Quiz_Random

1. The largest known bacterium is:

 
 
 
 

2. Which lichen is called Reindeer moss?

 
 
 
 

3. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

5. The spur of Pinus roxburghii has :

 
 
 
 

6. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

8. Germ theory of disease was proposed by:

 
 
 
 

9. The microsporophylls on the cone of Cycas are :

 
 
 
 

10. Which of the following are included in Tracheophyta?

 
 
 
 

11. The fungi used as food are:

 
 
 
 

12. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

14. The disease symptom necrosis refers to :

 
 
 
 

15. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

22. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

24. The smallest bacterium is:

 
 
 
 

25. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Mycoplasma was discovered by:

 
 
 
 

29. Acellular slime mold is/are:

 
 
 
 

30. The gametophyte of moss has distinct phases :

 
 
 
 

31. The central part of Funaria axis is :

 
 
 
 

32. Protozoans are considered animals because these are:

 
 
 
 

33. The male gametes of Pinus are :

 
 
 
 

34. Rhizoids of Riccia are :

 
 
 
 

35. Vegetative reproduction in Cycas is by means of :

 
 
 
 

36. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

38. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41.

 

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

 
 
 
 

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

 
 
 
 

44. Which of the following are absent in Mycoplasma?

 
 
 
 

45. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

47. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

49. What is absent in Deuteromycetes?

 
 
 
 

50. In tracheophyta:

 
 
 
 

51. Funaria is :

 
 
 
 

52. Funaria can be differentiated from Cycas :

 
 
 
 

53. Mixed cropping helps :

 
 
 
 

54. The photosynthetic protists are:

 
 
 
 

55. Heterosporous pteridophytes always form:

 
 
 
 

56. Streptomyces falls under:

 
 
 
 

57. Amoeba is a member of the phylum:

 
 
 
 

58. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

60. Penicillin is obtained from:

 
 
 
 

61. Vascular cryptogam is the term used for :

 
 
 
 

62. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

67. Red rot of sugarcane is caused by :

 
 
 
 

68. Bacteria differ from viruses in being sensitive to:

 
 
 
 

69. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

74. Fruits are not found in:

 
 
 
 

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

 
 
 
 

76. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Selaginella differs from Moss in having:

 
 
 
 

83. Longest known virus is:

 
 
 
 

84. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

86. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

88. The vascular bundles of Cycas stem are :

 
 
 
 

89. The megaspore of Selaginella on germination produces:

 
 
 
 

90. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. How a fern differs from a moss?

 
 
 
 

99. The prothallus of fern represents the plant:

 
 
 
 

100. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

101. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

103. In Selaginella, the microsporangia are:

 
 
 
 

104. Which among the following is a shrub?

 
 
 
 

105. Chemosynthetic bacteria are:

 
 
 
 

106. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

110. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

112. Halophiles are the bacteria that require for growth:

 
 
 
 

113. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. The source of litmus is :

 
 
 
 

118. Which is a fungicide?

 
 
 
 

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

 
 
 
 

120. Bacteria growing on synthetic medium are called:

 
 
 
 

121. Photosynthetic protists belong to:

 
 
 
 

122. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

124. Which part of Riccia bears nurse cells?

 
 
 
 

125. Multicellular and jacketed sex organs are found in :

 
 
 
 

126. Late blight of potato is caused by:

 
 
 
 

127. Red rot of sugarcane is caused by :

 
 
 
 

128. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. What is special feature of fern archegonia?

 
 
 
 

135. The rhizoids of Funaria are :

 
 
 
 

136. Spirogyra differs from moss protonema in having :

 
 
 
 

137. The ferns are usually found:

 
 
 
 

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

 
 
 
 

139. True sexuality is not found in:

 
 
 
 

140. Small epidermal swellings due to infection are called :

 
 
 
 

141. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

143. Cellular slime mold is:

 
 
 
 

144. Photoautotrophic bacteria have:

 
 
 
 

145. Embryophyta includes :

 
 
 
 

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

 
 
 
 

147. Number of capsomeres forming capsid of TMV is:

 
 
 
 

148. Which of the following is true for viruses?

 
 
 
 

149. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

155. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Nitrogen-fixing bacteria may be located:

 
 
 
 

159. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

161. The leaves of Funaria are :

 
 
 
 

162. Water-net is the name of:

 
 
 
 

163. Lichen show :

 
 
 
 

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

 
 
 
 

165. Absorptive nutrition is:

 
 
 
 

166. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

175. Which is not true for Escherichia coli?

 
 
 
 

176. Disease resistant plant varieties can be produced by :

 
 
 
 

177. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

179. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

181. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

189. Funaria are commonly found :

 
 
 
 

190. 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:

 
 
 
 

191. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Yeast belongs to class:

 
 
 
 

195. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

197. The truncated cone of HIV consists of:

 
 
 
 

198. Cycas plant in appearance resembles :

 
 
 
 

199. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. Black rust of wheat is caused by:

 
 
 
 

204. Fruits are not found in :

 
 
 
 

205. Mostly type of zygospore in Ulothrix is:

 
 
 
 

206. Heterospory is the production of:

 
 
 
 

207. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

210. Majority of lichens are :

 
 
 
 

211. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

212. In Gymnocarpeae the fruiting body is :

 
 
 
 

213. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. Pinus is:

 
 
 
 

217. Choose the correct statement about Spirogyra:

 
 
 
 

218.

219. The group algae possesses representatives belonging to kingdom:

 
 
 
 

220. Germination of the seed of Pinus is :

 
 
 
 

221. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

229. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

231. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

233. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. Sleeping sickness disease in man is caused by:

 
 
 
 

238. Infective part of virus was discovered by:

 
 
 
 

239. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

241. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

243. Bacteria are considered to be plants because they:

 
 
 
 

244. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

246. Protists which are diploid reproduce sexually by:

 
 
 
 

247. Funaria is a Bryophyta because :

 
 
 
 

248. The fungi are usually:

 
 
 
 

249. Mycoplasmas are not viruses in nature because:

 
 
 
 

250. Ulothrix produces :

 
 
 
 

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

 
 
 
 

252. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

254. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

256. Cocci types of bacteria are:

 
 
 
 

257. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. To which class Riccia belongs :

 
 
 
 

263. Green plants are classified as:

 
 
 
 

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

 
 
 
 

265. The role of meiosis is for:

 
 
 
 

266. Which is a redwood tree?

 
 
 
 

267. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

272. The orders generally have the uniform endings:

 
 
 
 

273. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. The nucleus of bacteria is:

 
 
 
 

278. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

280. Banana bunchy top is caused by :

 
 
 
 

281. Lichens are ecologically important because :

 
 
 
 

282. Some diseases caused by bacteria are:

 
 
 
 

283. LSD is:

 
 
 
 

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

 
 
 
 

285. Downy mildew disease is caused by :

 
 
 
 

286. Ovary is absent in :

 
 
 
 

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

 
 
 
 

288. Black rust of wheat is caused by:

 
 
 
 

289. Interferon is a:

 
 
 
 

290. Triple antigen injection or vaccine are for:

 
 
 
 

291. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. Seeds are characteristically found in :

 
 
 
 

296. The plants of Funaria grow :

 
 
 
 

297. In Cycas the fertilization is:

 
 
 
 

298. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

300. Oswald Tippo’s classification was based on :

 
 
 
 

301. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Embryophyta includes:

 
 
 
 

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

 
 
 
 

307. The upper region of moss capsule is :

 
 
 
 

308. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

310. The antherozoids of Funaria are :

 
 
 
 

311. 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:

 
 
 
 

312. Heterospory and ligulate leaves are a feature of:

 
 
 
 

313. 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:

 
 
 
 

314. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

316. Diploxylic vascular bundles are found in:

 
 
 
 

317. Mycoplasma contains:

 
 
 
 

318. The most important property of yeast is:

 
 
 
 

319.

320. Which statement is wrong in regard to bacteria?

 
 
 
 

321. The stele of Dryopteris is a:

 
 
 
 

322. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

334. The similarity between cyanobacteria and bacteria:

 
 
 
 

335. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

341. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Penicillin was discovered by:

 
 
 
 

346. In moss, sporogenous tissue arises from:

 
 
 
 

347. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

349. Gram stain is used to:

 
 
 
 

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

 
 
 
 

351. The tree fern is:

 
 
 
 

352. The sporangia of Selaginella are attached:

 
 
 
 

353. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

358. What is streptomycin?

 
 
 
 

359. The Rhizopus gametes are formed in:

 
 
 
 

360. Which causes red tide?

 
 
 
 

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

 
 
 
 

362. Sporophyte of fern is:

 
 
 
 

363. In Cycas:

 
 
 
 

364. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. 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:

 
 
 
 

369. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

371. Which one of the following statement is wrong?

 
 
 
 

372. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. Siphonogamy is found in:

 
 
 
 

377. The development of Selaginella embryo is:

 
 
 
 

378. Climbers are found in genus:

 
 
 
 

379. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

385. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

387. Reproduction in Rhizopus is:

 
 
 
 

388. Gametophyte is the main plant body in :

 
 
 
 

389. Woody climbers are known as :

 
 
 
 

390. Fern prothallus is:

 
 
 
 

391. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

393. Protistan algae obtain their food as:

 
 
 
 

394. All protozoans possess:

 
 
 
 

395. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

400. Viruses have:

 
 
 
 

401. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

403. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

404. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

406. Pasteurization of milk involves heating for:

 
 
 
 

407. Lichens are pioneers of vegetation in a :

 
 
 
 

408. Spirogyra represents the :

 
 
 
 

409. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

411. Etiology includes the study of :

 
 
 
 

412. Pseudomycelium is found in:

 
 
 
 

413. Some biologists have used the term Mycetozoa for:

 
 
 
 

414. The archegonia of Selaginella are differentiated by:

 
 
 
 

415. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

417. The genetic material of poxvirus is:

 
 
 
 

418. Mycoplasma are sensitive to:

 
 
 
 

419. Heterocysts are found in :

 
 
 
 

420. Most common type of conjugation in Spirogyra is :

 
 
 
 

421. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. The root nodules of leguminous plants contain:

 
 
 
 

425. Endemic plants are characterised by their:

 
 
 
 

426. Club moss and Peat moss belong to:

 
 
 
 

427. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. Enteric bacteria are those bacteria that live:

 
 
 
 

431. Bryophyta have a special character from other plants:

 
 
 
 

432. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

434. Cap cells are found in the filament of:

 
 
 
 

435. The chromosomal number in:

 
 
 
 

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

 
 
 
 

437. What is mycorrhiza?

 
 
 
 

438. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. The leaves of Funaria are :

 
 
 
 

444. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Sporophyte of Funaria is :

 
 
 
 

450. The chief characteristic of class Ascomycetes is:

 
 
 
 

451. Rhizopus and yeast are usually:

 
 
 
 

452. Maximum diversity of life forms occurs in :

 
 
 
 

453. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

455. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

460. The antibiotic is obtained from:

 
 
 
 

461. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

463. Most appropriate word for protozoans is:

 
 
 
 

464. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

470. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

472. The DNA of E coli is:

 
 
 
 

473. What is a vector?

 
 
 
 

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

 
 
 
 

475. Which of the following have a prokaryotic cell?

 
 
 
 

476. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. What is the role of nitrifying bacteria?

 
 
 
 

480. Oswald Tippo’s classification is:

 
 
 
 

481. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

483. Lichens show :

 
 
 
 

484. The Rhizopus is:

 
 
 
 

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

 
 
 
 

486. The sporophyte of Riccia is :

 
 
 
 

487. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

489. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

491. The smallest unit of classification is:

 
 
 
 

492. Coenogamete is found in:

 
 
 
 

493. Asexual reproductive body of Volvox is called:

 
 
 
 

494. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Reproduction in Cycas takes place by :

 
 
 
 

499. Pollination drop is:

 
 
 
 

500. The sporophyte of Riccia is represented by :

 
 
 
 

501. In binomial system most of the words are:

 
 
 
 

502. Cleavage polyembryony is found in :

 
 
 
 

503. Saccharomyces is well known for:

 
 
 
 

504. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

506. In angiosperms double fertilization represents:

 
 
 
 

507. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. NBG of Lucknow is now named as:

 
 
 
 

511. Yeast is a source of:

 
 
 
 

512. The teeth of peristome of Funaria are :

 
 
 
 

513. Cyanophage is a virus that attacks:

 
 
 
 

514. Which one of the following is a monocot?

 
 
 
 

515. Botulism is a:

 
 
 
 

516. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. Quarantine regulations are concerned with:

 
 
 
 

524. Which is an edible fungus?

 
 
 
 

525. The ascus of yeast contains:

 
 
 
 

526. Cycas is :

 
 
 
 

527. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

529. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

533. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

535. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

539. Which bacteria convert nitrate into nitrogen?

 
 
 
 

540. Broad spectrum antibiotic is, which:

 
 
 
 

541. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

548. Early blight of potato is caused by:

 
 
 
 

549. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

553. Heterotrichous habit means :

 
 
 
 

554. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

556. Rhizophore of Selaginella is:

 
 
 
 

557. Which of the following are included in Tracheophyta?

 
 
 
 

558. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

560. Late blight of potato is caused by :

 
 
 
 

561. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

563. Photosynthetic bacteria have:

 
 
 
 

564. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

573. Aflatoxin is produced as a product in :

 
 
 
 

574. Most primitive kind of flower is represented by:

 
 
 
 

575. Iodine is obtained from :

 
 
 
 

576. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

578. The sori in Dryopteris are found on:

 
 
 
 

579. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

580. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585.

586. In Gymnosperms endosperm is a:

 
 
 
 

587. In Funaria, calyptra is derived from :

 
 
 
 

588. Bacteria which are spherical are called:

 
 
 
 

589. Centric discoid form of diatom is:

 
 
 
 

590. Who discovered heterothallism in fungi?

 
 
 
 

591. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Rice, pea, potato are :

 
 
 
 

595. Clostridium can:

 
 
 
 

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

 
 
 
 

597. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

600. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

602. Nitrifying bacteria play an important role by converting:

 
 
 
 

603. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

605. . Tapetum develops in:

 
 
 
 

606. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Bacteria are found everywhere, except:

 
 
 
 

610. Some bacteria cannot be killed easily because of:

 
 
 
 

611. Which organisms are the oldest life forms?

 
 
 
 

612. Ginkgo biloba is a:

 
 
 
 

613. In moss, stomata are found:

 
 
 
 

614. Iodine is obtained from:

 
 
 
 

615. Detailed study of bacteriophage was made by:

 
 
 
 

616. Mycoplasma are:

 
 
 
 

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

 
 
 
 

618. Spermatophyta are characterized by producing:

 
 
 
 

619. Pasteurized milk is:

 
 
 
 

620. Total parasites belong to:

 
 
 
 

621. Viruses are considered to be:

 
 
 
 

622. Virus and bacteriophage are made-up of:

 
 
 
 

623. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

628. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

630. Streptomycin is obtained from:

 
 
 
 

631. Male gametophyte of Selaginella is found:

 
 
 
 

632. The coralloid roots are :

 
 
 
 

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

 
 
 
 

634. 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?

 
 
 
 

635. How is moss different from fern?

 
 
 
 

636. Fruiting body of lichens is :

 
 
 
 

637. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

639. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

641. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

643. The leaf of Cycas shows:

 
 
 
 

644. Cell walls of Gram-positive bacteria contain:

 
 
 
 

645. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. The development of sporangium in Selaginella is:

 
 
 
 

649. 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?

 
 
 
 

650. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

652. Why is Cycas called a living fossil?

 
 
 
 

653. Pinus gerardiana is :

 
 
 
 

654. In moss, sporophyte is formed on:

 
 
 
 

655. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

657. Select the wrong statement:

 
 
 
 

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

 
 
 
 

659. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

661. A gill of Agaricus:

 
 
 
 

662. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

664. Desired type of Cycas can be grown by:

 
 
 
 

665. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

672. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Who discovered streptomycin?

 
 
 
 

677. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

679. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. Which is the correct statement about Selaginella?

 
 
 
 

683. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

685. Where does meiosis occur in yeast?

 
 
 
 

686. Which is a gametophytic tissue?

 
 
 
 

687. Select the wrong statement:

 
 
 
 

688. In Pteris, the roots are:

 
 
 
 

689. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Helotism word is used for the symbiosis between :

 
 
 
 

693. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

695. Saccharomyces ludwigii ascus produces:

 
 
 
 

696. Water bloom is generally caused by :

 
 
 
 

697. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. Which of the following is a heterosporous pteridophyte?

 
 
 
 

702. Facultative parasite is:

 
 
 
 

703. Spermatophyta are characterized by producing:

 
 
 
 

704. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. The archegonia in Selaginella develop on:

 
 
 
 

708. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

710. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

712. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. To which country Antony van Leeuwenhoek belong?

 
 
 
 

716. Cryptogams include :

 
 
 
 

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

 
 
 
 

718. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. The fern plant is:

 
 
 
 

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

 
 
 
 

724. The largest alga is:

 
 
 
 

725. The lambda phase is a:

 
 
 
 

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

 
 
 
 

727. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Liverworts are included in :

 
 
 
 

731. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

732. Cycas is:

 
 
 
 

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

 
 
 
 

734. Plasmids are:

 
 
 
 

735. Fairy ring is the name given to:

 
 
 
 

736. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. In a bacteriophage, DNA is present in:

 
 
 
 

740. 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:

 
 
 
 

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

 
 
 
 

742. Seeds are characteristically found in:

 
 
 
 

743. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

747. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

748. Who discovered cyanophages?

 
 
 
 

749. Lichens form the first community in

 
 
 
 

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

 
 
 
 

751. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

754. Yeast grows more rapidly in:

 
 
 
 

755. The roots of Cycas are :

 
 
 
 

756. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

761. Bacteriophages have been used as:

 
 
 
 

762. Bacteria were first discovered by:

 
 
 
 

763. Ovary is absent in:

 
 
 
 

764. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

765. Which of the following applies to Selaginella?

 
 
 
 

766. In Pteris, the archegonia are present:

 
 
 
 

767. Winged seeds are found in :

 
 
 
 

768. Linnaeus is credited with introducing:

 
 
 
 

769. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

771. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

772. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. The zygospore in Rhizopus on germination forms:

 
 
 
 

776. Most of the algae are :

 
 
 
 

777. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

779. Bacteria are placed under:

 
 
 
 

780. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. Ectocarpus produces:

 
 
 
 

784. The seedless plants which possess vascular tissues are:

 
 
 
 

785. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. Fern plants are:

 
 
 
 

791. Fruits are not found in Cycas because:

 
 
 
 

792. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

797. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. The zoospores of Ulothrix are :

 
 
 
 

801. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

803. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

805. Pinus microsporophyll bears:

 
 
 
 

806. In Cycas microsporangia are borne on:

 
 
 
 

807. 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?

 
 
 
 

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

 
 
 
 

809. Which of the following statements is not correct?

 
 
 
 

810. The prothallus of fern is:

 
 
 
 

811. Antibiotics cure the disease by:

 
 
 
 

812. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

814. In moss, conducting tissue is made up of

 
 
 
 

815. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

817. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. Among the algae kelps are :

 
 
 
 

821. Bacteriophage consists of:

 
 
 
 

822. E coli is a:

 
 
 
 

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

 
 
 
 

824. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

826. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

829. Which of the following have algal zone?

 
 
 
 

830. Placenta in fern is:

 
 
 
 

831. Viroids have:

 
 
 
 

832. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

834. Who among the following discovered virus?

 
 
 
 

835. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

837. Discovery of penicillin was based on:

 
 
 
 

838. Metulae are found in:

 
 
 
 

839. Genetic material of TMV is:

 
 
 
 

840. Vascular tissue is found in :

 
 
 
 

841. Reserve food in Euglena is:

 
 
 
 

842. Black rust of wheat is caused by:

 
 
 
 

843. The fungi that grow on wood are called:

 
 
 
 

844. Red rot of sugarcane is caused by:

 
 
 
 

845. Transfusion tissue is present in the leaflet of:

 
 
 
 

846. Nannandria are:

 
 
 
 

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

 
 
 
 

848. Azolla and Salvinia both are:

 
 
 
 

849. 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?

 
 
 
 

850. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Which have the largest antherozoid?

 
 
 
 

855. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

857. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Pollination in Pinus is :

 
 
 
 

864. 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: