Quiz_Random

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

 
 
 
 

2. Oswald Tippo’s classification is:

 
 
 
 

3. Which of the following shows heterotrichous habit?

 
 
 
 

4. Water-borne bacterial diseases are:

 
 
 
 

5. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

7. The mycelium of Rhizopus is:

 
 
 
 

8. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

9. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. The leaves of Funaria are :

 
 
 
 

13. Reproduction in Rhizopus is:

 
 
 
 

14. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

16. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

18. The largest alga is:

 
 
 
 

19. Who discovered cyanophages?

 
 
 
 

20. Funaria are commonly found :

 
 
 
 

21. What are plasmids?

 
 
 
 

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

 
 
 
 

23. John Hutchinson divided dicots into two divisions:

 
 
 
 

24. Heterospory is the production of:

 
 
 
 

25. Ergot is obtained from :

 
 
 
 

26. Linnaeus is credited with introducing:

 
 
 
 

27. The two conjugating gametangia of Rhizopus are:

 
 
 
 

28. In Cycas:

 
 
 
 

29. The chloroplast in Ulothrix is :

 
 
 
 

30. The chloroplast of Chlamydomonas are:

 
 
 
 

31. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

33. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. The ascus of yeast contains:

 
 
 
 

37. What are Cyanobacteria?

 
 
 
 

38. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

40. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. The root nodules of leguminous plants contain:

 
 
 
 

48. Virus and bacteriophage are made-up of:

 
 
 
 

49. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

51. Rice, pea, potato are :

 
 
 
 

52. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Isomorphic type alternation of generation is found in:

 
 
 
 

56. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

58. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

60. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

62. Which statement is wrong in regard to bacteria?

 
 
 
 

63. Ovary is absent in:

 
 
 
 

64. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

69. The group algae possesses representatives belonging to kingdom:

 
 
 
 

70. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. Water-net is the name of:

 
 
 
 

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

 
 
 
 

76. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. The gametophyte produced by apospory is :

 
 
 
 

80. Transfusion tissue is present in the leaflet of:

 
 
 
 

81. In moss, stomata are found:

 
 
 
 

82. Photosynthetic bacteria have:

 
 
 
 

83. Liverworts are included in :

 
 
 
 

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

 
 
 
 

85. Common phycobiont in a lichen is :

 
 
 
 

86. Lichens reproduce by :

 
 
 
 

87. Fruits are not found in Cycas because:

 
 
 
 

88. The archegonia in Selaginella develop on:

 
 
 
 

89. Cell walls of Gram-positive bacteria contain:

 
 
 
 

90. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. How is moss different from fern?

 
 
 
 

95. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Most common type of conjugation in Spirogyra is :

 
 
 
 

99. The megasporangium of Selaginella is:

 
 
 
 

100. Green plants are classified as:

 
 
 
 

101. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

103. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

109. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. Which of the following are included in Tracheophyta?

 
 
 
 

113. Lichens are indicators of :

 
 
 
 

114. The archegonia of Selaginella are differentiated by:

 
 
 
 

115. What is a vector?

 
 
 
 

116. Pseudomycelium is found in:

 
 
 
 

117. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

119. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

121. Detailed study of bacteriophage was made by:

 
 
 
 

122. Pythium debaryanum is the causative agent of:

 
 
 
 

123. E coli is a:

 
 
 
 

124. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. In tracheophyta:

 
 
 
 

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

 
 
 
 

129. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

131. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

132. 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?

 
 
 
 

133. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. Diploxylic vascular bundles are found in:

 
 
 
 

137. The lambda phase is a:

 
 
 
 

138. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

140. Protists which are diploid reproduce sexually by:

 
 
 
 

141. Enteric bacteria are those bacteria that live:

 
 
 
 

142. Funaria can be differentiated from Cycas :

 
 
 
 

143. Ethylene oxide is widely used to:

 
 
 
 

144. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

150. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

152. The tallest moss in the world is :

 
 
 
 

153. Indusium in Dryopteris is:

 
 
 
 

154. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

156. The truncated cone of HIV consists of:

 
 
 
 

157. Saccharomyces is well known for:

 
 
 
 

158. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

160. Funaria is :

 
 
 
 

161. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

163. Which of the following is true for viruses?

 
 
 
 

164. The mode of nutrition of bacteria is usually:

 
 
 
 

165. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

173. The sporangiophores in Rhizopus are:

 
 
 
 

174. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

176. The source of litmus is :

 
 
 
 

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

 
 
 
 

178. Fruiting body of lichens is :

 
 
 
 

179. Acellular slime mold is/are:

 
 
 
 

180. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

185. Which among the following is a shrub?

 
 
 
 

186. Gram stain is used to:

 
 
 
 

187. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Rhizopus and yeast are usually:

 
 
 
 

191. Mucilaginous canals in Cycas are found in :

 
 
 
 

192. Antibiotics cure the disease by:

 
 
 
 

193. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

195. . Tapetum develops in:

 
 
 
 

196. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

198. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

200. In Funaria :

 
 
 
 

201. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. 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:

 
 
 
 

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

 
 
 
 

208. The similarity between cyanobacteria and bacteria:

 
 
 
 

209. The central part of Funaria axis is :

 
 
 
 

210. Sometimes the bacterial cell is enclosed in:

 
 
 
 

211. Fairy ring is the name given to:

 
 
 
 

212. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

218. Which is a redwood tree?

 
 
 
 

219. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

221. 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?

 
 
 
 

222. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

224. Each chloroplast in Spirogyra bears :

 
 
 
 

225. 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:

 
 
 
 

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

 
 
 
 

227. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

229. Yeast is a source of:

 
 
 
 

230. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. Which of the following applies to Selaginella?

 
 
 
 

234. Chemosynthetic bacteria are:

 
 
 
 

235. Photosynthetic protists belong to:

 
 
 
 

236. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

238. Saccharomyces is used in:

 
 
 
 

239. Viruses have:

 
 
 
 

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

 
 
 
 

241. 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:

 
 
 
 

242. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

244. Funaria is a Bryophyta because :

 
 
 
 

245. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

247. Seeds are characteristically found in :

 
 
 
 

248. Sporophyte of Funaria is :

 
 
 
 

249. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

251. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

257. Woody climbers are known as :

 
 
 
 

258. Desired type of Cycas can be grown by:

 
 
 
 

259. The sporophyte of Riccia is represented by :

 
 
 
 

260. LSD is:

 
 
 
 

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

 
 
 
 

262. Pollination in Pinus is :

 
 
 
 

263. Most of the algae are :

 
 
 
 

264. The DNA of E coli is:

 
 
 
 

265. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. The stele of Dryopteris is a:

 
 
 
 

270. Citrus canker is caused by:

 
 
 
 

271. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

273. Cyanophage is a virus that attacks:

 
 
 
 

274. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

276. Vascular tissue is found in :

 
 
 
 

277. Photoautotrophic bacteria have:

 
 
 
 

278. Male gametes in Dryopteris are:

 
 
 
 

279. Rhizopus belongs to:

 
 
 
 

280. Proembryo in Pinus is :

 
 
 
 

281. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

283. The genetic material of poxvirus is:

 
 
 
 

284. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

286. Meiosis in Ulothrix takes place:

 
 
 
 

287. Etiology includes the study of :

 
 
 
 

288. Botulism is a:

 
 
 
 

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

 
 
 
 

290. Lichens form the first community in

 
 
 
 

291. Cyathia is characterized by:

 
 
 
 

292. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

293. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

295. Spermatophyta are characterized by producing:

 
 
 
 

296. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

298. Facultative saprophyte is:

 
 
 
 

299. Sporophyte of fern is:

 
 
 
 

300. Cycas revoluta is widely grown as :

 
 
 
 

301. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

303. Most primitive kind of flower is represented by:

 
 
 
 

304. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

306. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

308. Choose the correct statement about Spirogyra:

 
 
 
 

309. Maximum diversity of life forms occurs in :

 
 
 
 

310. Longest known virus is:

 
 
 
 

311. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

313.

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

 
 
 
 

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

 
 
 
 

316. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

322. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

324. 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:

 
 
 
 

325. In moss, conducting tissue is made up of

 
 
 
 

326. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

328. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

334. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

336. Penicillin was discovered by:

 
 
 
 

337. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

339. Cleavage polyembryony is found in :

 
 
 
 

340. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. Total parasites belong to:

 
 
 
 

345. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Green plants are classified as :

 
 
 
 

351. Leaf spot of groundnut is caused by :

 
 
 
 

352. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

354. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

356. The nucleus of bacteria is:

 
 
 
 

357. Who named prion?

 
 
 
 

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

 
 
 
 

359. Metulae are found in:

 
 
 
 

360. Centric discoid form of diatom is:

 
 
 
 

361. The sori in Dryopteris are found on:

 
 
 
 

362. Ovules are not found enclosed in ovary in :

 
 
 
 

363. Bacteria are considered to be plants because they:

 
 
 
 

364. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

366. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

369. Halophiles are the bacteria that require for growth:

 
 
 
 

370. Which is a fungicide?

 
 
 
 

371. An Hfr bacterium is one that contains:

 
 
 
 

372. What is streptomycin?

 
 
 
 

373. Roots are absent in :

 
 
 
 

374. Psilotum is:

 
 
 
 

375. Number of capsomeres forming capsid of TMV is:

 
 
 
 

376. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

378. Little leaf disease of Brinjal is caused by:

 
 
 
 

379. Black rust of wheat is caused by:

 
 
 
 

380. Ovary is absent in :

 
 
 
 

381. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. Banana bunchy top is caused by :

 
 
 
 

391. Which is a gametophytic tissue?

 
 
 
 

392. All archaebacteria lack:

 
 
 
 

393. NBG of Lucknow is now named as:

 
 
 
 

394. The fungi that grow on wood are called:

 
 
 
 

395. Red rot of sugarcane is caused by:

 
 
 
 

396. Generic name of mango is:

 
 
 
 

397. The upper region of moss capsule is :

 
 
 
 

398. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. The order generally ends with:

 
 
 
 

403. Azolla and Salvinia both are:

 
 
 
 

404. Smallpox is caused by:

 
 
 
 

405. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

407. The term stele was given by:

 
 
 
 

408. Chemosynthetic bacteria are:

 
 
 
 

409. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

411. The photosynthetic protists are:

 
 
 
 

412. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

414. Standard size of a herbarium sheet is:

 
 
 
 

415. Who among the following discovered virus?

 
 
 
 

416. Lichen show :

 
 
 
 

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

 
 
 
 

418. Heterocysts are found in :

 
 
 
 

419. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

421. The megaspore of Selaginella on germination produces:

 
 
 
 

422. Bacteriophage consists of:

 
 
 
 

423. The sporophyte of Riccia is :

 
 
 
 

424. 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?

 
 
 
 

425. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Cycas plant in appearance resembles :

 
 
 
 

433. Wine turns sour because of:

 
 
 
 

434. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. Smut of maize is caused by :

 
 
 
 

439. The smallest bacterium is:

 
 
 
 

440. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

445. Pteridophyta are also called:

 
 
 
 

446. The roots of Cycas are :

 
 
 
 

447. To which country Antony van Leeuwenhoek belong?

 
 
 
 

448. Special feature of pollen grains of Pinus is :

 
 
 
 

449. Which of the following is a parasitic algae?

 
 
 
 

450. Aflatoxin is produced as a product in :

 
 
 
 

451. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Gymnosperms could also be called as:

 
 
 
 

455. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

457. The smallest unit of classification is:

 
 
 
 

458. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

459. Pythium debaryanum is the causative agent of:

 
 
 
 

460. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

461. Virion refers to:

 
 
 
 

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

 
 
 
 

463. The most primitive vascular plants is:

 
 
 
 

464. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

466. The fern plant is:

 
 
 
 

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

 
 
 
 

468. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

470. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

472. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

474. In angiosperms double fertilization represents:

 
 
 
 

475. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

480. Select the wrong statement:

 
 
 
 

481. Quarantine regulations are concerned with:

 
 
 
 

482. Fern prothallus produces:

 
 
 
 

483. In a diplontic life cycle:

 
 
 
 

484. Plasmids are:

 
 
 
 

485. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. The coralloid roots are :

 
 
 
 

490. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

492. Ectocarpus produces:

 
 
 
 

493. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

495. Pasteurization of milk involves heating for:

 
 
 
 

496. Saccharomyces ludwigii ascus produces:

 
 
 
 

497. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

499. Male gametophyte of Selaginella is found:

 
 
 
 

500. Acetobacter is useful in:

 
 
 
 

501. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

503. Iodine is obtained from :

 
 
 
 

504. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

508. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

510. Bacteria differ from viruses in being sensitive to:

 
 
 
 

511. Fern prothallus is:

 
 
 
 

512. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

518. The chief characteristic of bryophyta is that :

 
 
 
 

519. The sporangium of fern contains nearly:

 
 
 
 

520. In moss, peristomial teeth are:

 
 
 
 

521. A gill of Agaricus:

 
 
 
 

522. Oswald Tippo’s classification was based on :

 
 
 
 

523. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

525. Late blight of potato is caused by :

 
 
 
 

526. Which have the largest antherozoid?

 
 
 
 

527. Multicellular and jacketed sex organs are found in :

 
 
 
 

528. Black rust of wheat is caused by:

 
 
 
 

529. The leafy fern plant represents the:

 
 
 
 

530. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

532. Spermatophyta are characterized by producing:

 
 
 
 

533. Lichens are the indicator of pollution :

 
 
 
 

534. In Selaginella, the microsporangia are:

 
 
 
 

535. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

537. Bacteria were first discovered by:

 
 
 
 

538. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

543. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

548. Discovery of penicillin was based on:

 
 
 
 

549. Viroids have:

 
 
 
 

550. Antibiotic has been extracted from :

 
 
 
 

551. Lichens reproduce by :

 
 
 
 

552.

 

553. Bryophyta have a special character from other plants:

 
 
 
 

554. Which of the following have a prokaryotic cell?

 
 
 
 

555. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Botulinum toxin effects:

 
 
 
 

563. Which is a tautonym?

 
 
 
 

564. Synzoospore is produced in:

 
 
 
 

565. Which of the following statement is correct?

 
 
 
 

566. Bacteria are placed under:

 
 
 
 

567. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

570. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

572. Iodine is obtained from:

 
 
 
 

573. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

575. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

577. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

579. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

581. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

584. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

586. In Cycas which structure is equivalent to stamen?

 
 
 
 

587. Reproduction in Cycas takes place by :

 
 
 
 

588. Sexual reproduction in Rhizopus is by:

 
 
 
 

589. Why is Cycas called a living fossil?

 
 
 
 

590. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

592. All protozoans possess:

 
 
 
 

593. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. In Cycas microsporangia are borne on:

 
 
 
 

600. Who discovered heterothallism in fungi?

 
 
 
 

601. Which of the following are absent in Mycoplasma?

 
 
 
 

602. The ferns are usually found:

 
 
 
 

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

 
 
 
 

604. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

606. Which is absent from the xylem of Cycas?

 
 
 
 

607. Mycoplasma was discovered by:

 
 
 
 

608. The development of sporangium in Selaginella is:

 
 
 
 

609. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

611. Pinus microsporophyll bears:

 
 
 
 

612. First animal pathogenic virus was discovered by:

 
 
 
 

613. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

615. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Sleeping sickness disease in man is caused by:

 
 
 
 

620. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

622. Pinus is:

 
 
 
 

623. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Lichens show :

 
 
 
 

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

 
 
 
 

630. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. An alga which is rich in proteins:

 
 
 
 

636. Cycas is similar to a mustard plant :

 
 
 
 

637. Where does meiosis occur in yeast?

 
 
 
 

638.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

644. The leaves of Funaria are :

 
 
 
 

645. Fertility of the soil is increased by:

 
 
 
 

646. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

648. Water bloom is generally caused by :

 
 
 
 

649. Nannandria are:

 
 
 
 

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

 
 
 
 

651. Spirogyra represents the :

 
 
 
 

652. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

654. Leprosy is caused by:

 
 
 
 

655. TMV was isolated in crystalline form by:

 
 
 
 

656. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

657. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. What is special feature of fern archegonia?

 
 
 
 

669. Select the correct statement: (NEET 2016)

 
 
 
 

670. Club moss is the common name of :

 
 
 
 

671. The teeth of peristome of Funaria are :

 
 
 
 

672. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

674. Fern phloem lacks:

 
 
 
 

675. Embryophyta includes :

 
 
 
 

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

 
 
 
 

677. Fruits are not found in:

 
 
 
 

678. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. Yeast grows more rapidly in:

 
 
 
 

682. Mycoplasma is different from bacteria due to:

 
 
 
 

683. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

685. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

687. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. Among the algae kelps are :

 
 
 
 

691. The spermatozoids of Cycas are :

 
 
 
 

692. The Rhizopus gametes are formed in:

 
 
 
 

693. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

695. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Mostly type of zygospore in Ulothrix is:

 
 
 
 

699. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

701. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

702. The Rhizopus is:

 
 
 
 

703. Bacteria are found everywhere, except:

 
 
 
 

704. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Some bacteria cannot be killed easily because of:

 
 
 
 

713. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

715. Club moss and Peat moss belong to:

 
 
 
 

716. Triple antigen injection or vaccine are for:

 
 
 
 

717. The tree fern is:

 
 
 
 

718. Heterosporous pteridophytes always form:

 
 
 
 

719. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

721. The gametophyte of fern is as:

 
 
 
 

722. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

726. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

728. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

732. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

738. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

740. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

742. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

743. The middle sterile part of capsule is called:

 
 
 
 

744. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

746. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

748. Selaginella differs from Moss in having:

 
 
 
 

749. The zygospore in Rhizopus on germination forms:

 
 
 
 

750. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

752. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Which of the following is sago palm?

 
 
 
 

762. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

765. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

772. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

777. Fruits are not found in :

 
 
 
 

778. Pasteurized milk is:

 
 
 
 

779. Kuru, a human disease is caused by:

 
 
 
 

780. Lichens are ecologically important because :

 
 
 
 

781. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

785. The most important property of yeast is:

 
 
 
 

786. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. The chromosomal number in:

 
 
 
 

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

 
 
 
 

792. Small epidermal swellings due to infection are called :

 
 
 
 

793. Reserve food in Euglena is:

 
 
 
 

794. Viruses are commonly transmitted in plants through:

 
 
 
 

795. Cellular slime mold is:

 
 
 
 

796. Clostridium can:

 
 
 
 

797. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. Cycas is :

 
 
 
 

802. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

804. White rust of crucifers is caused by:

 
 
 
 

805. Circular DNA is seen in:

 
 
 
 

806. In Pteris, the roots are:

 
 
 
 

807. Mycoplasma are:

 
 
 
 

808. Embryophyta includes:

 
 
 
 

809. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

814. Yeast belongs to class:

 
 
 
 

815. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

817. All algae have:

 
 
 
 

818. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

820. Ulothrix produces :

 
 
 
 

821. Most primitive embryophytes are placed in:

 
 
 
 

822. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

824. Bivalved siliceous shell or frustule occur in:

 
 
 
 

825. Azolla growing in paddy fields helps in:

 
 
 
 

826. Methanogens belong to:

 
 
 
 

827. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

833. Infective part of virus was discovered by:

 
 
 
 

834. Citrus canker is caused by :

 
 
 
 

835. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

836. Parmelia belongs to :

 
 
 
 

837. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

839. The prothallus of fern represents the plant:

 
 
 
 

840. The role of meiosis is for:

 
 
 
 

841. Pneumonia is caused by:

 
 
 
 

842. Some biologists have used the term Mycetozoa for:

 
 
 
 

843. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

844. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

853. The zoospores of Ulothrix are :

 
 
 
 

854.

855. Seeds are characteristically found in:

 
 
 
 

856. Bacteriophages have been used as:

 
 
 
 

857. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Nitrifying bacteria play an important role by converting: