Quiz_Random

1. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. Simple polyembryony is found in :

 
 
 
 

6. Which causes red tide?

 
 
 
 

7. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Majority of lichens are :

 
 
 
 

12. Vegetative reproduction in Cycas is by means of :

 
 
 
 

13. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

16. Heterocysts are found in :

 
 
 
 

17. Black rust of wheat is caused by:

 
 
 
 

18. Aflatoxin is produced as a product in :

 
 
 
 

19. Select the wrong statement:

 
 
 
 

20. The role of meiosis is for:

 
 
 
 

21. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. Genetic material of TMV is:

 
 
 
 

25. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

30. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. 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:

 
 
 
 

35. Typhoid in man is caused by:

 
 
 
 

36. Ethylene oxide is widely used to:

 
 
 
 

37. Water-net is the name of:

 
 
 
 

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

 
 
 
 

39. Total parasites belong to:

 
 
 
 

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

 
 
 
 

41. In Herpes virus DNA is:

 
 
 
 

42. 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:

 
 
 
 

43. Where does meiosis occur in yeast?

 
 
 
 

44. Roots are absent in :

 
 
 
 

45. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

54. Mycoplasma is different from bacteria due to:

 
 
 
 

55. The gametophyte produced by apospory is :

 
 
 
 

56. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

63. In moss, peristomial teeth are:

 
 
 
 

64. Banana bunchy top is caused by :

 
 
 
 

65. Cycas plant in appearance resembles :

 
 
 
 

66. Bentham and Hooker placed gymnosperms:

 
 
 
 

67. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. NBG of Lucknow is now named as:

 
 
 
 

72. Fruits are not found in :

 
 
 
 

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

 
 
 
 

74. Cellular slime mold is:

 
 
 
 

75. Which is a redwood tree?

 
 
 
 

76. Winged pollen grains are found in :

 
 
 
 

77. Vascular cryptogams is the term used for:

 
 
 
 

78. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. 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:

 
 
 
 

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

 
 
 
 

83.

84. The most important property of yeast is:

 
 
 
 

85. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Embryophyta includes :

 
 
 
 

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

 
 
 
 

90. Most primitive kind of flower is represented by:

 
 
 
 

91. An alga which is rich in proteins:

 
 
 
 

92. Virus and bacteriophage are made-up of:

 
 
 
 

93. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

94. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

96. Select the wrong statement:

 
 
 
 

97. The megaspore of Selaginella on germination produces:

 
 
 
 

98. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Which have the largest antherozoid?

 
 
 
 

103. Rhizopus belongs to:

 
 
 
 

104. In Cycas the fertilization is:

 
 
 
 

105. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

107. Ovary is absent in :

 
 
 
 

108. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

109. In angiosperms double fertilization represents:

 
 
 
 

110. Cyanophage is a virus that attacks:

 
 
 
 

111. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

113. Mostly type of zygospore in Ulothrix is:

 
 
 
 

114. Lichens reproduce by :

 
 
 
 

115. Tautonyms are illegitimate in:

 
 
 
 

116. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

118. Penicillin was discovered by:

 
 
 
 

119. Pasteurized milk is:

 
 
 
 

120. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

122. Triple antigen injection or vaccine are for:

 
 
 
 

123. Which group of algae have an incipient nucleus?

 
 
 
 

124. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

135. What is streptomycin?

 
 
 
 

136. Ovules are not found enclosed in ovary of:

 
 
 
 

137. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

142. 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:

 
 
 
 

143. Bacteria are found everywhere, except:

 
 
 
 

144. In a bacteriophage, DNA is present in:

 
 
 
 

145. The chloroplast in Ulothrix is :

 
 
 
 

146. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. In moss, reduction division occurs in :

 
 
 
 

157. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

161. Fruiting body of lichens is :

 
 
 
 

162. Liverworts are included in :

 
 
 
 

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

 
 
 
 

164. Generic name of mango is:

 
 
 
 

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

 
 
 
 

166. Sometimes the bacterial cell is enclosed in:

 
 
 
 

167. Broad spectrum antibiotic is, which:

 
 
 
 

168. Bacteria which are spherical are called:

 
 
 
 

169. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. The Rhizopus is:

 
 
 
 

174.

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

 
 
 
 

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

 
 
 
 

177. The first to isolate a plant virus was:

 
 
 
 

178. Meiosis in Ulothrix takes place:

 
 
 
 

179. Anoxygenic photosynthesis occurs in:

 
 
 
 

180. Among the algae kelps are :

 
 
 
 

181. Wine turns sour because of:

 
 
 
 

182. Halophiles are the bacteria that require for growth:

 
 
 
 

183. In moss, calyptra is formed from:

 
 
 
 

184. The teeth of peristome of Funaria are :

 
 
 
 

185. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

189. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Etiology includes the study of :

 
 
 
 

194. Fertility of the soil is increased by:

 
 
 
 

195. The zygospore in Rhizopus on germination forms:

 
 
 
 

196. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. The leaves of Funaria are :

 
 
 
 

200. Funaria is a Bryophyta because :

 
 
 
 

201. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. Select the correct statement: (NEET 2016)

 
 
 
 

207. Ulothrix produces :

 
 
 
 

208. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

210. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

212. What is special feature of fern archegonia?

 
 
 
 

213. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. The sporangium of fern contains nearly:

 
 
 
 

217. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

219. The orders generally have the uniform endings:

 
 
 
 

220. In Gymnocarpeae the fruiting body is :

 
 
 
 

221. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

222. Iodine is obtained from :

 
 
 
 

223. 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:

 
 
 
 

224. Most appropriate word for protozoans is:

 
 
 
 

225. Fairy ring is the name given to:

 
 
 
 

226. Yeast grows more rapidly in:

 
 
 
 

227. Who discovered cyanophages?

 
 
 
 

228. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

230. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

232. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

237. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

240. Which of the following are included in Tracheophyta?

 
 
 
 

241. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. The chief characteristic of class Ascomycetes is:

 
 
 
 

248. Germination of the seed of Pinus is :

 
 
 
 

249. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

255. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. Protistan algae obtain their food as:

 
 
 
 

259. Which statement is wrong in regard to bacteria?

 
 
 
 

260. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. All archaebacteria lack:

 
 
 
 

264. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

266. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

268. The sporangiophores in Rhizopus are:

 
 
 
 

269. Azolla growing in paddy fields helps in:

 
 
 
 

270. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

272. The gametophyte of fern bears:

 
 
 
 

273. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. Cycas is different from mango in :

 
 
 
 

277. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

279. Yeast is a source of:

 
 
 
 

280. Which of the following statements is not correct?

 
 
 
 

281. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. The microsporophylls on the cone of Cycas are :

 
 
 
 

285. Sexual reproduction of lichen is due to :

 
 
 
 

286. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. 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?

 
 
 
 

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

 
 
 
 

292. Gametophyte is the main plant body in :

 
 
 
 

293. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. Lichens reproduce by :

 
 
 
 

297. Which of the following have algal zone?

 
 
 
 

298. Little leaf disease of Brinjal is caused by:

 
 
 
 

299. Rhizopus and yeast are usually:

 
 
 
 

300. Pteridophytes are also known as :

 
 
 
 

301. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

303. Which of the following are absent in Mycoplasma?

 
 
 
 

304. Mycoplasma was discovered by:

 
 
 
 

305. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

307. Psilotum is:

 
 
 
 

308. Which one of the following is a monocot?

 
 
 
 

309. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. What are Cyanobacteria?

 
 
 
 

313. Rhizoids of Riccia are :

 
 
 
 

314. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Most primitive embryophytes are placed in :

 
 
 
 

318. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

320. Most resistant spore in bacteria is:

 
 
 
 

321. Common phycobiont in a lichen is :

 
 
 
 

322. The antibiotic is obtained from:

 
 
 
 

323. Pollination in Pinus is :

 
 
 
 

324. Vascular tissue is found in :

 
 
 
 

325. Which is a fungicide?

 
 
 
 

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

 
 
 
 

327. Which organisms are the oldest life forms?

 
 
 
 

328. Citrus canker is caused by :

 
 
 
 

329. Cell walls of Gram-positive bacteria contain:

 
 
 
 

330. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

332. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

334. Botulism is a:

 
 
 
 

335. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

337. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

340. Antibiotic has been extracted from :

 
 
 
 

341. Parmelia belongs to :

 
 
 
 

342. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Some diseases caused by bacteria are:

 
 
 
 

346. Bacteria growing on synthetic medium are called:

 
 
 
 

347. The mode of nutrition of bacteria is usually:

 
 
 
 

348. Which fixes atmospheric nitrogen?

 
 
 
 

349. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

350. Yeast belongs to class:

 
 
 
 

351. Virion refers to:

 
 
 
 

352. Cap cells are found in the filament of:

 
 
 
 

353. Pasteur is famous for his:

 
 
 
 

354. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

356. Viruses are commonly transmitted in plants through:

 
 
 
 

357. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

363. The chloroplast of Chlamydomonas are:

 
 
 
 

364. Rhizophore of Selaginella is:

 
 
 
 

365. In Gymnosperms endosperm is a:

 
 
 
 

366. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

368. Choose the correct statement about Spirogyra:

 
 
 
 

369. Discovery of penicillin was based on:

 
 
 
 

370. Spermatophyta are characterized by producing:

 
 
 
 

371. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

376. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Which lichen is called Reindeer moss?

 
 
 
 

380. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. Cycas is similar to a mustard plant :

 
 
 
 

386. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

387. 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?

 
 
 
 

388. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

390. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Saccharomyces ludwigii ascus produces:

 
 
 
 

394. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

396. Viruses are considered to be:

 
 
 
 

397. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. To which country Antony van Leeuwenhoek belong?

 
 
 
 

403. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

405. The development of sporangium in Selaginella is:

 
 
 
 

406. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

410. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

412. Red rot of sugarcane is caused by:

 
 
 
 

413. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

414. Spermatophyta are characterized by producing:

 
 
 
 

415. The central part of Funaria axis is :

 
 
 
 

416. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

419. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

421. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Coenogamete is found in:

 
 
 
 

430. . Tapetum develops in:

 
 
 
 

431. Gymnosperms could also be called as:

 
 
 
 

432. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

433. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

435. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

437. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Club moss is the common name of :

 
 
 
 

441. The DNA of E coli is:

 
 
 
 

442. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

445. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

447. The prothallus of fern represents the plant:

 
 
 
 

448. The sexual reproductive organs in Rhizopus are:

 
 
 
 

449. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Endemic plants are characterised by their:

 
 
 
 

453. In moss, conducting tissue is made up of

 
 
 
 

454. Spirogyra differs from moss protonema in having :

 
 
 
 

455. The sori in Dryopteris are found on:

 
 
 
 

456. The archegonia in Selaginella develop on:

 
 
 
 

457. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

459. Acellular slime mold is/are:

 
 
 
 

460. The upper region of moss capsule is :

 
 
 
 

461. Mycoplasma are sensitive to:

 
 
 
 

462. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

464. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

466. Some biologists have used the term Mycetozoa for:

 
 
 
 

467. The coralloid roots are :

 
 
 
 

468. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

470. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

471. Photosynthetic protists belong to:

 
 
 
 

472. Most common type of conjugation in Spirogyra is :

 
 
 
 

473. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

474. First animal pathogenic virus was discovered by:

 
 
 
 

475. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. Which of the following have a prokaryotic cell?

 
 
 
 

483. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

485. Bryophyta have been placed in cryptogams because:

 
 
 
 

486. The source of litmus is :

 
 
 
 

487. Fern prothallus is:

 
 
 
 

488. Bacteriophages have been used as:

 
 
 
 

489. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

491. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

493. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

498. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

501. Chief constituents of bordeaux mixture are :

 
 
 
 

502. What is absent in Deuteromycetes?

 
 
 
 

503. LSD is:

 
 
 
 

504. Why is Cycas called a living fossil?

 
 
 
 

505. Late blight of potato is caused by :

 
 
 
 

506. Enteric bacteria are those bacteria that live:

 
 
 
 

507. The Rhizopus gametes are formed in:

 
 
 
 

508. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

510. Vascular cryptogam is the term used for :

 
 
 
 

511. Seeds are characteristically found in:

 
 
 
 

512. What are plasmids?

 
 
 
 

513. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

515. Which of the following are included in Tracheophyta?

 
 
 
 

516. Which part of Riccia bears nurse cells?

 
 
 
 

517. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Gram stain is used to:

 
 
 
 

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

 
 
 
 

524. Quarantine regulations are concerned with:

 
 
 
 

525. Lichens form the first community in

 
 
 
 

526. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

528. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

529. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. Viruses have:

 
 
 
 

534. Lichen show :

 
 
 
 

535. Which is an edible fungus?

 
 
 
 

536. Desired type of Cycas can be grown by:

 
 
 
 

537. Which is an exception to cell theory?

 
 
 
 

538. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

540. Fruits are not found in Cycas because:

 
 
 
 

541. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

543. The tree fern is:

 
 
 
 

544. Which of the following lichens is harmful?

 
 
 
 

545. Facultative saprophyte is:

 
 
 
 

546. The lambda phase is a:

 
 
 
 

547. The rhizoids of Funaria are :

 
 
 
 

548. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

553. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

555. Heterosporous pteridophytes always form:

 
 
 
 

556. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. Bryophyta have a special character from other plants:

 
 
 
 

565. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

567. Metulae are found in:

 
 
 
 

568. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

570. Maximum diversity of life forms occurs in :

 
 
 
 

571. Amoeba is a member of the phylum:

 
 
 
 

572. Germ theory of disease was proposed by:

 
 
 
 

573. All protozoans possess:

 
 
 
 

574. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

576. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

578. Bacteria were first discovered by:

 
 
 
 

579. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

581. Cyathia is characterized by:

 
 
 
 

582. Special feature of pollen grains of Pinus is :

 
 
 
 

583.

 

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

 
 
 
 

585. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

587. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. Kuru, a human disease is caused by:

 
 
 
 

591. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

593. Pneumonia is caused by:

 
 
 
 

594. Enzymes are absent in:

 
 
 
 

595. Most primitive group of vascular plants are:

 
 
 
 

596. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

598. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

600. The alga, Spirogyra are found in :

 
 
 
 

601. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

603. Which of the following is true for viruses?

 
 
 
 

604. Plasmids are:

 
 
 
 

605. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

612. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

615. Woody climbers are known as :

 
 
 
 

616. The chromosomal number in:

 
 
 
 

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

 
 
 
 

618. All algae have:

 
 
 
 

619. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. In moss, sporogenous tissue arises from:

 
 
 
 

623. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. Reproduction in Rhizopus is:

 
 
 
 

633. True sexuality is not found in:

 
 
 
 

634. Zoogametes are not found in:

 
 
 
 

635. Mycoplasma are:

 
 
 
 

636. Green plants are classified as :

 
 
 
 

637. Ovary is absent in:

 
 
 
 

638. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

640. Cycas is :

 
 
 
 

641. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

643. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

645. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

650. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

652. Lichens are pioneers of vegetation in a :

 
 
 
 

653. Facultative parasite is:

 
 
 
 

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

 
 
 
 

655. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

657. Smut of maize is caused by :

 
 
 
 

658. Streptomycin is obtained from:

 
 
 
 

659. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

661. Which is the correct statement about Selaginella?

 
 
 
 

662. Funaria is :

 
 
 
 

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

 
 
 
 

664. Placenta in fern is:

 
 
 
 

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

 
 
 
 

666. Nitrogen-fixing bacteria may be located:

 
 
 
 

667. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

669. In Funaria :

 
 
 
 

670. The seedless plants which possess vascular tissues are:

 
 
 
 

671. How is moss different from fern?

 
 
 
 

672. Reproduction in Cycas takes place by :

 
 
 
 

673. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

675. Bacteria are placed under:

 
 
 
 

676. The fungi used as food are:

 
 
 
 

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

 
 
 
 

678. The smallest bacterium is:

 
 
 
 

679.

680. The similarity between cyanobacteria and bacteria:

 
 
 
 

681. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

683. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

685. Asexual reproductive body of Volvox is called:

 
 
 
 

686. Most primitive embryophytes are placed in:

 
 
 
 

687. Fern plants are:

 
 
 
 

688. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Interferon is a:

 
 
 
 

693. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

695. Lichens are indicators of :

 
 
 
 

696. In Cycas microsporangia are borne on:

 
 
 
 

697. In Cycas:

 
 
 
 

698. Lichens are the indicator of pollution :

 
 
 
 

699. Longest known virus is:

 
 
 
 

700. Mucilaginous canals in Cycas are found in :

 
 
 
 

701. Which bacteria convert nitrate into nitrogen?

 
 
 
 

702. Downy mildew disease is caused by :

 
 
 
 

703. One of the distinctive feature of Spirogyra is :

 
 
 
 

704. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

706. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

711. Pinus is:

 
 
 
 

712. Most of the lichens are composed of :

 
 
 
 

713. Absorptive nutrition is:

 
 
 
 

714. The male gametes of Pinus are :

 
 
 
 

715. Nannandria are:

 
 
 
 

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

 
 
 
 

717. The gametophyte of fern is as:

 
 
 
 

718. Who discovered heterothallism in fungi?

 
 
 
 

719. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

725. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

730. Embryo formation is not known in :

 
 
 
 

731. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

733. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

739. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. The photosynthetic protists are:

 
 
 
 

746. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

751. Club moss and Peat moss belong to:

 
 
 
 

752. The term stele was given by:

 
 
 
 

753. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. The spur of Pinus roxburghii has :

 
 
 
 

757. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

759. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. In tracheophyta:

 
 
 
 

763. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. The root nodules of leguminous plants contain:

 
 
 
 

767. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

774. John Hutchinson divided dicots into two divisions:

 
 
 
 

775. The plants of Funaria grow :

 
 
 
 

776. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

777. Red rot of sugarcane is caused by :

 
 
 
 

778. The genetic material of poxvirus is:

 
 
 
 

779. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

782. 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?

 
 
 
 

783. In Pteris, the roots are:

 
 
 
 

784. Linnaeus is credited with introducing:

 
 
 
 

785. Who among the following discovered virus?

 
 
 
 

786. Which is not found in bacteria?

 
 
 
 

787. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

789. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

791. Sporophyte of fern is:

 
 
 
 

792. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

794. Viroids have:

 
 
 
 

795. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

797. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

799. Detailed study of bacteriophage was made by:

 
 
 
 

800. Embryophyta includes:

 
 
 
 

801. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

802. The leaf of Cycas shows:

 
 
 
 

803. Small epidermal swellings due to infection are called :

 
 
 
 

804. Cycas is:

 
 
 
 

805. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

808. Cleavage polyembryony is found in :

 
 
 
 

809. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

813. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

815. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

817. In Selaginella, the microsporangia are:

 
 
 
 

818. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. Seeds are characteristically found in :

 
 
 
 

824. Mycoplasma contains:

 
 
 
 

825. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

827. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Early blight of potato is caused by:

 
 
 
 

833. Which class of Protozoa includes all parasitic forms?

 
 
 
 

834. Climbers are found in genus:

 
 
 
 

835. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. White rust of crucifers is caused by:

 
 
 
 

843. The truncated cone of HIV consists of:

 
 
 
 

844. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

847. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

848. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

852. Multicellular and jacketed sex organs are found in :

 
 
 
 

853. Agar-agar is obtained from:

 
 
 
 

854. Economic importance of bacteria lies in their being:

 
 
 
 

855. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

857. The flagella of Chlamydomonas are:

 
 
 
 

858. Spores of which plants have chloroplast:

 
 
 
 

859. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

864. Nitrifying bacteria play an important role by converting: