Quiz_Random

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

 
 
 
 

2. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

3. 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:

 
 
 
 

4. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

6. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Liverworts are included in :

 
 
 
 

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

 
 
 
 

11. The development of sporangium in Selaginella is:

 
 
 
 

12. Funaria are commonly found :

 
 
 
 

13. Pteridophyta are also called:

 
 
 
 

14. Which is a gametophytic tissue?

 
 
 
 

15. Common phycobiont in a lichen is :

 
 
 
 

16. Rhizopus belongs to:

 
 
 
 

17. Cap cells are found in the filament of:

 
 
 
 

18. Polystelic condition is found in:

 
 
 
 

19. Which is a tautonym?

 
 
 
 

20. Mycoplasma is different from bacteria due to:

 
 
 
 

21. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

22. Cellular slime mold is:

 
 
 
 

23. In Herpes virus DNA is:

 
 
 
 

24. 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:

 
 
 
 

25. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

27. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

29. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

31. In Gymnocarpeae the fruiting body is :

 
 
 
 

32. Small epidermal swellings due to infection are called :

 
 
 
 

33. The stele of Dryopteris is a:

 
 
 
 

34. Woody climbers are known as :

 
 
 
 

35. The genetic material of poxvirus is:

 
 
 
 

36. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Some biologists have used the term Mycetozoa for:

 
 
 
 

40. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

42. Sporophyte of fern is:

 
 
 
 

43. Placenta in fern is:

 
 
 
 

44. The coralloid roots are :

 
 
 
 

45. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

47. Cleavage polyembryony is found in :

 
 
 
 

48. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Pinus is:

 
 
 
 

54. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

56. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

58. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

60. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. One of the distinctive feature of Spirogyra is :

 
 
 
 

64. Genetic material of TMV is:

 
 
 
 

65. Viruses have:

 
 
 
 

66. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

68. Fern prothallus produces:

 
 
 
 

69. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Maximum diversity of life forms occurs in :

 
 
 
 

77. Nitrogen-fixing bacteria may be located:

 
 
 
 

78. The lambda phase is a:

 
 
 
 

79. Standard size of a herbarium sheet is:

 
 
 
 

80. Protistan algae obtain their food as:

 
 
 
 

81. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. The most important property of yeast is:

 
 
 
 

87. Little leaf disease of Brinjal is caused by:

 
 
 
 

88. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. TMV was isolated in crystalline form by:

 
 
 
 

92. Who discovered streptomycin?

 
 
 
 

93. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

95. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. The Rhizopus is:

 
 
 
 

108. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Male gametes in Dryopteris are:

 
 
 
 

112. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

117. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

122. Which of the following is true for Selaginella?

 
 
 
 

123. Pinus gerardiana is :

 
 
 
 

124. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

126. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

127. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. Ergot of rye is caused by:

 
 
 
 

131. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

135. Banana bunchy top is caused by :

 
 
 
 

136. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

138.

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

 
 
 
 

140. Lichens are ecologically important because :

 
 
 
 

141. Longest known virus is:

 
 
 
 

142. Choose the correct statement about Spirogyra:

 
 
 
 

143. Ovary is absent in:

 
 
 
 

144. Funaria is a Bryophyta because :

 
 
 
 

145. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

147. Chief constituents of bordeaux mixture are :

 
 
 
 

148. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

150. Milk is converted to curd by:

 
 
 
 

151. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

153. The source of litmus is :

 
 
 
 

154. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

162. Diploxylic vascular bundles are found in:

 
 
 
 

163. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

164. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

168. NBG of Lucknow is now named as:

 
 
 
 

169. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

171. Pythium debaryanum is the causative agent of:

 
 
 
 

172. Protozoans are considered animals because these are:

 
 
 
 

173. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

175. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

176. Pasteurized milk is:

 
 
 
 

177. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

182. Fern plants are:

 
 
 
 

183. Some diseases caused by bacteria are:

 
 
 
 

184. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

198. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Which is absent from the xylem of Cycas?

 
 
 
 

202. Metulae are found in:

 
 
 
 

203. Acellular slime mold is/are:

 
 
 
 

204. LSD is:

 
 
 
 

205. Generic name of mango is:

 
 
 
 

206. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

208. Heterotrichous habit means :

 
 
 
 

209. The chloroplast of Chlamydomonas are:

 
 
 
 

210. The sporangium of fern contains nearly:

 
 
 
 

211. Yeast is a source of:

 
 
 
 

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

 
 
 
 

213. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

215. Linnaeus is credited with introducing:

 
 
 
 

216. In Funaria :

 
 
 
 

217. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

219. Economic importance of bacteria lies in their being:

 
 
 
 

220. Smallpox is caused by:

 
 
 
 

221. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

227. Enzymes are absent in:

 
 
 
 

228. The prothallus of fern is:

 
 
 
 

229. In moss, stomata are found:

 
 
 
 

230. Isomorphic type alternation of generation is found in:

 
 
 
 

231. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

233. The leaf of Cycas shows:

 
 
 
 

234.

235. The microsporophylls on the cone of Cycas are :

 
 
 
 

236. Virion refers to:

 
 
 
 

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

 
 
 
 

238. The nucleus of bacteria is:

 
 
 
 

239. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

245. The photosynthetic protists are:

 
 
 
 

246. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

248. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

250. Ethylene oxide is widely used to:

 
 
 
 

251. Majority of lichens are :

 
 
 
 

252. The flagella of Chlamydomonas are:

 
 
 
 

253. Wine turns sour because of:

 
 
 
 

254. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

256. Which class of Protozoa includes all parasitic forms?

 
 
 
 

257. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

259. Citrus canker is caused by:

 
 
 
 

260. Club moss and Peat moss belong to:

 
 
 
 

261. Bacteria which are spherical are called:

 
 
 
 

262. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Ginkgo biloba is a:

 
 
 
 

266. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

271. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

273. Red rot of sugarcane is caused by:

 
 
 
 

274. Bivalved siliceous shell or frustule occur in:

 
 
 
 

275. Which of the following does not contain chlorophyll?

 
 
 
 

276. The most primitive vascular plants is:

 
 
 
 

277. Which is not true for Escherichia coli?

 
 
 
 

278. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Select the wrong statement:

 
 
 
 

282. The disease symptom necrosis refers to :

 
 
 
 

283. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. Most of the lichens are composed of :

 
 
 
 

287. Fruiting body of lichens is :

 
 
 
 

288. Germination of the seed of Pinus is :

 
 
 
 

289. The rhizoids of Funaria are :

 
 
 
 

290. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

293. Most primitive kind of flower is represented by:

 
 
 
 

294. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

296. Antibiotics cure the disease by:

 
 
 
 

297. Viruses are commonly transmitted in plants through:

 
 
 
 

298. The upper region of moss capsule is :

 
 
 
 

299. Saccharomyces ludwigii ascus produces:

 
 
 
 

300. In Cycas:

 
 
 
 

301. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

303. Proembryo in Pinus is :

 
 
 
 

304. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

306. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. Photoautotrophic bacteria have:

 
 
 
 

312. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

314.

 

315. Cycas is :

 
 
 
 

316. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Coenogamete is found in:

 
 
 
 

322. Which of the following statements is not correct?

 
 
 
 

323. Which is an exception to cell theory?

 
 
 
 

324. Fern phloem lacks:

 
 
 
 

325. Lichens show :

 
 
 
 

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

 
 
 
 

327. Black rust of wheat is caused by:

 
 
 
 

328. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

330. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

332. Spores of which plants have chloroplast:

 
 
 
 

333. 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:

 
 
 
 

334. Yeast belongs to class:

 
 
 
 

335. Pneumonia is caused by:

 
 
 
 

336. Heterosporous pteridophytes always form:

 
 
 
 

337. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. Early blight of potato is caused by:

 
 
 
 

347. Pasteurization of milk involves heating for:

 
 
 
 

348. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. Citrus canker is caused by :

 
 
 
 

353. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

355. Most primitive embryophytes are placed in:

 
 
 
 

356. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. Broad spectrum antibiotic is, which:

 
 
 
 

361. What is streptomycin?

 
 
 
 

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

 
 
 
 

363. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. The similarity between cyanobacteria and bacteria:

 
 
 
 

367. Most common type of conjugation in Spirogyra is :

 
 
 
 

368. Anoxygenic photosynthesis occurs in:

 
 
 
 

369. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. What is absent in Deuteromycetes?

 
 
 
 

373. The fungi that grow on wood are called:

 
 
 
 

374. Multicellular and jacketed sex organs are found in :

 
 
 
 

375. Which is a fungicide?

 
 
 
 

376. Mucilaginous canals in Cycas are found in :

 
 
 
 

377. Which of the following is a parasitic algae?

 
 
 
 

378. All archaebacteria lack:

 
 
 
 

379. The archegonia of Selaginella are differentiated by:

 
 
 
 

380. Who discovered heterothallism in fungi?

 
 
 
 

381. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Photosynthetic bacteria have:

 
 
 
 

387. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. What is the role of nitrifying bacteria?

 
 
 
 

391. Which condition is found in Cycas?

 
 
 
 

392. The ferns are usually found:

 
 
 
 

393. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

395. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

400. The phloem of vascular system of Cycas is :

 
 
 
 

401. The vascular bundles of Cycas stem are :

 
 
 
 

402. Acetobacter is useful in:

 
 
 
 

403. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

405. Seeds are characteristically found in :

 
 
 
 

406. Mycoplasma are:

 
 
 
 

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

 
 
 
 

408. Who among the following discovered virus?

 
 
 
 

409. Green plants are classified as :

 
 
 
 

410. The gametophyte of fern bears:

 
 
 
 

411. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. The term stele was given by:

 
 
 
 

419. Cycas is similar to a mustard plant :

 
 
 
 

420. Viroids have:

 
 
 
 

421. The fungi are usually:

 
 
 
 

422. Most of the algae are :

 
 
 
 

423. Parmelia belongs to :

 
 
 
 

424. Ectocarpus produces:

 
 
 
 

425. True sexuality is not found in:

 
 
 
 

426. Cyathia is characterized by:

 
 
 
 

427. All protozoans possess:

 
 
 
 

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

 
 
 
 

429. To which country Antony van Leeuwenhoek belong?

 
 
 
 

430. Pollination in Pinus is :

 
 
 
 

431. The DNA of E coli is:

 
 
 
 

432. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

439. First animal pathogenic virus was discovered by:

 
 
 
 

440. The leafy fern plant represents the:

 
 
 
 

441. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

448. Bacteria are considered to be plants because they:

 
 
 
 

449. Pasteur is famous for his:

 
 
 
 

450. Which organisms are the oldest life forms?

 
 
 
 

451. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

453. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

455. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Which one of the following statement is wrong?

 
 
 
 

463. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

465. Endemic plants are characterised by their:

 
 
 
 

466. Cycas is:

 
 
 
 

467. Most primitive group of vascular plants are:

 
 
 
 

468. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

470. The male gametes of Pinus are :

 
 
 
 

471. Absorptive nutrition is:

 
 
 
 

472. 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:

 
 
 
 

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

 
 
 
 

474. Bryophyta have been placed in cryptogams because:

 
 
 
 

475. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

480. Bryophyta have a special character from other plants:

 
 
 
 

481. The zoospores of Ulothrix are :

 
 
 
 

482. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Heterospory is the production of:

 
 
 
 

486. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. Roots are absent in :

 
 
 
 

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

 
 
 
 

491. Why is Cycas called a living fossil?

 
 
 
 

492. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. Which is a redwood tree?

 
 
 
 

497. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

506. Black rust of wheat is caused by:

 
 
 
 

507. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Mycoplasma contains:

 
 
 
 

511. The sori in Dryopteris are found on:

 
 
 
 

512. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

514. Aflatoxin is produced as a product in :

 
 
 
 

515. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

517. Facultative saprophyte is:

 
 
 
 

518. Gram stain is used to:

 
 
 
 

519. 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:

 
 
 
 

520. What are plasmids?

 
 
 
 

521. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

523. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. An Hfr bacterium is one that contains:

 
 
 
 

527. The development of Selaginella embryo is:

 
 
 
 

528. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

530. Tautonyms are illegitimate in:

 
 
 
 

531. In moss, peristomial teeth are:

 
 
 
 

532. Rice, pea, potato are :

 
 
 
 

533. Most resistant spore in bacteria is:

 
 
 
 

534. Ovules are not found enclosed in ovary of:

 
 
 
 

535. Which have the largest antherozoid?

 
 
 
 

536. Spirogyra represents the :

 
 
 
 

537. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

539. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. Cyanophage is a virus that attacks:

 
 
 
 

546. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

550. Ovules are not found enclosed in ovary in :

 
 
 
 

551. The zygospore in Rhizopus on germination forms:

 
 
 
 

552. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

554. Winged seeds are found in :

 
 
 
 

555. Total parasites belong to:

 
 
 
 

556. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

558. The mode of nutrition of bacteria is usually:

 
 
 
 

559. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

561. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. In Cycas which structure is equivalent to stamen?

 
 
 
 

566. Lichen show :

 
 
 
 

567. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

569. Iodine is obtained from:

 
 
 
 

570. Lichens reproduce by :

 
 
 
 

571. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Sexual reproduction in Rhizopus is by:

 
 
 
 

575. Bacteria were first discovered by:

 
 
 
 

576. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

579. Penicillin was discovered by:

 
 
 
 

580. Fruits are not found in :

 
 
 
 

581. Funaria is :

 
 
 
 

582. Plasmids are:

 
 
 
 

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

 
 
 
 

584. Interferon is a:

 
 
 
 

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

 
 
 
 

586. Ulothrix produces :

 
 
 
 

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

 
 
 
 

588. Facultative parasite is:

 
 
 
 

589. Cycas is different from mango in :

 
 
 
 

590. Penicillin is obtained from:

 
 
 
 

591. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

593. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

595. Black rust of wheat is caused by:

 
 
 
 

596. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

603. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

605. Leprosy is caused by:

 
 
 
 

606. Protists which are diploid reproduce sexually by:

 
 
 
 

607. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

609. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. The sporophyte of Riccia is :

 
 
 
 

613. How is moss different from fern?

 
 
 
 

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

 
 
 
 

615. Which of the following is a heterosporous pteridophyte?

 
 
 
 

616. Which of the following have algal zone?

 
 
 
 

617. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

623. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

625. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

627. Select the wrong statement:

 
 
 
 

628. The largest alga is:

 
 
 
 

629. Which is an edible fungus?

 
 
 
 

630. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

632. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

634. Which part of Riccia bears nurse cells?

 
 
 
 

635. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

636. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

638. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

640. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

642. Vascular tissue is found in :

 
 
 
 

643. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. The largest known bacterium is:

 
 
 
 

650. Ovary is absent in :

 
 
 
 

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

 
 
 
 

652. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. Transfusion tissue is present in the leaflet of:

 
 
 
 

657. Mycoplasma was discovered by:

 
 
 
 

658. Bacteria are placed under:

 
 
 
 

659. Desired type of Cycas can be grown by:

 
 
 
 

660. Which fixes atmospheric nitrogen?

 
 
 
 

661. The roots of Cycas are :

 
 
 
 

662. Red rot of sugarcane is caused by :

 
 
 
 

663. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

666. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

668. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Circular DNA is seen in:

 
 
 
 

677. How a fern differs from a moss?

 
 
 
 

678. The young leaves of Cycas have :

 
 
 
 

679. Fern prothallus is:

 
 
 
 

680. Which among the following is a shrub?

 
 
 
 

681. Spermatophyta are characterized by producing:

 
 
 
 

682. Pollination drop is:

 
 
 
 

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

 
 
 
 

684. The tree fern is:

 
 
 
 

685. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

687. The archegonia in Selaginella develop on:

 
 
 
 

688. Who named prion?

 
 
 
 

689. Which one of the following is a monocot?

 
 
 
 

690. Saccharomyces is well known for:

 
 
 
 

691. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

697. The sporangia of Selaginella are attached:

 
 
 
 

698. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

700. Chemosynthetic bacteria are:

 
 
 
 

701. Lichens are the indicator of pollution :

 
 
 
 

702. The fungi used as food are:

 
 
 
 

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

 
 
 
 

704. Rhizoids of Riccia are :

 
 
 
 

705. The spermatozoids of Cycas are :

 
 
 
 

706. Botulism is a:

 
 
 
 

707. Halophiles are the bacteria that require for growth:

 
 
 
 

708. The chief characteristic of bryophyta is that :

 
 
 
 

709. Azolla growing in paddy fields helps in:

 
 
 
 

710. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

712. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Embryophyta includes :

 
 
 
 

716. Mycoplasma are sensitive to:

 
 
 
 

717. Zoogametes are not found in:

 
 
 
 

718. Which of the following are absent in Mycoplasma?

 
 
 
 

719. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

721. Asexual reproductive body of Volvox is called:

 
 
 
 

722. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

724. Embryophyta includes:

 
 
 
 

725. Late blight of potato is caused by:

 
 
 
 

726. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

728. Detailed study of bacteriophage was made by:

 
 
 
 

729. Simple polyembryony is found in :

 
 
 
 

730. Bacteria are found everywhere, except:

 
 
 
 

731. In tracheophyta:

 
 
 
 

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

 
 
 
 

733. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

735. The orders generally have the uniform endings:

 
 
 
 

736. Water bloom is generally caused by :

 
 
 
 

737. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

739. The fern plant is:

 
 
 
 

740. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

741. Pollination in Cycas takes place by :

 
 
 
 

742. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

746. Which of the following lichens is harmful?

 
 
 
 

747. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

749. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

751. Photosynthetic protists belong to:

 
 
 
 

752. Which of the following applies to Selaginella?

 
 
 
 

753. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

757. Cryptogams include :

 
 
 
 

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

 
 
 
 

759. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. The role of meiosis is for:

 
 
 
 

763. Climbers are found in genus:

 
 
 
 

764. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

765. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

767. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

769. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Number of capsomeres forming capsid of TMV is:

 
 
 
 

773. Reproduction in Rhizopus is:

 
 
 
 

774. Sometimes the bacterial cell is enclosed in:

 
 
 
 

775. Helotism word is used for the symbiosis between :

 
 
 
 

776. A gill of Agaricus:

 
 
 
 

777. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

781. Rhizopus and yeast are usually:

 
 
 
 

782. 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?

 
 
 
 

783. The leaves of Funaria are :

 
 
 
 

784. 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?

 
 
 
 

785. Methanogens belong to:

 
 
 
 

786. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. The seedless plants which possess vascular tissues are:

 
 
 
 

791. Ovules are not found enclosed in ovary in :

 
 
 
 

792. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

801. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. Which of the following is true for viruses?

 
 
 
 

806. Most primitive embryophytes are placed in :

 
 
 
 

807. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

809. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

811. Meiosis in Ulothrix takes place:

 
 
 
 

812. The tallest moss in the world is :

 
 
 
 

813. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

815. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

816. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

818. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

820. Lichens are indicators of :

 
 
 
 

821. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. In Cycas microsporangia are borne on:

 
 
 
 

831. Lichens are pioneers of vegetation in a :

 
 
 
 

832. White rust of crucifers is caused by:

 
 
 
 

833. The chief characteristic of class Ascomycetes is:

 
 
 
 

834. Oswald Tippo’s classification was based on :

 
 
 
 

835. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

837.

838. Meristele of fern is:

 
 
 
 

839. Nannandria are:

 
 
 
 

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

 
 
 
 

841. Quarantine regulations are concerned with:

 
 
 
 

842. The order generally ends with:

 
 
 
 

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

 
 
 
 

844. Spirogyra differs from moss protonema in having :

 
 
 
 

845. The megaspore of Selaginella on germination produces:

 
 
 
 

846. The spur of Pinus roxburghii has :

 
 
 
 

847. 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?

 
 
 
 

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

 
 
 
 

849. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

851. The alga, Spirogyra are found in :

 
 
 
 

852. Gametophyte is the main plant body in :

 
 
 
 

853. Psilotum is:

 
 
 
 

854. The smallest unit of classification is:

 
 
 
 

855. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. The megasporangium of Selaginella is:

 
 
 
 

860. What is a vector?

 
 
 
 

861. In Pteris, the archegonia are present:

 
 
 
 

862. Select the correct statement: (NEET 2016)

 
 
 
 

863. Agar-agar is obtained from:

 
 
 
 

864. The gametophyte of fern is as: