Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

5. Ectocarpus produces:

 
 
 
 

6. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

8. The tree fern is:

 
 
 
 

9. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Multicellular and jacketed sex organs are found in :

 
 
 
 

14. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

16. Genetic material of TMV is:

 
 
 
 

17. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Polystelic condition is found in:

 
 
 
 

21. The mode of nutrition of bacteria is usually:

 
 
 
 

22. The megaspore of Selaginella on germination produces:

 
 
 
 

23. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

29. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

35. Chemosynthetic bacteria are:

 
 
 
 

36. Rhizopus belongs to:

 
 
 
 

37. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Black rust of wheat is caused by:

 
 
 
 

41. The Rhizopus gametes are formed in:

 
 
 
 

42. The zoospores of Ulothrix are :

 
 
 
 

43. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Lichens are ecologically important because :

 
 
 
 

48. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

50. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

52. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

54. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

56. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Soil fertility is lost by the activities of:

 
 
 
 

61. Male gametophyte of Selaginella is found:

 
 
 
 

62. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

64. Cycas is different from mango in :

 
 
 
 

65. Bacteria differ from viruses in being sensitive to:

 
 
 
 

66. Ergot is obtained from :

 
 
 
 

67. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

69. Iodine is obtained from:

 
 
 
 

70. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

72. How a fern differs from a moss?

 
 
 
 

73. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

75. Disease resistant plant varieties can be produced by :

 
 
 
 

76. Cellular slime mold is:

 
 
 
 

77. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

79. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

81. In binomial system most of the words are:

 
 
 
 

82. Longest known virus is:

 
 
 
 

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

 
 
 
 

84. Which of the following statements is not correct?

 
 
 
 

85. Where does meiosis occur in yeast?

 
 
 
 

86. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

88. Which is not true for Escherichia coli?

 
 
 
 

89. Endemic plants are characterised by their:

 
 
 
 

90. The order generally ends with:

 
 
 
 

91. Most primitive embryophytes are placed in:

 
 
 
 

92. The upper region of moss capsule is :

 
 
 
 

93. Pseudomycelium is found in:

 
 
 
 

94. Club moss is the common name of :

 
 
 
 

95. Placenta in fern is:

 
 
 
 

96. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

98. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

100. The leaf of Cycas shows:

 
 
 
 

101. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. The Rhizopus is:

 
 
 
 

106. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

111. Which one of the following statement is wrong?

 
 
 
 

112. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

114. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

116. Acetobacter is useful in:

 
 
 
 

117. Germination of the seed of Pinus is :

 
 
 
 

118. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

123. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. The archegonia of Selaginella are differentiated by:

 
 
 
 

127. LSD is:

 
 
 
 

128. The chromosomal number in:

 
 
 
 

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

 
 
 
 

130.

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

 
 
 
 

132. Lichens are the indicator of pollution :

 
 
 
 

133. Facultative saprophyte is:

 
 
 
 

134. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. The vascular bundles of Cycas stem are :

 
 
 
 

140. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

148. . Tapetum develops in:

 
 
 
 

149. Mycoplasma contains:

 
 
 
 

150. The alga, Spirogyra are found in :

 
 
 
 

151. Cycas revoluta is widely grown as :

 
 
 
 

152. In moss, sporophyte is formed on:

 
 
 
 

153. Pollination drop is:

 
 
 
 

154. In moss, conducting tissue is made up of

 
 
 
 

155. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

157. The similarity between cyanobacteria and bacteria:

 
 
 
 

158. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

160. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

163. Lichen show :

 
 
 
 

164. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

172. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

174. Ginkgo biloba is a:

 
 
 
 

175. What is a vector?

 
 
 
 

176. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

179. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

181. The megasporangium of Selaginella is:

 
 
 
 

182. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

183. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

185. Mucilaginous canals in Cycas are found in :

 
 
 
 

186. Red rot of sugarcane is caused by :

 
 
 
 

187. Plasmids are:

 
 
 
 

188. Red rot of sugarcane is caused by:

 
 
 
 

189. Mycoplasma is different from bacteria due to:

 
 
 
 

190. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

195. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

204. Facultative parasite is:

 
 
 
 

205. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

207. In moss, sporogenous tissue arises from:

 
 
 
 

208. Streptomyces falls under:

 
 
 
 

209. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

211. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. 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:

 
 
 
 

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

 
 
 
 

218. Protistan algae obtain their food as:

 
 
 
 

219. Winged pollen grains are found in :

 
 
 
 

220. Which is a redwood tree?

 
 
 
 

221. What is streptomycin?

 
 
 
 

222. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

224. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

226.

 

227. Pinus microsporophyll bears:

 
 
 
 

228. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

230. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

236. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

242. The most primitive vascular plants is:

 
 
 
 

243. Cleavage polyembryony is found in :

 
 
 
 

244. Cocci types of bacteria are:

 
 
 
 

245. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

250. Ovules are not found enclosed in ovary of:

 
 
 
 

251. Isomorphic type alternation of generation is found in:

 
 
 
 

252. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. In angiosperms double fertilization represents:

 
 
 
 

260. Fern prothallus is:

 
 
 
 

261. Bivalved siliceous shell or frustule occur in:

 
 
 
 

262. Most resistant spore in bacteria is:

 
 
 
 

263. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. Cycas plant in appearance resembles :

 
 
 
 

268. The lambda phase is a:

 
 
 
 

269. 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?

 
 
 
 

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

 
 
 
 

271. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

273. Vascular cryptogam is the term used for :

 
 
 
 

274. Saccharomyces is well known for:

 
 
 
 

275. Which of the following have a prokaryotic cell?

 
 
 
 

276. Fruits are not found in :

 
 
 
 

277. Vascular cryptogams is the term used for:

 
 
 
 

278. True sexuality is not found in:

 
 
 
 

279. Enteric bacteria are those bacteria that live:

 
 
 
 

280. Rhizopus and yeast are usually:

 
 
 
 

281. Protozoans are considered animals because these are:

 
 
 
 

282. Lichens are indicators of :

 
 
 
 

283. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

284. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

293. Bacteria are found everywhere, except:

 
 
 
 

294. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

296. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

300. Viruses are commonly transmitted in plants through:

 
 
 
 

301. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

303. Seeds are characteristically found in :

 
 
 
 

304. Spores of which plants have chloroplast:

 
 
 
 

305. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Club moss and Peat moss belong to:

 
 
 
 

309. Bryophyta have been placed in cryptogams because:

 
 
 
 

310. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. Asexual reproductive body of Volvox is called:

 
 
 
 

314. The fungi are mostly:

 
 
 
 

315. Lichens are pioneers of vegetation in a :

 
 
 
 

316. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Cryptogams include :

 
 
 
 

326. The leaves of Funaria are :

 
 
 
 

327. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

329. The ferns are usually found:

 
 
 
 

330. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

332. Smallpox is caused by:

 
 
 
 

333. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

334. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

336. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Which is an edible fungus?

 
 
 
 

343. Cyanophage is a virus that attacks:

 
 
 
 

344. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

346. Bacteriophage consists of:

 
 
 
 

347. Kuru, a human disease is caused by:

 
 
 
 

348. Fern plants are:

 
 
 
 

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

 
 
 
 

350. Gametophyte is the main plant body in :

 
 
 
 

351. All archaebacteria lack:

 
 
 
 

352. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

354. Red rot of sugarcane is caused by :

 
 
 
 

355. Desired type of Cycas can be grown by:

 
 
 
 

356. In Funaria, calyptra is derived from :

 
 
 
 

357. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

358. Synzoospore is produced in:

 
 
 
 

359. The plants of Funaria grow :

 
 
 
 

360. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

366. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

368. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Funaria is :

 
 
 
 

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

 
 
 
 

373. Protists which are diploid reproduce sexually by:

 
 
 
 

374. Which is the correct statement about Selaginella?

 
 
 
 

375. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

377. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

379. Gymnosperms could also be called as:

 
 
 
 

380. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

386. Liverworts are included in :

 
 
 
 

387. Cycas is:

 
 
 
 

388. The spermatozoids of Cycas are :

 
 
 
 

389. 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?

 
 
 
 

390. Sleeping sickness disease in man is caused by:

 
 
 
 

391. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. Gram stain is used to:

 
 
 
 

396. The sexual reproductive organs in Rhizopus are:

 
 
 
 

397. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

399. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

401. Meristele of fern is:

 
 
 
 

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

 
 
 
 

403. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

405. The sporophyte of Riccia is represented by :

 
 
 
 

406. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

408. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

410. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Which of the following is a parasitic algae?

 
 
 
 

414. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

416. Simple polyembryony is found in :

 
 
 
 

417. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427. The largest alga is:

 
 
 
 

428. Downy mildew disease is caused by :

 
 
 
 

429. Who discovered heterothallism in fungi?

 
 
 
 

430. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

432. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

434. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. The two conjugating gametangia of Rhizopus are:

 
 
 
 

439. Heterocysts are found in :

 
 
 
 

440. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

442. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

444. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

445. How is moss different from fern?

 
 
 
 

446. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

448. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Iodine is obtained from :

 
 
 
 

452. Streptomycin is obtained from:

 
 
 
 

453. The truncated cone of HIV consists of:

 
 
 
 

454. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Ergot of rye is caused by:

 
 
 
 

462. Late blight of potato is caused by:

 
 
 
 

463. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Majority of lichens are :

 
 
 
 

467. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

469. Metulae are found in:

 
 
 
 

470. The chloroplast in Ulothrix is :

 
 
 
 

471. The ascus of yeast contains:

 
 
 
 

472.

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

 
 
 
 

474. The male gametes of Pinus are :

 
 
 
 

475. In Gymnocarpeae the fruiting body is :

 
 
 
 

476. Rhizophore of Selaginella is:

 
 
 
 

477. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

479. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

480. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. The chloroplast of Chlamydomonas are:

 
 
 
 

485. Chief constituents of bordeaux mixture are :

 
 
 
 

486. In moss, calyptra is formed from:

 
 
 
 

487. Heterospory and ligulate leaves are a feature of:

 
 
 
 

488. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

490. Black rust of wheat is caused by:

 
 
 
 

491. Pasteurized milk is:

 
 
 
 

492. Which of the following are included in Tracheophyta?

 
 
 
 

493. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

495. 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:

 
 
 
 

496. In Cycas:

 
 
 
 

497. The genetic material of poxvirus is:

 
 
 
 

498. Ovary is absent in :

 
 
 
 

499. What is mycorrhiza?

 
 
 
 

500. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

502. Discovery of penicillin was based on:

 
 
 
 

503. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Which is absent from the xylem of Cycas?

 
 
 
 

507. The sporangiophores in Rhizopus are:

 
 
 
 

508. The source of litmus is :

 
 
 
 

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

 
 
 
 

510. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

512. Which is a tautonym?

 
 
 
 

513. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

515. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

518. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

524. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

526. What are Cyanobacteria?

 
 
 
 

527. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

529. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. Tautonyms are illegitimate in:

 
 
 
 

534. The seedless plants which possess vascular tissues are:

 
 
 
 

535. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

537. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

539. Diphtheria is caused by:

 
 
 
 

540. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

542. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. Early blight of potato is caused by:

 
 
 
 

546. Clostridium can:

 
 
 
 

547. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

549. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Yeast grows more rapidly in:

 
 
 
 

557. Green plants are classified as :

 
 
 
 

558. Interferon is a:

 
 
 
 

559. TMV was isolated in crystalline form by:

 
 
 
 

560. E coli is a:

 
 
 
 

561. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. Some bacteria cannot be killed easily because of:

 
 
 
 

565. Siphonogamy is found in:

 
 
 
 

566. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

568. The gametophyte of fern bears:

 
 
 
 

569. Economic importance of bacteria lies in their being:

 
 
 
 

570. Which of the following are absent in Mycoplasma?

 
 
 
 

571. The coralloid roots are :

 
 
 
 

572. The nucleus of bacteria is:

 
 
 
 

573. Which is a fungicide?

 
 
 
 

574. The fungi are usually:

 
 
 
 

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

 
 
 
 

576. The sporophyte of Riccia is :

 
 
 
 

577. Which of the following are included in Tracheophyta?

 
 
 
 

578. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

580. Agar-agar is obtained from:

 
 
 
 

581. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Photosynthetic protists belong to:

 
 
 
 

590. The zygospore in Rhizopus on germination forms:

 
 
 
 

591. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Who discovered cyanophages?

 
 
 
 

595. The spur of Pinus roxburghii has :

 
 
 
 

596. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. John Hutchinson divided dicots into two divisions:

 
 
 
 

600. Most of the lichens are composed of :

 
 
 
 

601. Heterotrichous habit means :

 
 
 
 

602. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

604. Male gametes in Dryopteris are:

 
 
 
 

605. The chief characteristic of bryophyta is that :

 
 
 
 

606. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Funaria can be differentiated from Cycas :

 
 
 
 

612. The fungi used as food are:

 
 
 
 

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

 
 
 
 

614. Ovules are not found enclosed in ovary in :

 
 
 
 

615. In Pteris, the archegonia are present:

 
 
 
 

616. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. Embryophyta includes:

 
 
 
 

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

 
 
 
 

622. Water-net is the name of:

 
 
 
 

623. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. What are plasmids?

 
 
 
 

630. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

632. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. Choose the correct statement about Spirogyra:

 
 
 
 

637. In moss, reduction division occurs in :

 
 
 
 

638. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

641. Etiology includes the study of :

 
 
 
 

642. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

646. Methanogens belong to:

 
 
 
 

647. Vascular tissue is found in :

 
 
 
 

648. Pteridophyta are also called:

 
 
 
 

649. Black rust of wheat is caused by:

 
 
 
 

650. Circular DNA is seen in:

 
 
 
 

651.

652. Which condition is found in Cycas?

 
 
 
 

653. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. Which of the following is true for Selaginella?

 
 
 
 

658. Viroids have:

 
 
 
 

659. The disease apple scab is caused by:

 
 
 
 

660. The central part of Funaria axis is :

 
 
 
 

661. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

670. Detailed study of bacteriophage was made by:

 
 
 
 

671. First animal pathogenic virus was discovered by:

 
 
 
 

672. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

674. Botulism is a:

 
 
 
 

675. Selaginella differs from Moss in having:

 
 
 
 

676. Embryo formation is not known in :

 
 
 
 

677. Pteridophytes are also known as :

 
 
 
 

678. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

680. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

682. What is the role of nitrifying bacteria?

 
 
 
 

683. Reserve food in Euglena is:

 
 
 
 

684. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

690. Pythium debaryanum is the causative agent of:

 
 
 
 

691. Nannandria are:

 
 
 
 

692. Woody climbers are known as :

 
 
 
 

693. A gill of Agaricus:

 
 
 
 

694. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

696. In a diplontic life cycle:

 
 
 
 

697. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

699. Infective part of virus was discovered by:

 
 
 
 

700. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

702. Acellular slime mold is/are:

 
 
 
 

703. Bacteria are considered to be plants because they:

 
 
 
 

704. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

705. Indusium in Dryopteris is:

 
 
 
 

706. An alga which is rich in proteins:

 
 
 
 

707. Cycas is :

 
 
 
 

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

 
 
 
 

709. In Herpes virus DNA is:

 
 
 
 

710. The term stele was given by:

 
 
 
 

711. Who among the following discovered virus?

 
 
 
 

712. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

714. 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:

 
 
 
 

715. Amoeba is a member of the phylum:

 
 
 
 

716. Pasteurization of milk involves heating for:

 
 
 
 

717. Which of the following is true for viruses?

 
 
 
 

718. Oswald Tippo’s classification was based on :

 
 
 
 

719. The teeth of peristome of Funaria are :

 
 
 
 

720. Funaria is :

 
 
 
 

721. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Germ theory of disease was proposed by:

 
 
 
 

725. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

727. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

733. Which fixes atmospheric nitrogen?

 
 
 
 

734. Pinus is:

 
 
 
 

735. In moss, stomata are found:

 
 
 
 

736. Rhizoids of Riccia are :

 
 
 
 

737. The role of meiosis is for:

 
 
 
 

738. Milk is converted to curd by:

 
 
 
 

739. Sexual reproduction of lichen is due to :

 
 
 
 

740. The antibiotic is obtained from:

 
 
 
 

741. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Leprosy is caused by:

 
 
 
 

746. The sporangium of fern contains nearly:

 
 
 
 

747. The middle sterile part of capsule is called:

 
 
 
 

748. Virion refers to:

 
 
 
 

749. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

750. The largest known bacterium is:

 
 
 
 

751. Climbers are found in genus:

 
 
 
 

752. Pollination in Cycas takes place by :

 
 
 
 

753. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

755. All protozoans possess:

 
 
 
 

756. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

758. Bacteriophages have been used as:

 
 
 
 

759. The fern plant is:

 
 
 
 

760. Funaria are commonly found :

 
 
 
 

761. Select the wrong statement:

 
 
 
 

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

 
 
 
 

763. In tracheophyta:

 
 
 
 

764. Which organisms are the oldest life forms?

 
 
 
 

765. The leafy fern plant represents the:

 
 
 
 

766. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. Which is an exception to cell theory?

 
 
 
 

770. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

772. Which of the following is a heterosporous pteridophyte?

 
 
 
 

773. Lichens show :

 
 
 
 

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

 
 
 
 

775. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

777. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. Penicillin was discovered by:

 
 
 
 

784. Fern phloem lacks:

 
 
 
 

785. Viruses have:

 
 
 
 

786. The gametophyte of fern is as:

 
 
 
 

787. Among the algae kelps are :

 
 
 
 

788. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

790. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Why is Cycas called a living fossil?

 
 
 
 

798. Which of the following have algal zone?

 
 
 
 

799. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Which of the following statement is correct?

 
 
 
 

803. Pneumonia is caused by:

 
 
 
 

804. Which lichen is called Reindeer moss?

 
 
 
 

805. The sporangia of Selaginella are attached:

 
 
 
 

806. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

808. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

810. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

812. Spirogyra differs from moss protonema in having :

 
 
 
 

813. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

815. Absorptive nutrition is:

 
 
 
 

816. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

819. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

821. 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?

 
 
 
 

822. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

827. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

828. Mycoplasma are:

 
 
 
 

829. 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:

 
 
 
 

830. 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:

 
 
 
 

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

 
 
 
 

832. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

834. Roots are absent in :

 
 
 
 

835. Yeast is a source of:

 
 
 
 

836. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

838. Azolla and Salvinia both are:

 
 
 
 

839. The smallest bacterium is:

 
 
 
 

840. Saccharomyces ludwigii ascus produces:

 
 
 
 

841. Which of the following lichens is harmful?

 
 
 
 

842. Redness of red sea is due to :

 
 
 
 

843. The gametophyte of moss has distinct phases :

 
 
 
 

844. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

846. Select the correct statement: (NEET 2016)

 
 
 
 

847. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

849. Lichens form the first community in

 
 
 
 

850. Transfusion tissue is present in the leaflet of:

 
 
 
 

851. Sometimes the bacterial cell is enclosed in:

 
 
 
 

852. Pinus gerardiana is :

 
 
 
 

853. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

856. The flagella of Chlamydomonas are:

 
 
 
 

857. Little leaf disease of Brinjal is caused by:

 
 
 
 

858. Saccharomyces is used in:

 
 
 
 

859. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. The disease symptom necrosis refers to :

 
 
 
 

863. 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:

 
 
 
 

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