Quiz_Random

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

 
 
 
 

2. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. Pinus is:

 
 
 
 

6. The Rhizopus is:

 
 
 
 

7. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

9. Which of the following are absent in Mycoplasma?

 
 
 
 

10. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

14. The fungi that grow on wood are called:

 
 
 
 

15. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Pollination in Pinus is :

 
 
 
 

20. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. The leaves of Funaria are :

 
 
 
 

25. Spermatophyta are characterized by producing:

 
 
 
 

26. Proembryo in Pinus is :

 
 
 
 

27. The prothallus of fern is:

 
 
 
 

28. The disease apple scab is caused by:

 
 
 
 

29. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

31. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

35. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Virus and bacteriophage are made-up of:

 
 
 
 

39. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Mucilaginous canals in Cycas are found in :

 
 
 
 

43. In Cycas which structure is equivalent to stamen?

 
 
 
 

44. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Red rot of sugarcane is caused by :

 
 
 
 

48. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

50. Cleavage polyembryony is found in :

 
 
 
 

51. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

53. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

55. Zoogametes are not found in:

 
 
 
 

56. Most of the algae are :

 
 
 
 

57. Lichens reproduce by :

 
 
 
 

58. To which country Antony van Leeuwenhoek belong?

 
 
 
 

59. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. The coralloid roots are :

 
 
 
 

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

 
 
 
 

69. 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?

 
 
 
 

70. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

71. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

73. In moss, conducting tissue is made up of

 
 
 
 

74. Smallpox is caused by:

 
 
 
 

75. Rhizopus and yeast are usually:

 
 
 
 

76. Fairy ring is the name given to:

 
 
 
 

77. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

79. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Kuru, a human disease is caused by:

 
 
 
 

83. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

88. Cycas is:

 
 
 
 

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

 
 
 
 

90. In dinoflagellates, the two flagella are:

 
 
 
 

91. What is special feature of fern archegonia?

 
 
 
 

92. Select the correct statement: (NEET 2016)

 
 
 
 

93. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

95. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

97. Which class of Protozoa includes all parasitic forms?

 
 
 
 

98. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Interferon is a:

 
 
 
 

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

 
 
 
 

103. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

108. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

110. Which of the following applies to Selaginella?

 
 
 
 

111. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

113. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

114. Viroids have:

 
 
 
 

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

 
 
 
 

116. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

118. Lichens are the indicator of pollution :

 
 
 
 

119. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

121. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

126. In Herpes virus DNA is:

 
 
 
 

127. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

129. Vascular cryptogams is the term used for:

 
 
 
 

130. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

132. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

134. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

136. Saccharomyces ludwigii ascus produces:

 
 
 
 

137. Water-borne bacterial diseases are:

 
 
 
 

138. Lichen show :

 
 
 
 

139. Yeast is a source of:

 
 
 
 

140. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

142. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

144. The development of sporangium in Selaginella is:

 
 
 
 

145. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

146. In Funaria :

 
 
 
 

147. Sometimes the bacterial cell is enclosed in:

 
 
 
 

148. 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:

 
 
 
 

149. How is moss different from fern?

 
 
 
 

150. Viruses are considered to be:

 
 
 
 

151. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Heterospory and ligulate leaves are a feature of:

 
 
 
 

155. Anoxygenic photosynthesis occurs in:

 
 
 
 

156. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

158. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

161. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

163. Photosynthetic protists belong to:

 
 
 
 

164. Club moss and Peat moss belong to:

 
 
 
 

165. Green plants are classified as :

 
 
 
 

166. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Maximum diversity of life forms occurs in :

 
 
 
 

181. Early blight of potato is caused by:

 
 
 
 

182. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

183. What is absent in Deuteromycetes?

 
 
 
 

184. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

186. Which is the nuclear material in bacteria?

 
 
 
 

187. Sporophyte of Funaria is :

 
 
 
 

188. Sporophyte of fern is:

 
 
 
 

189. Bryophyta have been placed in cryptogams because:

 
 
 
 

190. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Select the wrong statement:

 
 
 
 

195. Funaria are commonly found :

 
 
 
 

196. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. The upper region of moss capsule is :

 
 
 
 

202. In moss, calyptra is formed from:

 
 
 
 

203. Aflatoxin is produced as a product in :

 
 
 
 

204. Red rot of sugarcane is caused by:

 
 
 
 

205. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

207. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

209. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

211. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

213. Male gametes in Dryopteris are:

 
 
 
 

214. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

215. Pollination drop is:

 
 
 
 

216. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

218. Which of the following shows heterotrichous habit?

 
 
 
 

219. Bacteriophage consists of:

 
 
 
 

220. Lichens show :

 
 
 
 

221. Infective part of virus was discovered by:

 
 
 
 

222. Which of the following is true for viruses?

 
 
 
 

223. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. Cycas revoluta is widely grown as :

 
 
 
 

228. Black rust of wheat is caused by:

 
 
 
 

229. Fertility of the soil is increased by:

 
 
 
 

230. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

235. Among the algae kelps are :

 
 
 
 

236. Plasmids are:

 
 
 
 

237. Quarantine regulations are concerned with:

 
 
 
 

238. The roots of Cycas are :

 
 
 
 

239. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

241. Multicellular and jacketed sex organs are found in :

 
 
 
 

242. Which one of the following is a monocot?

 
 
 
 

243. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

245. Which of the following have algal zone?

 
 
 
 

246. Mycoplasma is different from bacteria due to:

 
 
 
 

247. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

248. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. The sporophyte of Riccia is represented by :

 
 
 
 

257. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

259. Sexual reproduction of lichen is due to :

 
 
 
 

260. In moss, reduction division occurs in :

 
 
 
 

261. Lichens are indicators of :

 
 
 
 

262. Smut of maize is caused by :

 
 
 
 

263. Oswald Tippo’s classification is:

 
 
 
 

264. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

265. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

267. The teeth of peristome of Funaria are :

 
 
 
 

268. Vascular tissue is found in :

 
 
 
 

269. In moss, sporophyte is formed on:

 
 
 
 

270. The fungi are usually:

 
 
 
 

271. Bacteria are considered to be plants because they:

 
 
 
 

272. Vegetative reproduction in Cycas is by means of :

 
 
 
 

273. Iodine is obtained from :

 
 
 
 

274. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

276. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Pneumonia is caused by:

 
 
 
 

281. Indusium in Dryopteris is:

 
 
 
 

282. Reserve food in Euglena is:

 
 
 
 

283. Antibiotics cure the disease by:

 
 
 
 

284. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

286. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Facultative parasite is:

 
 
 
 

292. Sleeping sickness disease in man is caused by:

 
 
 
 

293. In a bacteriophage, DNA is present in:

 
 
 
 

294. Which one of the following statement is wrong?

 
 
 
 

295. Acetobacter is useful in:

 
 
 
 

296. Pseudomycelium is found in:

 
 
 
 

297. The nucleus of bacteria is:

 
 
 
 

298. Which of the following is true for Selaginella?

 
 
 
 

299. The spur of Pinus roxburghii has :

 
 
 
 

300. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

302. 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:

 
 
 
 

303. Which of the following is a heterosporous pteridophyte?

 
 
 
 

304. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

307. Cyanophage is a virus that attacks:

 
 
 
 

308. The stele of Dryopteris is a:

 
 
 
 

309. Streptomycin is obtained from:

 
 
 
 

310. 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:

 
 
 
 

311. The chromosomal number in:

 
 
 
 

312. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

314. Isomorphic type alternation of generation is found in:

 
 
 
 

315. The two conjugating gametangia of Rhizopus are:

 
 
 
 

316. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

324. The lambda phase is a:

 
 
 
 

325. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

327. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

329. Why is Cycas called a living fossil?

 
 
 
 

330. Citrus canker is caused by :

 
 
 
 

331. Ovary is absent in:

 
 
 
 

332. Azolla growing in paddy fields helps in:

 
 
 
 

333. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

335. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

337. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

339. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. Which causes red tide?

 
 
 
 

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

 
 
 
 

346. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

348. Chemosynthetic bacteria are:

 
 
 
 

349. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

351. Ovules are not found enclosed in ovary in :

 
 
 
 

352. Botulism is a:

 
 
 
 

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

 
 
 
 

354. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

358. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

360. Cocci types of bacteria are:

 
 
 
 

361. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

363. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. Typhoid in man is caused by:

 
 
 
 

369. Which is a gametophytic tissue?

 
 
 
 

370. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

372. Number of capsomeres forming capsid of TMV is:

 
 
 
 

373.

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

 
 
 
 

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

 
 
 
 

376. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

381. Selaginella differs from Moss in having:

 
 
 
 

382. 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?

 
 
 
 

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

 
 
 
 

384. Which part of Riccia bears nurse cells?

 
 
 
 

385. Amoeba is a member of the phylum:

 
 
 
 

386. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390.

391. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Germ theory of disease was proposed by:

 
 
 
 

395. Pasteurization of milk involves heating for:

 
 
 
 

396. Etiology includes the study of :

 
 
 
 

397. Spirogyra differs from moss protonema in having :

 
 
 
 

398. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

400. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

402. Penicillin is obtained from:

 
 
 
 

403. Spermatophyta are characterized by producing:

 
 
 
 

404. Club moss is the common name of :

 
 
 
 

405. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

407. Streptomyces falls under:

 
 
 
 

408. Special feature of pollen grains of Pinus is :

 
 
 
 

409. Meristele of fern is:

 
 
 
 

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

 
 
 
 

411. Black rust of wheat is caused by:

 
 
 
 

412. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

415. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

417. The vascular bundles of Cycas stem are :

 
 
 
 

418. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

420. Viruses are commonly transmitted in plants through:

 
 
 
 

421. Which is an exception to cell theory?

 
 
 
 

422. Which have the largest antherozoid?

 
 
 
 

423. Cycas is :

 
 
 
 

424. Winged seeds are found in :

 
 
 
 

425. The plants of Funaria grow :

 
 
 
 

426. Lichens reproduce by :

 
 
 
 

427. Red rot of sugarcane is caused by :

 
 
 
 

428. Common phycobiont in a lichen is :

 
 
 
 

429. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Total parasites belong to:

 
 
 
 

433. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. Pythium debaryanum is the causative agent of:

 
 
 
 

437. Heterocysts are found in :

 
 
 
 

438. In Gymnosperms endosperm is a:

 
 
 
 

439. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

441. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

445. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

448. The fern plant is:

 
 
 
 

449. Psilotum is:

 
 
 
 

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

 
 
 
 

451. Fern prothallus is:

 
 
 
 

452. Methanogens belong to:

 
 
 
 

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

 
 
 
 

454. Which organisms are the oldest life forms?

 
 
 
 

455. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. An Hfr bacterium is one that contains:

 
 
 
 

459. All protozoans possess:

 
 
 
 

460. The archegonia of Selaginella are differentiated by:

 
 
 
 

461. Milk is converted to curd by:

 
 
 
 

462. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

463. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

465. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

467. Some biologists have used the term Mycetozoa for:

 
 
 
 

468. Ectocarpus produces:

 
 
 
 

469. Iodine is obtained from:

 
 
 
 

470. Green plants are classified as:

 
 
 
 

471. Soil fertility is lost by the activities of:

 
 
 
 

472. Pollination in Cycas takes place by :

 
 
 
 

473. The zygospore in Rhizopus on germination forms:

 
 
 
 

474. The antherozoids of Funaria are :

 
 
 
 

475. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

477. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

479. Agar-agar is obtained from:

 
 
 
 

480. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

482. Azolla and Salvinia both are:

 
 
 
 

483. Mycoplasma are:

 
 
 
 

484. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

486. Ergot of rye is caused by:

 
 
 
 

487. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. The disease symptom necrosis refers to :

 
 
 
 

497. One of the distinctive feature of Spirogyra is :

 
 
 
 

498. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

500. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

503. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

505. Vascular cryptogam is the term used for :

 
 
 
 

506. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. Fern prothallus produces:

 
 
 
 

510. The sori in Dryopteris are found on:

 
 
 
 

511. Who discovered streptomycin?

 
 
 
 

512. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

514. The similarity between cyanobacteria and bacteria:

 
 
 
 

515. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

518. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

524. Most common type of conjugation in Spirogyra is :

 
 
 
 

525. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

537. Protozoans are considered animals because these are:

 
 
 
 

538. Spirogyra represents the :

 
 
 
 

539. Rhizopus belongs to:

 
 
 
 

540. E coli is a:

 
 
 
 

541. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

543. Viruses have:

 
 
 
 

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

 
 
 
 

545. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

547. Banana bunchy top is caused by :

 
 
 
 

548. Most appropriate word for protozoans is:

 
 
 
 

549. Which is absent from the xylem of Cycas?

 
 
 
 

550. The prothallus of fern represents the plant:

 
 
 
 

551. Asexual reproductive body of Volvox is called:

 
 
 
 

552. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

554. Botulinum toxin effects:

 
 
 
 

555. The development of Selaginella embryo is:

 
 
 
 

556. Synzoospore is produced in:

 
 
 
 

557. Diphtheria is caused by:

 
 
 
 

558. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

559. The smallest unit of classification is:

 
 
 
 

560. Desired type of Cycas can be grown by:

 
 
 
 

561. Which is a fungicide?

 
 
 
 

562. Embryophyta includes :

 
 
 
 

563. The male gametes of Pinus are :

 
 
 
 

564. The middle sterile part of capsule is called:

 
 
 
 

565. The mode of nutrition of bacteria is usually:

 
 
 
 

566. Most primitive kind of flower is represented by:

 
 
 
 

567. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. Meiosis in Ulothrix takes place:

 
 
 
 

573. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. The chloroplast in Ulothrix is :

 
 
 
 

577. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. What are Cyanobacteria?

 
 
 
 

583. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

585. Pteridophytes are also known as :

 
 
 
 

586. Late blight of potato is caused by:

 
 
 
 

587. The alga, Spirogyra are found in :

 
 
 
 

588. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

593. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

595. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Siphonogamy is found in:

 
 
 
 

600. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. The order generally ends with:

 
 
 
 

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

 
 
 
 

608. The zoospores of Ulothrix are :

 
 
 
 

609. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. John Hutchinson divided dicots into two divisions:

 
 
 
 

615. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

617. The chloroplast of Chlamydomonas are:

 
 
 
 

618. Ovary is absent in :

 
 
 
 

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

 
 
 
 

620. Winged pollen grains are found in :

 
 
 
 

621. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

623. In binomial system most of the words are:

 
 
 
 

624. Which bacteria convert nitrate into nitrogen?

 
 
 
 

625. Wine turns sour because of:

 
 
 
 

626. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

628. Ovules are not found enclosed in ovary of:

 
 
 
 

629. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

639. Protistan algae obtain their food as:

 
 
 
 

640. Fruits are not found in:

 
 
 
 

641. Coenogamete is found in:

 
 
 
 

642. Circular DNA is seen in:

 
 
 
 

643. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. 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:

 
 
 
 

648. In Gymnocarpeae the fruiting body is :

 
 
 
 

649. Enzymes are absent in:

 
 
 
 

650. Most primitive embryophytes are placed in:

 
 
 
 

651. Male gametophyte of Selaginella is found:

 
 
 
 

652. Nitrogen-fixing bacteria may be located:

 
 
 
 

653. Protists which are diploid reproduce sexually by:

 
 
 
 

654. Which fixes atmospheric nitrogen?

 
 
 
 

655.

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

 
 
 
 

657. Which of the following statement is correct?

 
 
 
 

658. What is a vector?

 
 
 
 

659. Enteric bacteria are those bacteria that live:

 
 
 
 

660. Which lichen is called Reindeer moss?

 
 
 
 

661. Tautonyms are illegitimate in:

 
 
 
 

662. The gametophyte of moss has distinct phases :

 
 
 
 

663. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

665. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

667. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. Lichens form the first community in

 
 
 
 

671. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

673. The tree fern is:

 
 
 
 

674. Generic name of mango is:

 
 
 
 

675. All algae have:

 
 
 
 

676. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

678. The most important property of yeast is:

 
 
 
 

679. 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:

 
 
 
 

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

 
 
 
 

681. What are plasmids?

 
 
 
 

682. Which is a tautonym?

 
 
 
 

683. Oswald Tippo’s classification was based on :

 
 
 
 

684. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

686. Acellular slime mold is/are:

 
 
 
 

687. Clostridium can:

 
 
 
 

688. The truncated cone of HIV consists of:

 
 
 
 

689. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Virion refers to:

 
 
 
 

693. Seeds are characteristically found in :

 
 
 
 

694. Downy mildew disease is caused by :

 
 
 
 

695. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

696. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. Bacteria growing on synthetic medium are called:

 
 
 
 

701. Leprosy is caused by:

 
 
 
 

702. Cell walls of Gram-positive bacteria contain:

 
 
 
 

703. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

705. Bacteria were first discovered by:

 
 
 
 

706. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

708. Longest known virus is:

 
 
 
 

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

 
 
 
 

710. What is mycorrhiza?

 
 
 
 

711. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

713. Yeast grows more rapidly in:

 
 
 
 

714. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

721. Metulae are found in:

 
 
 
 

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

 
 
 
 

723. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Funaria is :

 
 
 
 

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

 
 
 
 

733. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Bacteria are found everywhere, except:

 
 
 
 

737. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

741. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. Reproduction in Cycas takes place by :

 
 
 
 

749. The ferns are usually found:

 
 
 
 

750. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

754. The photosynthetic protists are:

 
 
 
 

755. An alga which is rich in proteins:

 
 
 
 

756. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

758. Which among the following is a shrub?

 
 
 
 

759. The mycelium of Rhizopus is:

 
 
 
 

760. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

762. The ascus of yeast contains:

 
 
 
 

763. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

765. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. White rust of crucifers is caused by:

 
 
 
 

772. The term stele was given by:

 
 
 
 

773. Most of the lichens are composed of :

 
 
 
 

774. 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?

 
 
 
 

775. The seedless plants which possess vascular tissues are:

 
 
 
 

776. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

778. The sporophyte of Riccia is :

 
 
 
 

779. Sexual reproduction in Rhizopus is by:

 
 
 
 

780. LSD is:

 
 
 
 

781. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

786. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

788. The microsporophylls on the cone of Cycas are :

 
 
 
 

789. The group algae possesses representatives belonging to kingdom:

 
 
 
 

790. Bryophyta have a special character from other plants:

 
 
 
 

791. The leaf of Cycas shows:

 
 
 
 

792. The gametophyte produced by apospory is :

 
 
 
 

793. Mycoplasma contains:

 
 
 
 

794. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

796. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. Germination of the seed of Pinus is :

 
 
 
 

800. In Pteris, the roots are:

 
 
 
 

801. Ulothrix produces :

 
 
 
 

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

 
 
 
 

803. Gametophyte is the main plant body in :

 
 
 
 

804. The spermatozoids of Cycas are :

 
 
 
 

805. Gram stain is used to:

 
 
 
 

806. Majority of lichens are :

 
 
 
 

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

 
 
 
 

808. Which of the following statements is not correct?

 
 
 
 

809. Citrus canker is caused by:

 
 
 
 

810. Transfusion tissue is present in the leaflet of:

 
 
 
 

811. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

812. Water-net is the name of:

 
 
 
 

813. Which of the following have a prokaryotic cell?

 
 
 
 

814. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. What is streptomycin?

 
 
 
 

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

 
 
 
 

819. Parmelia belongs to :

 
 
 
 

820. Disease resistant plant varieties can be produced by :

 
 
 
 

821. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

823. Spores of which plants have chloroplast:

 
 
 
 

824. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

826. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

828. Which of the following are included in Tracheophyta?

 
 
 
 

829. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

833. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

835. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

837. Polystelic condition is found in:

 
 
 
 

838. The megaspore of Selaginella on germination produces:

 
 
 
 

839. Liverworts are included in :

 
 
 
 

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

 
 
 
 

841. Placenta in fern is:

 
 
 
 

842. Lichens are ecologically important because :

 
 
 
 

843. The root nodules of leguminous plants contain:

 
 
 
 

844. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

846. The gametophyte of fern is as:

 
 
 
 

847. The source of litmus is :

 
 
 
 

848. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

850.

 

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

 
 
 
 

852. Embryophyta includes:

 
 
 
 

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

 
 
 
 

854. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

856. Which of the following is a monocot?

 
 
 
 

857. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. 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:

 
 
 
 

861. The chief characteristic of class Ascomycetes is:

 
 
 
 

862. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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