Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

5. Circular DNA is seen in:

 
 
 
 

6. Enzymes are absent in:

 
 
 
 

7. Fertility of the soil is increased by:

 
 
 
 

8. Which is a tautonym?

 
 
 
 

9. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

14. Smallpox is caused by:

 
 
 
 

15. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

17. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

19. Pollination in Pinus is :

 
 
 
 

20. Which is an edible fungus?

 
 
 
 

21. Which of the following is a parasitic algae?

 
 
 
 

22. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Protists which are diploid reproduce sexually by:

 
 
 
 

28. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

30. Disease resistant plant varieties can be produced by :

 
 
 
 

31. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. Winged pollen grains are found in :

 
 
 
 

35. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

37. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Mycoplasma contains:

 
 
 
 

41. The megaspore of Selaginella on germination produces:

 
 
 
 

42. Bryophyta have been placed in cryptogams because:

 
 
 
 

43. Cycas is :

 
 
 
 

44. Who discovered cyanophages?

 
 
 
 

45. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

51. Which of the following applies to Selaginella?

 
 
 
 

52. Which is a fungicide?

 
 
 
 

53. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. Mycoplasma was discovered by:

 
 
 
 

58. What is special feature of fern archegonia?

 
 
 
 

59. What are Cyanobacteria?

 
 
 
 

60. 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?

 
 
 
 

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

 
 
 
 

62. Interferon is a:

 
 
 
 

63. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

65. Liverworts are included in :

 
 
 
 

66. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

67. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

72. Pasteurized milk is:

 
 
 
 

73. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

75. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. The sexual reproductive organs in Rhizopus are:

 
 
 
 

80. Pasteur is famous for his:

 
 
 
 

81. Acellular slime mold is/are:

 
 
 
 

82. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

83. Milk is converted to curd by:

 
 
 
 

84. Redness of red sea is due to :

 
 
 
 

85. The plants of Funaria grow :

 
 
 
 

86.

 

87. Facultative parasite is:

 
 
 
 

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

 
 
 
 

89. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

91. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Streptomycin is obtained from:

 
 
 
 

95. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

97. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Polystelic condition is found in:

 
 
 
 

101. In moss, conducting tissue is made up of

 
 
 
 

102. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Nitrogen-fixing bacteria may be located:

 
 
 
 

107. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

109. Fruits are not found in:

 
 
 
 

110. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

112. 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:

 
 
 
 

113. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

115. In dinoflagellates, the two flagella are:

 
 
 
 

116. Funaria is a Bryophyta because :

 
 
 
 

117. One of the distinctive feature of Spirogyra is :

 
 
 
 

118. Red rot of sugarcane is caused by:

 
 
 
 

119. Protistan algae obtain their food as:

 
 
 
 

120. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

121. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Acetobacter is useful in:

 
 
 
 

125. Which class of Protozoa includes all parasitic forms?

 
 
 
 

126. Fruits are not found in Cycas because:

 
 
 
 

127. Lichens are the indicator of pollution :

 
 
 
 

128. Bacteria are placed under:

 
 
 
 

129. The spur of Pinus roxburghii has :

 
 
 
 

130. Plasmids are:

 
 
 
 

131. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

133. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

139. Kuru, a human disease is caused by:

 
 
 
 

140. Who among the following discovered virus?

 
 
 
 

141. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

143. Which group of algae have an incipient nucleus?

 
 
 
 

144. Meristele of fern is:

 
 
 
 

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

 
 
 
 

146. Which is a redwood tree?

 
 
 
 

147. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Cycas is:

 
 
 
 

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

 
 
 
 

153. Chemosynthetic bacteria are:

 
 
 
 

154. In angiosperms double fertilization represents:

 
 
 
 

155. In Gymnocarpeae the fruiting body is :

 
 
 
 

156. Cycas revoluta is widely grown as :

 
 
 
 

157. The fungi are mostly:

 
 
 
 

158. The coralloid roots are :

 
 
 
 

159. Which of the following is sago palm?

 
 
 
 

160. Sporophyte of fern is:

 
 
 
 

161. Embryophyta includes:

 
 
 
 

162. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Fairy ring is the name given to:

 
 
 
 

167. The largest alga is:

 
 
 
 

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

 
 
 
 

169. Male gametes in Dryopteris are:

 
 
 
 

170. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

172. Which of the following is a heterosporous pteridophyte?

 
 
 
 

173. Total parasites belong to:

 
 
 
 

174. An alga which is rich in proteins:

 
 
 
 

175. How is moss different from fern?

 
 
 
 

176. In Cycas microsporangia are borne on:

 
 
 
 

177. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

179. Rhizopus and yeast are usually:

 
 
 
 

180. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

182. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

184. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Lichens are ecologically important because :

 
 
 
 

196. The alga, Spirogyra are found in :

 
 
 
 

197. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

198. Viruses are considered to be:

 
 
 
 

199. Bacteria which are spherical are called:

 
 
 
 

200. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

202. The lichens growing on rocks are called :

 
 
 
 

203. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

205. 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:

 
 
 
 

206. Rhizopus belongs to:

 
 
 
 

207. Sexual reproduction in Rhizopus is by:

 
 
 
 

208. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

211. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

213. Enteric bacteria are those bacteria that live:

 
 
 
 

214. Pinus microsporophyll bears:

 
 
 
 

215. Genetic material of TMV is:

 
 
 
 

216. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. Mycoplasma is different from bacteria due to:

 
 
 
 

221. The first to isolate a plant virus was:

 
 
 
 

222. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

224. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

228. The role of meiosis is for:

 
 
 
 

229. Which lichen is called Reindeer moss?

 
 
 
 

230. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

237. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

239. Select the correct statement: (NEET 2016)

 
 
 
 

240. All protozoans possess:

 
 
 
 

241. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

242. What is absent in Deuteromycetes?

 
 
 
 

243. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. In Cycas:

 
 
 
 

262. The sporangiophores in Rhizopus are:

 
 
 
 

263. Nannandria are:

 
 
 
 

264. Metulae are found in:

 
 
 
 

265. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

267. The tree fern is:

 
 
 
 

268. Desired type of Cycas can be grown by:

 
 
 
 

269. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

271. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

273. Ovules are not found enclosed in ovary of:

 
 
 
 

274. Special feature of pollen grains of Pinus is :

 
 
 
 

275. Botulinum toxin effects:

 
 
 
 

276. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

278. In Pteris, the archegonia are present:

 
 
 
 

279. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

281. Citrus canker is caused by :

 
 
 
 

282. Which fixes atmospheric nitrogen?

 
 
 
 

283. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

285. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

287. Agar-agar is obtained from:

 
 
 
 

288. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

293. Vegetative reproduction in Cycas is by means of :

 
 
 
 

294. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. The upper region of moss capsule is :

 
 
 
 

300. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Halophiles are the bacteria that require for growth:

 
 
 
 

306. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

308. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

309. Tautonyms are illegitimate in:

 
 
 
 

310. The teeth of peristome of Funaria are :

 
 
 
 

311. The development of Selaginella embryo is:

 
 
 
 

312. Which is the nuclear material in bacteria?

 
 
 
 

313. In Funaria :

 
 
 
 

314. Quarantine regulations are concerned with:

 
 
 
 

315. Saccharomyces is well known for:

 
 
 
 

316. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Downy mildew disease is caused by :

 
 
 
 

320. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

322. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

328. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

331. Green plants are classified as :

 
 
 
 

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

 
 
 
 

333. Water-borne bacterial diseases are:

 
 
 
 

334. The mycelium of Rhizopus is:

 
 
 
 

335. Lichen show :

 
 
 
 

336. Wine turns sour because of:

 
 
 
 

337. Rice, pea, potato are :

 
 
 
 

338. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

341. Little leaf disease of Brinjal is caused by:

 
 
 
 

342. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

344. Mycoplasma are:

 
 
 
 

345. In Funaria, calyptra is derived from :

 
 
 
 

346. Which have the largest antherozoid?

 
 
 
 

347. The truncated cone of HIV consists of:

 
 
 
 

348. Synzoospore is produced in:

 
 
 
 

349. Fruits are not found in :

 
 
 
 

350. To which country Antony van Leeuwenhoek belong?

 
 
 
 

351. Green plants are classified as:

 
 
 
 

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

 
 
 
 

353. Seeds are characteristically found in :

 
 
 
 

354. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

356. Absorptive nutrition is:

 
 
 
 

357. 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:

 
 
 
 

358. Meiosis in Ulothrix takes place:

 
 
 
 

359. Virus and bacteriophage are made-up of:

 
 
 
 

360. Longest known virus is:

 
 
 
 

361. Gymnosperms could also be called as:

 
 
 
 

362. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

364. The vascular bundles of Cycas stem are :

 
 
 
 

365. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

367. Azolla growing in paddy fields helps in:

 
 
 
 

368. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. The mode of nutrition of bacteria is usually:

 
 
 
 

372. Citrus canker is caused by:

 
 
 
 

373. In Gymnosperms endosperm is a:

 
 
 
 

374. The smallest bacterium is:

 
 
 
 

375. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. The similarity between cyanobacteria and bacteria:

 
 
 
 

381. Yeast belongs to class:

 
 
 
 

382. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. Chief constituents of bordeaux mixture are :

 
 
 
 

386. Pollination in Cycas takes place by :

 
 
 
 

387. Most primitive kind of flower is represented by:

 
 
 
 

388. Ovary is absent in :

 
 
 
 

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

 
 
 
 

390. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

391. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395.

396. Bryophyta have a special character from other plants:

 
 
 
 

397. Chemosynthetic bacteria are:

 
 
 
 

398. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

400. Generic name of mango is:

 
 
 
 

401. Gametophyte is the main plant body in :

 
 
 
 

402. True sexuality is not found in:

 
 
 
 

403. Which statement is wrong in regard to bacteria?

 
 
 
 

404. Red rot of sugarcane is caused by :

 
 
 
 

405. Vascular cryptogams is the term used for:

 
 
 
 

406. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

408. Fern prothallus produces:

 
 
 
 

409. 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:

 
 
 
 

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

 
 
 
 

411. Cycas plant in appearance resembles :

 
 
 
 

412. Which causes red tide?

 
 
 
 

413. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

415. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

417. Germination of the seed of Pinus is :

 
 
 
 

418. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. What is mycorrhiza?

 
 
 
 

423. Discovery of penicillin was based on:

 
 
 
 

424. The male gametes of Pinus are :

 
 
 
 

425. In moss, reduction division occurs in :

 
 
 
 

426. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. The two conjugating gametangia of Rhizopus are:

 
 
 
 

430. Bacteria differ from viruses in being sensitive to:

 
 
 
 

431. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

433. 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?

 
 
 
 

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

 
 
 
 

435. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

437. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Protozoans are considered animals because these are:

 
 
 
 

442. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

443. Maximum diversity of life forms occurs in :

 
 
 
 

444. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. The fungi that grow on wood are called:

 
 
 
 

451. Who discovered heterothallism in fungi?

 
 
 
 

452. NBG of Lucknow is now named as:

 
 
 
 

453. Pneumonia is caused by:

 
 
 
 

454. Linnaeus is credited with introducing:

 
 
 
 

455. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

457. Heterotrichous habit means :

 
 
 
 

458. The prothallus of fern represents the plant:

 
 
 
 

459. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

461. Early blight of potato is caused by:

 
 
 
 

462. The prothallus of fern is:

 
 
 
 

463. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

464. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

469. Winged seeds are found in :

 
 
 
 

470. Ovules are not found enclosed in ovary in :

 
 
 
 

471. TMV was isolated in crystalline form by:

 
 
 
 

472. Most of the algae are :

 
 
 
 

473. Most primitive group of vascular plants are:

 
 
 
 

474. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

476. Heterocysts are found in :

 
 
 
 

477. Which of the following lichens is harmful?

 
 
 
 

478. In moss, calyptra is formed from:

 
 
 
 

479. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

481. Funaria is :

 
 
 
 

482. Clostridium can:

 
 
 
 

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

 
 
 
 

484. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

486. The source of litmus is :

 
 
 
 

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

 
 
 
 

488. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

490. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. Which of the following shows heterotrichous habit?

