Quiz_Random

1. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Ethylene oxide is widely used to:

 
 
 
 

10. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

17. In Gymnocarpeae the fruiting body is :

 
 
 
 

18. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Cocci types of bacteria are:

 
 
 
 

23. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

28. Mixed cropping helps :

 
 
 
 

29. Ovules are not found enclosed in ovary in :

 
 
 
 

30. Iodine is obtained from:

 
 
 
 

31. Which of the following statement is correct?

 
 
 
 

32. Bacteria which are spherical are called:

 
 
 
 

33. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Azolla growing in paddy fields helps in:

 
 
 
 

37. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Spermatophyta are characterized by producing:

 
 
 
 

41. Leaf spot of groundnut is caused by :

 
 
 
 

42. Fern prothallus produces:

 
 
 
 

43. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. The photosynthetic protists are:

 
 
 
 

47. In a bacteriophage, DNA is present in:

 
 
 
 

48. Which is a tautonym?

 
 
 
 

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

 
 
 
 

50. The smallest unit of classification is:

 
 
 
 

51. The gametophyte of fern bears:

 
 
 
 

52. The sporophyte of Riccia is :

 
 
 
 

53. Rhizoids of Riccia are :

 
 
 
 

54. In Funaria :

 
 
 
 

55. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. The genetic material of poxvirus is:

 
 
 
 

59. Generic name of mango is:

 
 
 
 

60. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Common phycobiont in a lichen is :

 
 
 
 

64. Black rust of wheat is caused by:

 
 
 
 

65. The fungi used as food are:

 
 
 
 

66. An alga which is rich in proteins:

 
 
 
 

67. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

72.

73. The order generally ends with:

 
 
 
 

74. The ferns are usually found:

 
 
 
 

75. Which of the following is a monocot?

 
 
 
 

76. Most appropriate word for protozoans is:

 
 
 
 

77. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

79. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Bacteriophage consists of:

 
 
 
 

83. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Lichens are pioneers of vegetation in a :

 
 
 
 

87. Chemosynthetic bacteria are:

 
 
 
 

88. Vascular cryptogams is the term used for:

 
 
 
 

89. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

91. The spermatozoids of Cycas are :

 
 
 
 

92. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

94. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

96. Photosynthetic protists belong to:

 
 
 
 

97. In a diplontic life cycle:

 
 
 
 

98. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. In Pteris, the archegonia are present:

 
 
 
 

102. The antherozoids of Funaria are :

 
 
 
 

103. Reserve food in Euglena is:

 
 
 
 

104. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

108. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

110. Lichens show :

 
 
 
 

111. The chromosomal number in:

 
 
 
 

112. Photosynthetic bacteria have:

 
 
 
 

113. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

115. Meristele of fern is:

 
 
 
 

116. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. Cyathia is characterized by:

 
 
 
 

120. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

122. Botulism is a:

 
 
 
 

123. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

130. In moss, sporophyte is formed on:

 
 
 
 

131. Who among the following discovered virus?

 
 
 
 

132. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

134. TMV was isolated in crystalline form by:

 
 
 
 

135. In moss, calyptra is formed from:

 
 
 
 

136. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

138. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. The largest alga is:

 
 
 
 

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

 
 
 
 

143. Cell walls of Gram-positive bacteria contain:

 
 
 
 

144. Cycas is :

 
 
 
 

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

 
 
 
 

146. Most primitive embryophytes are placed in :

 
 
 
 

147. The disease symptom necrosis refers to :

 
 
 
 

148. Smallpox is caused by:

 
 
 
 

149. Saccharomyces ludwigii ascus produces:

 
 
 
 

150. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

152. Why is Cycas called a living fossil?

 
 
 
 

153. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. A gill of Agaricus:

 
 
 
 

157. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

159.

 

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

 
 
 
 

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

 
 
 
 

162. Ovary is absent in :

 
 
 
 

163. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

165. Who named prion?

 
 
 
 

166. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

168. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

173. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

175. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

177. Mucilaginous canals in Cycas are found in :

 
 
 
 

178. Which is a gametophytic tissue?

 
 
 
 

179. Pollination in Cycas takes place by :

 
 
 
 

180. Which of the following shows heterotrichous habit?

 
 
 
 

181. Fern prothallus is:

 
 
 
 

182. Reproduction in Rhizopus is:

 
 
 
 

183. Economic importance of bacteria lies in their being:

 
 
 
 

184. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. In moss, peristomial teeth are:

 
 
 
 

189. Cycas is:

 
 
 
 

190. Citrus canker is caused by:

 
 
 
 

191. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

193. Winged pollen grains are found in :

 
 
 
 

194. Chemosynthetic bacteria are:

 
 
 
 

195. The tree fern is:

 
 
 
 

196. Spirogyra represents the :

 
 
 
 

197. The lambda phase is a:

 
 
 
 

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

 
 
 
 

199. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. The gametophyte of fern is as:

 
 
 
 

206. Most resistant spore in bacteria is:

 
 
 
 

207. 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:

 
 
 
 

208. Citrus canker is caused by :

 
 
 
 

209. Protistan algae obtain their food as:

 
 
 
 

210. Diphtheria is caused by:

 
 
 
 

211. What is special feature of fern archegonia?

 
 
 
 

212. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Sexual reproduction of lichen is due to :

 
 
 
 

216. What is streptomycin?

 
 
 
 

217. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

219. Centric discoid form of diatom is:

 
 
 
 

220. Mycoplasma is different from bacteria due to:

 
 
 
 

221. Yeast belongs to class:

 
 
 
 

222. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. Triple antigen injection or vaccine are for:

 
 
 
 

228. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. In moss, reduction division occurs in :

 
 
 
 

236. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

238. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

240. The megasporangium of Selaginella is:

 
 
 
 

241. Which of the following are included in Tracheophyta?

 
 
 
 

242. Viruses have:

 
 
 
 

243. Ergot is obtained from :

 
 
 
 

244. The Rhizopus is:

 
 
 
 

245. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

250. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

252. Which statement is wrong in regard to bacteria?

 
 
 
 

253. The term stele was given by:

 
 
 
 

254. The truncated cone of HIV consists of:

 
 
 
 

255. All protozoans possess:

 
 
 
 

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

 
 
 
 

257. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. The prothallus of fern represents the plant:

 
 
 
 

261. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

264. The sporangium of fern contains nearly:

 
 
 
 

265. Circular DNA is seen in:

 
 
 
 

266. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

268. Heterotrichous habit means :

 
 
 
 

269. Selaginella differs from Moss in having:

 
 
 
 

270. Which among the following is a shrub?

 
 
 
 

271. The sexual reproductive organs in Rhizopus are:

 
 
 
 

272. Pinus microsporophyll bears:

 
 
 
 

273. Rhizophore of Selaginella is:

 
 
 
 

274. Virion refers to:

 
 
 
 

275. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

280. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

282. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

288. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

290. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Parmelia belongs to :

 
 
 
 

295. Cryptogams include :

 
 
 
 

296. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

298. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

300. Fruits are not found in :

 
 
 
 

301. In moss, sporogenous tissue arises from:

 
 
 
 

302. In Cycas:

 
 
 
 

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

 
 
 
 

304. Sexual reproduction in Rhizopus is by:

 
 
 
 

305. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

307. Methanogens belong to:

 
 
 
 

308. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

310. Winged seeds are found in :

 
 
 
 

311. Asexual reproductive body of Volvox is called:

 
 
 
 

312. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Acetobacter is useful in:

 
 
 
 

318. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

327. Water bloom is generally caused by :

 
 
 
 

328. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

330. What is absent in Deuteromycetes?

 
 
 
 

331. 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:

 
 
 
 

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

 
 
 
 

333. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

336. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

338. What are plasmids?

 
 
 
 

339. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

341. The coralloid roots are :

 
 
 
 

342. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

344. Mycoplasma are:

 
 
 
 

345. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

347. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

353. One of the distinctive feature of Spirogyra is :

 
 
 
 

354. 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:

 
 
 
 

355. The nucleus of bacteria is:

 
 
 
 

356. The vascular bundles of Cycas stem are :

 
 
 
 

357. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Which is a redwood tree?

 
 
 
 

365. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

367. Zoogametes are not found in:

 
 
 
 

368. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

370. Nitrogen-fixing bacteria may be located:

 
 
 
 

371. Total parasites belong to:

 
 
 
 

372. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Most of the lichens are composed of :

 
 
 
 

379. Downy mildew disease is caused by :

 
 
 
 

380. Discovery of penicillin was based on:

 
 
 
 

381. Which have the largest antherozoid?

 
 
 
 

382. Simple polyembryony is found in :

 
 
 
 

383. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. The source of litmus is :

 
 
 
 

389. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

395. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

396. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. Which is not true for Escherichia coli?

 
 
 
 

400. Antibiotics cure the disease by:

 
 
 
 

401. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. Seeds are characteristically found in :

 
 
 
 

405. The upper region of moss capsule is :

 
 
 
 

406. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

408. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

410. 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:

 
 
 
 

411. Agar-agar is obtained from:

 
 
 
 

412. Which is a fungicide?

 
 
 
 

413. The zygospore in Rhizopus on germination forms:

 
 
 
 

414. Synzoospore is produced in:

 
 
 
 

415. Which of the following does not contain chlorophyll?

 
 
 
 

416. Broad spectrum antibiotic is, which:

 
 
 
 

417. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

419. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

421. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

423. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

428. Pythium debaryanum is the causative agent of:

 
 
 
 

429. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

434. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Ovary is absent in:

 
 
 
 

442. Protists which are diploid reproduce sexually by:

 
 
 
 

443. All algae have:

 
 
 
 

444. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

448. How is moss different from fern?

 
 
 
 

449. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

455. Each chloroplast in Spirogyra bears :

 
 
 
 

456. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

458. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

460. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

464. Psilotum is:

 
 
 
 

465. Bacteria are considered to be plants because they:

 
 
 
 

466. In tracheophyta:

 
 
 
 

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

 
 
 
 

468. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

474. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

476. Select the correct statement: (NEET 2016)

 
 
 
 

477. 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?

 
 
 
 

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

 
 
 
 

479. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

481. Milk is converted to curd by:

 
 
 
 

482. In Gymnosperms endosperm is a:

 
 
 
 

483. The gametophyte produced by apospory is :

 
 
 
 

484. Green plants are classified as:

 
 
 
 

485. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

487. 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?

 
 
 
 

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

 
 
 
 

489. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

494. Botulinum toxin effects:

 
 
 
 

495. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

497. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

499. Nannandria are:

 
 
 
 

500. To which class Riccia belongs :

 
 
 
 

501. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

503. Saccharomyces is used in:

 
 
 
 

504. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Green plants are classified as :

 
 
 
 

508. Pollination in Pinus is :

 
 
 
 

509. Maximum diversity of life forms occurs in :

 
 
 
 

510. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

511. Embryophyta includes :

 
 
 
 

512. Which class of Protozoa includes all parasitic forms?

 
 
 
 

513. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

518. Some bacteria cannot be killed easily because of:

 
 
 
 

519. The mycelium of Rhizopus is:

 
 
 
 

520. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. Protozoans are considered animals because these are:

 
 
 
 

524. Small epidermal swellings due to infection are called :

 
 
 
 

525. Bacteria differ from viruses in being sensitive to:

 
 
 
 

526. Transfusion tissue is present in the leaflet of:

 
 
 
 

527. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

530. Iodine is obtained from :

 
 
 
 

531. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

532. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

534. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

536. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Yeast is a source of:

 
 
 
 

544. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

548. In angiosperms double fertilization represents:

 
 
 
 

549. Enteric bacteria are those bacteria that live:

 
 
 
 

550. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

552. Embryo formation is not known in :

 
 
 
 

553. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. The chief characteristic of bryophyta is that :

 
 
 
 

558. Cap cells are found in the filament of:

 
 
 
 

559. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

561. Special feature of pollen grains of Pinus is :

 
 
 
 

562. Germ theory of disease was proposed by:

 
 
 
 

563. Who discovered streptomycin?

 
 
 
 

564. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Late blight of potato is caused by :

 
 
 
 

568. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. Facultative parasite is:

 
 
 
 

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

 
 
 
 

574. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. The plants of Funaria grow :

 
 
 
 

581. Male gametes in Dryopteris are:

 
 
 
 

582. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

584. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

585. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Coenogamete is found in:

 
 
 
 

590. Pasteurization of milk involves heating for:

 
 
 
 

591. The microsporophylls on the cone of Cycas are :

 
 
 
 

592. Facultative saprophyte is:

 
 
 
 

593. In Cycas microsporangia are borne on:

 
 
 
 

594. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

596. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

598. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

600. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

602. Embryophyta includes:

 
 
 
 

603. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. Climbers are found in genus:

 
 
 
 

613. Spirogyra differs from moss protonema in having :

 
 
 
 

614. Which of the following applies to Selaginella?

 
 
 
 

615. Bacteria are found everywhere, except:

 
 
 
 

616. Cyanophage is a virus that attacks:

 
 
 
 

617. Most primitive group of vascular plants are:

 
 
 
 

618. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

620. Sporophyte of fern is:

 
 
 
 

621. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

624. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Fern plants are:

 
 
 
 

629. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. The orders generally have the uniform endings:

 
 
 
 

633. Heterospory is the production of:

 
 
 
 

634. Rhizopus and yeast are usually:

 
 
 
 

635. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

636. Lichens are indicators of :

 
 
 
 

637. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

639. Fruits are not found in:

 
 
 
 

640. Lichens form the first community in

 
 
 
 

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

 
 
 
 

642. What are Cyanobacteria?

 
 
 
 

643. Ulothrix produces :

 
 
 
 

644. Late blight of potato is caused by:

 
 
 
 

645. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

647. Sometimes the bacterial cell is enclosed in:

 
 
 
 

648. Gram stain is used to:

 
 
 
 

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

 
 
 
 

650. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

651. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

654. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

656. Choose the correct statement about Spirogyra:

 
 
 
 

657. The fungi are mostly:

 
 
 
 

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

 
 
 
 

659. The sporophyte of Riccia is represented by :

 
 
 
 

660.

661. Redness of red sea is due to :

 
 
 
 

662. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

667. Etiology includes the study of :

 
 
 
 

668. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

670. The alga, Spirogyra are found in :

 
 
 
 

671. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

673. Cellular slime mold is:

 
 
 
 

674. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

675. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

677. Select the wrong statement:

 
 
 
 

678. Which of the following have algal zone?

 
 
 
 

679. The flagella of Chlamydomonas are:

 
 
 
 

680. Rhizopus belongs to:

 
 
 
 

681. The young leaves of Cycas have :

 
 
 
 

682. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

684. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

686. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. Longest known virus is:

 
 
 
 

691. Gametophyte is the main plant body in :

 
 
 
 

692. Aflatoxin is produced as a product in :

 
 
 
 

693. Seeds are characteristically found in:

 
 
 
 

694. Pneumonia is caused by:

 
 
 
 

695. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

696. Which is an edible fungus?

 
 
 
 

697. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

699. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. The leaves of Funaria are :

 
 
 
 

709. The most primitive vascular plants is:

 
 
 
 

710. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

713. Which one of the following statement is wrong?

 
 
 
 

714. Liverworts are included in :

 
 
 
 

715. The teeth of peristome of Funaria are :

 
 
 
 

716. The rhizoids of Funaria are :

 
 
 
 

717. The development of sporangium in Selaginella is:

 
 
 
 

718. Funaria are commonly found :

 
 
 
 

719. Lichens reproduce by :

 
 
 
 

720. The megaspore of Selaginella on germination produces:

 
 
 
 

721. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

723. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

725. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

730. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

732. Pythium debaryanum is the causative agent of:

 
 
 
 

733. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

735. Which is the correct statement about Selaginella?

 
 
 
 

736. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

738. Detailed study of bacteriophage was made by:

 
 
 
 

739. Funaria is :

 
 
 
 

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

 
 
 
 

741. Which of the following lichens is harmful?

 
 
 
 

742. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

744. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

745. 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?

 
 
 
 

746. 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:

 
 
 
 

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

 
 
 
 

748. In Cycas which structure is equivalent to stamen?

 
 
 
 

749. Which causes red tide?

 
 
 
 

750. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

752. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

754. Where does meiosis occur in yeast?

 
 
 
 

755. The fungi that grow on wood are called:

 
 
 
 

756. The leaves of Funaria are :

 
 
 
 

757. The DNA of E coli is:

 
 
 
 

758. Metulae are found in:

 
 
 
 

759. The chief characteristic of class Ascomycetes is:

 
 
 
 

760. Number of capsomeres forming capsid of TMV is:

 
 
 
 

761. Banana bunchy top is caused by :

 
 
 
 

762. True sexuality is not found in:

 
 
 
 

763. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

765. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

767.

768. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. LSD is:

 
 
 
 

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

 
 
 
 

773. Ectocarpus produces:

 
 
 
 

774. Disease resistant plant varieties can be produced by :

 
 
 
 

775. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

780. Among the algae kelps are :

 
 
 
 

781. In Pteris, the roots are:

 
 
 
 

782. Bryophyta have a special character from other plants:

 
 
 
 

783. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Soil fertility is lost by the activities of:

 
 
 
 

788. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

790. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. Red rot of sugarcane is caused by:

 
 
 
 

796. All archaebacteria lack:

 
 
 
 

797. Most primitive kind of flower is represented by:

 
 
 
 

798. Which of the following are absent in Mycoplasma?

 
 
 
 

799. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

804. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

806. Sporophyte of Funaria is :

 
 
 
 

807. Multicellular and jacketed sex organs are found in :

 
 
 
 

808. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

810. Cycas is different from mango in :

 
 
 
 

811. Cycas plant in appearance resembles :

 
 
 
 

812. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

814. Who discovered cyanophages?

 
 
 
 

815. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

817. Which of the following is a parasitic algae?

 
 
 
 

818. Heterospory and ligulate leaves are a feature of:

 
 
 
 

819. Pseudomycelium is found in:

 
 
 
 

820. Woody climbers are known as :

 
 
 
 

821. Lichen show :

 
 
 
 

822. Heterosporous pteridophytes always form:

 
 
 
 

823. Which is the nuclear material in bacteria?

 
 
 
 

824. Ergot of rye is caused by:

 
 
 
 

825. Vascular tissue is found in :

 
 
 
 

826. Which of the following statements is not correct?

 
 
 
 

827. The similarity between cyanobacteria and bacteria:

 
 
 
 

828. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

833. 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:

 
 
 
 

834. Roots are absent in :

 
 
 
 

835. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

837. In Selaginella, the microsporangia are:

 
 
 
 

838. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

841. The sori in Dryopteris are found on:

 
 
 
 

842. Black rust of wheat is caused by:

 
 
 
 

843. Majority of lichens are :

 
 
 
 

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

 
 
 
 

845. Genetic material of TMV is:

 
 
 
 

846. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

848. The sporangiophores in Rhizopus are:

 
 
 
 

849. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. Virus and bacteriophage are made-up of:

 
 
 
 

853. Which of the following are included in Tracheophyta?

 
 
 
 

854. Ovules are not found enclosed in ovary of:

 
 
 
 

855. Who discovered heterothallism in fungi?

 
 
 
 

856. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. Vascular cryptogam is the term used for :

 
 
 
 

860. Spores of which plants have chloroplast:

 
 
 
 

861. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Which part of Riccia bears nurse cells?