Quiz_Random

1. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. The genetic material of poxvirus is:

 
 
 
 

6. What is absent in Deuteromycetes?

 
 
 
 

7. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

9. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Vegetative reproduction in Cycas is by means of :

 
 
 
 

13. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

14. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

16. Among the algae kelps are :

 
 
 
 

17. First animal pathogenic virus was discovered by:

 
 
 
 

18. In Pteris, the roots are:

 
 
 
 

19. Ethylene oxide is widely used to:

 
 
 
 

20. Aflatoxin is produced as a product in :

 
 
 
 

21. 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?

 
 
 
 

22. In Cycas microsporangia are borne on:

 
 
 
 

23. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

28. The ferns are usually found:

 
 
 
 

29. Heterotrichous habit means :

 
 
 
 

30. To which country Antony van Leeuwenhoek belong?

 
 
 
 

31. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

33. Which is a redwood tree?

 
 
 
 

34. Pinus gerardiana is :

 
 
 
 

35. Sometimes the bacterial cell is enclosed in:

 
 
 
 

36. One of the distinctive feature of Spirogyra is :

 
 
 
 

37. Funaria is :

 
 
 
 

38. Iodine is obtained from :

 
 
 
 

39. Heterospory is the production of:

 
 
 
 

40. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

42. Lichens reproduce by :

 
 
 
 

43. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

45. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

47. Pinus is:

 
 
 
 

48. Late blight of potato is caused by :

 
 
 
 

49. The term stele was given by:

 
 
 
 

50. The disease symptom necrosis refers to :

 
 
 
 

51. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

53. The development of sporangium in Selaginella is:

 
 
 
 

54. Pollination in Pinus is :

 
 
 
 

55. Most primitive embryophytes are placed in :

 
 
 
 

56. Wine turns sour because of:

 
 
 
 

57. Cocci types of bacteria are:

 
 
 
 

58. Red rot of sugarcane is caused by :

 
 
 
 

59. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. The spermatozoids of Cycas are :

 
 
 
 

63. Asexual reproductive body of Volvox is called:

 
 
 
 

64. Water bloom is generally caused by :

 
 
 
 

65. What is mycorrhiza?

 
 
 
 

66. Lichens form the first community in

 
 
 
 

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

 
 
 
 

68. Chief constituents of bordeaux mixture are :

 
 
 
 

69. The tree fern is:

 
 
 
 

70. Funaria can be differentiated from Cycas :

 
 
 
 

71. Yeast belongs to class:

 
 
 
 

72. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

74. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

76. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. The two conjugating gametangia of Rhizopus are:

 
 
 
 

81. Germ theory of disease was proposed by:

 
 
 
 

82. The most primitive vascular plants is:

 
 
 
 

83. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

85. Ectocarpus produces:

 
 
 
 

86. Cycas plant in appearance resembles :

 
 
 
 

87. Which of the following shows heterotrichous habit?

 
 
 
 

88. Which of the following have algal zone?

 
 
 
 

89. Mycoplasma is different from bacteria due to:

 
 
 
 

90. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Centric discoid form of diatom is:

 
 
 
 

94. Circular DNA is seen in:

 
 
 
 

95. The roots of Cycas are :

 
 
 
 

96. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

97. Some diseases caused by bacteria are:

 
 
 
 

98. The fungi that grow on wood are called:

 
 
 
 

99. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Climbers are found in genus:

 
 
 
 

108. The antibiotic is obtained from:

 
 
 
 

109. LSD is:

 
 
 
 

110. Spirogyra differs from moss protonema in having :

 
 
 
 

111. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Placenta in fern is:

 
 
 
 

119. In moss, reduction division occurs in :

 
 
 
 

120. Roots are absent in :

 
 
 
 

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

 
 
 
 

122. 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:

 
 
 
 

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

 
 
 
 

124. Ovary is absent in:

 
 
 
 

125. Reproduction in Rhizopus is:

 
 
 
 

126. The similarity between cyanobacteria and bacteria:

 
 
 
 

127. Most primitive kind of flower is represented by:

 
 
 
 

128. Synzoospore is produced in:

 
 
 
 

129.

 

130. Sporophyte of Funaria is :

 
 
 
 

131. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

133. Which bacteria convert nitrate into nitrogen?

 
 
 
 

134. The mycelium of Rhizopus is:

 
 
 
 

135. Detailed study of bacteriophage was made by:

 
 
 
 

136. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

138. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

145. The middle sterile part of capsule is called:

 
 
 
 

146. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Male gametes in Dryopteris are:

 
 
 
 

150. The chief characteristic of class Ascomycetes is:

 
 
 
 

151. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Cap cells are found in the filament of:

 
 
 
 

155. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

157. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

159. Pasteur is famous for his:

 
 
 
 

160. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

163. Black rust of wheat is caused by:

 
 
 
 

164. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

166. Little leaf disease of Brinjal is caused by:

 
 
 
 

167. 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:

 
 
 
 

168. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

170. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

172. Nannandria are:

 
 
 
 

173. Mycoplasmas are not viruses in nature because:

 
 
 
 

174. Which is an exception to cell theory?

 
 
 
 

175. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

177. Smallpox is caused by:

 
 
 
 

178. Heterospory and ligulate leaves are a feature of:

 
 
 
 

179. Cycas revoluta is widely grown as :

 
 
 
 

180. All archaebacteria lack:

 
 
 
 

181. Who discovered cyanophages?

 
 
 
 

182. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

184. Protists which are diploid reproduce sexually by:

 
 
 
 

185. Liverworts are included in :

 
 
 
 

186. What is streptomycin?

 
 
 
 

187. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

191. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

193. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. The leaves of Funaria are :

 
 
 
 

197. Selaginella differs from Moss in having:

 
 
 
 

198. Virion refers to:

 
 
 
 

199. The most important property of yeast is:

 
 
 
 

200. The tallest moss in the world is :

 
 
 
 

201. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

203. Bacteria differ from viruses in being sensitive to:

 
 
 
 

204. Bacteria which are spherical are called:

 
 
 
 

205. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

207. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

209. The sexual reproductive organs in Rhizopus are:

 
 
 
 

210. The largest alga is:

 
 
 
 

211. Which one of the following is a monocot?

 
 
 
 

212. NBG of Lucknow is now named as:

 
 
 
 

213. Bentham and Hooker placed gymnosperms:

 
 
 
 

214. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

219. Ovary is absent in :

 
 
 
 

220. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Cyathia is characterized by:

 
 
 
 

224. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

226. What are plasmids?

 
 
 
 

227. Common phycobiont in a lichen is :

 
 
 
 

228. Nitrogen-fixing bacteria may be located:

 
 
 
 

229. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

240. In dinoflagellates, the two flagella are:

 
 
 
 

241. Cell walls of Gram-positive bacteria contain:

 
 
 
 

242. Some biologists have used the term Mycetozoa for:

 
 
 
 

243. Select the correct statement: (NEET 2016)

 
 
 
 

244. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

246. Most primitive group of vascular plants are:

 
 
 
 

247. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

249. Citrus canker is caused by :

 
 
 
 

250. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. The spur of Pinus roxburghii has :

 
 
 
 

254. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

255. Mycoplasma are:

 
 
 
 

256. The seedless plants which possess vascular tissues are:

 
 
 
 

257. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

259. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Red rot of sugarcane is caused by :

 
 
 
 

266. Agar-agar is obtained from:

 
 
 
 

267. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

268. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Iodine is obtained from:

 
 
 
 

272. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

274. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

279. Methanogens belong to:

 
 
 
 

280. The phloem of vascular system of Cycas is :

 
 
 
 

281. Clostridium can:

 
 
 
 

282. The gametophyte of fern is as:

 
 
 
 

283. The sporophyte of Riccia is :

 
 
 
 

284. In moss, calyptra is formed from:

 
 
 
 

285. Water-borne bacterial diseases are:

 
 
 
 

286. Acetobacter is useful in:

 
 
 
 

287. Spores of which plants have chloroplast:

 
 
 
 

288. The chloroplast in Ulothrix is :

 
 
 
 

289. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

291. Desired type of Cycas can be grown by:

 
 
 
 

292. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

294. Rhizophore of Selaginella is:

 
 
 
 

295. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

297. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

303. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

305. Which is absent from the xylem of Cycas?

 
 
 
 

306. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

308. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

310. The rhizoids of Funaria are :

 
 
 
 

311. How a fern differs from a moss?

 
 
 
 

312. Multicellular and jacketed sex organs are found in :

 
 
 
 

313. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

316. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

318. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. What are Cyanobacteria?

 
 
 
 

322. Absorptive nutrition is:

 
 
 
 

323. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

325. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

331. An alga which is rich in proteins:

 
 
 
 

332. Each chloroplast in Spirogyra bears :

 
 
 
 

333. Penicillin was discovered by:

 
 
 
 

334. Cycas is :

 
 
 
 

335. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

341. What is the role of nitrifying bacteria?

 
 
 
 

342. Photosynthetic bacteria have:

 
 
 
 

343. Leprosy is caused by:

 
 
 
 

344. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. Metulae are found in:

 
 
 
 

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

 
 
 
 

351. The sporophyte of Riccia is represented by :

 
 
 
 

352. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. Downy mildew disease is caused by :

 
 
 
 

356. Antibiotic has been extracted from :

 
 
 
 

357. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Which condition is found in Cycas?

 
 
 
 

366. Lichens reproduce by :

 
 
 
 

367. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

369. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Disease resistant plant varieties can be produced by :

 
 
 
 

379. Which of the following is true for Selaginella?

 
 
 
 

380. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

382. Which of the following is true for viruses?

 
 
 
 

383. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. Sexual reproduction of lichen is due to :

 
 
 
 

390. Rhizoids of Riccia are :

 
 
 
 

391. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

393. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

394. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

399. What is special feature of fern archegonia?

 
 
 
 

400. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

402. The disease apple scab is caused by:

 
 
 
 

403. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

405. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

410. The fungi used as food are:

 
 
 
 

411. The fern plant is:

 
 
 
 

412. Seeds are characteristically found in :

 
 
 
 

413. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

420. Saccharomyces is well known for:

 
 
 
 

421. The flagella of Chlamydomonas are:

 
 
 
 

422. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

423.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. The central part of Funaria axis is :

 
 
 
 

430. In moss, sporophyte is formed on:

 
 
 
 

431. Lichen show :

 
 
 
 

432. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. Helotism word is used for the symbiosis between :

 
 
 
 

436. Halophiles are the bacteria that require for growth:

 
 
 
 

437. In angiosperms double fertilization represents:

 
 
 
 

438. Pneumonia is caused by:

 
 
 
 

439. Meiosis in Ulothrix takes place:

 
 
 
 

440. The upper region of moss capsule is :

 
 
 
 

441. Who discovered streptomycin?

 
 
 
 

442. 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:

 
 
 
 

443. Indusium in Dryopteris is:

 
 
 
 

444. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

446. Oswald Tippo’s classification is:

 
 
 
 

447. Funaria are commonly found :

 
 
 
 

448. Bacteria were first discovered by:

 
 
 
 

449. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

450. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Which is the nuclear material in bacteria?

 
 
 
 

455. Green plants are classified as :

 
 
 
 

456. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

461. The microsporophylls on the cone of Cycas are :

 
 
 
 

462. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

464. Small epidermal swellings due to infection are called :

 
 
 
 

465. The sori in Dryopteris are found on:

 
 
 
 

466. In moss, stomata are found:

 
 
 
 

467. Which is a fungicide?

 
 
 
 

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

 
 
 
 

469. Funaria is :

 
 
 
 

470. Botulism is a:

 
 
 
 

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

 
 
 
 

472. The megasporangium of Selaginella is:

 
 
 
 

473. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

475. The gametophyte of moss has distinct phases :

 
 
 
 

476. The Rhizopus gametes are formed in:

 
 
 
 

477. The largest known bacterium is:

 
 
 
 

478. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

480. Ulothrix produces :

 
 
 
 

481. In Gymnocarpeae the fruiting body is :

 
 
 
 

482. John Hutchinson divided dicots into two divisions:

 
 
 
 

483. Kuru, a human disease is caused by:

 
 
 
 

484. Which is a tautonym?

 
 
 
 

485. Which class of Protozoa includes all parasitic forms?

 
 
 
 

486. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. The photosynthetic protists are:

 
 
 
 

494. Bryophyta have a special character from other plants:

 
 
 
 

495. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

497. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Zoogametes are not found in:

 
 
 
 

501. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

505. All protozoans possess:

 
 
 
 

506. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

507. Spermatophyta are characterized by producing:

 
 
 
 

508. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

510. Transfusion tissue is present in the leaflet of:

 
 
 
 

511. Leaf spot of groundnut is caused by :

 
 
 
 

512. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Pollination in Cycas takes place by :

 
 
 
 

525. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

527. Penicillin is obtained from:

 
 
 
 

528. Bivalved siliceous shell or frustule occur in:

 
 
 
 

529. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

536. Number of capsomeres forming capsid of TMV is:

 
 
 
 

537. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

539. Which of the following applies to Selaginella?

 
 
 
 

540. Which of the following are included in Tracheophyta?

 
 
 
 

541. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

548. In Cycas the fertilization is:

 
 
 
 

549. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

551. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

553. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

558. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

560. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

562. Pasteurized milk is:

 
 
 
 

563. Broad spectrum antibiotic is, which:

 
 
 
 

564. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

569. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. Chemosynthetic bacteria are:

 
 
 
 

579. Yeast grows more rapidly in:

 
 
 
 

580. Embryophyta includes:

 
 
 
 

581. Embryophyta includes :

 
 
 
 

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

 
 
 
 

583. Yeast is a source of:

 
 
 
 

584. Meristele of fern is:

 
 
 
 

585. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

587. Which lichen is called Reindeer moss?

 
 
 
 

588. The coralloid roots are :

 
 
 
 

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

 
 
 
 

590. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. 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:

 
 
 
 

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

 
 
 
 

595. Viruses have:

 
 
 
 

596. Early blight of potato is caused by:

 
 
 
 

597. Lichens are ecologically important because :

 
 
 
 

598. Viruses are considered to be:

 
 
 
 

599. Which of the following are included in Tracheophyta?

 
 
 
 

600. Citrus canker is caused by:

 
 
 
 

601. Funaria is a Bryophyta because :

 
 
 
 

602. The chromosomal number in:

 
 
 
 

603. Cycas is:

 
 
 
 

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

 
 
 
 

605. Fern plants are:

 
 
 
 

606. Streptomyces falls under:

 
 
 
 

607. Which is a gametophytic tissue?

 
 
 
 

608. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

610. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Green plants are classified as:

 
 
 
 

614. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. Germination of the seed of Pinus is :

 
 
 
 

619. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

621. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

623. The plants of Funaria grow :

 
 
 
 

624. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

632. Select the wrong statement:

 
 
 
 

633. The order generally ends with:

 
 
 
 

634. The alga, Spirogyra are found in :

 
 
 
 

635. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

637. Bacteria are placed under:

 
 
 
 

638. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

640. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

642. The zygospore in Rhizopus on germination forms:

 
 
 
 

643. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

646. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

648. In moss, conducting tissue is made up of

 
 
 
 

649.

650. An Hfr bacterium is one that contains:

 
 
 
 

651. Polystelic condition is found in:

 
 
 
 

652. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

654.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Most of the lichens are composed of :

 
 
 
 

659. Facultative parasite is:

 
 
 
 

660. Diploxylic vascular bundles are found in:

 
 
 
 

661. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

669. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

670. Pythium debaryanum is the causative agent of:

 
 
 
 

671. Which of the following is a monocot?

 
 
 
 

672. Rice, pea, potato are :

 
 
 
 

673. Generic name of mango is:

 
 
 
 

674. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

676. In a bacteriophage, DNA is present in:

 
 
 
 

677. 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:

 
 
 
 

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

 
 
 
 

679. Ginkgo biloba is a:

 
 
 
 

680. Saccharomyces ludwigii ascus produces:

 
 
 
 

681. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

683. Streptomycin is obtained from:

 
 
 
 

684. 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:

 
 
 
 

685. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

686. The lambda phase is a:

 
 
 
 

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

 
 
 
 

688. Siphonogamy is found in:

 
 
 
 

689. Cleavage polyembryony is found in :

 
 
 
 

690. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

692. In Funaria :

 
 
 
 

693. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

695. The sporangia of Selaginella are attached:

 
 
 
 

696. 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?

 
 
 
 

697. Antibiotics cure the disease by:

 
 
 
 

698. Simple polyembryony is found in :

 
 
 
 

699. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Oswald Tippo’s classification was based on :

 
 
 
 

703. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

705. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

707. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

709. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

710. The teeth of peristome of Funaria are :

 
 
 
 

711. Cycas is different from mango in :

 
 
 
 

712. Fruits are not found in:

 
 
 
 

713. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

715. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

716. Which of the following is sago palm?

 
 
 
 

717. Select the wrong statement:

 
 
 
 

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

 
 
 
 

719. Cryptogams include :

 
 
 
 

720. Tautonyms are illegitimate in:

 
 
 
 

721. The chief characteristic of bryophyta is that :

 
 
 
 

722. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

724. Red rot of sugarcane is caused by:

 
 
 
 

725. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

727. In Pteris, the archegonia are present:

 
 
 
 

728. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Winged pollen grains are found in :

 
 
 
 

732. Longest known virus is:

 
 
 
 

733. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

735. All algae have:

 
 
 
 

736. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

741. Proembryo in Pinus is :

 
 
 
 

742. Water-net is the name of:

 
 
 
 

743. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

745. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

750. Standard size of a herbarium sheet is:

 
 
 
 

751. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

753. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

757. Bacteria are considered to be plants because they:

 
 
 
 

758. Vascular cryptogam is the term used for :

 
 
 
 

759. Fruits are not found in :

 
 
 
 

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

 
 
 
 

761. Fern prothallus produces:

 
 
 
 

762. Spirogyra represents the :

 
 
 
 

763. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Which is an edible fungus?

 
 
 
 

767. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

772. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Mixed cropping helps :

 
 
 
 

779. Lichens show :

 
 
 
 

780. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. In Cycas:

 
 
 
 

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

 
 
 
 

785. The gametophyte produced by apospory is :

 
 
 
 

786. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

788. 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?

 
 
 
 

789. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. In tracheophyta:

 
 
 
 

794. Fruiting body of lichens is :

 
 
 
 

795. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Acellular slime mold is/are:

 
 
 
 

803. Which one of the following statement is wrong?

 
 
 
 

804. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

806. Pteridophyta are also called:

 
 
 
 

807. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. The leaf of Cycas shows:

 
 
 
 

811. Some bacteria cannot be killed easily because of:

 
 
 
 

812. Which have the largest antherozoid?

 
 
 
 

813. 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?

 
 
 
 

814. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

816. Nitrifying bacteria play an important role by converting:

 
 
 
 

817. Spermatophyta are characterized by producing:

 
 
 
 

818. Coenogamete is found in:

 
 
 
 

819. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

821. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

823. Fern phloem lacks:

 
 
 
 

824. In binomial system most of the words are:

 
 
 
 

825. Facultative saprophyte is:

 
 
 
 

826. Viroids have:

 
 
 
 

827. Which among the following is a shrub?

 
 
 
 

828. The smallest unit of classification is:

 
 
 
 

829. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

841. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

842. 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:

 
 
 
 

843. Diphtheria is caused by:

 
 
 
 

844. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. In moss, peristomial teeth are:

 
 
 
 

850. Vascular tissue is found in :

 
 
 
 

851. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

856. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. The sporangium of fern contains nearly: