Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. In binomial system most of the words are:

 
 
 
 

4. Cleavage polyembryony is found in :

 
 
 
 

5. Citrus canker is caused by:

 
 
 
 

6. In Pteris, the archegonia are present:

 
 
 
 

7. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. E coli is a:

 
 
 
 

14. In Cycas:

 
 
 
 

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

 
 
 
 

16. Heterospory and ligulate leaves are a feature of:

 
 
 
 

17. Typhoid in man is caused by:

 
 
 
 

18. Select the wrong statement:

 
 
 
 

19. Cycas is :

 
 
 
 

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

 
 
 
 

21. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

23. Which of the following have algal zone?

 
 
 
 

24. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

32. The gametophyte of fern is as:

 
 
 
 

33. Pinus is:

 
 
 
 

34. Most of the algae are :

 
 
 
 

35. Which is a tautonym?

 
 
 
 

36. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

38. The megaspore of Selaginella on germination produces:

 
 
 
 

39. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Which is a redwood tree?

 
 
 
 

43. Bacteria are placed under:

 
 
 
 

44. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

46. Total parasites belong to:

 
 
 
 

47. The word “sea weeds” is used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

56. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

57. Liverworts are included in :

 
 
 
 

58. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

60. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

62. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

71. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

73. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Circular DNA is seen in:

 
 
 
 

81. In Gymnocarpeae the fruiting body is :

 
 
 
 

82. Isomorphic type alternation of generation is found in:

 
 
 
 

83. Simple polyembryony is found in :

 
 
 
 

84. Which among the following is a shrub?

 
 
 
 

85. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Nitrifying bacteria play an important role by converting:

 
 
 
 

89. In Funaria :

 
 
 
 

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

 
 
 
 

91. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

92. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

94. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97.

98. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

100. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

102. Botulism is a:

 
 
 
 

103. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

105. The most primitive vascular plants is:

 
 
 
 

106. The largest known bacterium is:

 
 
 
 

107. Most of the lichens are composed of :

 
 
 
 

108. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

110. Smut of maize is caused by :

 
 
 
 

111. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

112. In moss, calyptra is formed from:

 
 
 
 

113. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

115. The development of sporangium in Selaginella is:

 
 
 
 

116. To which country Antony van Leeuwenhoek belong?

 
 
 
 

117. Endemic plants are characterised by their:

 
 
 
 

118. Smallpox is caused by:

 
 
 
 

119. The spermatozoids of Cycas are :

 
 
 
 

120.

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

 
 
 
 

122. Tautonyms are illegitimate in:

 
 
 
 

123. Special feature of pollen grains of Pinus is :

 
 
 
 

124. Select the correct statement: (NEET 2016)

 
 
 
 

125. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. Which bacteria convert nitrate into nitrogen?

 
 
 
 

130. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

132. Bacteriophage consists of:

 
 
 
 

133. The development of Selaginella embryo is:

 
 
 
 

134. The antibiotic is obtained from:

 
 
 
 

135. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

137. Which fixes atmospheric nitrogen?

 
 
 
 

138. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. Synzoospore is produced in:

 
 
 
 

142. The role of meiosis is for:

 
 
 
 

143. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

150. Why is Cycas called a living fossil?

 
 
 
 

151. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

159. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

169. The megasporangium of Selaginella is:

 
 
 
 

170. Plasmids are:

 
 
 
 

171. Rhizoids of Riccia are :

 
 
 
 

172. Germination of the seed of Pinus is :

 
 
 
 

173. Fruits are not found in Cycas because:

 
 
 
 

174. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. First animal pathogenic virus was discovered by:

 
 
 
 

178. Generic name of mango is:

 
 
 
 

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

 
 
 
 

180. Nannandria are:

 
 
 
 

181. Reproduction in Rhizopus is:

 
 
 
 

182. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

184. In Selaginella, the microsporangia are:

 
 
 
 

185. The lichens growing on rocks are called :

 
 
 
 

186. Iodine is obtained from:

 
 
 
 

187. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

189. Who among the following discovered virus?

 
 
 
 

190. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

192. . Tapetum develops in:

 
 
 
 

193. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

195. The mycelium of Rhizopus is:

 
 
 
 

196. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

198. In Cycas microsporangia are borne on:

 
 
 
 

199. The chief characteristic of class Ascomycetes is:

 
 
 
 

200.

201. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

204. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

206. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

208. 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:

 
 
 
 

209. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

211. Ovary is absent in:

 
 
 
 

212. The two conjugating gametangia of Rhizopus are:

 
 
 
 

213. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

215. Bacteria were first discovered by:

 
 
 
 

216. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. Pasteurization of milk involves heating for:

 
 
 
 

220. Chemosynthetic bacteria are:

 
 
 
 

221. Funaria are commonly found :

 
 
 
 

222. The smallest bacterium is:

 
 
 
 

223. Photosynthetic bacteria have:

 
 
 
 

224. Pollination drop is:

 
 
 
 

225. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

227. How is moss different from fern?

 
 
 
 

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

 
 
 
 

229. Fern prothallus is:

 
 
 
 

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

 
 
 
 

231. Heterospory is the production of:

 
 
 
 

232. Spermatophyta are characterized by producing:

 
 
 
 

233. The most important property of yeast is:

 
 
 
 

234. Mycoplasmas are not viruses in nature because:

 
 
 
 

235. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. The male gametes of Pinus are :

 
 
 
 

239. Gymnosperms could also be called as:

 
 
 
 

240. Pinus microsporophyll bears:

 
 
 
 

241. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

242. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Ginkgo biloba is a:

 
 
 
 

249. Which one of the following is a monocot?

 
 
 
 

250. The sporangiophores in Rhizopus are:

 
 
 
 

251. The smallest unit of classification is:

 
 
 
 

252. Which is an edible fungus?

 
 
 
 

253. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

255. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

264. Who discovered heterothallism in fungi?

 
 
 
 

265. 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?

 
 
 
 

266. In tracheophyta:

 
 
 
 

267. Infective part of virus was discovered by:

 
 
 
 

268. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

270. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

276. Funaria is :

 
 
 
 

277. Red rot of sugarcane is caused by :

 
 
 
 

278. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. The sporangia of Selaginella are attached:

 
 
 
 

282. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

284. The leaves of Funaria are :

 
 
 
 

285. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

291. 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:

 
 
 
 

292. Which of the following statement is correct?

 
 
 
 

293. Downy mildew disease is caused by :

 
 
 
 

294. Bacteriophages have been used as:

 
 
 
 

295. Rhizopus and yeast are usually:

 
 
 
 

296. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

298. The mode of nutrition of bacteria is usually:

 
 
 
 

299. Placenta in fern is:

 
 
 
 

300. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

302. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

304. Embryophyta includes:

 
 
 
 

305. Saccharomyces is well known for:

 
 
 
 

306. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

308. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

309. 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:

 
 
 
 

310. Mucilaginous canals in Cycas are found in :

 
 
 
 

311. The first to isolate a plant virus was:

 
 
 
 

312. Black rust of wheat is caused by:

 
 
 
 

313. Interferon is a:

 
 
 
 

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

 
 
 
 

315. Genetic material of TMV is:

 
 
 
 

316. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

318. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Rhizophore of Selaginella is:

 
 
 
 

322. Common phycobiont in a lichen is :

 
 
 
 

323. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. The leaf of Cycas shows:

 
 
 
 

328. Funaria is :

 
 
 
 

329. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

331. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

333. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

335. The zoospores of Ulothrix are :

 
 
 
 

336. The Rhizopus gametes are formed in:

 
 
 
 

337. Quarantine regulations are concerned with:

 
 
 
 

338. The sexual reproductive organs in Rhizopus are:

 
 
 
 

339. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. Azolla and Salvinia both are:

 
 
 
 

347. Protists which are diploid reproduce sexually by:

 
 
 
 

348. Most resistant spore in bacteria is:

 
 
 
 

349. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

351. Indusium in Dryopteris is:

 
 
 
 

352. NBG of Lucknow is now named as:

 
 
 
 

353. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

355. Vascular cryptogam is the term used for :

 
 
 
 

356. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

358. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

364. Embryophyta includes :

 
 
 
 

365. Heterosporous pteridophytes always form:

 
 
 
 

366. The prothallus of fern represents the plant:

 
 
 
 

367. Cell walls of Gram-positive bacteria contain:

 
 
 
 

368. Penicillin is obtained from:

 
 
 
 

369. How a fern differs from a moss?

 
 
 
 

370. Cycas is:

 
 
 
 

371. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

378. Vascular cryptogams is the term used for:

 
 
 
 

379. What is mycorrhiza?

 
 
 
 

380. Usually, bacteria reproduce by:

 
 
 
 

381. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. Which of the following have a prokaryotic cell?

 
 
 
 

388. The archegonia in Selaginella develop on:

 
 
 
 

389. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Select the wrong statement:

 
 
 
 

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

 
 
 
 

399. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

401. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

403. Early blight of potato is caused by:

 
 
 
 

404. Cycas is similar to a mustard plant :

 
 
 
 

405. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

407. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

409. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

415. Roots are absent in :

 
 
 
 

416. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

417. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

419. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. The DNA of E coli is:

 
 
 
 

423. The lambda phase is a:

 
 
 
 

424. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

428. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

430. Longest known virus is:

 
 
 
 

431. What is a vector?

 
 
 
 

432. Soil fertility is lost by the activities of:

 
 
 
 

433. A gill of Agaricus:

 
 
 
 

434. The sporophyte of Riccia is represented by :

 
 
 
 

435. Protistan algae obtain their food as:

 
 
 
 

436. Viroids have:

 
 
 
 

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

 
 
 
 

438. In Cycas which structure is equivalent to stamen?

 
 
 
 

439. Oswald Tippo’s classification is:

 
 
 
 

440. Lichens are ecologically important because :

 
 
 
 

441. The ferns are usually found:

 
 
 
 

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

 
 
 
 

443. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

445. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

448. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

450. Which causes red tide?

 
 
 
 

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

 
 
 
 

452. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

454. Photosynthetic protists belong to:

 
 
 
 

455. Majority of lichens are :

 
 
 
 

456. Black rust of wheat is caused by:

 
 
 
 

457. All protozoans possess:

 
 
 
 

458. The coralloid roots are :

 
 
 
 

459. Chemosynthetic bacteria are:

 
 
 
 

460. Which of the following is a monocot?

 
 
 
 

461. Diphtheria is caused by:

 
 
 
 

462. Which one of the following statement is wrong?

 
 
 
 

463. The teeth of peristome of Funaria are :

 
 
 
 

464. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

466. Heterocysts are found in :

 
 
 
 

467. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

469. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

471. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

472. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. The tree fern is:

 
 
 
 

476. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. Small epidermal swellings due to infection are called :

 
 
 
 

480. Fertility of the soil is increased by:

 
 
 
 

481. Viruses are commonly transmitted in plants through:

 
 
 
 

482. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

484. Meristele of fern is:

 
 
 
 

485. Gram stain is used to:

 
 
 
 

486. The fungi are usually:

 
 
 
 

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

 
 
 
 

488. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. The term stele was given by:

 
 
 
 

492. Each chloroplast in Spirogyra bears :

 
 
 
 

493. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

495. Which of the following is sago palm?

 
 
 
 

496. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

499. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. Spirogyra differs from moss protonema in having :

 
 
 
 

505. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Psilotum is:

 
 
 
 

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

 
 
 
 

510. Male gametes in Dryopteris are:

 
 
 
 

511. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

512. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

515. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

518. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

520. 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?

 
 
 
 

521. The archegonia of Selaginella are differentiated by:

 
 
 
 

522. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

524. All algae have:

 
 
 
 

525. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. What is absent in Deuteromycetes?

 
 
 
 

530. Lichens reproduce by :

 
 
 
 

531. 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:

 
 
 
 

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

 
 
 
 

533. Late blight of potato is caused by:

 
 
 
 

534. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

536. 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?

 
 
 
 

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

 
 
 
 

538. The vascular bundles of Cycas stem are :

 
 
 
 

539. Cyathia is characterized by:

 
 
 
 

540. Funaria is a Bryophyta because :

 
 
 
 

541. Gametophyte is the main plant body in :

 
 
 
 

542. Streptomyces falls under:

 
 
 
 

543. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

548. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. Which of the following are included in Tracheophyta?

 
 
 
 

552. An alga which is rich in proteins:

 
 
 
 

553. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. The fungi that grow on wood are called:

 
 
 
 

559. Who named prion?

 
 
 
 

560. 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:

 
 
 
 

561. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

563. In Herpes virus DNA is:

 
 
 
 

564. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

566. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. Rhizopus belongs to:

 
 
 
 

570. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

573. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

579. LSD is:

 
 
 
 

580. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. The source of litmus is :

 
 
 
 

584. Diploxylic vascular bundles are found in:

 
 
 
 

585. Which condition is found in Cycas?

 
 
 
 

586. Which of the following are absent in Mycoplasma?

 
 
 
 

587. Desired type of Cycas can be grown by:

 
 
 
 

588. Which of the following is true for viruses?

 
 
 
 

589. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

591. The disease apple scab is caused by:

 
 
 
 

592. Ulothrix produces :

 
 
 
 

593. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Bryophyta have been placed in cryptogams because:

 
 
 
 

600. Mycoplasma are:

 
 
 
 

601. Spores of which plants have chloroplast:

 
 
 
 

602. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

604. White rust of crucifers is caused by:

 
 
 
 

605. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

614. Fern phloem lacks:

 
 
 
 

615. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Ovules are not found enclosed in ovary in :

 
 
 
 

620. Fern prothallus produces:

 
 
 
 

621. Reproduction in Cycas takes place by :

 
 
 
 

622. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

624. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

626. Coenogamete is found in:

 
 
 
 

627. Some bacteria cannot be killed easily because of:

 
 
 
 

628. The zygospore in Rhizopus on germination forms:

 
 
 
 

629. Wine turns sour because of:

 
 
 
 

630. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

632. Mycoplasma was discovered by:

 
 
 
 

633. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

635. Sleeping sickness disease in man is caused by:

 
 
 
 

636. The disease symptom necrosis refers to :

 
 
 
 

637. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

639. Most common type of conjugation in Spirogyra is :

 
 
 
 

640.

 

641. Enteric bacteria are those bacteria that live:

 
 
 
 

642. Yeast is a source of:

 
 
 
 

643. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

645. Embryo formation is not known in :

 
 
 
 

646. In dinoflagellates, the two flagella are:

 
 
 
 

647. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. Facultative parasite is:

 
 
 
 

651. Acellular slime mold is/are:

 
 
 
 

652. Broad spectrum antibiotic is, which:

 
 
 
 

653. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

655. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Selaginella differs from Moss in having:

 
 
 
 

659. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

661. Kuru, a human disease is caused by:

 
 
 
 

662. The Rhizopus is:

 
 
 
 

663. Ovules are not found enclosed in ovary in :

 
 
 
 

664. The fungi are mostly:

 
 
 
 

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

 
 
 
 

666. Which lichen is called Reindeer moss?

 
 
 
 

667. Some biologists have used the term Mycetozoa for:

 
 
 
 

668. Ethylene oxide is widely used to:

 
 
 
 

669. The order generally ends with:

 
 
 
 

670. Water-net is the name of:

 
 
 
 

671. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

675. In Funaria, calyptra is derived from :

 
 
 
 

676. Most primitive kind of flower is represented by:

 
 
 
 

677. Lichens are pioneers of vegetation in a :

 
 
 
 

678. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

680. Pythium debaryanum is the causative agent of:

 
 
 
 

681. Clostridium can:

 
 
 
 

682. Multicellular and jacketed sex organs are found in :

 
 
 
 

683. The rhizoids of Funaria are :

 
 
 
 

684. Lichens show :

 
 
 
 

685. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

687. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

689. The sporangium of fern contains nearly:

 
 
 
 

690. Agar-agar is obtained from:

 
 
 
 

691. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. To which class Riccia belongs :

 
 
 
 

697. Which of the following are included in Tracheophyta?

 
 
 
 

698. An Hfr bacterium is one that contains:

 
 
 
 

699. In moss, sporophyte is formed on:

 
 
 
 

700. John Hutchinson divided dicots into two divisions:

 
 
 
 

701. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. In moss, peristomial teeth are:

 
 
 
 

705. Which of the following is true for Selaginella?

 
 
 
 

706. One of the distinctive feature of Spirogyra is :

 
 
 
 

707. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. Chief constituents of bordeaux mixture are :

 
 
 
 

711. The leafy fern plant represents the:

 
 
 
 

712. Redness of red sea is due to :

 
 
 
 

713. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

715. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

717. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

719. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

721. Saccharomyces ludwigii ascus produces:

 
 
 
 

722. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

724. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

726. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Metulae are found in:

 
 
 
 

731. Bacteria differ from viruses in being sensitive to:

 
 
 
 

732. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Pneumonia is caused by:

 
 
 
 

737. Asexual reproductive body of Volvox is called:

 
 
 
 

738. Fairy ring is the name given to:

 
 
 
 

739. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

740. Which is an exception to cell theory?

 
 
 
 

741. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. Standard size of a herbarium sheet is:

 
 
 
 

745. Aflatoxin is produced by:

 
 
 
 

746. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

750. All archaebacteria lack:

 
 
 
 

751. Black rust of wheat is caused by:

 
 
 
 

752. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

754. Which group of algae have an incipient nucleus?

 
 
 
 

755. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

761. Number of capsomeres forming capsid of TMV is:

 
 
 
 

762. Ergot of rye is caused by:

 
 
 
 

763. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

765. What is the role of nitrifying bacteria?

 
 
 
 

766. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

773. Reserve food in Euglena is:

 
 
 
 

774. Antibiotic has been extracted from :

 
 
 
 

775. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

777. Bacteria are considered to be plants because they:

 
 
 
 

778. Which of the following does not contain chlorophyll?

 
 
 
 

779. Ectocarpus produces:

 
 
 
 

780. Fern plants are:

 
 
 
 

781. Pollination in Cycas takes place by :

 
 
 
 

782. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

791. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Polystelic condition is found in:

 
 
 
 

795. Bentham and Hooker placed gymnosperms:

 
 
 
 

796. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

797. Ovary is absent in :

 
 
 
 

798. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. The fungi used as food are:

 
 
 
 

808. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

813. Helotism word is used for the symbiosis between :

 
 
 
 

814. Pythium debaryanum is the causative agent of:

 
 
 
 

815. Green plants are classified as:

 
 
 
 

816. Most appropriate word for protozoans is:

 
 
 
 

817. Which of the following shows heterotrichous habit?

 
 
 
 

818. TMV was isolated in crystalline form by:

 
 
 
 

819. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

822. Methanogens belong to:

 
 
 
 

823. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

828. The largest alga is:

 
 
 
 

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

 
 
 
 

830. Bacteria growing on synthetic medium are called:

 
 
 
 

831. Milk is converted to curd by:

 
 
 
 

832. Oswald Tippo’s classification was based on :

 
 
 
 

833. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

835. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

837. The young leaves of Cycas have :

 
 
 
 

838. Spermatophyta are characterized by producing:

 
 
 
 

839. Bryophyta have a special character from other plants:

 
 
 
 

840. Pinus gerardiana is :

 
 
 
 

841. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

843. Which of the following lichens is harmful?

 
 
 
 

844. 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?

 
 
 
 

845. Botulinum toxin effects:

 
 
 
 

846. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

848. 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:

 
 
 
 

849. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

851. Penicillin was discovered by:

 
 
 
 

852. The tallest moss in the world is :

 
 
 
 

853. The chromosomal number in:

 
 
 
 

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

 
 
 
 

855. Germ theory of disease was proposed by:

 
 
 
 

856. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Cellular slime mold is:

 
 
 
 

863. Photoautotrophic bacteria have:

 
 
 
 

864. Lichen show :