Quiz_Random

1. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

6. Embryophyta includes:

 
 
 
 

7. All archaebacteria lack:

 
 
 
 

8. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. The antibiotic is obtained from:

 
 
 
 

12. The teeth of peristome of Funaria are :

 
 
 
 

13. 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:

 
 
 
 

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

 
 
 
 

15. Centric discoid form of diatom is:

 
 
 
 

16. Mycoplasma was discovered by:

 
 
 
 

17. Cap cells are found in the filament of:

 
 
 
 

18. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

20. In tracheophyta:

 
 
 
 

21. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Fruits are not found in:

 
 
 
 

27. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

29. Chief constituents of bordeaux mixture are :

 
 
 
 

30. The leaf of Cycas shows:

 
 
 
 

31. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

42. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

44. Which condition is found in Cycas?

 
 
 
 

45. Water bloom is generally caused by :

 
 
 
 

46. Some biologists have used the term Mycetozoa for:

 
 
 
 

47. Cycas revoluta is widely grown as :

 
 
 
 

48. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

50. Botulism is a:

 
 
 
 

51. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Leaf spot of groundnut is caused by :

 
 
 
 

55. Bryophyta have been placed in cryptogams because:

 
 
 
 

56. The roots of Cycas are :

 
 
 
 

57. NBG of Lucknow is now named as:

 
 
 
 

58. Streptomyces falls under:

 
 
 
 

59. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

64. Genetic material of TMV is:

 
 
 
 

65. The middle sterile part of capsule is called:

 
 
 
 

66. Male gametes in Dryopteris are:

 
 
 
 

67. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

69. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

71. 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:

 
 
 
 

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

 
 
 
 

73. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

75. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Clostridium can:

 
 
 
 

79. Which class of Protozoa includes all parasitic forms?

 
 
 
 

80. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

85. Most primitive embryophytes are placed in :

 
 
 
 

86. Synzoospore is produced in:

 
 
 
 

87. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Most of the algae are :

 
 
 
 

91. Azolla and Salvinia both are:

 
 
 
 

92. Methanogens belong to:

 
 
 
 

93. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Zoogametes are not found in:

 
 
 
 

97. Which of the following is a heterosporous pteridophyte?

 
 
 
 

98. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

100. 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?

 
 
 
 

101. Sporophyte of fern is:

 
 
 
 

102. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Vascular tissue is found in :

 
 
 
 

110. The fern plant is:

 
 
 
 

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

 
 
 
 

112. Fruits are not found in :

 
 
 
 

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

 
 
 
 

114. The development of sporangium in Selaginella is:

 
 
 
 

115. Which statement is wrong in regard to bacteria?

 
 
 
 

116. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

124. Bacteria are considered to be plants because they:

 
 
 
 

125. What is the role of nitrifying bacteria?

 
 
 
 

126. Oswald Tippo’s classification was based on :

 
 
 
 

127. The chief characteristic of class Ascomycetes is:

 
 
 
 

128. Red rot of sugarcane is caused by:

 
 
 
 

129. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. Most appropriate word for protozoans is:

 
 
 
 

133. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

135. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

137. Lichens show :

 
 
 
 

138. One of the distinctive feature of Spirogyra is :

 
 
 
 

139. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

141. Polystelic condition is found in:

 
 
 
 

142. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

147. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

149. Spores of which plants have chloroplast:

 
 
 
 

150. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

152. 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:

 
 
 
 

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

 
 
 
 

154. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

156. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

159. The tree fern is:

 
 
 
 

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

 
 
 
 

161. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

163. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

164. In Cycas microsporangia are borne on:

 
 
 
 

165. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

167. Photosynthetic bacteria have:

 
 
 
 

168. Simple polyembryony is found in :

 
 
 
 

169. Usually, bacteria reproduce by:

 
 
 
 

170. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

175. Sexual reproduction of lichen is due to :

 
 
 
 

176. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

178. The development of Selaginella embryo is:

 
 
 
 

179. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

186. Nitrifying bacteria play an important role by converting:

 
 
 
 

187. The sori in Dryopteris are found on:

 
 
 
 

188. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

189. Selaginella differs from Moss in having:

 
 
 
 

190. Lichens reproduce by :

 
 
 
 

191. What is special feature of fern archegonia?

 
 
 
 

192. Vegetative reproduction in Cycas is by means of :

 
 
 
 

193. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

195. Chemosynthetic bacteria are:

 
 
 
 

196. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

203. Spermatophyta are characterized by producing:

 
 
 
 

204.

205. Saccharomyces is well known for:

 
 
 
 

206. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Facultative saprophyte is:

 
 
 
 

210. Embryo formation is not known in :

 
 
 
 

211. Lichens are pioneers of vegetation in a :

 
 
 
 

212. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

218. Which of the following is a monocot?

 
 
 
 

219. Fertility of the soil is increased by:

 
 
 
 

220. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Triple antigen injection or vaccine are for:

 
 
 
 

224. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

229. Yeast is a source of:

 
 
 
 

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

 
 
 
 

231. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

233. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

235. The central part of Funaria axis is :

 
 
 
 

236. Each chloroplast in Spirogyra bears :

 
 
 
 

237. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. Metulae are found in:

 
 
 
 

242. Pollination in Cycas takes place by :

 
 
 
 

243. Winged seeds are found in :

 
 
 
 

244. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. The rhizoids of Funaria are :

 
 
 
 

248. In a diplontic life cycle:

 
 
 
 

249. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. The fungi that grow on wood are called:

 
 
 
 

253. Which fixes atmospheric nitrogen?

 
 
 
 

254. Viroids have:

 
 
 
 

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

 
 
 
 

256. Most primitive group of vascular plants are:

 
 
 
 

257. Reproduction in Cycas takes place by :

 
 
 
 

258. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. Fruiting body of lichens is :

 
 
 
 

264. The Rhizopus is:

 
 
 
 

265. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

267. Rhizopus belongs to:

 
 
 
 

268. True sexuality is not found in:

 
 
 
 

269. The fungi used as food are:

 
 
 
 

270. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

272. Cyathia is characterized by:

 
 
 
 

273. Germination of the seed of Pinus is :

 
 
 
 

274. 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:

 
 
 
 

275. Bacteria are found everywhere, except:

 
 
 
 

276. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

278. Halophiles are the bacteria that require for growth:

 
 
 
 

279. The fungi are mostly:

 
 
 
 

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

 
 
 
 

281. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. What is a vector?

 
 
 
 

288. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

290. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

293. The root nodules of leguminous plants contain:

 
 
 
 

294. The source of litmus is :

 
 
 
 

295. Iodine is obtained from :

 
 
 
 

296. What are plasmids?

 
 
 
 

297. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

299. Banana bunchy top is caused by :

 
 
 
 

300. Which of the following is a parasitic algae?

 
 
 
 

301. The lambda phase is a:

 
 
 
 

302. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

304. Psilotum is:

 
 
 
 

305. Saccharomyces is used in:

 
 
 
 

306. Which causes red tide?

 
 
 
 

307. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

308. Absorptive nutrition is:

 
 
 
 

309. The fungi are usually:

 
 
 
 

310. Amoeba is a member of the phylum:

 
 
 
 

311. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

314. In Funaria :

 
 
 
 

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

 
 
 
 

316. The photosynthetic protists are:

 
 
 
 

317.

 

318. In Pteris, the archegonia are present:

 
 
 
 

319. The disease apple scab is caused by:

 
 
 
 

320. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

321. Pteridophytes are also known as :

 
 
 
 

322. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

324. Penicillin is obtained from:

 
 
 
 

325. Winged pollen grains are found in :

 
 
 
 

326. Which organisms are the oldest life forms?

 
 
 
 

327. Ovules are not found enclosed in ovary in :

 
 
 
 

328. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

334. Acellular slime mold is/are:

 
 
 
 

335. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

341. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

343. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

345. Saccharomyces ludwigii ascus produces:

 
 
 
 

346. The vascular bundles of Cycas stem are :

 
 
 
 

347. In moss, peristomial teeth are:

 
 
 
 

348. Bacteria differ from viruses in being sensitive to:

 
 
 
 

349. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. The gametophyte of fern is as:

 
 
 
 

353. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

355. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

357. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

362. Cryptogams include :

 
 
 
 

363. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

365. Which of the following are absent in Mycoplasma?

 
 
 
 

366. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

368. Funaria is :

 
 
 
 

369. Meristele of fern is:

 
 
 
 

370. Redness of red sea is due to :

 
 
 
 

371. Nannandria are:

 
 
 
 

372. The coralloid roots are :

 
 
 
 

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

 
 
 
 

374. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

380. Pollination in Pinus is :

 
 
 
 

381. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

383. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

385. LSD is:

 
 
 
 

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

 
 
 
 

387. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

391. Bacteria are placed under:

 
 
 
 

392. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

394. Black rust of wheat is caused by:

 
 
 
 

395. Which is a tautonym?

 
 
 
 

396. Who named prion?

 
 
 
 

397. The flagella of Chlamydomonas are:

 
 
 
 

398. Ectocarpus produces:

 
 
 
 

399. 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?

 
 
 
 

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

 
 
 
 

401. Red rot of sugarcane is caused by :

 
 
 
 

402. Most primitive kind of flower is represented by:

 
 
 
 

403. The Rhizopus gametes are formed in:

 
 
 
 

404. The gametophyte of fern bears:

 
 
 
 

405. Male gametophyte of Selaginella is found:

 
 
 
 

406. Enteric bacteria are those bacteria that live:

 
 
 
 

407. The spur of Pinus roxburghii has :

 
 
 
 

408. Penicillin was discovered by:

 
 
 
 

409. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

411. Pinus gerardiana is :

 
 
 
 

412. Small epidermal swellings due to infection are called :

 
 
 
 

413. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

423. Cocci types of bacteria are:

 
 
 
 

424. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

429. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

431. Lichens form the first community in

 
 
 
 

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

 
 
 
 

433. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

435. The most primitive vascular plants is:

 
 
 
 

436. The orders generally have the uniform endings:

 
 
 
 

437. How a fern differs from a moss?

 
 
 
 

438. Ergot is obtained from :

 
 
 
 

439. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

441. Mostly type of zygospore in Ulothrix is:

 
 
 
 

442. Multicellular and jacketed sex organs are found in :

 
 
 
 

443. Citrus canker is caused by :

 
 
 
 

444. Longest known virus is:

 
 
 
 

445. Green plants are classified as:

 
 
 
 

446. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

448. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Green plants are classified as :

 
 
 
 

452. Pinus is:

 
 
 
 

453. A gill of Agaricus:

 
 
 
 

454. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

456. Sometimes the bacterial cell is enclosed in:

 
 
 
 

457. The sexual reproductive organs in Rhizopus are:

 
 
 
 

458. Pseudomycelium is found in:

 
 
 
 

459. Cell walls of Gram-positive bacteria contain:

 
 
 
 

460. Coenogamete is found in:

 
 
 
 

461. Total parasites belong to:

 
 
 
 

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

 
 
 
 

463. Pasteur is famous for his:

 
 
 
 

464. Black rust of wheat is caused by:

 
 
 
 

465. First animal pathogenic virus was discovered by:

 
 
 
 

466. The male gametes of Pinus are :

 
 
 
 

467. Which of the following lichens is harmful?

 
 
 
 

468. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

470. Typhoid in man is caused by:

 
 
 
 

471. Pollination drop is:

 
 
 
 

472. Economic importance of bacteria lies in their being:

 
 
 
 

473. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

475. Infective part of virus was discovered by:

 
 
 
 

476. In Cycas:

 
 
 
 

477. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

479. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

481. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

483. Yeast belongs to class:

 
 
 
 

484. The similarity between cyanobacteria and bacteria:

 
 
 
 

485. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

487. The mycelium of Rhizopus is:

 
 
 
 

488. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. Funaria can be differentiated from Cycas :

 
 
 
 

494. Little leaf disease of Brinjal is caused by:

 
 
 
 

495. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

497. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

499. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

503. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

505. Late blight of potato is caused by :

 
 
 
 

506. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. The chromosomal number in:

 
 
 
 

510. How is moss different from fern?

 
 
 
 

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

 
 
 
 

512. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

514. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

516. What are Cyanobacteria?

 
 
 
 

517. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

522. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

524. Gram stain is used to:

 
 
 
 

525. What is streptomycin?

 
 
 
 

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

 
 
 
 

527. The smallest unit of classification is:

 
 
 
 

528. Majority of lichens are :

 
 
 
 

529. Red rot of sugarcane is caused by :

 
 
 
 

530. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. What is mycorrhiza?

 
 
 
 

537. What is absent in Deuteromycetes?

 
 
 
 

538. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. Some bacteria cannot be killed easily because of:

 
 
 
 

548. Which is a gametophytic tissue?

 
 
 
 

549. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Liverworts are included in :

 
 
 
 

553. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. In Gymnosperms endosperm is a:

 
 
 
 

558. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

566. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

571. Mucilaginous canals in Cycas are found in :

 
 
 
 

572. Black rust of wheat is caused by:

 
 
 
 

573. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

575. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

577. The seedless plants which possess vascular tissues are:

 
 
 
 

578. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. The disease symptom necrosis refers to :

 
 
 
 

583. Water-net is the name of:

 
 
 
 

584.

585. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

586. Which of the following statement is correct?

 
 
 
 

587.

588. Ethylene oxide is widely used to:

 
 
 
 

589. Cycas is :

 
 
 
 

590. Which is a fungicide?

 
 
 
 

591. Rhizophore of Selaginella is:

 
 
 
 

592. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

594. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

599. Reserve food in Euglena is:

 
 
 
 

600. The ascus of yeast contains:

 
 
 
 

601. Heterocysts are found in :

 
 
 
 

602. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. The order generally ends with:

 
 
 
 

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

 
 
 
 

611. All protozoans possess:

 
 
 
 

612. In Cycas the fertilization is:

 
 
 
 

613. Which group of algae have an incipient nucleus?

 
 
 
 

614. Anoxygenic photosynthesis occurs in:

 
 
 
 

615. The archegonia of Selaginella are differentiated by:

 
 
 
 

616. Antibiotic has been extracted from :

 
 
 
 

617. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

619. Woody climbers are known as :

 
 
 
 

620. Who discovered cyanophages?

 
 
 
 

621. Bacteriophage consists of:

 
 
 
 

622. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

624. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. The phloem of vascular system of Cycas is :

 
 
 
 

628. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

634. Facultative parasite is:

 
 
 
 

635. Which lichen is called Reindeer moss?

 
 
 
 

636. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. In moss, sporophyte is formed on:

 
 
 
 

641. The megaspore of Selaginella on germination produces:

 
 
 
 

642. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

644. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. Heterospory is the production of:

 
 
 
 

652. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

654. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. Bacteria were first discovered by:

 
 
 
 

658. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Lichen show :

 
 
 
 

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

 
 
 
 

663. Mycoplasma is different from bacteria due to:

 
 
 
 

664. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. Agar-agar is obtained from:

 
 
 
 

668. Parmelia belongs to :

 
 
 
 

669. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

672. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Disease resistant plant varieties can be produced by :

 
 
 
 

677. Which of the following shows heterotrichous habit?

 
 
 
 

678. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

683. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Citrus canker is caused by:

 
 
 
 

687. The largest alga is:

 
 
 
 

688. Mycoplasma are sensitive to:

 
 
 
 

689. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

694. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

696. The prothallus of fern represents the plant:

 
 
 
 

697. Soil fertility is lost by the activities of:

 
 
 
 

698. Which is not true for Escherichia coli?

 
 
 
 

699. The role of meiosis is for:

 
 
 
 

700. Smallpox is caused by:

 
 
 
 

701. The plants of Funaria grow :

 
 
 
 

702. Fern plants are:

 
 
 
 

703. Ulothrix produces :

 
 
 
 

704. Placenta in fern is:

 
 
 
 

705. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

710. The chief characteristic of bryophyta is that :

 
 
 
 

711. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Pythium debaryanum is the causative agent of:

 
 
 
 

716. Spirogyra represents the :

 
 
 
 

717. Sleeping sickness disease in man is caused by:

 
 
 
 

718. The prothallus of fern is:

 
 
 
 

719. Some diseases caused by bacteria are:

 
 
 
 

720. Roots are absent in :

 
 
 
 

721. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

725. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Which of the following are included in Tracheophyta?

 
 
 
 

729. Gymnosperms could also be called as:

 
 
 
 

730. Why is Cycas called a living fossil?

 
 
 
 

731. Which is an exception to cell theory?

 
 
 
 

732. Select the correct statement: (NEET 2016)

 
 
 
 

733. Which is the correct statement about Selaginella?

 
 
 
 

734. Cycas is:

 
 
 
 

735. Which of the following is true for Selaginella?

 
 
 
 

736. The upper region of moss capsule is :

 
 
 
 

737. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

739. Iodine is obtained from:

 
 
 
 

740. Lichens are the indicator of pollution :

 
 
 
 

741. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

743. Mycoplasma are:

 
 
 
 

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

 
 
 
 

745. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

747. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. The archegonia in Selaginella develop on:

 
 
 
 

753. In a bacteriophage, DNA is present in:

 
 
 
 

754. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

757. The microsporophylls on the cone of Cycas are :

 
 
 
 

758. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

760. The sporangium of fern contains nearly:

 
 
 
 

761. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

763. Nitrogen-fixing bacteria may be located:

 
 
 
 

764. John Hutchinson divided dicots into two divisions:

 
 
 
 

765. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Bryophyta have a special character from other plants:

 
 
 
 

769. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

770. Interferon is a:

 
 
 
 

771. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

773. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

778. Aflatoxin is produced by:

 
 
 
 

779. Ovary is absent in:

 
 
 
 

780. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

788. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

793. Etiology includes the study of :

 
 
 
 

794. Among the algae kelps are :

 
 
 
 

795. The sporangiophores in Rhizopus are:

 
 
 
 

796. Leprosy is caused by:

 
 
 
 

797. Select the wrong statement:

 
 
 
 

798. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

800. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

803. Cyanophage is a virus that attacks:

 
 
 
 

804. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

805. The term stele was given by:

 
 
 
 

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

 
 
 
 

807. Heterospory and ligulate leaves are a feature of:

 
 
 
 

808. Protozoans are considered animals because these are:

 
 
 
 

809. White rust of crucifers is caused by:

 
 
 
 

810. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

813. The stele of Dryopteris is a:

 
 
 
 

814. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

816. In moss, conducting tissue is made up of

 
 
 
 

817. Desired type of Cycas can be grown by:

 
 
 
 

818. Virion refers to:

 
 
 
 

819. The DNA of E coli is:

 
 
 
 

820. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

822. Which of the following are included in Tracheophyta?

 
 
 
 

823. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

824. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

826. Discovery of penicillin was based on:

 
 
 
 

827. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

829. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

831. Cycas is similar to a mustard plant :

 
 
 
 

832. Milk is converted to curd by:

 
 
 
 

833. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. . Tapetum develops in:

 
 
 
 

840. Maximum diversity of life forms occurs in :

 
 
 
 

841. Embryophyta includes :

 
 
 
 

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

 
 
 
 

843. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

848. Special feature of pollen grains of Pinus is :

 
 
 
 

849. Fairy ring is the name given to:

 
 
 
 

850. Lichens reproduce by :

 
 
 
 

851. Number of capsomeres forming capsid of TMV is:

 
 
 
 

852. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

854. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

856. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Bivalved siliceous shell or frustule occur in: