Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Indusium in Dryopteris is:

 
 
 
 

9. Rhizopus and yeast are usually:

 
 
 
 

10. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Bacteria growing on synthetic medium are called:

 
 
 
 

14. To which class Riccia belongs :

 
 
 
 

15. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

17. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

22. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

24. Red rot of sugarcane is caused by :

 
 
 
 

25. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Most of the algae are :

 
 
 
 

29. Botulism is a:

 
 
 
 

30. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Which of the following are absent in Mycoplasma?

 
 
 
 

34. Siphonogamy is found in:

 
 
 
 

35. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Saccharomyces is well known for:

 
 
 
 

39. Club moss and Peat moss belong to:

 
 
 
 

40. Embryo formation is not known in :

 
 
 
 

41. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

43. Penicillin was discovered by:

 
 
 
 

44. Black rust of wheat is caused by:

 
 
 
 

45. In dinoflagellates, the two flagella are:

 
 
 
 

46. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

48. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

50. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

52. The lambda phase is a:

 
 
 
 

53. Heterospory and ligulate leaves are a feature of:

 
 
 
 

54. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

56. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

61. Green plants are classified as:

 
 
 
 

62. Antibiotics cure the disease by:

 
 
 
 

63. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

64. Smut of maize is caused by :

 
 
 
 

65. Pythium debaryanum is the causative agent of:

 
 
 
 

66. Rhizophore of Selaginella is:

 
 
 
 

67. Which of the following have a prokaryotic cell?

 
 
 
 

68. Embryophyta includes :

 
 
 
 

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

 
 
 
 

70. Pteridophyta are also called:

 
 
 
 

71. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

73. Spirogyra represents the :

 
 
 
 

74. Amoeba is a member of the phylum:

 
 
 
 

75.

76. Ovary is absent in :

 
 
 
 

77. Which of the following lichens is harmful?

 
 
 
 

78. The smallest unit of classification is:

 
 
 
 

79. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

81. Select the wrong statement:

 
 
 
 

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

 
 
 
 

83. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Cycas is similar to a mustard plant :

 
 
 
 

87.

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

 
 
 
 

89. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

95. Which lichen is called Reindeer moss?

 
 
 
 

96. Select the wrong statement:

 
 
 
 

97. Enteric bacteria are those bacteria that live:

 
 
 
 

98. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

100. Halophiles are the bacteria that require for growth:

 
 
 
 

101. Nitrogen-fixing bacteria may be located:

 
 
 
 

102. The sporophyte of Riccia is represented by :

 
 
 
 

103. What is a vector?

 
 
 
 

104. Reserve food in Euglena is:

 
 
 
 

105. Fern prothallus is:

 
 
 
 

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

 
 
 
 

107. Fruits are not found in:

 
 
 
 

108. Mycoplasma is different from bacteria due to:

 
 
 
 

109. How is moss different from fern?

 
 
 
 

110. All algae have:

 
 
 
 

111. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

113. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

115. Which is an edible fungus?

 
 
 
 

116. Which is absent from the xylem of Cycas?

 
 
 
 

117. Smallpox is caused by:

 
 
 
 

118. In binomial system most of the words are:

 
 
 
 

119. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

121. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

122. The middle sterile part of capsule is called:

 
 
 
 

123. Funaria is a Bryophyta because :

 
 
 
 

124. Rhizoids of Riccia are :

 
 
 
 

125. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. Reproduction in Cycas takes place by :

 
 
 
 

131. The development of sporangium in Selaginella is:

 
 
 
 

132. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

134. Linnaeus is credited with introducing:

 
 
 
 

135. Heterospory is the production of:

 
 
 
 

136. Maximum diversity of life forms occurs in :

 
 
 
 

137. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

139. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

141. Funaria is :

 
 
 
 

142. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

144. Bivalved siliceous shell or frustule occur in:

 
 
 
 

145. Which of the following have algal zone?

 
 
 
 

146. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

157. To which country Antony van Leeuwenhoek belong?

 
 
 
 

158. Which group of algae have an incipient nucleus?

 
 
 
 

159. Spores of which plants have chloroplast:

 
 
 
 

160. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

169. The Rhizopus gametes are formed in:

 
 
 
 

170. 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:

 
 
 
 

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

 
 
 
 

172. Infective part of virus was discovered by:

 
 
 
 

173. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. The tallest moss in the world is :

 
 
 
 

179. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

190. Select the correct statement: (NEET 2016)

 
 
 
 

191. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

193. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

195. NBG of Lucknow is now named as:

 
 
 
 

196. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Cryptogams include :

 
 
 
 

201. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

204. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

208. Cycas is :

 
 
 
 

209. The megaspore of Selaginella on germination produces:

 
 
 
 

210. Methanogens belong to:

 
 
 
 

211. Anoxygenic photosynthesis occurs in:

 
 
 
 

212. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

214. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Which is the nuclear material in bacteria?

 
 
 
 

218. Absorptive nutrition is:

 
 
 
 

219.

220. Detailed study of bacteriophage was made by:

 
 
 
 

221. Embryophyta includes:

 
 
 
 

222. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. The upper region of moss capsule is :

 
 
 
 

227. Cycas is different from mango in :

 
 
 
 

228. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. The teeth of peristome of Funaria are :

 
 
 
 

234. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

240. Which of the following is a heterosporous pteridophyte?

 
 
 
 

241. In Gymnocarpeae the fruiting body is :

 
 
 
 

242. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

244. Pasteur is famous for his:

 
 
 
 

245. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

247. Pinus is:

 
 
 
 

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

 
 
 
 

249. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

251. Isomorphic type alternation of generation is found in:

 
 
 
 

252. Ovary is absent in:

 
 
 
 

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

 
 
 
 

254. The ascus of yeast contains:

 
 
 
 

255. The fern plant is:

 
 
 
 

256. Nitrifying bacteria play an important role by converting:

 
 
 
 

257. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. Bryophyta have a special character from other plants:

 
 
 
 

261. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

262. Climbers are found in genus:

 
 
 
 

263. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

265. Seeds are characteristically found in :

 
 
 
 

266. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. Bentham and Hooker placed gymnosperms:

 
 
 
 

270. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

275. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Virion refers to:

 
 
 
 

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

 
 
 
 

283. Total parasites belong to:

 
 
 
 

284. 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:

 
 
 
 

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

 
 
 
 

286. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

288. The prothallus of fern represents the plant:

 
 
 
 

289. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

292. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

294. Meristele of fern is:

 
 
 
 

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

 
 
 
 

296. Polystelic condition is found in:

 
 
 
 

297. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

299. Roots are absent in :

 
 
 
 

300. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

303. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

305. The leaves of Funaria are :

 
 
 
 

306. Vegetative reproduction in Cycas is by means of :

 
 
 
 

307. Mycoplasma contains:

 
 
 
 

308. Gram stain is used to:

 
 
 
 

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

 
 
 
 

310. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. The most important property of yeast is:

 
 
 
 

316. Transfusion tissue is present in the leaflet of:

 
 
 
 

317. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Usually, bacteria reproduce by:

 
 
 
 

321. Bacteria were first discovered by:

 
 
 
 

322. 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?

 
 
 
 

323. The central part of Funaria axis is :

 
 
 
 

324. John Hutchinson divided dicots into two divisions:

 
 
 
 

325. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

326. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

328. Which part of Riccia bears nurse cells?

 
 
 
 

329. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

334. The roots of Cycas are :

 
 
 
 

335. In Herpes virus DNA is:

 
 
 
 

336. Most primitive group of vascular plants are:

 
 
 
 

337. Circular DNA is seen in:

 
 
 
 

338. Pseudomycelium is found in:

 
 
 
 

339. Cyathia is characterized by:

 
 
 
 

340. What is the role of nitrifying bacteria?

 
 
 
 

341. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Protists which are diploid reproduce sexually by:

 
 
 
 

346. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

351. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

353. Diphtheria is caused by:

 
 
 
 

354. Fruits are not found in Cycas because:

 
 
 
 

355. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

357. Cap cells are found in the filament of:

 
 
 
 

358. The DNA of E coli is:

 
 
 
 

359. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

361. 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?

 
 
 
 

362. Funaria is :

 
 
 
 

363. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

364. Pasteurized milk is:

 
 
 
 

365. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

367. Club moss is the common name of :

 
 
 
 

368. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Cocci types of bacteria are:

 
 
 
 

372. Special feature of pollen grains of Pinus is :

 
 
 
 

373. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

377. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

379. All protozoans possess:

 
 
 
 

380. Genetic material of TMV is:

 
 
 
 

381. In a bacteriophage, DNA is present in:

 
 
 
 

382. The sporangia of Selaginella are attached:

 
 
 
 

383. The prothallus of fern is:

 
 
 
 

384. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

386. Which of the following does not contain chlorophyll?

 
 
 
 

387. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. Cycas is:

 
 
 
 

391. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

392. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. In moss, conducting tissue is made up of

 
 
 
 

396. Nannandria are:

 
 
 
 

397. The order generally ends with:

 
 
 
 

398. The microsporophylls on the cone of Cycas are :

 
 
 
 

399. Which of the following is a parasitic algae?

 
 
 
 

400. Meiosis in Ulothrix takes place:

 
 
 
 

401. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. Red rot of sugarcane is caused by :

 
 
 
 

405. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Ovules are not found enclosed in ovary in :

 
 
 
 

409. Winged seeds are found in :

 
 
 
 

410. The orders generally have the uniform endings:

 
 
 
 

411. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

413. Fern plants are:

 
 
 
 

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

 
 
 
 

415. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

417. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

419. In moss, peristomial teeth are:

 
 
 
 

420. . Tapetum develops in:

 
 
 
 

421. Which class of Protozoa includes all parasitic forms?

 
 
 
 

422. Gametophyte is the main plant body in :

 
 
 
 

423. The genetic material of poxvirus is:

 
 
 
 

424. Who discovered cyanophages?

 
 
 
 

425. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

427. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

429. Psilotum is:

 
 
 
 

430. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

432. The tree fern is:

 
 
 
 

433. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

435. Which have the largest antherozoid?

 
 
 
 

436. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

438. In Pteris, the archegonia are present:

 
 
 
 

439. Most resistant spore in bacteria is:

 
 
 
 

440. Funaria can be differentiated from Cycas :

 
 
 
 

441. The first to isolate a plant virus was:

 
 
 
 

442. Broad spectrum antibiotic is, which:

 
 
 
 

443. Mycoplasma are:

 
 
 
 

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

 
 
 
 

445. The sporophyte of Riccia is :

 
 
 
 

446. Ovules are not found enclosed in ovary in :

 
 
 
 

447. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

449. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

454. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

455. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

457. Most appropriate word for protozoans is:

 
 
 
 

458. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

460. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. In Selaginella, the microsporangia are:

 
 
 
 

468. Most of the lichens are composed of :

 
 
 
 

469. The fungi are mostly:

 
 
 
 

470. The Rhizopus is:

 
 
 
 

471. Antibiotic has been extracted from :

 
 
 
 

472. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

476. Ethylene oxide is widely used to:

 
 
 
 

477. Most primitive kind of flower is represented by:

 
 
 
 

478. Parmelia belongs to :

 
 
 
 

479. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

481. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

483. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Asexual reproductive body of Volvox is called:

 
 
 
 

487. Which is not true for Escherichia coli?

 
 
 
 

488. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

490. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

500. Where does meiosis occur in yeast?

 
 
 
 

501. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. Spermatophyta are characterized by producing:

 
 
 
 

505. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

507. What is special feature of fern archegonia?

 
 
 
 

508. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

510. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

512. Mixed cropping helps :

 
 
 
 

513. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

515. Number of capsomeres forming capsid of TMV is:

 
 
 
 

516. The rhizoids of Funaria are :

 
 
 
 

517. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

519. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

521. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

523. Ulothrix produces :

 
 
 
 

524. Water-borne bacterial diseases are:

 
 
 
 

525. Which of the following is sago palm?

 
 
 
 

526. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

528. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Lichens show :

 
 
 
 

532. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

534. The fungi are usually:

 
 
 
 

535. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. The spur of Pinus roxburghii has :

 
 
 
 

539. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

547. Ergot of rye is caused by:

 
 
 
 

548. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

553. LSD is:

 
 
 
 

554. Who discovered streptomycin?

 
 
 
 

555. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

557. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Which is a tautonym?

 
 
 
 

564. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

566. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

568. Rice, pea, potato are :

 
 
 
 

569. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

570. Which of the following is a monocot?

 
 
 
 

571. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

579. Lichen show :

 
 
 
 

580. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. Who named prion?

 
 
 
 

587. Which one of the following statement is wrong?

 
 
 
 

588. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

590. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. The antibiotic is obtained from:

 
 
 
 

594. Sexual reproduction of lichen is due to :

 
 
 
 

595. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

600. Cyanophage is a virus that attacks:

 
 
 
 

601. Citrus canker is caused by:

 
 
 
 

602. The sexual reproductive organs in Rhizopus are:

 
 
 
 

603. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

608. Fern phloem lacks:

 
 
 
 

609. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

611. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

617. Water-net is the name of:

 
 
 
 

618. The chief characteristic of class Ascomycetes is:

 
 
 
 

619. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

621. Penicillin is obtained from:

 
 
 
 

622. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. What is mycorrhiza?

 
 
 
 

632. Diploxylic vascular bundles are found in:

 
 
 
 

633. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. The term stele was given by:

 
 
 
 

638. In moss, reduction division occurs in :

 
 
 
 

639. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

641. In Cycas:

 
 
 
 

642. In a diplontic life cycle:

 
 
 
 

643. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

646. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. Mostly type of zygospore in Ulothrix is:

 
 
 
 

650. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

652. 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:

 
 
 
 

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

 
 
 
 

654. Plasmids are:

 
 
 
 

655. Which is a redwood tree?

 
 
 
 

656. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

659. Interferon is a:

 
 
 
 

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

 
 
 
 

661. Virus and bacteriophage are made-up of:

 
 
 
 

662. 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:

 
 
 
 

663. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. Small epidermal swellings due to infection are called :

 
 
 
 

674. What is absent in Deuteromycetes?

 
 
 
 

675. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

678. The nucleus of bacteria is:

 
 
 
 

679. Which is not found in bacteria?

 
 
 
 

680. Leaf spot of groundnut is caused by :

 
 
 
 

681. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

683. One of the distinctive feature of Spirogyra is :

 
 
 
 

684. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

686. Mucilaginous canals in Cycas are found in :

 
 
 
 

687. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. Liverworts are included in :

 
 
 
 

691. Red rot of sugarcane is caused by:

 
 
 
 

692. Photoautotrophic bacteria have:

 
 
 
 

693. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

695. Coenogamete is found in:

 
 
 
 

696. In moss, sporophyte is formed on:

 
 
 
 

697. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Vascular cryptogams is the term used for:

 
 
 
 

703. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

705. Which of the following statement is correct?

 
 
 
 

706. Heterosporous pteridophytes always form:

 
 
 
 

707. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

709. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

710. Lichens reproduce by :

 
 
 
 

711. Cycas plant in appearance resembles :

 
 
 
 

712. 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:

 
 
 
 

713. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

715. Vascular cryptogam is the term used for :

 
 
 
 

716. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

718. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

720. Iodine is obtained from :

 
 
 
 

721. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

723. Pteridophytes are also known as :

 
 
 
 

724. Water bloom is generally caused by :

 
 
 
 

725. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

726. Azolla growing in paddy fields helps in:

 
 
 
 

727. Spermatophyta are characterized by producing:

 
 
 
 

728. Viruses are commonly transmitted in plants through:

 
 
 
 

729. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

732. Seeds are characteristically found in:

 
 
 
 

733. Heterotrichous habit means :

 
 
 
 

734. Economic importance of bacteria lies in their being:

 
 
 
 

735. Fruits are not found in :

 
 
 
 

736. Viroids have:

 
 
 
 

737. Which bacteria convert nitrate into nitrogen?

 
 
 
 

738. The chromosomal number in:

 
 
 
 

739. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

741. Cell walls of Gram-positive bacteria contain:

 
 
 
 

742. 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:

 
 
 
 

743. Mycoplasma was discovered by:

 
 
 
 

744. The vascular bundles of Cycas stem are :

 
 
 
 

745. The mycelium of Rhizopus is:

 
 
 
 

746. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

748. The antherozoids of Funaria are :

 
 
 
 

749. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

750.

 

751. Late blight of potato is caused by:

 
 
 
 

752. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. Oswald Tippo’s classification is:

 
 
 
 

757. Yeast is a source of:

 
 
 
 

758. The lichens growing on rocks are called :

 
 
 
 

759. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

761. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

763. Sporophyte of fern is:

 
 
 
 

764. Cleavage polyembryony is found in :

 
 
 
 

765. In Funaria, calyptra is derived from :

 
 
 
 

766. Citrus canker is caused by :

 
 
 
 

767. The smallest bacterium is:

 
 
 
 

768. The fungi used as food are:

 
 
 
 

769. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

771. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. Mycoplasma are sensitive to:

 
 
 
 

775. What are plasmids?

 
 
 
 

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

 
 
 
 

777. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

779. The most primitive vascular plants is:

 
 
 
 

780. The source of litmus is :

 
 
 
 

781. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

783. Most common type of conjugation in Spirogyra is :

 
 
 
 

784. Which is the correct statement about Selaginella?

 
 
 
 

785. The chloroplast in Ulothrix is :

 
 
 
 

786. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

788. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

790. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

792. Milk is converted to curd by:

 
 
 
 

793. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

795. The two conjugating gametangia of Rhizopus are:

 
 
 
 

796. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

798. Little leaf disease of Brinjal is caused by:

 
 
 
 

799. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

804. Quarantine regulations are concerned with:

 
 
 
 

805. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

807. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

809. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Lichens are the indicator of pollution :

 
 
 
 

813. The disease symptom necrosis refers to :

 
 
 
 

814. Generic name of mango is:

 
 
 
 

815. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

817. Which of the following are included in Tracheophyta?

 
 
 
 

818. Sporophyte of Funaria is :

 
 
 
 

819. Which condition is found in Cycas?

 
 
 
 

820. Mycoplasmas are not viruses in nature because:

 
 
 
 

821. E coli is a:

 
 
 
 

822. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

824. Downy mildew disease is caused by :

 
 
 
 

825. Lichens are indicators of :

 
 
 
 

826. Some diseases caused by bacteria are:

 
 
 
 

827. Discovery of penicillin was based on:

 
 
 
 

828. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

830. Pythium debaryanum is the causative agent of:

 
 
 
 

831. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

833. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. Pollination drop is:

 
 
 
 

837. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

844. In tracheophyta:

 
 
 
 

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

 
 
 
 

846. Iodine is obtained from:

 
 
 
 

847. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. Pinus microsporophyll bears:

 
 
 
 

852. Ergot is obtained from :

 
 
 
 

853. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. Male gametophyte of Selaginella is found:

 
 
 
 

861. Saccharomyces ludwigii ascus produces:

 
 
 
 

862. The young leaves of Cycas have :

 
 
 
 

863. Lichens are ecologically important because :

 
 
 
 

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