Quiz_Random

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

 
 
 
 

2. Yeast is a source of:

 
 
 
 

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

 
 
 
 

4. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

6. TMV was isolated in crystalline form by:

 
 
 
 

7. Germination of the seed of Pinus is :

 
 
 
 

8. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. The prothallus of fern is:

 
 
 
 

14. Which of the following is a monocot?

 
 
 
 

15. Which causes red tide?

 
 
 
 

16. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

21. The source of litmus is :

 
 
 
 

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

 
 
 
 

23. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

25. Mycoplasma was discovered by:

 
 
 
 

26. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

28. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

30. How is moss different from fern?

 
 
 
 

31. Aflatoxin is produced by:

 
 
 
 

32. Small epidermal swellings due to infection are called :

 
 
 
 

33. The most important property of yeast is:

 
 
 
 

34. What is a vector?

 
 
 
 

35. Multicellular and jacketed sex organs are found in :

 
 
 
 

36. The fern plant is:

 
 
 
 

37. Mycoplasma contains:

 
 
 
 

38. Cell walls of Gram-positive bacteria contain:

 
 
 
 

39. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

41. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

42. Majority of lichens are :

 
 
 
 

43. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

45. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. What is streptomycin?

 
 
 
 

54. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

56. 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:

 
 
 
 

57. In binomial system most of the words are:

 
 
 
 

58. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

60. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

62. The ferns are usually found:

 
 
 
 

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

 
 
 
 

64. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

66. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

71. Pollination drop is:

 
 
 
 

72. Pseudomycelium is found in:

 
 
 
 

73. In Gymnosperms endosperm is a:

 
 
 
 

74. Smallpox is caused by:

 
 
 
 

75. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

77. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

82. Male gametophyte of Selaginella is found:

 
 
 
 

83. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. The largest known bacterium is:

 
 
 
 

87. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

89. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

91. Fern plants are:

 
 
 
 

92. Heterospory is the production of:

 
 
 
 

93. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

98. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

100. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

102. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

104. Pinus gerardiana is :

 
 
 
 

105. In a diplontic life cycle:

 
 
 
 

106. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

108. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

110. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

112. Ulothrix produces :

 
 
 
 

113. Metulae are found in:

 
 
 
 

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

 
 
 
 

115. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

120. Choose the correct statement about Spirogyra:

 
 
 
 

121. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. Infective part of virus was discovered by:

 
 
 
 

127. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

129. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

131. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

133. Isomorphic type alternation of generation is found in:

 
 
 
 

134. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

136. Asexual reproductive body of Volvox is called:

 
 
 
 

137. Circular DNA is seen in:

 
 
 
 

138. In angiosperms double fertilization represents:

 
 
 
 

139. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Select the correct statement: (NEET 2016)

 
 
 
 

144. Roots are absent in :

 
 
 
 

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

 
 
 
 

146. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

148. Reproduction in Rhizopus is:

 
 
 
 

149. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Ovary is absent in :

 
 
 
 

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

 
 
 
 

154. The antherozoids of Funaria are :

 
 
 
 

155. Little leaf disease of Brinjal is caused by:

 
 
 
 

156. The tallest moss in the world is :

 
 
 
 

157. The leafy fern plant represents the:

 
 
 
 

158. Heterocysts are found in :

 
 
 
 

159. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

161. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

162. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. The chloroplast in Ulothrix is :

 
 
 
 

168. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

175. The vascular bundles of Cycas stem are :

 
 
 
 

176. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

178. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181.

182. Embryophyta includes :

 
 
 
 

183. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

185. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

189. Sexual reproduction in Rhizopus is by:

 
 
 
 

190. LSD is:

 
 
 
 

191. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Which fixes atmospheric nitrogen?

 
 
 
 

195. Diploxylic vascular bundles are found in:

 
 
 
 

196. Viruses have:

 
 
 
 

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

 
 
 
 

198. Photoautotrophic bacteria have:

 
 
 
 

199. The nucleus of bacteria is:

 
 
 
 

200. Which is a fungicide?

 
 
 
 

201. Lichens are ecologically important because :

 
 
 
 

202. Heterotrichous habit means :

 
 
 
 

203. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Which group of algae have an incipient nucleus?

 
 
 
 

210. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. The Rhizopus is:

 
 
 
 

215. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

217. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. What is special feature of fern archegonia?

 
 
 
 

224. Lichens show :

 
 
 
 

225. Bacteria differ from viruses in being sensitive to:

 
 
 
 

226. The zoospores of Ulothrix are :

 
 
 
 

227. Coenogamete is found in:

 
 
 
 

228. An Hfr bacterium is one that contains:

 
 
 
 

229. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Lichens are indicators of :

 
 
 
 

233. Fruits are not found in Cycas because:

 
 
 
 

234. Who among the following discovered virus?

 
 
 
 

235. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Most of the algae are :

 
 
 
 

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

 
 
 
 

240. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. Which is absent from the xylem of Cycas?

 
 
 
 

244. Cycas is:

 
 
 
 

245. Saccharomyces is well known for:

 
 
 
 

246. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

248. Which of the following applies to Selaginella?

 
 
 
 

249. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

258. Centric discoid form of diatom is:

 
 
 
 

259. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Embryophyta includes:

 
 
 
 

263. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

265. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

266. Which is a redwood tree?

 
 
 
 

267. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

269. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

278. Fertility of the soil is increased by:

 
 
 
 

279. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

281. In moss, calyptra is formed from:

 
 
 
 

282. What is mycorrhiza?

 
 
 
 

283. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. The middle sterile part of capsule is called:

 
 
 
 

287. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Maximum diversity of life forms occurs in :

 
 
 
 

295. Ovary is absent in:

 
 
 
 

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

 
 
 
 

297. Ovules are not found enclosed in ovary of:

 
 
 
 

298. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Which of the following is true for Selaginella?

 
 
 
 

306. The sori in Dryopteris are found on:

 
 
 
 

307. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

313. 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?

 
 
 
 

314. Late blight of potato is caused by:

 
 
 
 

315. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

317. Funaria is :

 
 
 
 

318. Saccharomyces is used in:

 
 
 
 

319. Streptomyces falls under:

 
 
 
 

320. Viroids have:

 
 
 
 

321. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

323. Rhizophore of Selaginella is:

 
 
 
 

324. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. Leprosy is caused by:

 
 
 
 

328. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

330. Bryophyta have been placed in cryptogams because:

 
 
 
 

331. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

332. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

334. Nannandria are:

 
 
 
 

335. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

337. Climbers are found in genus:

 
 
 
 

338. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Sexual reproduction of lichen is due to :

 
 
 
 

343. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. Pasteurized milk is:

 
 
 
 

353. The similarity between cyanobacteria and bacteria:

 
 
 
 

354. Which of the following is true for viruses?

 
 
 
 

355. Banana bunchy top is caused by :

 
 
 
 

356. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

358. Who named prion?

 
 
 
 

359. Where does meiosis occur in yeast?

 
 
 
 

360. The leaf of Cycas shows:

 
 
 
 

361. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Which is an exception to cell theory?

 
 
 
 

365. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

369. Standard size of a herbarium sheet is:

 
 
 
 

370. Funaria is :

 
 
 
 

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

 
 
 
 

372. What is absent in Deuteromycetes?

 
 
 
 

373. Protists which are diploid reproduce sexually by:

 
 
 
 

374. The gametophyte of moss has distinct phases :

 
 
 
 

375. The megaspore of Selaginella on germination produces:

 
 
 
 

376. Heterosporous pteridophytes always form:

 
 
 
 

377. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

379. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

381. Red rot of sugarcane is caused by :

 
 
 
 

382. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

384. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

389. Most primitive embryophytes are placed in:

 
 
 
 

390. The tree fern is:

 
 
 
 

391. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

392. Some bacteria cannot be killed easily because of:

 
 
 
 

393. The sexual reproductive organs in Rhizopus are:

 
 
 
 

394. Which condition is found in Cycas?

 
 
 
 

395. The chloroplast of Chlamydomonas are:

 
 
 
 

396. The chromosomal number in:

 
 
 
 

397. Who discovered heterothallism in fungi?

 
 
 
 

398. Pasteur is famous for his:

 
 
 
 

399. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. Acellular slime mold is/are:

 
 
 
 

403.

404. Which is a gametophytic tissue?

 
 
 
 

405. The order generally ends with:

 
 
 
 

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

 
 
 
 

407. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

409. Penicillin is obtained from:

 
 
 
 

410. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

412. The role of meiosis is for:

 
 
 
 

413. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

415. Azolla growing in paddy fields helps in:

 
 
 
 

416. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

417. Water bloom is generally caused by :

 
 
 
 

418. The mycelium of Rhizopus is:

 
 
 
 

419. Most primitive group of vascular plants are:

 
 
 
 

420. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

427. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

429. The stele of Dryopteris is a:

 
 
 
 

430. Cycas is different from mango in :

 
 
 
 

431. In dinoflagellates, the two flagella are:

 
 
 
 

432. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

434. Rhizopus and yeast are usually:

 
 
 
 

435. In moss, peristomial teeth are:

 
 
 
 

436. Water-net is the name of:

 
 
 
 

437. The coralloid roots are :

 
 
 
 

438. Ergot is obtained from :

 
 
 
 

439. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

440. Fairy ring is the name given to:

 
 
 
 

441. Special feature of pollen grains of Pinus is :

 
 
 
 

442. Ergot of rye is caused by:

 
 
 
 

443. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

445. Virus and bacteriophage are made-up of:

 
 
 
 

446. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. What are plasmids?

 
 
 
 

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

 
 
 
 

451. The Rhizopus gametes are formed in:

 
 
 
 

452. Bacteria growing on synthetic medium are called:

 
 
 
 

453. 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:

 
 
 
 

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

 
 
 
 

455. Club moss and Peat moss belong to:

 
 
 
 

456. Which lichen is called Reindeer moss?

 
 
 
 

457. In Funaria, calyptra is derived from :

 
 
 
 

458. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

460. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. Endemic plants are characterised by their:

 
 
 
 

464. Cycas is :

 
 
 
 

465. Rhizoids of Riccia are :

 
 
 
 

466. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

468. Wine turns sour because of:

 
 
 
 

469. Clostridium can:

 
 
 
 

470. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

471. In moss, sporophyte is formed on:

 
 
 
 

472. Ovules are not found enclosed in ovary in :

 
 
 
 

473. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

480. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

486. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

487. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

489. Gametophyte is the main plant body in :

 
 
 
 

490. Pollination in Pinus is :

 
 
 
 

491. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

493. Diphtheria is caused by:

 
 
 
 

494. Pinus is:

 
 
 
 

495. Cycas revoluta is widely grown as :

 
 
 
 

496. All algae have:

 
 
 
 

497. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

499. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

501. The zygospore in Rhizopus on germination forms:

 
 
 
 

502. In Funaria :

 
 
 
 

503. Reproduction in Cycas takes place by :

 
 
 
 

504. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Facultative parasite is:

 
 
 
 

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

 
 
 
 

509. 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:

 
 
 
 

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

 
 
 
 

511. Black rust of wheat is caused by:

 
 
 
 

512. Each chloroplast in Spirogyra bears :

 
 
 
 

513. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

515. Kuru, a human disease is caused by:

 
 
 
 

516. In Gymnocarpeae the fruiting body is :

 
 
 
 

517. Cellular slime mold is:

 
 
 
 

518. Meiosis in Ulothrix takes place:

 
 
 
 

519. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

526. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

528. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. In Cycas:

 
 
 
 

533. Which class of Protozoa includes all parasitic forms?

 
 
 
 

534. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

536. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

544. Vascular cryptogams is the term used for:

 
 
 
 

545. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

547. Red rot of sugarcane is caused by :

 
 
 
 

548. Spermatophyta are characterized by producing:

 
 
 
 

549. Reserve food in Euglena is:

 
 
 
 

550. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

555. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

557. All protozoans possess:

 
 
 
 

558. In moss, stomata are found:

 
 
 
 

559. Fern prothallus is:

 
 
 
 

560. The microsporophylls on the cone of Cycas are :

 
 
 
 

561. The megasporangium of Selaginella is:

 
 
 
 

562. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

564. Gymnosperms could also be called as:

 
 
 
 

565. Lichens reproduce by :

 
 
 
 

566. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

570. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Psilotum is:

 
 
 
 

578. The term stele was given by:

 
 
 
 

579.

580. Oswald Tippo’s classification is:

 
 
 
 

581.

 

582. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

587. Which among the following is a shrub?

 
 
 
 

588. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

590. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. 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:

 
 
 
 

599. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

601. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. Penicillin was discovered by:

 
 
 
 

606. The archegonia in Selaginella develop on:

 
 
 
 

607. Zoogametes are not found in:

 
 
 
 

608. Synzoospore is produced in:

 
 
 
 

609. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

611. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

617. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

622. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

624. Lichens are pioneers of vegetation in a :

 
 
 
 

625. Soil fertility is lost by the activities of:

 
 
 
 

626. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

628. Virion refers to:

 
 
 
 

629. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. Which of the following have algal zone?

 
 
 
 

633. Discovery of penicillin was based on:

 
 
 
 

634. Bacteria which are spherical are called:

 
 
 
 

635. Vascular cryptogam is the term used for :

 
 
 
 

636. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

638. . Tapetum develops in:

 
 
 
 

639. Typhoid in man is caused by:

 
 
 
 

640. The sporangiophores in Rhizopus are:

 
 
 
 

641. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

644. 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:

 
 
 
 

645. Plasmids are:

 
 
 
 

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

 
 
 
 

647. The spur of Pinus roxburghii has :

 
 
 
 

648. The fungi used as food are:

 
 
 
 

649. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

651. Which is the correct statement about Selaginella?

 
 
 
 

652. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

655. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

657. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. Gram stain is used to:

 
 
 
 

670. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

671. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. In tracheophyta:

 
 
 
 

675. Which is not true for Escherichia coli?

 
 
 
 

676. Lichens reproduce by :

 
 
 
 

677. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

683. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

685. Which is a tautonym?

 
 
 
 

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

 
 
 
 

687. Pollination in Cycas takes place by :

 
 
 
 

688. Which of the following are absent in Mycoplasma?

 
 
 
 

689. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

691. Ovules are not found enclosed in ovary in :

 
 
 
 

692. Milk is converted to curd by:

 
 
 
 

693. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. The root nodules of leguminous plants contain:

 
 
 
 

698. Black rust of wheat is caused by:

 
 
 
 

699. White rust of crucifers is caused by:

 
 
 
 

700. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

702. The upper region of moss capsule is :

 
 
 
 

703. In Pteris, the archegonia are present:

 
 
 
 

704. Which of the following statements is not correct?

 
 
 
 

705. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

707. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

708. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

710. Select the wrong statement:

 
 
 
 

711. Bacteriophages have been used as:

 
 
 
 

712. Ectocarpus produces:

 
 
 
 

713. Total parasites belong to:

 
 
 
 

714. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

716. The sporophyte of Riccia is :

 
 
 
 

717. The mode of nutrition of bacteria is usually:

 
 
 
 

718. Which of the following is sago palm?

 
 
 
 

719. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

726. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

727. 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:

 
 
 
 

728. How a fern differs from a moss?

 
 
 
 

729. Chemosynthetic bacteria are:

 
 
 
 

730. The lambda phase is a:

 
 
 
 

731. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

733. E coli is a:

 
 
 
 

734. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

736. Methanogens belong to:

 
 
 
 

737. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

739. Nitrifying bacteria play an important role by converting:

 
 
 
 

740. Seeds are characteristically found in :

 
 
 
 

741. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

745. In Selaginella, the microsporangia are:

 
 
 
 

746. The fungi are mostly:

 
 
 
 

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

 
 
 
 

748. Pythium debaryanum is the causative agent of:

 
 
 
 

749. Cycas plant in appearance resembles :

 
 
 
 

750. The alga, Spirogyra are found in :

 
 
 
 

751. Which of the following lichens is harmful?

 
 
 
 

752. Lichen show :

 
 
 
 

753. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

755. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

757. Genetic material of TMV is:

 
 
 
 

758. NBG of Lucknow is now named as:

 
 
 
 

759. Botulism is a:

 
 
 
 

760. In a bacteriophage, DNA is present in:

 
 
 
 

761. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

763. Most resistant spore in bacteria is:

 
 
 
 

764. Placenta in fern is:

 
 
 
 

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

 
 
 
 

766. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

768. Mycoplasma are:

 
 
 
 

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

 
 
 
 

770. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

772. Pasteurization of milk involves heating for:

 
 
 
 

773. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

774. In moss, reduction division occurs in :

 
 
 
 

775. Spirogyra differs from moss protonema in having :

 
 
 
 

776. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

781. Green plants are classified as:

 
 
 
 

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

 
 
 
 

783. One of the distinctive feature of Spirogyra is :

 
 
 
 

784. Most primitive embryophytes are placed in :

 
 
 
 

785. Common phycobiont in a lichen is :

 
 
 
 

786. Liverworts are included in :

 
 
 
 

787. Which is not found in bacteria?

 
 
 
 

788. 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?

 
 
 
 

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

 
 
 
 

790. Generic name of mango is:

 
 
 
 

791. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

792. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

794. The chief characteristic of class Ascomycetes is:

 
 
 
 

795. Which one of the following is a monocot?

 
 
 
 

796. Cocci types of bacteria are:

 
 
 
 

797. Who discovered cyanophages?

 
 
 
 

798. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

800. The seedless plants which possess vascular tissues are:

 
 
 
 

801. Cleavage polyembryony is found in :

 
 
 
 

802. The flagella of Chlamydomonas are:

 
 
 
 

803. In moss, sporogenous tissue arises from:

 
 
 
 

804. Woody climbers are known as :

 
 
 
 

805. Bentham and Hooker placed gymnosperms:

 
 
 
 

806. Club moss is the common name of :

 
 
 
 

807. All archaebacteria lack:

 
 
 
 

808. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

810. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

812. Cryptogams include :

 
 
 
 

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

 
 
 
 

814. 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:

 
 
 
 

815. Iodine is obtained from:

 
 
 
 

816. Pteridophytes are also known as :

 
 
 
 

817. The leaves of Funaria are :

 
 
 
 

818. Some diseases caused by bacteria are:

 
 
 
 

819. The development of sporangium in Selaginella is:

 
 
 
 

820. Which of the following is a parasitic algae?

 
 
 
 

821. Proembryo in Pinus is :

 
 
 
 

822. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Pteridophyta are also called:

 
 
 
 

827. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

829. Fruiting body of lichens is :

 
 
 
 

830. In Cycas microsporangia are borne on:

 
 
 
 

831. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

833. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

835. The prothallus of fern represents the plant:

 
 
 
 

836. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

838. Which bacteria convert nitrate into nitrogen?

 
 
 
 

839. Mycoplasmas are not viruses in nature because:

 
 
 
 

840. Black rust of wheat is caused by:

 
 
 
 

841. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. Sporophyte of Funaria is :

 
 
 
 

846. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

848. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

850. Bacteria were first discovered by:

 
 
 
 

851. Heterospory and ligulate leaves are a feature of:

 
 
 
 

852. John Hutchinson divided dicots into two divisions:

 
 
 
 

853. The antibiotic is obtained from:

 
 
 
 

854. The fungi are usually:

 
 
 
 

855. Fruits are not found in:

 
 
 
 

856. 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?

 
 
 
 

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

 
 
 
 

858. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Nitrogen-fixing bacteria may be located:

 
 
 
 

863. Streptomycin is obtained from:

 
 
 
 

864. Selaginella differs from Moss in having: