Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. The mycelium of Rhizopus is:

 
 
 
 

7. The archegonia of Selaginella are differentiated by:

 
 
 
 

8. Rhizopus belongs to:

 
 
 
 

9. Cleavage polyembryony is found in :

 
 
 
 

10. Special feature of pollen grains of Pinus is :

 
 
 
 

11. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

16. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

18. The lichens growing on rocks are called :

 
 
 
 

19. Cocci types of bacteria are:

 
 
 
 

20. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. Downy mildew disease is caused by :

 
 
 
 

25. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

30. The chloroplast in Ulothrix is :

 
 
 
 

31. Metulae are found in:

 
 
 
 

32. Meiosis in Ulothrix takes place:

 
 
 
 

33. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

38. Saccharomyces is used in:

 
 
 
 

39. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

41. Parmelia belongs to :

 
 
 
 

42. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

47. Iodine is obtained from:

 
 
 
 

48. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

50. Cycas revoluta is widely grown as :

 
 
 
 

51. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

53. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

55. The DNA of E coli is:

 
 
 
 

56. Each chloroplast in Spirogyra bears :

 
 
 
 

57. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

62. Tautonyms are illegitimate in:

 
 
 
 

63. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Clostridium can:

 
 
 
 

67. Which is an exception to cell theory?

 
 
 
 

68. Penicillin was discovered by:

 
 
 
 

69. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

71. Club moss and Peat moss belong to:

 
 
 
 

72. Diphtheria is caused by:

 
 
 
 

73. Yeast grows more rapidly in:

 
 
 
 

74. Which group of algae have an incipient nucleus?

 
 
 
 

75. Bacteria are placed under:

 
 
 
 

76. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

77. Ginkgo biloba is a:

 
 
 
 

78. 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:

 
 
 
 

79. In Herpes virus DNA is:

 
 
 
 

80. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. The microsporophylls on the cone of Cycas are :

 
 
 
 

84. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. E coli is a:

 
 
 
 

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

 
 
 
 

89.

 

90. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

92. All protozoans possess:

 
 
 
 

93. Ethylene oxide is widely used to:

 
 
 
 

94. Most primitive kind of flower is represented by:

 
 
 
 

95. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

97. Pteridophytes are also known as :

 
 
 
 

98. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

100. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Where does meiosis occur in yeast?

 
 
 
 

104. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

106. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

108. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

110. Oswald Tippo’s classification was based on :

 
 
 
 

111. The orders generally have the uniform endings:

 
 
 
 

112. Most primitive group of vascular plants are:

 
 
 
 

113. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

115. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

116. Black rust of wheat is caused by:

 
 
 
 

117.

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

 
 
 
 

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

 
 
 
 

120. Cryptogams include :

 
 
 
 

121. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

123. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. Quarantine regulations are concerned with:

 
 
 
 

127. Azolla and Salvinia both are:

 
 
 
 

128. Embryo formation is not known in :

 
 
 
 

129. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. The fungi are mostly:

 
 
 
 

134. Antibiotics cure the disease by:

 
 
 
 

135. Fruiting body of lichens is :

 
 
 
 

136. Diploxylic vascular bundles are found in:

 
 
 
 

137. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

139. Desired type of Cycas can be grown by:

 
 
 
 

140. Which of the following lichens is harmful?

 
 
 
 

141. Bivalved siliceous shell or frustule occur in:

 
 
 
 

142. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

143. 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:

 
 
 
 

144. Synzoospore is produced in:

 
 
 
 

145. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

147. Pollination in Cycas takes place by :

 
 
 
 

148. Black rust of wheat is caused by:

 
 
 
 

149. The stele of Dryopteris is a:

 
 
 
 

150. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

152. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. The leafy fern plant represents the:

 
 
 
 

156. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

158. Climbers are found in genus:

 
 
 
 

159. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

163. Green plants are classified as :

 
 
 
 

164. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

166. Vascular tissue is found in :

 
 
 
 

167. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. Aflatoxin is produced as a product in :

 
 
 
 

171. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

172. Ulothrix produces :

 
 
 
 

173. Sexual reproduction in Rhizopus is by:

 
 
 
 

174. The fern plant is:

 
 
 
 

175. Select the correct statement: (NEET 2016)

 
 
 
 

176. Virus and bacteriophage are made-up of:

 
 
 
 

177. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. The sporangia of Selaginella are attached:

 
 
 
 

182. Which lichen is called Reindeer moss?

 
 
 
 

183. Linnaeus is credited with introducing:

 
 
 
 

184. Common phycobiont in a lichen is :

 
 
 
 

185. Bryophyta have been placed in cryptogams because:

 
 
 
 

186. Pinus gerardiana is :

 
 
 
 

187. The term stele was given by:

 
 
 
 

188. The lambda phase is a:

 
 
 
 

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

 
 
 
 

190. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Lichens are the indicator of pollution :

 
 
 
 

194. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. Cycas is :

 
 
 
 

204. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. Club moss is the common name of :

 
 
 
 

208. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. What is absent in Deuteromycetes?

 
 
 
 

213. Pollination in Pinus is :

 
 
 
 

214. Pasteurization of milk involves heating for:

 
 
 
 

215. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

217. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. Discovery of penicillin was based on:

 
 
 
 

227. Mucilaginous canals in Cycas are found in :

 
 
 
 

228. The role of meiosis is for:

 
 
 
 

229. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

231. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Which condition is found in Cycas?

 
 
 
 

236. Sporophyte of Funaria is :

 
 
 
 

237. Which of the following have a prokaryotic cell?

 
 
 
 

238. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. Bacteria which are spherical are called:

 
 
 
 

242. Late blight of potato is caused by:

 
 
 
 

243. Which of the following are absent in Mycoplasma?

 
 
 
 

244. Most resistant spore in bacteria is:

 
 
 
 

245. The sporophyte of Riccia is represented by :

 
 
 
 

246. Protists which are diploid reproduce sexually by:

 
 
 
 

247. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Amoeba is a member of the phylum:

 
 
 
 

252. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

254. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

256. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. Bacteria are found everywhere, except:

 
 
 
 

267. 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:

 
 
 
 

268. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Chemosynthetic bacteria are:

 
 
 
 

278. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. The upper region of moss capsule is :

 
 
 
 

283. Ovules are not found enclosed in ovary in :

 
 
 
 

284. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

286. Water bloom is generally caused by :

 
 
 
 

287. Mycoplasma was discovered by:

 
 
 
 

288. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

290. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

292. Green plants are classified as:

 
 
 
 

293. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

295. Late blight of potato is caused by :

 
 
 
 

296. Meristele of fern is:

 
 
 
 

297. Fern phloem lacks:

 
 
 
 

298. In moss, calyptra is formed from:

 
 
 
 

299. Which is a fungicide?

 
 
 
 

300. Longest known virus is:

 
 
 
 

301. Rice, pea, potato are :

 
 
 
 

302. Penicillin is obtained from:

 
 
 
 

303. Fern prothallus is:

 
 
 
 

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

 
 
 
 

305. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

307. Fruits are not found in :

 
 
 
 

308. Citrus canker is caused by:

 
 
 
 

309. What is the role of nitrifying bacteria?

 
 
 
 

310. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

312. 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?

 
 
 
 

313. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

315. The male gametes of Pinus are :

 
 
 
 

316. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

318. In moss, sporophyte is formed on:

 
 
 
 

319. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

321. LSD is:

 
 
 
 

322. In a diplontic life cycle:

 
 
 
 

323. In Cycas:

 
 
 
 

324. Red rot of sugarcane is caused by:

 
 
 
 

325. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

328. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

329. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Simple polyembryony is found in :

 
 
 
 

336. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Pseudomycelium is found in:

 
 
 
 

340. The chromosomal number in:

 
 
 
 

341. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. The sporangium of fern contains nearly:

 
 
 
 

346. Pollination drop is:

 
 
 
 

347. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

349. An Hfr bacterium is one that contains:

 
 
 
 

350. The coralloid roots are :

 
 
 
 

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

 
 
 
 

352. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

354. Generic name of mango is:

 
 
 
 

355. Bacteriophages have been used as:

 
 
 
 

356. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

357. Ovules are not found enclosed in ovary in :

 
 
 
 

358. Funaria is :

 
 
 
 

359. The genetic material of poxvirus is:

 
 
 
 

360. What is a vector?

 
 
 
 

361. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. Enteric bacteria are those bacteria that live:

 
 
 
 

368. Spirogyra differs from moss protonema in having :

 
 
 
 

369. Funaria is :

 
 
 
 

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

 
 
 
 

371. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

373. Coenogamete is found in:

 
 
 
 

374. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

376. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

378. Among the algae kelps are :

 
 
 
 

379. Anoxygenic photosynthesis occurs in:

 
 
 
 

380. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

386. Protozoans are considered animals because these are:

 
 
 
 

387. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

389. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

391. The young leaves of Cycas have :

 
 
 
 

392. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

396. Sometimes the bacterial cell is enclosed in:

 
 
 
 

397. Funaria is a Bryophyta because :

 
 
 
 

398. Ovary is absent in:

 
 
 
 

399. Embryophyta includes :

 
 
 
 

400. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

402. Most of the algae are :

 
 
 
 

403. Some bacteria cannot be killed easily because of:

 
 
 
 

404. Red rot of sugarcane is caused by :

 
 
 
 

405. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

407. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412.

413. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

415. In dinoflagellates, the two flagella are:

 
 
 
 

416. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

418. Smut of maize is caused by :

 
 
 
 

419. The vascular bundles of Cycas stem are :

 
 
 
 

420. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

422. Which is a gametophytic tissue?

 
 
 
 

423. Cycas is:

 
 
 
 

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

 
 
 
 

425. Acellular slime mold is/are:

 
 
 
 

426. The development of Selaginella embryo is:

 
 
 
 

427. The source of litmus is :

 
 
 
 

428. The smallest bacterium is:

 
 
 
 

429. 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:

 
 
 
 

430. Funaria can be differentiated from Cycas :

 
 
 
 

431. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

433. Polystelic condition is found in:

 
 
 
 

434. Mycoplasma are sensitive to:

 
 
 
 

435. The mode of nutrition of bacteria is usually:

 
 
 
 

436. The largest alga is:

 
 
 
 

437. Red rot of sugarcane is caused by :

 
 
 
 

438. In Funaria :

 
 
 
 

439. 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:

 
 
 
 

440. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

442. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Asexual reproductive body of Volvox is called:

 
 
 
 

447. 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?

 
 
 
 

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

 
 
 
 

449. Select the wrong statement:

 
 
 
 

450. What is mycorrhiza?

 
 
 
 

451. Roots are absent in :

 
 
 
 

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

 
 
 
 

453. The most important property of yeast is:

 
 
 
 

454. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. Which of the following is sago palm?

 
 
 
 

458. Rhizoids of Riccia are :

 
 
 
 

459. Select the wrong statement:

 
 
 
 

460. True sexuality is not found in:

 
 
 
 

461. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

463. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. The fungi that grow on wood are called:

 
 
 
 

467. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

473. Methanogens belong to:

 
 
 
 

474. The Rhizopus gametes are formed in:

 
 
 
 

475. Woody climbers are known as :

 
 
 
 

476. Choose the correct statement about Spirogyra:

 
 
 
 

477. The teeth of peristome of Funaria are :

 
 
 
 

478. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

480. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

486. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

488. Cyathia is characterized by:

 
 
 
 

489. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

491. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

493. Infective part of virus was discovered by:

 
 
 
 

494. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

499. 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?

 
 
 
 

500. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

502. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

504. Leprosy is caused by:

 
 
 
 

505. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. 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:

 
 
 
 

509. Lichens form the first community in

 
 
 
 

510. Transfusion tissue is present in the leaflet of:

 
 
 
 

511. In binomial system most of the words are:

 
 
 
 

512. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. Bacteria growing on synthetic medium are called:

 
 
 
 

517. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

519. How is moss different from fern?

 
 
 
 

520. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

522. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

524. Which of the following is a heterosporous pteridophyte?

 
 
 
 

525. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

527. The tree fern is:

 
 
 
 

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

 
 
 
 

529. In Cycas microsporangia are borne on:

 
 
 
 

530. Etiology includes the study of :

 
 
 
 

531. Detailed study of bacteriophage was made by:

 
 
 
 

532. The disease apple scab is caused by:

 
 
 
 

533. Mycoplasma are:

 
 
 
 

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

 
 
 
 

535. Fruits are not found in:

 
 
 
 

536. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

538. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

545. Which one of the following is a monocot?

 
 
 
 

546. Small epidermal swellings due to infection are called :

 
 
 
 

547. Heterocysts are found in :

 
 
 
 

548. The fungi used as food are:

 
 
 
 

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

 
 
 
 

550. Facultative saprophyte is:

 
 
 
 

551. Which of the following statements is not correct?

 
 
 
 

552. The most primitive vascular plants is:

 
 
 
 

553. Facultative parasite is:

 
 
 
 

554. To which class Riccia belongs :

 
 
 
 

555. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

557. Viroids have:

 
 
 
 

558. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. The ascus of yeast contains:

 
 
 
 

567. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

568. Heterospory and ligulate leaves are a feature of:

 
 
 
 

569. A gill of Agaricus:

 
 
 
 

570. 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:

 
 
 
 

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

 
 
 
 

572. All algae have:

 
 
 
 

573. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

580. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

582. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. The flagella of Chlamydomonas are:

 
 
 
 

590. Male gametophyte of Selaginella is found:

 
 
 
 

591. Chief constituents of bordeaux mixture are :

 
 
 
 

592. The rhizoids of Funaria are :

 
 
 
 

593. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. The chief characteristic of class Ascomycetes is:

 
 
 
 

597. Pteridophyta are also called:

 
 
 
 

598. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

600. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

602. Mostly type of zygospore in Ulothrix is:

 
 
 
 

603. Mycoplasma contains:

 
 
 
 

604. Viruses are commonly transmitted in plants through:

 
 
 
 

605. Heterotrichous habit means :

 
 
 
 

606. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

608. Bryophyta have a special character from other plants:

 
 
 
 

609. Which organisms are the oldest life forms?

 
 
 
 

610. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

612. Winged seeds are found in :

 
 
 
 

613. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

615. Most primitive embryophytes are placed in :

 
 
 
 

616. Placenta in fern is:

 
 
 
 

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

 
 
 
 

618. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

620. Bacteria differ from viruses in being sensitive to:

 
 
 
 

621. The roots of Cycas are :

 
 
 
 

622. Which part of Riccia bears nurse cells?

 
 
 
 

623. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

628. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

633. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

635. 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?

 
 
 
 

636. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

638. . Tapetum develops in:

 
 
 
 

639. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

642. Photosynthetic bacteria have:

 
 
 
 

643. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

655. What is streptomycin?

 
 
 
 

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

 
 
 
 

657. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

659. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

661. Heterosporous pteridophytes always form:

 
 
 
 

662. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

664. Male gametes in Dryopteris are:

 
 
 
 

665.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. The order generally ends with:

 
 
 
 

670. In Cycas the fertilization is:

 
 
 
 

671. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

675. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

677. Which class of Protozoa includes all parasitic forms?

 
 
 
 

678. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Zoogametes are not found in:

 
 
 
 

690. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

692. Interferon is a:

 
 
 
 

693. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

695. Vascular cryptogam is the term used for :

 
 
 
 

696. White rust of crucifers is caused by:

 
 
 
 

697. Siphonogamy is found in:

 
 
 
 

698. Rhizophore of Selaginella is:

 
 
 
 

699. Vegetative reproduction in Cycas is by means of :

 
 
 
 

700. The leaf of Cycas shows:

 
 
 
 

701. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

703. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

705. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

707. Mixed cropping helps :

 
 
 
 

708. Water-borne bacterial diseases are:

 
 
 
 

709. Sleeping sickness disease in man is caused by:

 
 
 
 

710. Gram stain is used to:

 
 
 
 

711. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

713. Disease resistant plant varieties can be produced by :

 
 
 
 

714. The archegonia in Selaginella develop on:

 
 
 
 

715. Most primitive embryophytes are placed in:

 
 
 
 

716. Number of capsomeres forming capsid of TMV is:

 
 
 
 

717. Which is not found in bacteria?

 
 
 
 

718. Sporophyte of fern is:

 
 
 
 

719. Liverworts are included in :

 
 
 
 

720. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

723. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

725. Embryophyta includes:

 
 
 
 

726. The spermatozoids of Cycas are :

 
 
 
 

727. Lichens show :

 
 
 
 

728. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

730. The phloem of vascular system of Cycas is :

 
 
 
 

731. In moss, conducting tissue is made up of

 
 
 
 

732. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. Chemosynthetic bacteria are:

 
 
 
 

738. Nannandria are:

 
 
 
 

739. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

741. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. Viruses have:

 
 
 
 

745. The ferns are usually found:

 
 
 
 

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

 
 
 
 

747. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

749. The seedless plants which possess vascular tissues are:

 
 
 
 

750. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

752. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

754. Most appropriate word for protozoans is:

 
 
 
 

755. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

757. The smallest unit of classification is:

 
 
 
 

758. Which bacteria convert nitrate into nitrogen?

 
 
 
 

759. Pythium debaryanum is the causative agent of:

 
 
 
 

760. Which of the following is a parasitic algae?

 
 
 
 

761. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

762. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

764. Isomorphic type alternation of generation is found in:

 
 
 
 

765. Nitrogen-fixing bacteria may be located:

 
 
 
 

766. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

768. Protistan algae obtain their food as:

 
 
 
 

769. Ergot of rye is caused by:

 
 
 
 

770. Indusium in Dryopteris is:

 
 
 
 

771. Citrus canker is caused by :

 
 
 
 

772. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

774. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Oswald Tippo’s classification is:

 
 
 
 

779. Who named prion?

 
 
 
 

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

 
 
 
 

781. Which causes red tide?

 
 
 
 

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

 
 
 
 

783. What are plasmids?

 
 
 
 

784. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

789. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

791. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Centric discoid form of diatom is:

 
 
 
 

795. First animal pathogenic virus was discovered by:

 
 
 
 

796. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. How a fern differs from a moss?

 
 
 
 

802. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

803. Water-net is the name of:

 
 
 
 

804. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

806. Lichen show :

 
 
 
 

807. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. Which is not true for Escherichia coli?

 
 
 
 

811. In moss, stomata are found:

 
 
 
 

812. Ovules are not found enclosed in ovary of:

 
 
 
 

813. Some biologists have used the term Mycetozoa for:

 
 
 
 

814. Who discovered streptomycin?

 
 
 
 

815. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

817. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. The first to isolate a plant virus was:

 
 
 
 

822. Reserve food in Euglena is:

 
 
 
 

823. The zygospore in Rhizopus on germination forms:

 
 
 
 

824. The chief characteristic of bryophyta is that :

 
 
 
 

825. Cycas plant in appearance resembles :

 
 
 
 

826. Botulinum toxin effects:

 
 
 
 

827. Majority of lichens are :

 
 
 
 

828. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. Botulism is a:

 
 
 
 

837. The two conjugating gametangia of Rhizopus are:

 
 
 
 

838. Which fixes atmospheric nitrogen?

 
 
 
 

839. Heterospory is the production of:

 
 
 
 

840. Standard size of a herbarium sheet is:

 
 
 
 

841. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. What is special feature of fern archegonia?

 
 
 
 

849. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

851. Bacteria were first discovered by:

 
 
 
 

852. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

856. In Gymnosperms endosperm is a:

 
 
 
 

857. Bentham and Hooker placed gymnosperms:

 
 
 
 

858. Ovary is absent in :

 
 
 
 

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

 
 
 
 

860. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

861. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

863. Which of the following does not contain chlorophyll?

 
 
 
 

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