Quiz_Random

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

 
 
 
 

2. Banana bunchy top is caused by :

 
 
 
 

3. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

5. Funaria are commonly found :

 
 
 
 

6. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Fern prothallus is:

 
 
 
 

10. The smallest unit of classification is:

 
 
 
 

11. Wine turns sour because of:

 
 
 
 

12. In Funaria, calyptra is derived from :

 
 
 
 

13. Generic name of mango is:

 
 
 
 

14. The microsporophylls on the cone of Cycas are :

 
 
 
 

15. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

17. In tracheophyta:

 
 
 
 

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

 
 
 
 

19. The chief characteristic of class Ascomycetes is:

 
 
 
 

20. Each chloroplast in Spirogyra bears :

 
 
 
 

21. Desired type of Cycas can be grown by:

 
 
 
 

22. Cryptogams include :

 
 
 
 

23. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

25. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Number of capsomeres forming capsid of TMV is:

 
 
 
 

33. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. The two conjugating gametangia of Rhizopus are:

 
 
 
 

37. Pasteurization of milk involves heating for:

 
 
 
 

38. Who discovered heterothallism in fungi?

 
 
 
 

39. Which of the following does not contain chlorophyll?

 
 
 
 

40. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Fruits are not found in:

 
 
 
 

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

 
 
 
 

46. The tallest moss in the world is :

 
 
 
 

47. The root nodules of leguminous plants contain:

 
 
 
 

48. What is mycorrhiza?

 
 
 
 

49. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

54. Fern plants are:

 
 
 
 

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

 
 
 
 

56. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

58. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. LSD is:

 
 
 
 

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

 
 
 
 

63. What is a vector?

 
 
 
 

64. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. The leaves of Funaria are :

 
 
 
 

69. Which of the following is true for viruses?

 
 
 
 

70. Sexual reproduction in Rhizopus is by:

 
 
 
 

71. The gametophyte of moss has distinct phases :

 
 
 
 

72. Interferon is a:

 
 
 
 

73. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

75. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

79. Centric discoid form of diatom is:

 
 
 
 

80. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

82. Green plants are classified as :

 
 
 
 

83. Fern phloem lacks:

 
 
 
 

84. Which is not true for Escherichia coli?

 
 
 
 

85. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

87. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

89. The spermatozoids of Cycas are :

 
 
 
 

90. Who discovered cyanophages?

 
 
 
 

91. Lichens reproduce by :

 
 
 
 

92. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. The DNA of E coli is:

 
 
 
 

96. In Funaria :

 
 
 
 

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

 
 
 
 

98. Gram stain is used to:

 
 
 
 

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

 
 
 
 

100. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. In moss, sporogenous tissue arises from:

 
 
 
 

104. Little leaf disease of Brinjal is caused by:

 
 
 
 

105. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

107. Which of the following statement is correct?

 
 
 
 

108. Transfusion tissue is present in the leaflet of:

 
 
 
 

109. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

111. Who named prion?

 
 
 
 

112. Saccharomyces ludwigii ascus produces:

 
 
 
 

113. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

115. Green plants are classified as:

 
 
 
 

116. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

117. The first to isolate a plant virus was:

 
 
 
 

118. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Winged pollen grains are found in :

 
 
 
 

125. Choose the correct statement about Spirogyra:

 
 
 
 

126. Polystelic condition is found in:

 
 
 
 

127. The orders generally have the uniform endings:

 
 
 
 

128. Bacteria differ from viruses in being sensitive to:

 
 
 
 

129. Which group of algae have an incipient nucleus?

 
 
 
 

130. Gymnosperms could also be called as:

 
 
 
 

131. Circular DNA is seen in:

 
 
 
 

132. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

134. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

136. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. Iodine is obtained from:

 
 
 
 

142. Lichens form the first community in

 
 
 
 

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

 
 
 
 

144. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

146. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

148. Acellular slime mold is/are:

 
 
 
 

149. Lichens are indicators of :

 
 
 
 

150. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

155. Fruits are not found in :

 
 
 
 

156. Asexual reproductive body of Volvox is called:

 
 
 
 

157. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Penicillin was discovered by:

 
 
 
 

161. Funaria can be differentiated from Cycas :

 
 
 
 

162. The source of litmus is :

 
 
 
 

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

 
 
 
 

164. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

166. Bacteria are placed under:

 
 
 
 

167. Reproduction in Cycas takes place by :

 
 
 
 

168. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Pasteur is famous for his:

 
 
 
 

172. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Indusium in Dryopteris is:

 
 
 
 

178. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

180. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Mycoplasma are:

 
 
 
 

184. Ginkgo biloba is a:

 
 
 
 

185. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. Discovery of penicillin was based on:

 
 
 
 

189. The lichens growing on rocks are called :

 
 
 
 

190. The archegonia of Selaginella are differentiated by:

 
 
 
 

191. Azolla growing in paddy fields helps in:

 
 
 
 

192. Yeast belongs to class:

 
 
 
 

193. Which of the following are absent in Mycoplasma?

 
 
 
 

194.

195. The stele of Dryopteris is a:

 
 
 
 

196. Most appropriate word for protozoans is:

 
 
 
 

197. Who among the following discovered virus?

 
 
 
 

198. Red rot of sugarcane is caused by :

 
 
 
 

199. Late blight of potato is caused by:

 
 
 
 

200. Streptomyces falls under:

 
 
 
 

201. Which is an exception to cell theory?

 
 
 
 

202. Which of the following is a heterosporous pteridophyte?

 
 
 
 

203. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

205. Siphonogamy is found in:

 
 
 
 

206. Most primitive embryophytes are placed in :

 
 
 
 

207. 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?

 
 
 
 

208. Bacteria were first discovered by:

 
 
 
 

209. Virion refers to:

 
 
 
 

210. The prothallus of fern represents the plant:

 
 
 
 

211. Pollination in Cycas takes place by :

 
 
 
 

212. Simple polyembryony is found in :

 
 
 
 

213. Bentham and Hooker placed gymnosperms:

 
 
 
 

214. Vascular cryptogams is the term used for:

 
 
 
 

215. Detailed study of bacteriophage was made by:

 
 
 
 

216. Among the algae kelps are :

 
 
 
 

217. Heterocysts are found in :

 
 
 
 

218. Which is the nuclear material in bacteria?

 
 
 
 

219. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

224. Metulae are found in:

 
 
 
 

225. Which is a redwood tree?

 
 
 
 

226. Funaria is :

 
 
 
 

227. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

229. Reproduction in Rhizopus is:

 
 
 
 

230. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

232. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

234. Saccharomyces is used in:

 
 
 
 

235. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

236. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Pneumonia is caused by:

 
 
 
 

240. Citrus canker is caused by:

 
 
 
 

241. Which condition is found in Cycas?

 
 
 
 

242. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

243. Viruses are considered to be:

 
 
 
 

244. The disease apple scab is caused by:

 
 
 
 

245. Which causes red tide?

 
 
 
 

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

 
 
 
 

247. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

254.

255. The ascus of yeast contains:

 
 
 
 

256. Longest known virus is:

 
 
 
 

257. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

259. The fungi used as food are:

 
 
 
 

260. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

262. Enteric bacteria are those bacteria that live:

 
 
 
 

263. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

265.

266. Some diseases caused by bacteria are:

 
 
 
 

267. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Most primitive kind of flower is represented by:

 
 
 
 

271. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

272. Lichens show :

 
 
 
 

273. Sleeping sickness disease in man is caused by:

 
 
 
 

274. Which have the largest antherozoid?

 
 
 
 

275. The term stele was given by:

 
 
 
 

276. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

278. First animal pathogenic virus was discovered by:

 
 
 
 

279. Cap cells are found in the filament of:

 
 
 
 

280. Broad spectrum antibiotic is, which:

 
 
 
 

281. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

283. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

285. Which of the following have algal zone?

 
 
 
 

286. The sporophyte of Riccia is represented by :

 
 
 
 

287. Halophiles are the bacteria that require for growth:

 
 
 
 

288. Rhizoids of Riccia are :

 
 
 
 

289. Black rust of wheat is caused by:

 
 
 
 

290. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

292. The upper region of moss capsule is :

 
 
 
 

293. Pythium debaryanum is the causative agent of:

 
 
 
 

294. Most of the algae are :

 
 
 
 

295. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

297. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

306. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

307. Gametophyte is the main plant body in :

 
 
 
 

308. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. The archegonia in Selaginella develop on:

 
 
 
 

313. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

315. Who discovered streptomycin?

 
 
 
 

316. Which is the correct statement about Selaginella?

 
 
 
 

317. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Water-borne bacterial diseases are:

 
 
 
 

321. All protozoans possess:

 
 
 
 

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

 
 
 
 

323. Which of the following is a monocot?

 
 
 
 

324. Botulism is a:

 
 
 
 

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

 
 
 
 

326. Synzoospore is produced in:

 
 
 
 

327. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

332. Ovules are not found enclosed in ovary in :

 
 
 
 

333. Heterotrichous habit means :

 
 
 
 

334. The zygospore in Rhizopus on germination forms:

 
 
 
 

335. Leaf spot of groundnut is caused by :

 
 
 
 

336. Which of the following statements is not correct?

 
 
 
 

337. Enzymes are absent in:

 
 
 
 

338. In Pteris, the archegonia are present:

 
 
 
 

339. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. Mycoplasma contains:

 
 
 
 

348. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

350. The sporangia of Selaginella are attached:

 
 
 
 

351. Virus and bacteriophage are made-up of:

 
 
 
 

352. Bivalved siliceous shell or frustule occur in:

 
 
 
 

353. The spur of Pinus roxburghii has :

 
 
 
 

354. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. Which of the following are included in Tracheophyta?

 
 
 
 

362. Photoautotrophic bacteria have:

 
 
 
 

363. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

365. Fairy ring is the name given to:

 
 
 
 

366. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

369. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

377. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

385. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

387. Most resistant spore in bacteria is:

 
 
 
 

388. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

390. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Embryophyta includes:

 
 
 
 

394. The sporangium of fern contains nearly:

 
 
 
 

395. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. Majority of lichens are :

 
 
 
 

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

 
 
 
 

400. The coralloid roots are :

 
 
 
 

401. The Rhizopus is:

 
 
 
 

402. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

406. The plants of Funaria grow :

 
 
 
 

407. 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:

 
 
 
 

408. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. The phloem of vascular system of Cycas is :

 
 
 
 

412. In moss, reduction division occurs in :

 
 
 
 

413. Which of the following is a parasitic algae?

 
 
 
 

414. The gametophyte of fern is as:

 
 
 
 

415. All archaebacteria lack:

 
 
 
 

416. Cell walls of Gram-positive bacteria contain:

 
 
 
 

417. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

420. In Gymnosperms endosperm is a:

 
 
 
 

421. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

423. Ulothrix produces :

 
 
 
 

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

 
 
 
 

425. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

431. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

433. Late blight of potato is caused by :

 
 
 
 

434. In moss, conducting tissue is made up of

 
 
 
 

435. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

437. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

439. The group algae possesses representatives belonging to kingdom:

 
 
 
 

440. Antibiotics cure the disease by:

 
 
 
 

441. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

442. Most of the lichens are composed of :

 
 
 
 

443. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

445. 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?

 
 
 
 

446. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

448. The truncated cone of HIV consists of:

 
 
 
 

449. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

455. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

460. To which country Antony van Leeuwenhoek belong?

 
 
 
 

461. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

462. The lambda phase is a:

 
 
 
 

463. 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?

 
 
 
 

464. Psilotum is:

 
 
 
 

465. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

467. Bryophyta have been placed in cryptogams because:

 
 
 
 

468. Bacteria growing on synthetic medium are called:

 
 
 
 

469. Usually, bacteria reproduce by:

 
 
 
 

470. Black rust of wheat is caused by:

 
 
 
 

471. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Viroids have:

 
 
 
 

475. 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:

 
 
 
 

476. Fruiting body of lichens is :

 
 
 
 

477. Male gametophyte of Selaginella is found:

 
 
 
 

478. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

480. Ovary is absent in :

 
 
 
 

481. Triple antigen injection or vaccine are for:

 
 
 
 

482. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

484. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. Winged seeds are found in :

 
 
 
 

490. The middle sterile part of capsule is called:

 
 
 
 

491. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

496. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

502. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

504. Liverworts are included in :

 
 
 
 

505. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

507. An alga which is rich in proteins:

 
 
 
 

508. The megaspore of Selaginella on germination produces:

 
 
 
 

509. 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:

 
 
 
 

510. 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:

 
 
 
 

511. Penicillin is obtained from:

 
 
 
 

512. Sometimes the bacterial cell is enclosed in:

 
 
 
 

513. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

521. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

526. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. Viruses are commonly transmitted in plants through:

 
 
 
 

530. Amoeba is a member of the phylum:

 
 
 
 

531. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

533. Cycas is :

 
 
 
 

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

 
 
 
 

535. Cycas is different from mango in :

 
 
 
 

536. Some bacteria cannot be killed easily because of:

 
 
 
 

537. Pollination drop is:

 
 
 
 

538. Water bloom is generally caused by :

 
 
 
 

539. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Endemic plants are characterised by their:

 
 
 
 

547. Why is Cycas called a living fossil?

 
 
 
 

548. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

550. Oswald Tippo’s classification is:

 
 
 
 

551. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

553. Mucilaginous canals in Cycas are found in :

 
 
 
 

554. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

556. The fungi are usually:

 
 
 
 

557. Select the wrong statement:

 
 
 
 

558. Ergot of rye is caused by:

 
 
 
 

559. 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:

 
 
 
 

560. Which is a gametophytic tissue?

 
 
 
 

561. Ovules are not found enclosed in ovary of:

 
 
 
 

562. Facultative parasite is:

 
 
 
 

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

 
 
 
 

564. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. Anoxygenic photosynthesis occurs in:

 
 
 
 

572. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

574. The similarity between cyanobacteria and bacteria:

 
 
 
 

575. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

577. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Red rot of sugarcane is caused by:

 
 
 
 

586. Typhoid in man is caused by:

 
 
 
 

587. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

596. Milk is converted to curd by:

 
 
 
 

597. The central part of Funaria axis is :

 
 
 
 

598. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

608. Some biologists have used the term Mycetozoa for:

 
 
 
 

609. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

615. The sori in Dryopteris are found on:

 
 
 
 

616. The flagella of Chlamydomonas are:

 
 
 
 

617. E coli is a:

 
 
 
 

618. The antherozoids of Funaria are :

 
 
 
 

619. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Cycas plant in appearance resembles :

 
 
 
 

623. Ergot is obtained from :

 
 
 
 

624. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

625. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

627. Downy mildew disease is caused by :

 
 
 
 

628. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. The fungi that grow on wood are called:

 
 
 
 

632. The leaf of Cycas shows:

 
 
 
 

633. The young leaves of Cycas have :

 
 
 
 

634. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

636. Which is a tautonym?

 
 
 
 

637. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

639. In Cycas:

 
 
 
 

640. Smut of maize is caused by :

 
 
 
 

641. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

643. Helotism word is used for the symbiosis between :

 
 
 
 

644. Clostridium can:

 
 
 
 

645. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

647. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

649. Pinus is:

 
 
 
 

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

 
 
 
 

651. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

655. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

657. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

659. The leaves of Funaria are :

 
 
 
 

660. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

662. The gametophyte of fern bears:

 
 
 
 

663. What is the role of nitrifying bacteria?

 
 
 
 

664. Spirogyra differs from moss protonema in having :

 
 
 
 

665. Fertility of the soil is increased by:

 
 
 
 

666. Cycas is:

 
 
 
 

667. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. In Pteris, the roots are:

 
 
 
 

672. Which of the following are included in Tracheophyta?

 
 
 
 

673. Rhizophore of Selaginella is:

 
 
 
 

674. Which organisms are the oldest life forms?

 
 
 
 

675. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

677. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. In Selaginella, the microsporangia are:

 
 
 
 

681. Which is an edible fungus?

 
 
 
 

682. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

683. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

685. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Lichen show :

 
 
 
 

689. In a bacteriophage, DNA is present in:

 
 
 
 

690. What are Cyanobacteria?

 
 
 
 

691. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

693. 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?

 
 
 
 

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

 
 
 
 

695. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

697. What are plasmids?

 
 
 
 

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

 
 
 
 

699. Germination of the seed of Pinus is :

 
 
 
 

700. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

704. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

706. Antibiotic has been extracted from :

 
 
 
 

707. Botulinum toxin effects:

 
 
 
 

708. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

713.

 

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

 
 
 
 

715. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. Lichens are ecologically important because :

 
 
 
 

719. The order generally ends with:

 
 
 
 

720. Selaginella differs from Moss in having:

 
 
 
 

721. Water-net is the name of:

 
 
 
 

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

 
 
 
 

723. What is absent in Deuteromycetes?

 
 
 
 

724. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

726. The fern plant is:

 
 
 
 

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

 
 
 
 

728. In moss, calyptra is formed from:

 
 
 
 

729. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

732. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

734. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

736. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

738. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

740. In Gymnocarpeae the fruiting body is :

 
 
 
 

741. How a fern differs from a moss?

 
 
 
 

742. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. What is special feature of fern archegonia?

 
 
 
 

746. Meristele of fern is:

 
 
 
 

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

 
 
 
 

748. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

751. In dinoflagellates, the two flagella are:

 
 
 
 

752. Fruits are not found in Cycas because:

 
 
 
 

753. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Yeast is a source of:

 
 
 
 

759. Vascular cryptogam is the term used for :

 
 
 
 

760. Nitrogen-fixing bacteria may be located:

 
 
 
 

761. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

763. The tree fern is:

 
 
 
 

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

 
 
 
 

765. To which class Riccia belongs :

 
 
 
 

766. The largest known bacterium is:

 
 
 
 

767. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

769. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

771. Nannandria are:

 
 
 
 

772. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Which is a fungicide?

 
 
 
 

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

 
 
 
 

780. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

785. 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:

 
 
 
 

786. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

788. Maximum diversity of life forms occurs in :

 
 
 
 

789. Most primitive group of vascular plants are:

 
 
 
 

790. Bacteria are considered to be plants because they:

 
 
 
 

791. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. The male gametes of Pinus are :

 
 
 
 

796. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

798. One of the distinctive feature of Spirogyra is :

 
 
 
 

799. Which part of Riccia bears nurse cells?

 
 
 
 

800. Viruses have:

 
 
 
 

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

 
 
 
 

802. The largest alga is:

 
 
 
 

803. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

805. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

807. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

814. What is streptomycin?

 
 
 
 

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

 
 
 
 

816. The photosynthetic protists are:

 
 
 
 

817. Early blight of potato is caused by:

 
 
 
 

818. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

820. All algae have:

 
 
 
 

821. Diphtheria is caused by:

 
 
 
 

822. The development of sporangium in Selaginella is:

 
 
 
 

823. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

825. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

827. Ethylene oxide is widely used to:

 
 
 
 

828. Cellular slime mold is:

 
 
 
 

829. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. 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:

 
 
 
 

833. Woody climbers are known as :

 
 
 
 

834. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

836. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

838. In Cycas the fertilization is:

 
 
 
 

839. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

841. Small epidermal swellings due to infection are called :

 
 
 
 

842. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

844. Genetic material of TMV is:

 
 
 
 

845. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. Cyathia is characterized by:

 
 
 
 

850. Agar-agar is obtained from:

 
 
 
 

851. Embryophyta includes :

 
 
 
 

852. The megasporangium of Selaginella is:

 
 
 
 

853. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

861. Infective part of virus was discovered by:

 
 
 
 

862. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

864. Oswald Tippo’s classification was based on :