Quiz_Random

1. The development of Selaginella embryo is:

 
 
 
 

2. Iodine is obtained from:

 
 
 
 

3. Synzoospore is produced in:

 
 
 
 

4. The root nodules of leguminous plants contain:

 
 
 
 

5. Which is a fungicide?

 
 
 
 

6. Which class of Protozoa includes all parasitic forms?

 
 
 
 

7. Fern prothallus produces:

 
 
 
 

8. Heterospory and ligulate leaves are a feature of:

 
 
 
 

9.

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

 
 
 
 

11. Embryophyta includes :

 
 
 
 

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

 
 
 
 

13. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

15. All archaebacteria lack:

 
 
 
 

16. Azolla growing in paddy fields helps in:

 
 
 
 

17. What is a vector?

 
 
 
 

18. Botulism is a:

 
 
 
 

19. John Hutchinson divided dicots into two divisions:

 
 
 
 

20. Rhizoids of Riccia are :

 
 
 
 

21. Ovary is absent in :

 
 
 
 

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

 
 
 
 

23. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

25. Funaria is a Bryophyta because :

 
 
 
 

26. A gill of Agaricus:

 
 
 
 

27. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Winged seeds are found in :

 
 
 
 

32. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

33. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Desired type of Cycas can be grown by:

 
 
 
 

38. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

40. The leaves of Funaria are :

 
 
 
 

41. The two conjugating gametangia of Rhizopus are:

 
 
 
 

42. Methanogens belong to:

 
 
 
 

43. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

45. Parmelia belongs to :

 
 
 
 

46. Most primitive kind of flower is represented by:

 
 
 
 

47. Which is the correct statement about Selaginella?

 
 
 
 

48. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Which is absent from the xylem of Cycas?

 
 
 
 

52. Ulothrix produces :

 
 
 
 

53. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

56. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

60. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

62. The gametophyte of moss has distinct phases :

 
 
 
 

63. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

65. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

67. The fungi are usually:

 
 
 
 

68. Gram stain is used to:

 
 
 
 

69. Sometimes the bacterial cell is enclosed in:

 
 
 
 

70. Meiosis in Ulothrix takes place:

 
 
 
 

71. Woody climbers are known as :

 
 
 
 

72. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Who discovered streptomycin?

 
 
 
 

76. Anoxygenic photosynthesis occurs in:

 
 
 
 

77. 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:

 
 
 
 

78. The Rhizopus gametes are formed in:

 
 
 
 

79. The sporangium of fern contains nearly:

 
 
 
 

80. Some biologists have used the term Mycetozoa for:

 
 
 
 

81. The mode of nutrition of bacteria is usually:

 
 
 
 

82. Spirogyra differs from moss protonema in having :

 
 
 
 

83. Male gametes in Dryopteris are:

 
 
 
 

84. Cyanophage is a virus that attacks:

 
 
 
 

85. The source of litmus is :

 
 
 
 

86. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Who named prion?

 
 
 
 

90. Circular DNA is seen in:

 
 
 
 

91. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

93. 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?

 
 
 
 

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

 
 
 
 

95. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Heterosporous pteridophytes always form:

 
 
 
 

99. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Bacteria growing on synthetic medium are called:

 
 
 
 

107. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

109. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

111. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

113. Oswald Tippo’s classification is:

 
 
 
 

114. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

118. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

120. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

122. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

124. Which of the following shows heterotrichous habit?

 
 
 
 

125. The prothallus of fern is:

 
 
 
 

126. Which is a redwood tree?

 
 
 
 

127. Which is not found in bacteria?

 
 
 
 

128. Milk is converted to curd by:

 
 
 
 

129. Water bloom is generally caused by :

 
 
 
 

130. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

132. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

134. Ectocarpus produces:

 
 
 
 

135. Ergot is obtained from :

 
 
 
 

136. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Lichens are indicators of :

 
 
 
 

141. Male gametophyte of Selaginella is found:

 
 
 
 

142. Which of the following does not contain chlorophyll?

 
 
 
 

143. Bryophyta have a special character from other plants:

 
 
 
 

144. Cycas plant in appearance resembles :

 
 
 
 

145. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

146. Saccharomyces is used in:

 
 
 
 

147. Bacteria are found everywhere, except:

 
 
 
 

148. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

150. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Absorptive nutrition is:

 
 
 
 

154. Water-borne bacterial diseases are:

 
 
 
 

155. The truncated cone of HIV consists of:

 
 
 
 

156. In angiosperms double fertilization represents:

 
 
 
 

157. Seeds are characteristically found in :

 
 
 
 

158. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Select the correct statement: (NEET 2016)

 
 
 
 

166. The largest known bacterium is:

 
 
 
 

167. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

169. Endemic plants are characterised by their:

 
 
 
 

170. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

172. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Fern plants are:

 
 
 
 

177. Club moss and Peat moss belong to:

 
 
 
 

178. In Cycas microsporangia are borne on:

 
 
 
 

179. In moss, sporophyte is formed on:

 
 
 
 

180. Vascular tissue is found in :

 
 
 
 

181. Ovules are not found enclosed in ovary in :

 
 
 
 

182. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

184. Funaria can be differentiated from Cycas :

 
 
 
 

185. Which of the following are included in Tracheophyta?

 
 
 
 

186. Which of the following is a heterosporous pteridophyte?

 
 
 
 

187. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

189. Streptomycin is obtained from:

 
 
 
 

190. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Most of the lichens are composed of :

 
 
 
 

194. The group algae possesses representatives belonging to kingdom:

 
 
 
 

195. Spermatophyta are characterized by producing:

 
 
 
 

196. The seedless plants which possess vascular tissues are:

 
 
 
 

197. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

199. Pteridophytes are also known as :

 
 
 
 

200. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

210. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

212. Mycoplasma are sensitive to:

 
 
 
 

213. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. The chromosomal number in:

 
 
 
 

217. In moss, peristomial teeth are:

 
 
 
 

218. Agar-agar is obtained from:

 
 
 
 

219. The role of meiosis is for:

 
 
 
 

220. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

222. Which of the following have a prokaryotic cell?

 
 
 
 

223. Mycoplasma are:

 
 
 
 

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

 
 
 
 

225. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. To which country Antony van Leeuwenhoek belong?

 
 
 
 

234. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

236. Which of the following is true for viruses?

 
 
 
 

237. Where does meiosis occur in yeast?

 
 
 
 

238. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

240. Reproduction in Cycas takes place by :

 
 
 
 

241. Embryophyta includes:

 
 
 
 

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

 
 
 
 

243. The phloem of vascular system of Cycas is :

 
 
 
 

244. The megaspore of Selaginella on germination produces:

 
 
 
 

245. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

246. In moss, calyptra is formed from:

 
 
 
 

247. Detailed study of bacteriophage was made by:

 
 
 
 

248. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. 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:

 
 
 
 

253. Which condition is found in Cycas?

 
 
 
 

254. In Selaginella, the microsporangia are:

 
 
 
 

255. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

257.

 

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

 
 
 
 

259. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Viruses have:

 
 
 
 

263. Funaria is :

 
 
 
 

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

 
 
 
 

265. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

267. The plants of Funaria grow :

 
 
 
 

268. Discovery of penicillin was based on:

 
 
 
 

269. In Pteris, the archegonia are present:

 
 
 
 

270. Cycas is :

 
 
 
 

271. Downy mildew disease is caused by :

 
 
 
 

272. To which class Riccia belongs :

 
 
 
 

273. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

275. Protistan algae obtain their food as:

 
 
 
 

276. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

278. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

280. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

281. Fertility of the soil is increased by:

 
 
 
 

282. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

284. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

291. Why is Cycas called a living fossil?

 
 
 
 

292. True sexuality is not found in:

 
 
 
 

293. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

295. Selaginella differs from Moss in having:

 
 
 
 

296. What are plasmids?

 
 
 
 

297. Psilotum is:

 
 
 
 

298. Ovules are not found enclosed in ovary of:

 
 
 
 

299. Fruits are not found in:

 
 
 
 

300. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

302. 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:

 
 
 
 

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

 
 
 
 

304. Bacteriophage consists of:

 
 
 
 

305. Pollination in Cycas takes place by :

 
 
 
 

306. An Hfr bacterium is one that contains:

 
 
 
 

307. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

309. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

311. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

316. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

318. Fairy ring is the name given to:

 
 
 
 

319. Lichens form the first community in

 
 
 
 

320. Antibiotic has been extracted from :

 
 
 
 

321. Which is the nuclear material in bacteria?

 
 
 
 

322. All algae have:

 
 
 
 

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

 
 
 
 

324. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

326. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

327. In tracheophyta:

 
 
 
 

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

 
 
 
 

329. Triple antigen injection or vaccine are for:

 
 
 
 

330. Which group of algae have an incipient nucleus?

 
 
 
 

331. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

333. 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:

 
 
 
 

334. Vascular cryptogam is the term used for :

 
 
 
 

335. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

337. The fern plant is:

 
 
 
 

338. Which is a tautonym?

 
 
 
 

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

 
 
 
 

340. Facultative parasite is:

 
 
 
 

341. Rhizophore of Selaginella is:

 
 
 
 

342. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Among the algae kelps are :

 
 
 
 

346. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Oswald Tippo’s classification was based on :

 
 
 
 

351. Which of the following is a parasitic algae?

 
 
 
 

352. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. Pneumonia is caused by:

 
 
 
 

357. Pythium debaryanum is the causative agent of:

 
 
 
 

358. Little leaf disease of Brinjal is caused by:

 
 
 
 

359. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

360. Ginkgo biloba is a:

 
 
 
 

361. Vascular cryptogams is the term used for:

 
 
 
 

362. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

364. Who among the following discovered virus?

 
 
 
 

365. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

370. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

376. Acetobacter is useful in:

 
 
 
 

377. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. Kuru, a human disease is caused by:

 
 
 
 

381. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Streptomyces falls under:

 
 
 
 

385. Banana bunchy top is caused by :

 
 
 
 

386. The order generally ends with:

 
 
 
 

387. Which is an exception to cell theory?

 
 
 
 

388. The mycelium of Rhizopus is:

 
 
 
 

389. Cycas revoluta is widely grown as :

 
 
 
 

390. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

392. The leaves of Funaria are :

 
 
 
 

393. The central part of Funaria axis is :

 
 
 
 

394. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

396. The leafy fern plant represents the:

 
 
 
 

397. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

400. The disease symptom necrosis refers to :

 
 
 
 

401. Germ theory of disease was proposed by:

 
 
 
 

402. Facultative saprophyte is:

 
 
 
 

403. Pinus microsporophyll bears:

 
 
 
 

404. The sporangia of Selaginella are attached:

 
 
 
 

405. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

411. Redness of red sea is due to :

 
 
 
 

412. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

414. The spermatozoids of Cycas are :

 
 
 
 

415. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

416. The antibiotic is obtained from:

 
 
 
 

417. Iodine is obtained from :

 
 
 
 

418. Rice, pea, potato are :

 
 
 
 

419. Wine turns sour because of:

 
 
 
 

420. Roots are absent in :

 
 
 
 

421. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

423. Each chloroplast in Spirogyra bears :

 
 
 
 

424. Cap cells are found in the filament of:

 
 
 
 

425. Most common type of conjugation in Spirogyra is :

 
 
 
 

426. Cellular slime mold is:

 
 
 
 

427. 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:

 
 
 
 

428. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

430. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

437. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. What is mycorrhiza?

 
 
 
 

442. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Special feature of pollen grains of Pinus is :

 
 
 
 

447. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Majority of lichens are :

 
 
 
 

451. Small epidermal swellings due to infection are called :

 
 
 
 

452. The sporophyte of Riccia is :

 
 
 
 

453. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

455. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

457. Which of the following lichens is harmful?

 
 
 
 

458. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

463. Total parasites belong to:

 
 
 
 

464. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

466. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

468. 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:

 
 
 
 

469. Fruits are not found in :

 
 
 
 

470. Leaf spot of groundnut is caused by :

 
 
 
 

471. Indusium in Dryopteris is:

 
 
 
 

472. Nannandria are:

 
 
 
 

473. Plasmids are:

 
 
 
 

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

 
 
 
 

475. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. The orders generally have the uniform endings:

 
 
 
 

481. The antherozoids of Funaria are :

 
 
 
 

482. Cyathia is characterized by:

 
 
 
 

483. Bacteria which are spherical are called:

 
 
 
 

484. The lambda phase is a:

 
 
 
 

485. Saccharomyces is well known for:

 
 
 
 

486. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

488. Reproduction in Rhizopus is:

 
 
 
 

489. Seeds are characteristically found in:

 
 
 
 

490. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

492. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

495. Which fixes atmospheric nitrogen?

 
 
 
 

496. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

498. 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?

 
 
 
 

499. Water-net is the name of:

 
 
 
 

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

 
 
 
 

501. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

503. Yeast grows more rapidly in:

 
 
 
 

504. Gymnosperms could also be called as:

 
 
 
 

505. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. In Funaria, calyptra is derived from :

 
 
 
 

510. Which of the following statement is correct?

 
 
 
 

511. Heterotrichous habit means :

 
 
 
 

512. Citrus canker is caused by :

 
 
 
 

513. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

515. Number of capsomeres forming capsid of TMV is:

 
 
 
 

516. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. White rust of crucifers is caused by:

 
 
 
 

524. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. First animal pathogenic virus was discovered by:

 
 
 
 

528. Viruses are considered to be:

 
 
 
 

529. Rhizopus and yeast are usually:

 
 
 
 

530. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

531. Ovary is absent in:

 
 
 
 

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

 
 
 
 

533. Halophiles are the bacteria that require for growth:

 
 
 
 

534. Most of the algae are :

 
 
 
 

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

 
 
 
 

536. Virion refers to:

 
 
 
 

537. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

539. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. Late blight of potato is caused by :

 
 
 
 

543. Nitrifying bacteria play an important role by converting:

 
 
 
 

544. Lichens reproduce by :

 
 
 
 

545. Interferon is a:

 
 
 
 

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

 
 
 
 

547. Which is a gametophytic tissue?

 
 
 
 

548. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

554. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

556. Mycoplasmas are not viruses in nature because:

 
 
 
 

557. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Cycas is:

 
 
 
 

564. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

566. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

568. The term stele was given by:

 
 
 
 

569. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

573. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

575. In Cycas:

 
 
 
 

576. Generic name of mango is:

 
 
 
 

577. Citrus canker is caused by:

 
 
 
 

578. Helotism word is used for the symbiosis between :

 
 
 
 

579. Most resistant spore in bacteria is:

 
 
 
 

580. The chief characteristic of bryophyta is that :

 
 
 
 

581. Simple polyembryony is found in :

 
 
 
 

582. Green plants are classified as :

 
 
 
 

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

 
 
 
 

584. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

586. Funaria is :

 
 
 
 

587. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. The prothallus of fern represents the plant:

 
 
 
 

594. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

599. Pinus is:

 
 
 
 

600. Green plants are classified as:

 
 
 
 

601. Sporophyte of fern is:

 
 
 
 

602. The coralloid roots are :

 
 
 
 

603. The vascular bundles of Cycas stem are :

 
 
 
 

604. The disease apple scab is caused by:

 
 
 
 

605. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

607. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. In Gymnosperms endosperm is a:

 
 
 
 

611. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Which of the following is sago palm?

 
 
 
 

617. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

619. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. Gametophyte is the main plant body in :

 
 
 
 

631. Which causes red tide?

 
 
 
 

632. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

634. Germination of the seed of Pinus is :

 
 
 
 

635. Which of the following is true for Selaginella?

 
 
 
 

636. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

638. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

640.

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

 
 
 
 

642. Bacteria are placed under:

 
 
 
 

643. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

645. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Chemosynthetic bacteria are:

 
 
 
 

649. LSD is:

 
 
 
 

650. Nitrogen-fixing bacteria may be located:

 
 
 
 

651. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

654. The nucleus of bacteria is:

 
 
 
 

655. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

660.

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

 
 
 
 

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

 
 
 
 

663. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

665. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

667. Longest known virus is:

 
 
 
 

668. Viruses are commonly transmitted in plants through:

 
 
 
 

669. How is moss different from fern?

 
 
 
 

670. The middle sterile part of capsule is called:

 
 
 
 

671. E coli is a:

 
 
 
 

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

 
 
 
 

673. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

674. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

676. Which lichen is called Reindeer moss?

 
 
 
 

677. Clostridium can:

 
 
 
 

678. Enzymes are absent in:

 
 
 
 

679. Pteridophyta are also called:

 
 
 
 

680. The archegonia of Selaginella are differentiated by:

 
 
 
 

681. The chloroplast of Chlamydomonas are:

 
 
 
 

682. Metulae are found in:

 
 
 
 

683. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

685. 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?

 
 
 
 

686. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

688. 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:

 
 
 
 

689. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Which bacteria convert nitrate into nitrogen?

 
 
 
 

696. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. The leaf of Cycas shows:

 
 
 
 

702. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

704. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. The tree fern is:

 
 
 
 

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

 
 
 
 

709. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

711. Cryptogams include :

 
 
 
 

712. The Rhizopus is:

 
 
 
 

713. In Pteris, the roots are:

 
 
 
 

714. Which is not true for Escherichia coli?

 
 
 
 

715. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

717. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

719. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

720. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

722. The megasporangium of Selaginella is:

 
 
 
 

723. Bacteria are considered to be plants because they:

 
 
 
 

724. 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?

 
 
 
 

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

 
 
 
 

726. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

728. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

729. Diploxylic vascular bundles are found in:

 
 
 
 

730. Most primitive group of vascular plants are:

 
 
 
 

731. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

733. Viroids have:

 
 
 
 

734. What is the role of nitrifying bacteria?

 
 
 
 

735. Maximum diversity of life forms occurs in :

 
 
 
 

736. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Zoogametes are not found in:

 
 
 
 

741. Yeast is a source of:

 
 
 
 

742. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

751. All protozoans possess:

 
 
 
 

752. Amoeba is a member of the phylum:

 
 
 
 

753. Photosynthetic bacteria have:

 
 
 
 

754. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

756. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

763. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Select the wrong statement:

 
 
 
 

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

 
 
 
 

768. The archegonia in Selaginella develop on:

 
 
 
 

769. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Typhoid in man is caused by:

 
 
 
 

773. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

780. Choose the correct statement about Spirogyra:

 
 
 
 

781. Cocci types of bacteria are:

 
 
 
 

782. How a fern differs from a moss?

 
 
 
 

783. The sori in Dryopteris are found on:

 
 
 
 

784. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Multicellular and jacketed sex organs are found in :

 
 
 
 

788. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

795. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. The spur of Pinus roxburghii has :

 
 
 
 

799. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

801. Standard size of a herbarium sheet is:

 
 
 
 

802. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. Mycoplasma was discovered by:

 
 
 
 

806. In a bacteriophage, DNA is present in:

 
 
 
 

807. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. The microsporophylls on the cone of Cycas are :

 
 
 
 

811. The ascus of yeast contains:

 
 
 
 

812. The lichens growing on rocks are called :

 
 
 
 

813. Ovules are not found enclosed in ovary in :

 
 
 
 

814. The alga, Spirogyra are found in :

 
 
 
 

815. Mixed cropping helps :

 
 
 
 

816. Protists which are diploid reproduce sexually by:

 
 
 
 

817. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

818. Lichens are the indicator of pollution :

 
 
 
 

819. The gametophyte of fern is as:

 
 
 
 

820. In Funaria :

 
 
 
 

821. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

823. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

830. Which of the following statements is not correct?

 
 
 
 

831. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

833. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

837. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

842. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. The similarity between cyanobacteria and bacteria:

 
 
 
 

852. The most primitive vascular plants is:

 
 
 
 

853. Acellular slime mold is/are:

 
 
 
 

854. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

856. Tautonyms are illegitimate in:

 
 
 
 

857. Siphonogamy is found in:

 
 
 
 

858. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

860. Which one of the following statement is wrong?

 
 
 
 

861. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

862. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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