Quiz_Random

1. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

3. The spur of Pinus roxburghii has :

 
 
 
 

4. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

6. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

8. The Rhizopus is:

 
 
 
 

9. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

11. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

13. Which of the following have algal zone?

 
 
 
 

14. Citrus canker is caused by:

 
 
 
 

15. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

17. What is special feature of fern archegonia?

 
 
 
 

18. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

20. In Pteris, the roots are:

 
 
 
 

21. Interferon is a:

 
 
 
 

22. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

27. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

29. Rhizopus belongs to:

 
 
 
 

30. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

32. In Gymnocarpeae the fruiting body is :

 
 
 
 

33. The genetic material of poxvirus is:

 
 
 
 

34. Embryophyta includes :

 
 
 
 

35. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

40. Disease resistant plant varieties can be produced by :

 
 
 
 

41. Water bloom is generally caused by :

 
 
 
 

42. In Cycas which structure is equivalent to stamen?

 
 
 
 

43. Funaria are commonly found :

 
 
 
 

44. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. Which one of the following is a monocot?

 
 
 
 

49. Iodine is obtained from:

 
 
 
 

50. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

52. Ergot is obtained from :

 
 
 
 

53. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

63. The nucleus of bacteria is:

 
 
 
 

64. The orders generally have the uniform endings:

 
 
 
 

65. The gametophyte produced by apospory is :

 
 
 
 

66. Red rot of sugarcane is caused by:

 
 
 
 

67. What is streptomycin?

 
 
 
 

68. 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?

 
 
 
 

69. Heterospory is the production of:

 
 
 
 

70. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

72. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Bacteria were first discovered by:

 
 
 
 

79. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

84. Simple polyembryony is found in :

 
 
 
 

85. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

87. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

89. In a bacteriophage, DNA is present in:

 
 
 
 

90. Most resistant spore in bacteria is:

 
 
 
 

91. Which of the following are included in Tracheophyta?

 
 
 
 

92. Maximum diversity of life forms occurs in :

 
 
 
 

93. Polystelic condition is found in:

 
 
 
 

94. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

99. Fern plants are:

 
 
 
 

100. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

102. Little leaf disease of Brinjal is caused by:

 
 
 
 

103. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

105. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

111. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

114. Oswald Tippo’s classification is:

 
 
 
 

115. The antibiotic is obtained from:

 
 
 
 

116. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

122. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

124. Bacteria are placed under:

 
 
 
 

125. The fern plant is:

 
 
 
 

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

 
 
 
 

127. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

128. The seedless plants which possess vascular tissues are:

 
 
 
 

129. Placenta in fern is:

 
 
 
 

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

 
 
 
 

131. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

133. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. In Funaria :

 
 
 
 

137. Kuru, a human disease is caused by:

 
 
 
 

138. Photosynthetic bacteria have:

 
 
 
 

139. The flagella of Chlamydomonas are:

 
 
 
 

140. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

141. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

143. The development of Selaginella embryo is:

 
 
 
 

144. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

146. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

148. In Cycas microsporangia are borne on:

 
 
 
 

149. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Cell walls of Gram-positive bacteria contain:

 
 
 
 

153. Virion refers to:

 
 
 
 

154. The gametophyte of fern bears:

 
 
 
 

155. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

157. Etiology includes the study of :

 
 
 
 

158. Reproduction in Rhizopus is:

 
 
 
 

159. The sori in Dryopteris are found on:

 
 
 
 

160. Viruses are considered to be:

 
 
 
 

161. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

163. Cycas is similar to a mustard plant :

 
 
 
 

164. Pollination in Cycas takes place by :

 
 
 
 

165. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

168. Which of the following applies to Selaginella?

 
 
 
 

169. The sporophyte of Riccia is represented by :

 
 
 
 

170. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

172. What are plasmids?

 
 
 
 

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

 
 
 
 

174. Cleavage polyembryony is found in :

 
 
 
 

175. Diploxylic vascular bundles are found in:

 
 
 
 

176. Cellular slime mold is:

 
 
 
 

177. Chemosynthetic bacteria are:

 
 
 
 

178. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

180. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

182. 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:

 
 
 
 

183. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

189. Nannandria are:

 
 
 
 

190. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

192. Spores of which plants have chloroplast:

 
 
 
 

193. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. Lichens are indicators of :

 
 
 
 

197. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. 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?

 
 
 
 

201. Ulothrix produces :

 
 
 
 

202. 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:

 
 
 
 

203. In tracheophyta:

 
 
 
 

204. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

217. Fern prothallus is:

 
 
 
 

218. Early blight of potato is caused by:

 
 
 
 

219. Sexual reproduction in Rhizopus is by:

 
 
 
 

220. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

222. The leafy fern plant represents the:

 
 
 
 

223. Synzoospore is produced in:

 
 
 
 

224. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

228. Some biologists have used the term Mycetozoa for:

 
 
 
 

229. Germ theory of disease was proposed by:

 
 
 
 

230. Choose the correct statement about Spirogyra:

 
 
 
 

231. In Selaginella, the microsporangia are:

 
 
 
 

232. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Parmelia belongs to :

 
 
 
 

236. Streptomycin is obtained from:

 
 
 
 

237. The ascus of yeast contains:

 
 
 
 

238. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

240. Water-net is the name of:

 
 
 
 

241. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

242. The chromosomal number in:

 
 
 
 

243. Lichens reproduce by :

 
 
 
 

244. In moss, calyptra is formed from:

 
 
 
 

245. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

247. Winged seeds are found in :

 
 
 
 

248. Late blight of potato is caused by :

 
 
 
 

249. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. Saccharomyces is used in:

 
 
 
 

253. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Bacteriophages have been used as:

 
 
 
 

257. The prothallus of fern is:

 
 
 
 

258. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Bryophyta have a special character from other plants:

 
 
 
 

266. 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:

 
 
 
 

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

 
 
 
 

268. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

270. True sexuality is not found in:

 
 
 
 

271. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

273. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

274. The microsporophylls on the cone of Cycas are :

 
 
 
 

275. The truncated cone of HIV consists of:

 
 
 
 

276. NBG of Lucknow is now named as:

 
 
 
 

277.

 

278. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Facultative saprophyte is:

 
 
 
 

282. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

288. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

292. Lichens are ecologically important because :

 
 
 
 

293. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

295. Siphonogamy is found in:

 
 
 
 

296. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

298. Cycas is different from mango in :

 
 
 
 

299. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

301. In moss, stomata are found:

 
 
 
 

302. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

304. Pseudomycelium is found in:

 
 
 
 

305. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

310. Which is not found in bacteria?

 
 
 
 

311. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

313. Amoeba is a member of the phylum:

 
 
 
 

314. Which is a tautonym?

 
 
 
 

315. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

316. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. In Herpes virus DNA is:

 
 
 
 

320. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

322. Photoautotrophic bacteria have:

 
 
 
 

323. Some diseases caused by bacteria are:

 
 
 
 

324. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

326. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Lichens reproduce by :

 
 
 
 

330. Funaria is :

 
 
 
 

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

 
 
 
 

332. Tautonyms are illegitimate in:

 
 
 
 

333. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

335. The fungi are mostly:

 
 
 
 

336. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

338. Pteridophytes are also known as :

 
 
 
 

339. Funaria is :

 
 
 
 

340. Reproduction in Cycas takes place by :

 
 
 
 

341. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

351. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Fruiting body of lichens is :

 
 
 
 

355. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

357. Asexual reproductive body of Volvox is called:

 
 
 
 

358. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

362. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

367. Detailed study of bacteriophage was made by:

 
 
 
 

368. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

370. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

372. Sporophyte of Funaria is :

 
 
 
 

373. Special feature of pollen grains of Pinus is :

 
 
 
 

374. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

377. Water-borne bacterial diseases are:

 
 
 
 

378. The largest known bacterium is:

 
 
 
 

379. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

381. The mycelium of Rhizopus is:

 
 
 
 

382. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Ectocarpus produces:

 
 
 
 

387. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

389. Milk is converted to curd by:

 
 
 
 

390. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

392. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

397. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

399. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

401. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

403. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

405. The most primitive vascular plants is:

 
 
 
 

406. Viroids have:

 
 
 
 

407. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

409. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

411. Each chloroplast in Spirogyra bears :

 
 
 
 

412. An Hfr bacterium is one that contains:

 
 
 
 

413. Cycas is:

 
 
 
 

414. Fern phloem lacks:

 
 
 
 

415. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

417. Discovery of penicillin was based on:

 
 
 
 

418. The term stele was given by:

 
 
 
 

419. Fairy ring is the name given to:

 
 
 
 

420. One of the distinctive feature of Spirogyra is :

 
 
 
 

421. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

423. Most of the algae are :

 
 
 
 

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

 
 
 
 

425. The sporangium of fern contains nearly:

 
 
 
 

426. Smallpox is caused by:

 
 
 
 

427. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. Mycoplasma are:

 
 
 
 

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

 
 
 
 

432. Roots are absent in :

 
 
 
 

433. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

435. The sporangiophores in Rhizopus are:

 
 
 
 

436. Cryptogams include :

 
 
 
 

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

 
 
 
 

438. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

440. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

441. Clostridium can:

 
 
 
 

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

 
 
 
 

443. Pinus is:

 
 
 
 

444. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Cycas is :

 
 
 
 

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

 
 
 
 

449. To which country Antony van Leeuwenhoek belong?

 
 
 
 

450. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

456. Ovary is absent in :

 
 
 
 

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

 
 
 
 

458. Lichen show :

 
 
 
 

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

 
 
 
 

460. Where does meiosis occur in yeast?

 
 
 
 

461. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

465. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

467. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

469. Liverworts are included in :

 
 
 
 

470. Protists which are diploid reproduce sexually by:

 
 
 
 

471. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

473. All algae have:

 
 
 
 

474. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

479. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Climbers are found in genus:

 
 
 
 

484. Spermatophyta are characterized by producing:

 
 
 
 

485. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

487. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

488. Anoxygenic photosynthesis occurs in:

 
 
 
 

489. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

491. Broad spectrum antibiotic is, which:

 
 
 
 

492. The tree fern is:

 
 
 
 

493. The roots of Cycas are :

 
 
 
 

494. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

496. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

498. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

501. Mycoplasma is different from bacteria due to:

 
 
 
 

502. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

504. The chloroplast of Chlamydomonas are:

 
 
 
 

505. The disease symptom necrosis refers to :

 
 
 
 

506. Lichens form the first community in

 
 
 
 

507. The gametophyte of fern is as:

 
 
 
 

508. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

510. The sexual reproductive organs in Rhizopus are:

 
 
 
 

511. Metulae are found in:

 
 
 
 

512. LSD is:

 
 
 
 

513. A gill of Agaricus:

 
 
 
 

514. Botulinum toxin effects:

 
 
 
 

515. Which is an edible fungus?

 
 
 
 

516. Acetobacter is useful in:

 
 
 
 

517. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

519. Which is absent from the xylem of Cycas?

 
 
 
 

520. Nitrogen-fixing bacteria may be located:

 
 
 
 

521. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

526. What are Cyanobacteria?

 
 
 
 

527. Chemosynthetic bacteria are:

 
 
 
 

528. Quarantine regulations are concerned with:

 
 
 
 

529. Coenogamete is found in:

 
 
 
 

530. All protozoans possess:

 
 
 
 

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

 
 
 
 

532. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

534. TMV was isolated in crystalline form by:

 
 
 
 

535. Mucilaginous canals in Cycas are found in :

 
 
 
 

536. The spermatozoids of Cycas are :

 
 
 
 

537. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

539. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

540. Sometimes the bacterial cell is enclosed in:

 
 
 
 

541. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

543. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

545. The sporangia of Selaginella are attached:

 
 
 
 

546. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

548. Which causes red tide?

 
 
 
 

549. Lichens show :

 
 
 
 

550. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

552. Banana bunchy top is caused by :

 
 
 
 

553. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

555. Photosynthetic protists belong to:

 
 
 
 

556. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

558. In Cycas the fertilization is:

 
 
 
 

559. To which class Riccia belongs :

 
 
 
 

560. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

568. Embryophyta includes:

 
 
 
 

569. Cycas revoluta is widely grown as :

 
 
 
 

570. The middle sterile part of capsule is called:

 
 
 
 

571. The megasporangium of Selaginella is:

 
 
 
 

572. Cap cells are found in the filament of:

 
 
 
 

573. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

578. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

580. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

584. Pollination in Pinus is :

 
 
 
 

585. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

587. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

589. Pythium debaryanum is the causative agent of:

 
 
 
 

590. Circular DNA is seen in:

 
 
 
 

591. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

592. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

594. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

596. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

598. Pneumonia is caused by:

 
 
 
 

599. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

603. Psilotum is:

 
 
 
 

604. In Gymnosperms endosperm is a:

 
 
 
 

605. The disease apple scab is caused by:

 
 
 
 

606. The chief characteristic of bryophyta is that :

 
 
 
 

607. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

609. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. 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:

 
 
 
 

615. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. The order generally ends with:

 
 
 
 

620. Funaria is a Bryophyta because :

 
 
 
 

621. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

623. Fruits are not found in:

 
 
 
 

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

 
 
 
 

625. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

626. Most common type of conjugation in Spirogyra is :

 
 
 
 

627.

628. Plasmids are:

 
 
 
 

629. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

630. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

636. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

638. Which one of the following statement is wrong?

 
 
 
 

639. The ferns are usually found:

 
 
 
 

640.

641. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

644. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

646. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

654. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. Pinus microsporophyll bears:

 
 
 
 

658. Heterotrichous habit means :

 
 
 
 

659. Which of the following are absent in Mycoplasma?

 
 
 
 

660. Agar-agar is obtained from:

 
 
 
 

661. The teeth of peristome of Funaria are :

 
 
 
 

662. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

664. The smallest bacterium is:

 
 
 
 

665. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

667. Which is a redwood tree?

 
 
 
 

668. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. The Rhizopus gametes are formed in:

 
 
 
 

675. All archaebacteria lack:

 
 
 
 

676. Ovules are not found enclosed in ovary in :

 
 
 
 

677. Generic name of mango is:

 
 
 
 

678. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

680. Rhizophore of Selaginella is:

 
 
 
 

681.

682. Spermatophyta are characterized by producing:

 
 
 
 

683. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Meristele of fern is:

 
 
 
 

687. Which is the correct statement about Selaginella?

 
 
 
 

688. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

693. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. Streptomyces falls under:

 
 
 
 

698. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

700. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

702. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

704. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

706. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. 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?

 
 
 
 

710. Smut of maize is caused by :

 
 
 
 

711. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

713. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

715. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

717. Iodine is obtained from :

 
 
 
 

718. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

724. Soil fertility is lost by the activities of:

 
 
 
 

725. Which of the following is a heterosporous pteridophyte?

 
 
 
 

726. Seeds are characteristically found in:

 
 
 
 

727. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

729. Bacteriophage consists of:

 
 
 
 

730. 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:

 
 
 
 

731. Citrus canker is caused by :

 
 
 
 

732. Longest known virus is:

 
 
 
 

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

 
 
 
 

734. In moss, peristomial teeth are:

 
 
 
 

735. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. Antibiotic has been extracted from :

 
 
 
 

739. The largest alga is:

 
 
 
 

740. Cyathia is characterized by:

 
 
 
 

741. The photosynthetic protists are:

 
 
 
 

742. Protozoans are considered animals because these are:

 
 
 
 

743. The smallest unit of classification is:

 
 
 
 

744. Common phycobiont in a lichen is :

 
 
 
 

745. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

747. Aflatoxin is produced by:

 
 
 
 

748. Rhizoids of Riccia are :

 
 
 
 

749. Downy mildew disease is caused by :

 
 
 
 

750. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

752. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

754. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

763. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Yeast belongs to class:

 
 
 
 

772. White rust of crucifers is caused by:

 
 
 
 

773. Winged pollen grains are found in :

 
 
 
 

774. Ovary is absent in:

 
 
 
 

775. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. The plants of Funaria grow :

 
 
 
 

779. Fruits are not found in :

 
 
 
 

780. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

791. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

793. In angiosperms double fertilization represents:

 
 
 
 

794. The central part of Funaria axis is :

 
 
 
 

795. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

802. Aflatoxin is produced as a product in :

 
 
 
 

803. Redness of red sea is due to :

 
 
 
 

804. The first to isolate a plant virus was:

 
 
 
 

805. 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:

 
 
 
 

806. Small epidermal swellings due to infection are called :

 
 
 
 

807. Mostly type of zygospore in Ulothrix is:

 
 
 
 

808. In a diplontic life cycle:

 
 
 
 

809. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Black rust of wheat is caused by:

 
 
 
 

813. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

815. Bentham and Hooker placed gymnosperms:

 
 
 
 

816. Botulism is a:

 
 
 
 

817. What is a vector?

 
 
 
 

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

 
 
 
 

819. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

821. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. 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:

 
 
 
 

825. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Which have the largest antherozoid?

 
 
 
 

829. Methanogens belong to:

 
 
 
 

830. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

832. Vegetative reproduction in Cycas is by means of :

 
 
 
 

833. What is mycorrhiza?

 
 
 
 

834. 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?

 
 
 
 

835. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

837. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Select the correct statement: (NEET 2016)

 
 
 
 

841. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

843. Green plants are classified as :

 
 
 
 

844. Number of capsomeres forming capsid of TMV is:

 
 
 
 

845. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

847. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

849. Which of the following lichens is harmful?

 
 
 
 

850. Chief constituents of bordeaux mixture are :

 
 
 
 

851. Male gametophyte of Selaginella is found:

 
 
 
 

852. Which of the following is a parasitic algae?

 
 
 
 

853. Endemic plants are characterised by their:

 
 
 
 

854. Enteric bacteria are those bacteria that live:

 
 
 
 

855. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

857. The gametophyte of moss has distinct phases :

 
 
 
 

858. Heterosporous pteridophytes always form:

 
 
 
 

859. Which of the following is true for Selaginella?

 
 
 
 

860. Vascular tissue is found in :

 
 
 
 

861. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Vascular cryptogams is the term used for: