Quiz_Random

1. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

3. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

8. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

14. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

16. Which is an edible fungus?

 
 
 
 

17. Viruses have:

 
 
 
 

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

 
 
 
 

19.

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

 
 
 
 

21. The smallest bacterium is:

 
 
 
 

22. What is special feature of fern archegonia?

 
 
 
 

23. The similarity between cyanobacteria and bacteria:

 
 
 
 

24. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

26. Which of the following is true for Selaginella?

 
 
 
 

27. Penicillin was discovered by:

 
 
 
 

28. . Tapetum develops in:

 
 
 
 

29. Which of the following have algal zone?

 
 
 
 

30. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

32. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

33. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Cycas is :

 
 
 
 

37. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

45. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

47. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

49. What is a vector?

 
 
 
 

50. In Pteris, the archegonia are present:

 
 
 
 

51. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Agar-agar is obtained from:

 
 
 
 

55. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

57. Mycoplasma is different from bacteria due to:

 
 
 
 

58. Ginkgo biloba is a:

 
 
 
 

59. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

61. Yeast belongs to class:

 
 
 
 

62. Cap cells are found in the filament of:

 
 
 
 

63. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

65. Small epidermal swellings due to infection are called :

 
 
 
 

66. In Selaginella, the microsporangia are:

 
 
 
 

67. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

74. Reserve food in Euglena is:

 
 
 
 

75. Select the wrong statement:

 
 
 
 

76. Smut of maize is caused by :

 
 
 
 

77. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

79. Siphonogamy is found in:

 
 
 
 

80. The chloroplast in Ulothrix is :

 
 
 
 

81. How a fern differs from a moss?

 
 
 
 

82. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

84. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

86. In moss, sporogenous tissue arises from:

 
 
 
 

87. Cyanophage is a virus that attacks:

 
 
 
 

88. Spermatophyta are characterized by producing:

 
 
 
 

89. 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:

 
 
 
 

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

 
 
 
 

91. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

96. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

97. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Gametophyte is the main plant body in :

 
 
 
 

101. The middle sterile part of capsule is called:

 
 
 
 

102. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

107. Absorptive nutrition is:

 
 
 
 

108. Mixed cropping helps :

 
 
 
 

109. Which bacteria convert nitrate into nitrogen?

 
 
 
 

110. Which is a tautonym?

 
 
 
 

111. Cocci types of bacteria are:

 
 
 
 

112. The antibiotic is obtained from:

 
 
 
 

113. Ergot is obtained from :

 
 
 
 

114. Aflatoxin is produced as a product in :

 
 
 
 

115. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

120. The development of sporangium in Selaginella is:

 
 
 
 

121. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

125. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

127. The flagella of Chlamydomonas are:

 
 
 
 

128. Halophiles are the bacteria that require for growth:

 
 
 
 

129. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

135. Heterospory and ligulate leaves are a feature of:

 
 
 
 

136. Mostly type of zygospore in Ulothrix is:

 
 
 
 

137. Club moss and Peat moss belong to:

 
 
 
 

138. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

140. Yeast is a source of:

 
 
 
 

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

 
 
 
 

142. 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?

 
 
 
 

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

 
 
 
 

144. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

146. Amoeba is a member of the phylum:

 
 
 
 

147. Proembryo in Pinus is :

 
 
 
 

148. Gymnosperms could also be called as:

 
 
 
 

149. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. The largest alga is:

 
 
 
 

153. Cycas revoluta is widely grown as :

 
 
 
 

154. Lichen show :

 
 
 
 

155. Penicillin is obtained from:

 
 
 
 

156. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

158. Mycoplasma are:

 
 
 
 

159. 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:

 
 
 
 

160. Embryophyta includes:

 
 
 
 

161. 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:

 
 
 
 

162.

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

 
 
 
 

164. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

166. Little leaf disease of Brinjal is caused by:

 
 
 
 

167. The leafy fern plant represents the:

 
 
 
 

168. The ascus of yeast contains:

 
 
 
 

169. Pneumonia is caused by:

 
 
 
 

170. Pteridophyta are also called:

 
 
 
 

171. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

173. True sexuality is not found in:

 
 
 
 

174. The young leaves of Cycas have :

 
 
 
 

175. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. Viruses are commonly transmitted in plants through:

 
 
 
 

182. The fungi used as food are:

 
 
 
 

183. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

185. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

187. Pinus microsporophyll bears:

 
 
 
 

188. Lichens form the first community in

 
 
 
 

189. In Gymnocarpeae the fruiting body is :

 
 
 
 

190. The most important property of yeast is:

 
 
 
 

191. Number of capsomeres forming capsid of TMV is:

 
 
 
 

192. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

194. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

196. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

198. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. Ovules are not found enclosed in ovary in :

 
 
 
 

203. Bryophyta have a special character from other plants:

 
 
 
 

204. The fungi are mostly:

 
 
 
 

205. Embryo formation is not known in :

 
 
 
 

206. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. All protozoans possess:

 
 
 
 

213. In Funaria, calyptra is derived from :

 
 
 
 

214. Leaf spot of groundnut is caused by :

 
 
 
 

215. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

217. Which of the following is true for viruses?

 
 
 
 

218. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. Water-net is the name of:

 
 
 
 

222. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. Which is a fungicide?

 
 
 
 

226. Which of the following are included in Tracheophyta?

 
 
 
 

227. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. The microsporophylls on the cone of Cycas are :

 
 
 
 

231. Late blight of potato is caused by :

 
 
 
 

232. Pollination drop is:

 
 
 
 

233. Black rust of wheat is caused by:

 
 
 
 

234. Mycoplasma are sensitive to:

 
 
 
 

235. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. Most primitive embryophytes are placed in:

 
 
 
 

244. Lichens are ecologically important because :

 
 
 
 

245. Fern prothallus is:

 
 
 
 

246. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

248. Red rot of sugarcane is caused by :

 
 
 
 

249. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Parmelia belongs to :

 
 
 
 

254. The gametophyte of fern bears:

 
 
 
 

255. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

265. Mycoplasmas are not viruses in nature because:

 
 
 
 

266. Synzoospore is produced in:

 
 
 
 

267. The sori in Dryopteris are found on:

 
 
 
 

268. What are plasmids?

 
 
 
 

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

 
 
 
 

270. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

281. Common phycobiont in a lichen is :

 
 
 
 

282. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

284. Fertility of the soil is increased by:

 
 
 
 

285. To which class Riccia belongs :

 
 
 
 

286. Liverworts are included in :

 
 
 
 

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

 
 
 
 

288. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

292. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

298. Cyathia is characterized by:

 
 
 
 

299. Which is an exception to cell theory?

 
 
 
 

300. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

302. Which one of the following statement is wrong?

 
 
 
 

303. Endemic plants are characterised by their:

 
 
 
 

304. Antibiotics cure the disease by:

 
 
 
 

305. Which causes red tide?

 
 
 
 

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

 
 
 
 

307. Oswald Tippo’s classification is:

 
 
 
 

308. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

310. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

312. Nannandria are:

 
 
 
 

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

 
 
 
 

314. Which is a redwood tree?

 
 
 
 

315. Fairy ring is the name given to:

 
 
 
 

316. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

321. The gametophyte produced by apospory is :

 
 
 
 

322. Cryptogams include :

 
 
 
 

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

 
 
 
 

324. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

328. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

330. The group algae possesses representatives belonging to kingdom:

 
 
 
 

331. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

333. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

335. Protozoans are considered animals because these are:

 
 
 
 

336. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Funaria is :

 
 
 
 

340. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

342. The chromosomal number in:

 
 
 
 

343. Red rot of sugarcane is caused by :

 
 
 
 

344. Fern prothallus produces:

 
 
 
 

345. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. The male gametes of Pinus are :

 
 
 
 

349. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

351. Etiology includes the study of :

 
 
 
 

352. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. Some bacteria cannot be killed easily because of:

 
 
 
 

360. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

362. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

366. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

368. Generic name of mango is:

 
 
 
 

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

 
 
 
 

370. Gram stain is used to:

 
 
 
 

371. Fruits are not found in :

 
 
 
 

372. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

377. The zygospore in Rhizopus on germination forms:

 
 
 
 

378. Simple polyembryony is found in :

 
 
 
 

379. Which class of Protozoa includes all parasitic forms?

 
 
 
 

380. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

382. The leaves of Funaria are :

 
 
 
 

383. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

387. Which have the largest antherozoid?

 
 
 
 

388. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

390. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

392. Germination of the seed of Pinus is :

 
 
 
 

393. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

396. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

398. Funaria is a Bryophyta because :

 
 
 
 

399. Reproduction in Cycas takes place by :

 
 
 
 

400. Where does meiosis occur in yeast?

 
 
 
 

401. Roots are absent in :

 
 
 
 

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

 
 
 
 

403. Desired type of Cycas can be grown by:

 
 
 
 

404. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Heterotrichous habit means :

 
 
 
 

409. Which part of Riccia bears nurse cells?

 
 
 
 

410. The fern plant is:

 
 
 
 

411. Which is the correct statement about Selaginella?

 
 
 
 

412. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

414. Most of the algae are :

 
 
 
 

415. An Hfr bacterium is one that contains:

 
 
 
 

416. What is absent in Deuteromycetes?

 
 
 
 

417. The sporophyte of Riccia is :

 
 
 
 

418. The Rhizopus is:

 
 
 
 

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

 
 
 
 

420. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

421. Early blight of potato is caused by:

 
 
 
 

422. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

424. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Germ theory of disease was proposed by:

 
 
 
 

430. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

432. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

440. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

442. The megaspore of Selaginella on germination produces:

 
 
 
 

443. The tallest moss in the world is :

 
 
 
 

444. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

446. The chloroplast of Chlamydomonas are:

 
 
 
 

447. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

449. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

455. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

457. In Pteris, the roots are:

 
 
 
 

458. An alga which is rich in proteins:

 
 
 
 

459. White rust of crucifers is caused by:

 
 
 
 

460. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

462. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

471. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

473. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

479. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

480. Kuru, a human disease is caused by:

 
 
 
 

481. All algae have:

 
 
 
 

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

 
 
 
 

483. Bacteria growing on synthetic medium are called:

 
 
 
 

484. Which of the following statements is not correct?

 
 
 
 

485. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. Citrus canker is caused by :

 
 
 
 

490. Cycas plant in appearance resembles :

 
 
 
 

491. What is mycorrhiza?

 
 
 
 

492. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

494. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Most appropriate word for protozoans is:

 
 
 
 

499. Sometimes the bacterial cell is enclosed in:

 
 
 
 

500. The central part of Funaria axis is :

 
 
 
 

501. Which of the following shows heterotrichous habit?

 
 
 
 

502. Transfusion tissue is present in the leaflet of:

 
 
 
 

503. The lambda phase is a:

 
 
 
 

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

 
 
 
 

505. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Fruiting body of lichens is :

 
 
 
 

509. Lichens are pioneers of vegetation in a :

 
 
 
 

510. Pinus is:

 
 
 
 

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

 
 
 
 

512. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

514. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

516. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

518. Longest known virus is:

 
 
 
 

519. Which group of algae have an incipient nucleus?

 
 
 
 

520. Which of the following are included in Tracheophyta?

 
 
 
 

521. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Winged seeds are found in :

 
 
 
 

525. The ferns are usually found:

 
 
 
 

526. Fruits are not found in:

 
 
 
 

527. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

529. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. Viruses are considered to be:

 
 
 
 

533. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. One of the distinctive feature of Spirogyra is :

 
 
 
 

537. Broad spectrum antibiotic is, which:

 
 
 
 

538. Vascular cryptogam is the term used for :

 
 
 
 

539. Protistan algae obtain their food as:

 
 
 
 

540. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

548. Ulothrix produces :

 
 
 
 

549. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

551. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

553. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Green plants are classified as:

 
 
 
 

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

 
 
 
 

559. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

561. Virion refers to:

 
 
 
 

562. The gametophyte of moss has distinct phases :

 
 
 
 

563. Spores of which plants have chloroplast:

 
 
 
 

564. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

566. In angiosperms double fertilization represents:

 
 
 
 

567. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

570. Seeds are characteristically found in :

 
 
 
 

571. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

573. The phloem of vascular system of Cycas is :

 
 
 
 

574. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

581. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

583. Male gametes in Dryopteris are:

 
 
 
 

584. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

586. Botulinum toxin effects:

 
 
 
 

587. Wine turns sour because of:

 
 
 
 

588. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

593. The leaves of Funaria are :

 
 
 
 

594. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

596. In moss, sporophyte is formed on:

 
 
 
 

597. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

598. Meristele of fern is:

 
 
 
 

599. Green plants are classified as :

 
 
 
 

600. Helotism word is used for the symbiosis between :

 
 
 
 

601. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

603. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. Mycoplasma was discovered by:

 
 
 
 

607. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

609. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Which of the following have a prokaryotic cell?

 
 
 
 

614. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

616. Ethylene oxide is widely used to:

 
 
 
 

617. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

621. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

623. The archegonia in Selaginella develop on:

 
 
 
 

624. Usually, bacteria reproduce by:

 
 
 
 

625. Special feature of pollen grains of Pinus is :

 
 
 
 

626. The role of meiosis is for:

 
 
 
 

627. Saccharomyces ludwigii ascus produces:

 
 
 
 

628. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

630. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

633. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. Which of the following are absent in Mycoplasma?

 
 
 
 

637. Photoautotrophic bacteria have:

 
 
 
 

638. Which of the following is a monocot?

 
 
 
 

639. Which is a gametophytic tissue?

 
 
 
 

640. Pollination in Pinus is :

 
 
 
 

641. Which statement is wrong in regard to bacteria?

 
 
 
 

642. Club moss is the common name of :

 
 
 
 

643. Detailed study of bacteriophage was made by:

 
 
 
 

644. Interferon is a:

 
 
 
 

645. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

649. Sexual reproduction of lichen is due to :

 
 
 
 

650. The disease apple scab is caused by:

 
 
 
 

651. Meiosis in Ulothrix takes place:

 
 
 
 

652. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

655. Azolla and Salvinia both are:

 
 
 
 

656. Pasteurization of milk involves heating for:

 
 
 
 

657. Infective part of virus was discovered by:

 
 
 
 

658. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

667. 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:

 
 
 
 

668. The sporangia of Selaginella are attached:

 
 
 
 

669. The coralloid roots are :

 
 
 
 

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

 
 
 
 

671. The spur of Pinus roxburghii has :

 
 
 
 

672. Pseudomycelium is found in:

 
 
 
 

673. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

675. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

677. Rice, pea, potato are :

 
 
 
 

678. Clostridium can:

 
 
 
 

679. Which is not true for Escherichia coli?

 
 
 
 

680. Circular DNA is seen in:

 
 
 
 

681. The term stele was given by:

 
 
 
 

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

 
 
 
 

683. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. The antherozoids of Funaria are :

 
 
 
 

687. Multicellular and jacketed sex organs are found in :

 
 
 
 

688. How is moss different from fern?

 
 
 
 

689. Ovary is absent in:

 
 
 
 

690. Choose the correct statement about Spirogyra:

 
 
 
 

691. In a bacteriophage, DNA is present in:

 
 
 
 

692. Vascular tissue is found in :

 
 
 
 

693. Fern phloem lacks:

 
 
 
 

694. In tracheophyta:

 
 
 
 

695. Nitrifying bacteria play an important role by converting:

 
 
 
 

696. Leprosy is caused by:

 
 
 
 

697. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. Pollination in Cycas takes place by :

 
 
 
 

702. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

707. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. Majority of lichens are :

 
 
 
 

711. Chief constituents of bordeaux mixture are :

 
 
 
 

712. Select the wrong statement:

 
 
 
 

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

 
 
 
 

714. The megasporangium of Selaginella is:

 
 
 
 

715. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

717. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

722. Sexual reproduction in Rhizopus is by:

 
 
 
 

723. What are Cyanobacteria?

 
 
 
 

724. Most primitive group of vascular plants are:

 
 
 
 

725. In Cycas:

 
 
 
 

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

 
 
 
 

727. Which is absent from the xylem of Cycas?

 
 
 
 

728. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

732. Which one of the following is a monocot?

 
 
 
 

733. The seedless plants which possess vascular tissues are:

 
 
 
 

734. Bivalved siliceous shell or frustule occur in:

 
 
 
 

735. LSD is:

 
 
 
 

736. Spirogyra represents the :

 
 
 
 

737. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Banana bunchy top is caused by :

 
 
 
 

747. Diphtheria is caused by:

 
 
 
 

748. The source of litmus is :

 
 
 
 

749. Ovules are not found enclosed in ovary of:

 
 
 
 

750. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Diploxylic vascular bundles are found in:

 
 
 
 

759. The genetic material of poxvirus is:

 
 
 
 

760. Ovary is absent in :

 
 
 
 

761. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

767. Enzymes are absent in:

 
 
 
 

768. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Sporophyte of fern is:

 
 
 
 

772. Total parasites belong to:

 
 
 
 

773. Saccharomyces is used in:

 
 
 
 

774. Fern plants are:

 
 
 
 

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

 
 
 
 

776. Which of the following statement is correct?

 
 
 
 

777.

 

778. Indusium in Dryopteris is:

 
 
 
 

779. Which among the following is a shrub?

 
 
 
 

780. First animal pathogenic virus was discovered by:

 
 
 
 

781. Cellular slime mold is:

 
 
 
 

782. Bentham and Hooker placed gymnosperms:

 
 
 
 

783. Chemosynthetic bacteria are:

 
 
 
 

784. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

788. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

790. Standard size of a herbarium sheet is:

 
 
 
 

791. Which condition is found in Cycas?

 
 
 
 

792. The archegonia of Selaginella are differentiated by:

 
 
 
 

793. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Rhizophore of Selaginella is:

 
 
 
 

797. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

799. Male gametophyte of Selaginella is found:

 
 
 
 

800. 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:

 
 
 
 

801. Which of the following does not contain chlorophyll?

 
 
 
 

802. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

807. The chief characteristic of class Ascomycetes is:

 
 
 
 

808. The sporangium of fern contains nearly:

 
 
 
 

809. Pinus gerardiana is :

 
 
 
 

810. The rhizoids of Funaria are :

 
 
 
 

811. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

813. The fungi that grow on wood are called:

 
 
 
 

814. Linnaeus is credited with introducing:

 
 
 
 

815. Typhoid in man is caused by:

 
 
 
 

816. Reproduction in Rhizopus is:

 
 
 
 

817. Isomorphic type alternation of generation is found in:

 
 
 
 

818. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

822. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

824. Citrus canker is caused by:

 
 
 
 

825. A gill of Agaricus:

 
 
 
 

826. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

827. Facultative saprophyte is:

 
 
 
 

828.

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

 
 
 
 

830. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

832. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

834. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

837. Plasmids are:

 
 
 
 

838. The smallest unit of classification is:

 
 
 
 

839. Most resistant spore in bacteria is:

 
 
 
 

840. Methanogens belong to:

 
 
 
 

841. Iodine is obtained from :

 
 
 
 

842. What is streptomycin?

 
 
 
 

843. The fungi are usually:

 
 
 
 

844. Most common type of conjugation in Spirogyra is :

 
 
 
 

845. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

847. What is the role of nitrifying bacteria?

 
 
 
 

848. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

850. The orders generally have the uniform endings:

 
 
 
 

851. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

853. Which of the following lichens is harmful?

 
 
 
 

854. The stele of Dryopteris is a:

 
 
 
 

855. Why is Cycas called a living fossil?

 
 
 
 

856. The two conjugating gametangia of Rhizopus are:

 
 
 
 

857. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

859. The mycelium of Rhizopus is:

 
 
 
 

860. Metulae are found in:

 
 
 
 

861. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

863. The nucleus of bacteria is:

 
 
 
 

864. The truncated cone of HIV consists of: