uniform endings:

 
 
 
 

614. The plants of Funaria grow :

 
 
 
 

615. Which of the following lichens is harmful?

 
 
 
 

616. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

618. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

620. Detailed study of bacteriophage was made by:

 
 
 
 

621. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

623. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

625. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

627. The sporangium of fern contains nearly:

 
 
 
 

628.

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

 
 
 
 

630. Halophiles are the bacteria that require for growth:

 
 
 
 

631. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Pasteurized milk is:

 
 
 
 

635. Bacteria are placed under:

 
 
 
 

636. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

638. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

640. Ectocarpus produces:

 
 
 
 

641. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

644. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

646. Choose the correct statement about Spirogyra:

 
 
 
 

647. Botulinum toxin effects:

 
 
 
 

648. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. Siphonogamy is found in:

 
 
 
 

652. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

654. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

656. Fern plants are:

 
 
 
 

657. Synzoospore is produced in:

 
 
 
 

658. The Rhizopus gametes are formed in:

 
 
 
 

659. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

661. Smut of maize is caused by :

 
 
 
 

662. Etiology includes the study of :

 
 
 
 

663. Which is not found in bacteria?

 
 
 
 

664. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

666. Lichens are the indicator of pollution :

 
 
 
 

667. The sporangiophores in Rhizopus are:

 
 
 
 

668. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671.

672. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

674. Which causes red tide?

 
 
 
 

675. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

677. John Hutchinson divided dicots into two divisions:

 
 
 
 

678. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. Which is the nuclear material in bacteria?

 
 
 
 

682. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

684. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

686. In moss, sporophyte is formed on:

 
 
 
 

687. All protozoans possess:

 
 
 
 

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

 
 
 
 

689. Male gametophyte of Selaginella is found:

 
 
 
 

690. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Embryo formation is not known in :

 
 
 
 

696. Where does meiosis occur in yeast?

 
 
 
 

697.

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

 
 
 
 

699. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. White rust of crucifers is caused by:

 
 
 
 

703. Antibiotics cure the disease by:

 
 
 
 

704. Facultative parasite is:

 
 
 
 

705. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

706. Pollination drop is:

 
 
 
 

707. E coli is a:

 
 
 
 

708. Rhizophore of Selaginella is:

 
 
 
 

709. The tallest moss in the world is :

 
 
 
 

710. Funaria are commonly found :

 
 
 
 

711. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

713. Mycoplasma was discovered by:

 
 
 
 

714. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

716. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

719. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

721. . Tapetum develops in:

 
 
 
 

722. In Funaria, calyptra is derived from :

 
 
 
 

723. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

725. Iodine is obtained from:

 
 
 
 

726. The chloroplast in Ulothrix is :

 
 
 
 

727. Germination of the seed of Pinus is :

 
 
 
 

728. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Placenta in fern is:

 
 
 
 

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

 
 
 
 

733. Bacteria were first discovered by:

 
 
 
 

734. What are plasmids?

 
 
 
 

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

 
 
 
 

736. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

738. Methanogens belong to:

 
 
 
 

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

 
 
 
 

740. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

743. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

745. Enteric bacteria are those bacteria that live:

 
 
 
 

746. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

748. The fungi used as food are:

 
 
 
 

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

 
 
 
 

750. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

752. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

754. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

756. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

758. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

763. Fern prothallus produces:

 
 
 
 

764. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

766. 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:

 
 
 
 

767. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

769. Saccharomyces is well known for:

 
 
 
 

770. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

772. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

774. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

777. Bryophyta have a special character from other plants:

 
 
 
 

778. 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:

 
 
 
 

779. Ovules are not found enclosed in ovary of:

 
 
 
 

780. Viruses have:

 
 
 
 

781. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

783. Who named prion?

 
 
 
 

784. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

803. Woody climbers are known as :

 
 
 
 

804. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Some diseases caused by bacteria are:

 
 
 
 

808. Rhizopus and yeast are usually:

 
 
 
 

809. Cycas is :

 
 
 
 

810. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

818. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

822. Nannandria are:

 
 
 
 

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

 
 
 
 

824. NBG of Lucknow is now named as:

 
 
 
 

825. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

827. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

832. Leprosy is caused by:

 
 
 
 

833. Reproduction in Cycas takes place by :

 
 
 
 

834. Common phycobiont in a lichen is :

 
 
 
 

835. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

837. Gram stain is used to:

 
 
 
 

838. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

844. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

846. Which one of the following is a monocot?

 
 
 
 

847. What is streptomycin?

 
 
 
 

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

 
 
 
 

849. In angiosperms double fertilization represents:

 
 
 
 

850. Fruits are not found in :

 
 
 
 

851. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

853. In moss, stomata are found:

 
 
 
 

854. Penicillin was discovered by:

 
 
 
 

855. In Cycas microsporangia are borne on:

 
 
 
 

856. The sori in Dryopteris are found on:

 
 
 
 

857. Usually, bacteria reproduce by:

 
 
 
 

858. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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