Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

5. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

7.

8. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

10. Sleeping sickness disease in man is caused by:

 
 
 
 

11. Pinus is:

 
 
 
 

12. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

13. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

15. Mixed cropping helps :

 
 
 
 

16. Which causes red tide?

 
 
 
 

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

 
 
 
 

18. Gametophyte is the main plant body in :

 
 
 
 

19. Rhizopus and yeast are usually:

 
 
 
 

20. Lichens are indicators of :

 
 
 
 

21. In Pteris, the roots are:

 
 
 
 

22. Cap cells are found in the filament of:

 
 
 
 

23. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

24. The young leaves of Cycas have :

 
 
 
 

25. Select the correct statement: (NEET 2016)

 
 
 
 

26. An Hfr bacterium is one that contains:

 
 
 
 

27. 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:

 
 
 
 

28. Most primitive embryophytes are placed in:

 
 
 
 

29. Spermatophyta are characterized by producing:

 
 
 
 

30. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

35. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

36. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Club moss is the common name of :

 
 
 
 

41. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

45. In Pteris, the archegonia are present:

 
 
 
 

46. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

48. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

50. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

52. The Rhizopus is:

 
 
 
 

53. The similarity between cyanobacteria and bacteria:

 
 
 
 

54. Standard size of a herbarium sheet is:

 
 
 
 

55. Some biologists have used the term Mycetozoa for:

 
 
 
 

56. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Cycas is:

 
 
 
 

60. White rust of crucifers is caused by:

 
 
 
 

61. Red rot of sugarcane is caused by :

 
 
 
 

62. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. In moss, sporogenous tissue arises from:

 
 
 
 

68. Which bacteria convert nitrate into nitrogen?

 
 
 
 

69. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

71. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

73. Woody climbers are known as :

 
 
 
 

74. Sexual reproduction in Rhizopus is by:

 
 
 
 

75. The fungi used as food are:

 
 
 
 

76. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Funaria can be differentiated from Cycas :

 
 
 
 

88. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

89. Chemosynthetic bacteria are:

 
 
 
 

90. 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?

 
 
 
 

91. Enteric bacteria are those bacteria that live:

 
 
 
 

92. Sporophyte of Funaria is :

 
 
 
 

93. Lichens form the first community in

 
 
 
 

94. Pinus gerardiana is :

 
 
 
 

95. Viroids have:

 
 
 
 

96. Protistan algae obtain their food as:

 
 
 
 

97. The archegonia in Selaginella develop on:

 
 
 
 

98. 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?

 
 
 
 

99. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Winged pollen grains are found in :

 
 
 
 

103. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

110. How is moss different from fern?

 
 
 
 

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

 
 
 
 

112. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

119. In Cycas the fertilization is:

 
 
 
 

120. Liverworts are included in :

 
 
 
 

121. An alga which is rich in proteins:

 
 
 
 

122. Protists which are diploid reproduce sexually by:

 
 
 
 

123. Pteridophytes are also known as :

 
 
 
 

124. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

126. In Funaria :

 
 
 
 

127. Fairy ring is the name given to:

 
 
 
 

128. The prothallus of fern is:

 
 
 
 

129. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

131. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. In Cycas:

 
 
 
 

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

 
 
 
 

136. Which of the following have algal zone?

 
 
 
 

137. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

142. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

143. Acellular slime mold is/are:

 
 
 
 

144. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

146. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

150. Heterosporous pteridophytes always form:

 
 
 
 

151. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Fern prothallus is:

 
 
 
 

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

 
 
 
 

157. Anoxygenic photosynthesis occurs in:

 
 
 
 

158. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. How a fern differs from a moss?

 
 
 
 

163. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

168. 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:

 
 
 
 

169. Which of the following is a heterosporous pteridophyte?

 
 
 
 

170. Azolla and Salvinia both are:

 
 
 
 

171.

 

172. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

174. Multicellular and jacketed sex organs are found in :

 
 
 
 

175. Which is the correct statement about Selaginella?

 
 
 
 

176. To which class Riccia belongs :

 
 
 
 

177. Fertility of the soil is increased by:

 
 
 
 

178. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

180. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. Most of the algae are :

 
 
 
 

188. Viruses are considered to be:

 
 
 
 

189. Lichens reproduce by :

 
 
 
 

190. Mostly type of zygospore in Ulothrix is:

 
 
 
 

191. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

193. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. Clostridium can:

 
 
 
 

207. Pythium debaryanum is the causative agent of:

 
 
 
 

208. The rhizoids of Funaria are :

 
 
 
 

209. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

211. Yeast grows more rapidly in:

 
 
 
 

212. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

217. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

219. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

221. In moss, calyptra is formed from:

 
 
 
 

222. Asexual reproductive body of Volvox is called:

 
 
 
 

223. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

225. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

227. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Vascular tissue is found in :

 
 
 
 

233. Who discovered heterothallism in fungi?

 
 
 
 

234. Funaria are commonly found :

 
 
 
 

235. Cleavage polyembryony is found in :

 
 
 
 

236. The fern plant is:

 
 
 
 

237. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Streptomycin is obtained from:

 
 
 
 

243. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. Which is not found in bacteria?

 
 
 
 

248. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

249. 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?

 
 
 
 

250. Plasmids are:

 
 
 
 

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

 
 
 
 

252. E coli is a:

 
 
 
 

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

 
 
 
 

254. Cell walls of Gram-positive bacteria contain:

 
 
 
 

255. Late blight of potato is caused by:

 
 
 
 

256. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

264. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. Red rot of sugarcane is caused by:

 
 
 
 

268. The ferns are usually found:

 
 
 
 

269. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

274.

275. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. Water-borne bacterial diseases are:

 
 
 
 

279. Ovary is absent in :

 
 
 
 

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

 
 
 
 

281. Pinus microsporophyll bears:

 
 
 
 

282. In Gymnosperms endosperm is a:

 
 
 
 

283. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. Ulothrix produces :

 
 
 
 

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

 
 
 
 

288. Some diseases caused by bacteria are:

 
 
 
 

289. Saccharomyces is used in:

 
 
 
 

290. Which group of algae have an incipient nucleus?

 
 
 
 

291. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

293. Bacteria are considered to be plants because they:

 
 
 
 

294. Sometimes the bacterial cell is enclosed in:

 
 
 
 

295. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

298. In binomial system most of the words are:

 
 
 
 

299. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

301. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304. The coralloid roots are :

 
 
 
 

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

 
 
 
 

306. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

308. In moss, conducting tissue is made up of

 
 
 
 

309. Majority of lichens are :

 
 
 
 

310. Antibiotics cure the disease by:

 
 
 
 

311. Small epidermal swellings due to infection are called :

 
 
 
 

312. The term stele was given by:

 
 
 
 

313. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

315. The zoospores of Ulothrix are :

 
 
 
 

316. The vascular bundles of Cycas stem are :

 
 
 
 

317. Mycoplasma contains:

 
 
 
 

318. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Penicillin was discovered by:

 
 
 
 

322. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Heterospory is the production of:

 
 
 
 

330. One of the distinctive feature of Spirogyra is :

 
 
 
 

331. 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:

 
 
 
 

332. The seedless plants which possess vascular tissues are:

 
 
 
 

333. The source of litmus is :

 
 
 
 

334. The role of meiosis is for:

 
 
 
 

335. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Special feature of pollen grains of Pinus is :

 
 
 
 

339. The sporophyte of Riccia is represented by :

 
 
 
 

340. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

342. John Hutchinson divided dicots into two divisions:

 
 
 
 

343. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

345. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

350. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. First animal pathogenic virus was discovered by:

 
 
 
 

354. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

356. Selaginella differs from Moss in having:

 
 
 
 

357. Which is a tautonym?

 
 
 
 

358. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

360. Bacteria which are spherical are called:

 
 
 
 

361. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. The zygospore in Rhizopus on germination forms:

 
 
 
 

367. Longest known virus is:

 
 
 
 

368. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Amoeba is a member of the phylum:

 
 
 
 

375. Iodine is obtained from:

 
 
 
 

376. Some bacteria cannot be killed easily because of:

 
 
 
 

377. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

379. In a bacteriophage, DNA is present in:

 
 
 
 

380. The group algae possesses representatives belonging to kingdom:

 
 
 
 

381. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

383. Ectocarpus produces:

 
 
 
 

384. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

386. Winged seeds are found in :

 
 
 
 

387. Viruses are commonly transmitted in plants through:

 
 
 
 

388. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

389. Genetic material of TMV is:

 
 
 
 

390. In Cycas microsporangia are borne on:

 
 
 
 

391. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Downy mildew disease is caused by :

 
 
 
 

395. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

400. Spores of which plants have chloroplast:

 
 
 
 

401. Oswald Tippo’s classification is:

 
 
 
 

402. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

406. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

408. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. Select the wrong statement:

 
 
 
 

412. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

414. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

416. Quarantine regulations are concerned with:

 
 
 
 

417. All algae have:

 
 
 
 

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

 
 
 
 

419. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

421. Which statement is wrong in regard to bacteria?

 
 
 
 

422. Late blight of potato is caused by :

 
 
 
 

423. Gymnosperms could also be called as:

 
 
 
 

424. Pasteurization of milk involves heating for:

 
 
 
 

425. The smallest unit of classification is:

 
 
 
 

426. Diphtheria is caused by:

 
 
 
 

427. Aflatoxin is produced by:

 
 
 
 

428. Penicillin is obtained from:

 
 
 
 

429. What is streptomycin?

 
 
 
 

430. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. 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?

 
 
 
 

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

 
 
 
 

437. In Selaginella, the microsporangia are:

 
 
 
 

438. Which class of Protozoa includes all parasitic forms?

 
 
 
 

439. Which of the following statements is not correct?

 
 
 
 

440. Transfusion tissue is present in the leaflet of:

 
 
 
 

441. Generic name of mango is:

 
 
 
 

442. The genetic material of poxvirus is:

 
 
 
 

443. 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:

 
 
 
 

444. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

454. Protozoans are considered animals because these are:

 
 
 
 

455. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. What is special feature of fern archegonia?

 
 
 
 

462. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

464. LSD is:

 
 
 
 

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

 
 
 
 

466. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

468. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

471. Most of the lichens are composed of :

 
 
 
 

472. Helotism word is used for the symbiosis between :

 
 
 
 

473. The truncated cone of HIV consists of:

 
 
 
 

474. The sexual reproductive organs in Rhizopus are:

 
 
 
 

475. In moss, peristomial teeth are:

 
 
 
 

476. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

478. Meristele of fern is:

 
 
 
 

479. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

481. Gram stain is used to:

 
 
 
 

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

 
 
 
 

483. Smallpox is caused by:

 
 
 
 

484. Milk is converted to curd by:

 
 
 
 

485. Saccharomyces is well known for:

 
 
 
 

486. Fruits are not found in Cycas because:

 
 
 
 

487. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

488. The lambda phase is a:

 
 
 
 

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

 
 
 
 

490. All archaebacteria lack:

 
 
 
 

491. What is absent in Deuteromycetes?

 
 
 
 

492. Cyanophage is a virus that attacks:

 
 
 
 

493. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. The antibiotic is obtained from:

 
 
 
 

497. Which of the following is a monocot?

 
 
 
 

498. TMV was isolated in crystalline form by:

 
 
 
 

499. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

501. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. The development of sporangium in Selaginella is:

 
 
 
 

505. Synzoospore is produced in:

 
 
 
 

506. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

508. Water-net is the name of:

 
 
 
 

509. Meiosis in Ulothrix takes place:

 
 
 
 

510. Metulae are found in:

 
 
 
 

511. Roots are absent in :

 
 
 
 

512. Lichens show :

 
 
 
 

513. Who among the following discovered virus?

 
 
 
 

514. Viruses have:

 
 
 
 

515. Which of the following shows heterotrichous habit?

 
 
 
 

516. The sporophyte of Riccia is :

 
 
 
 

517. All protozoans possess:

 
 
 
 

518. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

521. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

523. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Which of the following are absent in Mycoplasma?

 
 
 
 

532. Yeast belongs to class:

 
 
 
 

533. Lichens are the indicator of pollution :

 
 
 
 

534. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

536. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

539. Which is not true for Escherichia coli?

 
 
 
 

540. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Lichen show :

 
 
 
 

544.

545. Which is a redwood tree?

 
 
 
 

546. Chief constituents of bordeaux mixture are :

 
 
 
 

547. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

549. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. In Funaria, calyptra is derived from :

 
 
 
 

553. The fungi are mostly:

 
 
 
 

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

 
 
 
 

555. Virus and bacteriophage are made-up of:

 
 
 
 

556. Each chloroplast in Spirogyra bears :

 
 
 
 

557. Nitrogen-fixing bacteria may be located:

 
 
 
 

558. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

560. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Heterospory and ligulate leaves are a feature of:

 
 
 
 

564. Most primitive embryophytes are placed in :

 
 
 
 

565. Mycoplasma are sensitive to:

 
 
 
 

566. Club moss and Peat moss belong to:

 
 
 
 

567. Citrus canker is caused by :

 
 
 
 

568. The leaf of Cycas shows:

 
 
 
 

569. Nitrifying bacteria play an important role by converting:

 
 
 
 

570. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

571. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

576. Triple antigen injection or vaccine are for:

 
 
 
 

577. Desired type of Cycas can be grown by:

 
 
 
 

578. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

579. Which fixes atmospheric nitrogen?

 
 
 
 

580. Pseudomycelium is found in:

 
 
 
 

581. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

583. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. Bentham and Hooker placed gymnosperms:

 
 
 
 

588. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

590. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

596. In dinoflagellates, the two flagella are:

 
 
 
 

597. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

599. Rhizophore of Selaginella is:

 
 
 
 

600. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

602. Pollination drop is:

 
 
 
 

603. Infective part of virus was discovered by:

 
 
 
 

604. The most primitive vascular plants is:

 
 
 
 

605. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

607. Heterotrichous habit means :

 
 
 
 

608. Methanogens belong to:

 
 
 
 

609. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

611. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

612. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

615. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

620. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

621. Pollination in Cycas takes place by :

 
 
 
 

622. The spermatozoids of Cycas are :

 
 
 
 

623. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

625. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

626. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

628. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

630. The photosynthetic protists are:

 
 
 
 

631. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

636. What is the role of nitrifying bacteria?

 
 
 
 

637. Botulinum toxin effects:

 
 
 
 

638. Black rust of wheat is caused by:

 
 
 
 

639. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

641. Ovules are not found enclosed in ovary in :

 
 
 
 

642. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

644. Pteridophyta are also called:

 
 
 
 

645. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

647. In tracheophyta:

 
 
 
 

648. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

650. In moss, stomata are found:

 
 
 
 

651. Yeast is a source of:

 
 
 
 

652. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

654. Number of capsomeres forming capsid of TMV is:

 
 
 
 

655. Placenta in fern is:

 
 
 
 

656. Spirogyra differs from moss protonema in having :

 
 
 
 

657. Saccharomyces ludwigii ascus produces:

 
 
 
 

658. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

660. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

662. Which condition is found in Cycas?

 
 
 
 

663. The male gametes of Pinus are :

 
 
 
 

664. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

666. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

668. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. Sporophyte of fern is:

 
 
 
 

672. Green plants are classified as :

 
 
 
 

673. Ergot is obtained from :

 
 
 
 

674. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

678. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. The flagella of Chlamydomonas are:

 
 
 
 

685. Broad spectrum antibiotic is, which:

 
 
 
 

686. The smallest bacterium is:

 
 
 
 

687. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Fruits are not found in :

 
 
 
 

694. What is mycorrhiza?

 
 
 
 

695. . Tapetum develops in:

 
 
 
 

696. Which of the following does not contain chlorophyll?

 
 
 
 

697. Kuru, a human disease is caused by:

 
 
 
 

698. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. The fungi are usually:

 
 
 
 

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

 
 
 
 

703. What is a vector?

 
 
 
 

704. The chief characteristic of class Ascomycetes is:

 
 
 
 

705. The root nodules of leguminous plants contain:

 
 
 
 

706. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

708. Which is a fungicide?

 
 
 
 

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

 
 
 
 

710. Which lichen is called Reindeer moss?

 
 
 
 

711. Streptomyces falls under:

 
 
 
 

712. Fern prothallus produces:

 
 
 
 

713. Siphonogamy is found in:

 
 
 
 

714. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

715. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. The leaves of Funaria are :

 
 
 
 

719. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Who discovered streptomycin?

 
 
 
 

723. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

724. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. Discovery of penicillin was based on:

 
 
 
 

728. The roots of Cycas are :

 
 
 
 

729. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

730. Interferon is a:

 
 
 
 

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

 
 
 
 

732. The archegonia of Selaginella are differentiated by:

 
 
 
 

733. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. The gametophyte of fern bears:

 
 
 
 

743. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Iodine is obtained from :

 
 
 
 

747. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

749. Pollination in Pinus is :

 
 
 
 

750. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

752. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

754. Most resistant spore in bacteria is:

 
 
 
 

755. Cryptogams include :

 
 
 
 

756. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

758. Virion refers to:

 
 
 
 

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

 
 
 
 

760. Botulism is a:

 
 
 
 

761. Bacteria differ from viruses in being sensitive to:

 
 
 
 

762. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

767. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

769. Bacteriophages have been used as:

 
 
 
 

770. Nannandria are:

 
 
 
 

771. Citrus canker is caused by:

 
 
 
 

772. The DNA of E coli is:

 
 
 
 

773. Bryophyta have been placed in cryptogams because:

 
 
 
 

774. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

777. Diploxylic vascular bundles are found in:

 
 
 
 

778. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

781. The mode of nutrition of bacteria is usually:

 
 
 
 

782. Bivalved siliceous shell or frustule occur in:

 
 
 
 

783. In angiosperms double fertilization represents:

 
 
 
 

784. Absorptive nutrition is:

 
 
 
 

785. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

788. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

790. The mycelium of Rhizopus is:

 
 
 
 

791. Coenogamete is found in:

 
 
 
 

792. Facultative parasite is:

 
 
 
 

793. Which one of the following is a monocot?

 
 
 
 

794. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

796. The megasporangium of Selaginella is:

 
 
 
 

797. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. Smut of maize is caused by :

 
 
 
 

801. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

806. Centric discoid form of diatom is:

 
 
 
 

807. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

809. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

811. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

813. Pasteur is famous for his:

 
 
 
 

814. Chemosynthetic bacteria are:

 
 
 
 

815. Most common type of conjugation in Spirogyra is :

 
 
 
 

816. Which is an edible fungus?

 
 
 
 

817. Red rot of sugarcane is caused by :

 
 
 
 

818. Endemic plants are characterised by their:

 
 
 
 

819. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

821. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

826. Aflatoxin is produced as a product in :

 
 
 
 

827. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. Fern plants are:

 
 
 
 

831. The prothallus of fern represents the plant:

 
 
 
 

832. Which of the following applies to Selaginella?

 
 
 
 

833. Germination of the seed of Pinus is :

 
 
 
 

834. Select the wrong statement:

 
 
 
 

835. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

837. 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:

 
 
 
 

838. Pneumonia is caused by:

 
 
 
 

839. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

841. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. The spur of Pinus roxburghii has :

 
 
 
 

849. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

851. Agar-agar is obtained from:

 
 
 
 

852. Who named prion?

 
 
 
 

853. Most primitive kind of flower is represented by:

 
 
 
 

854. Circular DNA is seen in:

 
 
 
 

855. Mycoplasma are:

 
 
 
 

856. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

861. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

863. Ginkgo biloba is a:

 
 
 
 

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