 
 
 
 

494. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. The photosynthetic protists are:

 
 
 
 

501. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

503. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

505. Most primitive embryophytes are placed in :

 
 
 
 

506. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

508. Anoxygenic photosynthesis occurs in:

 
 
 
 

509. The chief characteristic of bryophyta is that :

 
 
 
 

510. Pteridophyta are also called:

 
 
 
 

511. Botulism is a:

 
 
 
 

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

 
 
 
 

513. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

515. Viroids have:

 
 
 
 

516. Seeds are characteristically found in:

 
 
 
 

517. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

519. The leaves of Funaria are :

 
 
 
 

520. Isomorphic type alternation of generation is found in:

 
 
 
 

521. In moss, sporophyte is formed on:

 
 
 
 

522. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

524. Roots are absent in :

 
 
 
 

525. All algae have:

 
 
 
 

526. Which is the correct statement about Selaginella?

 
 
 
 

527. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

529. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

531. Siphonogamy is found in:

 
 
 
 

532. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

534. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

536. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

539. Some biologists have used the term Mycetozoa for:

 
 
 
 

540. Male gametophyte of Selaginella is found:

 
 
 
 

541. Fern plants are:

 
 
 
 

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

 
 
 
 

543. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

545. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

547. Rhizophore of Selaginella is:

 
 
 
 

548. Ethylene oxide is widely used to:

 
 
 
 

549. Antibiotic has been extracted from :

 
 
 
 

550. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

552. Cleavage polyembryony is found in :

 
 
 
 

553. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

560. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Which bacteria convert nitrate into nitrogen?

 
 
 
 

564. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. Selaginella differs from Moss in having:

 
 
 
 

573. What is a vector?

 
 
 
 

574. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

576. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

582. Mycoplasmas are not viruses in nature because:

 
 
 
 

583. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Soil fertility is lost by the activities of:

 
 
 
 

589. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Select the wrong statement:

 
 
 
 

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

 
 
 
 

594. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

596. To which class Riccia belongs :

 
 
 
 

597. Oswald Tippo’s classification was based on :

 
 
 
 

598.

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

 
 
 
 

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

 
 
 
 

601. The roots of Cycas are :

 
 
 
 

602. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

604. Funaria is :

 
 
 
 

605. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

611. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

613.

614. The fern plant is:

 
 
 
 

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

 
 
 
 

616. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

618. The fungi used as food are:

 
 
 
 

619. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

623. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

625. The sori in Dryopteris are found on:

 
 
 
 

626. Which of the following is a monocot?

 
 
 
 

627. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

629. Proembryo in Pinus is :

 
 
 
 

630. Which one of the following statement is wrong?

 
 
 
 

631. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

633. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

635. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

642. Ectocarpus produces:

 
 
 
 

643. E coli is a:

 
 
 
 

644. In tracheophyta:

 
 
 
 

645. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

647. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

658. The disease apple scab is caused by:

 
 
 
 

659. The sporophyte of Riccia is :

 
 
 
 

660. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

666. The chloroplast of Chlamydomonas are:

 
 
 
 

667. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

669. Standard size of a herbarium sheet is:

 
 
 
 

670. Zoogametes are not found in:

 
 
 
 

671. 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?

 
 
 
 

672. Asexual reproductive body of Volvox is called:

 
 
 
 

673. In Cycas which structure is equivalent to stamen?

 
 
 
 

674. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. The gametophyte of moss has distinct phases :

 
 
 
 

678. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. Gram stain is used to:

 
 
 
 

683. The disease symptom necrosis refers to :

 
 
 
 

684. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Most resistant spore in bacteria is:

 
 
 
 

689. Woody climbers are known as :

 
 
 
 

690. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

692. Ulothrix produces :

 
 
 
 

693. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

695. Cryptogams include :

 
 
 
 

696. In Pteris, the roots are:

 
 
 
 

697. Aflatoxin is produced by:

 
 
 
 

698. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

700. Some bacteria cannot be killed easily because of:

 
 
 
 

701. Coenogamete is found in:

 
 
 
 

702. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

704. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

706. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

708. Embryo formation is not known in :

 
 
 
 

709. The lambda phase is a:

 
 
 
 

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

 
 
 
 

711. Climbers are found in genus:

 
 
 
 

712. Spirogyra represents the :

 
 
 
 

713. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

715. 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?

 
 
 
 

716. Which is a gametophytic tissue?

 
 
 
 

717. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

719. Saccharomyces is used in:

 
 
 
 

720. Spores of which plants have chloroplast:

 
 
 
 

721. What is streptomycin?

 
 
 
 

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

 
 
 
 

723. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

725. The fungi are usually:

 
 
 
 

726. Photosynthetic bacteria have:

 
 
 
 

727. Select the wrong statement:

 
 
 
 

728. The most primitive vascular plants is:

 
 
 
 

729. Small epidermal swellings due to infection are called :

 
 
 
 

730. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

731. Pinus is:

 
 
 
 

732. Lichens show :

 
 
 
 

733. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

739. Saccharomyces ludwigii ascus produces:

 
 
 
 

740. Spirogyra differs from moss protonema in having :

 
 
 
 

741. Viruses have:

 
 
 
 

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

 
 
 
 

743. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

745. Who named prion?

 
 
 
 

746. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

748. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

751. Common phycobiont in a lichen is :

 
 
 
 

752. Mostly type of zygospore in Ulothrix is:

 
 
 
 

753. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

760. Why is Cycas called a living fossil?

 
 
 
 

761. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

763. The chief characteristic of class Ascomycetes is:

 
 
 
 

764. Pasteurization of milk involves heating for:

 
 
 
 

765. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. The ferns are usually found:

 
 
 
 

771. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

773. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

775. The central part of Funaria axis is :

 
 
 
 

776. Cellular slime mold is:

 
 
 
 

777. What are plasmids?

 
 
 
 

778. 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:

 
 
 
 

779. Nitrifying bacteria play an important role by converting:

 
 
 
 

780. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

782. The rhizoids of Funaria are :

 
 
 
 

783. Centric discoid form of diatom is:

 
 
 
 

784. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

786. The chromosomal number in:

 
 
 
 

787. Which one of the following is a monocot?

 
 
 
 

788. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Which of the following is true for Selaginella?

 
 
 
 

792. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

794. Which condition is found in Cycas?

 
 
 
 

795. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. In moss, sporogenous tissue arises from:

 
 
 
 

799. John Hutchinson divided dicots into two divisions:

 
 
 
 

800. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. The development of sporangium in Selaginella is:

 
 
 
 

805. Detailed study of bacteriophage was made by:

 
 
 
 

806. Ginkgo biloba is a:

 
 
 
 

807. Methanogens belong to:

 
 
 
 

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

 
 
 
 

809. In a diplontic life cycle:

 
 
 
 

810. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

812. Iodine is obtained from:

 
 
 
 

813. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

819. The microsporophylls on the cone of Cycas are :

 
 
 
 

820. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

825. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

827. An Hfr bacterium is one that contains:

 
 
 
 

828. The sporangium of fern contains nearly:

 
 
 
 

829. Which part of Riccia bears nurse cells?

 
 
 
 

830. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

832. Pythium debaryanum is the causative agent of:

 
 
 
 

833. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

835. Bacteria growing on synthetic medium are called:

 
 
 
 

836. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

838. Which is absent from the xylem of Cycas?

 
 
 
 

839. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

841. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

843. The smallest unit of classification is:

 
 
 
 

844. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

846. Club moss and Peat moss belong to:

 
 
 
 

847. Among the algae kelps are :

 
 
 
 

848. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. The Rhizopus gametes are formed in:

 
 
 
 

853. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

854. LSD is:

 
 
 
 

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

 
 
 
 

856. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. Aflatoxin is produced as a product in :

 
 
 
 

860. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

862. The leaves of Funaria are :

 
 
 
 

863. Sporophyte of Funaria is :

 
 
 
 

864. Usually, bacteria reproduce by: