Quiz_Random

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

 
 
 
 

2. Antibiotics cure the disease by:

 
 
 
 

3. Fruits are not found in Cycas because:

 
 
 
 

4. The photosynthetic protists are:

 
 
 
 

5. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

11. The role of meiosis is for:

 
 
 
 

12. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Aflatoxin is produced by:

 
 
 
 

16.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

22. Genetic material of TMV is:

 
 
 
 

23. The sexual reproductive organs in Rhizopus are:

 
 
 
 

24. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

26. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

28. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

30. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33.

 

34. What is special feature of fern archegonia?

 
 
 
 

35. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. In Cycas microsporangia are borne on:

 
 
 
 

39. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

40. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Ovary is absent in:

 
 
 
 

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

 
 
 
 

45. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

47. Pythium debaryanum is the causative agent of:

 
 
 
 

48. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

50. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

52. Majority of lichens are :

 
 
 
 

53. In moss, sporogenous tissue arises from:

 
 
 
 

54. In Cycas:

 
 
 
 

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

 
 
 
 

56. Black rust of wheat is caused by:

 
 
 
 

57. Vascular tissue is found in :

 
 
 
 

58. Most resistant spore in bacteria is:

 
 
 
 

59. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

61. Typhoid in man is caused by:

 
 
 
 

62. TMV was isolated in crystalline form by:

 
 
 
 

63. Coenogamete is found in:

 
 
 
 

64. Who discovered streptomycin?

 
 
 
 

65. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. Smallpox is caused by:

 
 
 
 

69. Funaria is :

 
 
 
 

70. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

72. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

74. The lambda phase is a:

 
 
 
 

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

 
 
 
 

76. Who named prion?

 
 
 
 

77. 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:

 
 
 
 

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

 
 
 
 

79. The genetic material of poxvirus is:

 
 
 
 

80. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. The chromosomal number in:

 
 
 
 

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

 
 
 
 

86. Pinus is:

 
 
 
 

87. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

89. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

104. Pollination in Cycas takes place by :

 
 
 
 

105. The rhizoids of Funaria are :

 
 
 
 

106. Rice, pea, potato are :

 
 
 
 

107. What are Cyanobacteria?

 
 
 
 

108. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Mycoplasma are sensitive to:

 
 
 
 

112. Protists which are diploid reproduce sexually by:

 
 
 
 

113. Who among the following discovered virus?

 
 
 
 

114. Cycas is different from mango in :

 
 
 
 

115. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Cleavage polyembryony is found in :

 
 
 
 

122. Embryophyta includes :

 
 
 
 

123. Meiosis in Ulothrix takes place:

 
 
 
 

124. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

126. The leafy fern plant represents the:

 
 
 
 

127. Lichens show :

 
 
 
 

128. Placenta in fern is:

 
 
 
 

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

 
 
 
 

130. Red rot of sugarcane is caused by:

 
 
 
 

131. The disease apple scab is caused by:

 
 
 
 

132. The orders generally have the uniform endings:

 
 
 
 

133. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

134. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

136. Pseudomycelium is found in:

 
 
 
 

137. In moss, calyptra is formed from:

 
 
 
 

138. Which of the following are included in Tracheophyta?

 
 
 
 

139. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

142. The order generally ends with:

 
 
 
 

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

 
 
 
 

144. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

147. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

149. In Pteris, the roots are:

 
 
 
 

150. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

152. Among the algae kelps are :

 
 
 
 

153. Which one of the following statement is wrong?

 
 
 
 

154. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

157. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

158. The gametophyte of moss has distinct phases :

 
 
 
 

159. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

161. Roots are absent in :

 
 
 
 

162. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Select the wrong statement:

 
 
 
 

166. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

167. Chemosynthetic bacteria are:

 
 
 
 

168. Ergot is obtained from :

 
 
 
 

169. Which is the correct statement about Selaginella?

 
 
 
 

170. 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:

 
 
 
 

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

 
 
 
 

172. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

174. Proembryo in Pinus is :

 
 
 
 

175. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

176. Tautonyms are illegitimate in:

 
 
 
 

177. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. All protozoans possess:

 
 
 
 

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

 
 
 
 

183. Sleeping sickness disease in man is caused by:

 
 
 
 

184. Most of the algae are :

 
 
 
 

185. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

187. The plants of Funaria grow :

 
 
 
 

188. Which of the following is true for viruses?

 
 
 
 

189. Which have the largest antherozoid?

 
 
 
 

190. The fungi are usually:

 
 
 
 

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

 
 
 
 

192. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

194. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

199. The tree fern is:

 
 
 
 

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

 
 
 
 

201. Most appropriate word for protozoans is:

 
 
 
 

202. 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:

 
 
 
 

203. Fern plants are:

 
 
 
 

204. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

206. Ethylene oxide is widely used to:

 
 
 
 

207. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

209. Mycoplasmas are not viruses in nature because:

 
 
 
 

210. The sporophyte of Riccia is represented by :

 
 
 
 

211. Cycas is:

 
 
 
 

212. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Bacteriophage consists of:

 
 
 
 

216. Protozoans are considered animals because these are:

 
 
 
 

217. Vegetative reproduction in Cycas is by means of :

 
 
 
 

218. The sporangium of fern contains nearly:

 
 
 
 

219. Most primitive kind of flower is represented by:

 
 
 
 

220. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

222. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

224. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

226. Which causes red tide?

 
 
 
 

227. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

231. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

233. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

235. In Pteris, the archegonia are present:

 
 
 
 

236. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

237. Oswald Tippo’s classification is:

 
 
 
 

238.

239. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

240. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

244. 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:

 
 
 
 

245. Economic importance of bacteria lies in their being:

 
 
 
 

246. In Cycas the fertilization is:

 
 
 
 

247. The prothallus of fern is:

 
 
 
 

248. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Viruses are commonly transmitted in plants through:

 
 
 
 

252. Special feature of pollen grains of Pinus is :

 
 
 
 

253. Pteridophytes are also known as :

 
 
 
 

254. Winged seeds are found in :

 
 
 
 

255. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

261. What are plasmids?

 
 
 
 

262. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

264. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. The source of litmus is :

 
 
 
 

271. Iodine is obtained from:

 
 
 
 

272. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

273. Which of the following applies to Selaginella?

 
 
 
 

274. LSD is:

 
 
 
 

275. Lichens form the first community in

 
 
 
 

276. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Facultative parasite is:

 
 
 
 

281. Fertility of the soil is increased by:

 
 
 
 

282. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Water-borne bacterial diseases are:

 
 
 
 

295. Disease resistant plant varieties can be produced by :

 
 
 
 

296. Vascular cryptogams is the term used for:

 
 
 
 

297. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. Centric discoid form of diatom is:

 
 
 
 

302. In a bacteriophage, DNA is present in:

 
 
 
 

303. Why is Cycas called a living fossil?

 
 
 
 

304. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

306. Which of the following statement is correct?

 
 
 
 

307. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

310. Triple antigen injection or vaccine are for:

 
 
 
 

311. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

313.

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

 
 
 
 

315. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

318. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Funaria is :

 
 
 
 

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

 
 
 
 

323. Gymnosperms could also be called as:

 
 
 
 

324. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. Black rust of wheat is caused by:

 
 
 
 

328. Quarantine regulations are concerned with:

 
 
 
 

329. In tracheophyta:

 
 
 
 

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

 
 
 
 

331. Heterotrichous habit means :

 
 
 
 

332. Pythium debaryanum is the causative agent of:

 
 
 
 

333. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

334. The truncated cone of HIV consists of:

 
 
 
 

335. 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:

 
 
 
 

336. Common phycobiont in a lichen is :

 
 
 
 

337. Indusium in Dryopteris is:

 
 
 
 

338. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

340. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

342. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

344. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. Cap cells are found in the filament of:

 
 
 
 

348. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

353. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. Which among the following is a shrub?

 
 
 
 

357. Desired type of Cycas can be grown by:

 
 
 
 

358. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

360. In Selaginella, the microsporangia are:

 
 
 
 

361. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

363. Psilotum is:

 
 
 
 

364. All algae have:

 
 
 
 

365. Viruses are considered to be:

 
 
 
 

366. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

368. The mycelium of Rhizopus is:

 
 
 
 

369. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Which of the following have a prokaryotic cell?

 
 
 
 

373. Generic name of mango is:

 
 
 
 

374. Infective part of virus was discovered by:

 
 
 
 

375. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

376. Bacteria are found everywhere, except:

 
 
 
 

377. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

379. Which group of algae have an incipient nucleus?

 
 
 
 

380. Polystelic condition is found in:

 
 
 
 

381. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

383. Vascular cryptogam is the term used for :

 
 
 
 

384. Photoautotrophic bacteria have:

 
 
 
 

385. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

387. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. E coli is a:

 
 
 
 

391. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

392. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

394. The ascus of yeast contains:

 
 
 
 

395. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. The spermatozoids of Cycas are :

 
 
 
 

399. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

401. Smut of maize is caused by :

 
 
 
 

402. Nitrifying bacteria play an important role by converting:

 
 
 
 

403. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

405. 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?

 
 
 
 

406. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Isomorphic type alternation of generation is found in:

 
 
 
 

410. Rhizoids of Riccia are :

 
 
 
 

411. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

413. Which is not true for Escherichia coli?

 
 
 
 

414. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

416. Ovary is absent in :

 
 
 
 

417. Botulinum toxin effects:

 
 
 
 

418. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

420. Number of capsomeres forming capsid of TMV is:

 
 
 
 

421. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

423. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

426. Agar-agar is obtained from:

 
 
 
 

427. Antibiotic has been extracted from :

 
 
 
 

428. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

430. Plasmids are:

 
 
 
 

431. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

434. Bivalved siliceous shell or frustule occur in:

 
 
 
 

435. The coralloid roots are :

 
 
 
 

436. The fungi that grow on wood are called:

 
 
 
 

437. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. Transfusion tissue is present in the leaflet of:

 
 
 
 

445. Which condition is found in Cycas?

 
 
 
 

446. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Fairy ring is the name given to:

 
 
 
 

451. All archaebacteria lack:

 
 
 
 

452. Citrus canker is caused by :

 
 
 
 

453. Cyanophage is a virus that attacks:

 
 
 
 

454. Club moss and Peat moss belong to:

 
 
 
 

455. White rust of crucifers is caused by:

 
 
 
 

456. Ovules are not found enclosed in ovary in :

 
 
 
 

457. The most primitive vascular plants is:

 
 
 
 

458. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Pneumonia is caused by:

 
 
 
 

462. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

464. Interferon is a:

 
 
 
 

465. The male gametes of Pinus are :

 
 
 
 

466. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

468. Which of the following lichens is harmful?

 
 
 
 

469. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. The fungi used as food are:

 
 
 
 

473. Virion refers to:

 
 
 
 

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

 
 
 
 

475. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Bacteria which are spherical are called:

 
 
 
 

479. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

481. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. In moss, stomata are found:

 
 
 
 

486. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

488. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

490. Meristele of fern is:

 
 
 
 

491. Club moss is the common name of :

 
 
 
 

492. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

495. The zygospore in Rhizopus on germination forms:

 
 
 
 

496. The upper region of moss capsule is :

 
 
 
 

497. Yeast is a source of:

 
 
 
 

498. Metulae are found in:

 
 
 
 

499. Sexual reproduction in Rhizopus is by:

 
 
 
 

500. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

503. Cryptogams include :

 
 
 
 

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

 
 
 
 

505. The fern plant is:

 
 
 
 

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

 
 
 
 

507. What is mycorrhiza?

 
 
 
 

508. Enzymes are absent in:

 
 
 
 

509. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

512. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

514. Banana bunchy top is caused by :

 
 
 
 

515. Each chloroplast in Spirogyra bears :

 
 
 
 

516. The sporangia of Selaginella are attached:

 
 
 
 

517. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

519. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Select the wrong statement:

 
 
 
 

525. Seeds are characteristically found in :

 
 
 
 

526. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

528. Spirogyra differs from moss protonema in having :

 
 
 
 

529. Red rot of sugarcane is caused by :

 
 
 
 

530. Parmelia belongs to :

 
 
 
 

531. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. Synzoospore is produced in:

 
 
 
 

536. Mycoplasma is different from bacteria due to:

 
 
 
 

537. Most of the lichens are composed of :

 
 
 
 

538. Broad spectrum antibiotic is, which:

 
 
 
 

539. Diploxylic vascular bundles are found in:

 
 
 
 

540. The prothallus of fern represents the plant:

 
 
 
 

541. Small epidermal swellings due to infection are called :

 
 
 
 

542. Sporophyte of Funaria is :

 
 
 
 

543. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

545. Which is a tautonym?

 
 
 
 

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

 
 
 
 

547. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

549. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

554. 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?

 
 
 
 

555. Reproduction in Cycas takes place by :

 
 
 
 

556. Kuru, a human disease is caused by:

 
 
 
 

557. The fungi are mostly:

 
 
 
 

558. 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:

 
 
 
 

559. Cycas is :

 
 
 
 

560. Photosynthetic bacteria have:

 
 
 
 

561. Reserve food in Euglena is:

 
 
 
 

562. The sori in Dryopteris are found on:

 
 
 
 

563. Citrus canker is caused by:

 
 
 
 

564. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

569. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

577. Lichen show :

 
 
 
 

578. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

580. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

584. Acellular slime mold is/are:

 
 
 
 

585. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

587. The most important property of yeast is:

 
 
 
 

588. The chief characteristic of class Ascomycetes is:

 
 
 
 

589. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

599. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

602. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

604. A gill of Agaricus:

 
 
 
 

605. The chloroplast in Ulothrix is :

 
 
 
 

606. Bacteria differ from viruses in being sensitive to:

 
 
 
 

607. Most primitive embryophytes are placed in:

 
 
 
 

608. The root nodules of leguminous plants contain:

 
 
 
 

609. Embryo formation is not known in :

 
 
 
 

610. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

611. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

613. In angiosperms double fertilization represents:

 
 
 
 

614. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Funaria can be differentiated from Cycas :

 
 
 
 

620. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

622. Green plants are classified as :

 
 
 
 

623. Chief constituents of bordeaux mixture are :

 
 
 
 

624. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

626. Some bacteria cannot be killed easily because of:

 
 
 
 

627. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

632. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

633. Etiology includes the study of :

 
 
 
 

634. Ovules are not found enclosed in ovary in :

 
 
 
 

635. The gametophyte of fern bears:

 
 
 
 

636. Cycas plant in appearance resembles :

 
 
 
 

637. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

639. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

641. Spirogyra represents the :

 
 
 
 

642. Protistan algae obtain their food as:

 
 
 
 

643. Ulothrix produces :

 
 
 
 

644. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. Mostly type of zygospore in Ulothrix is:

 
 
 
 

652. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. Which of the following statements is not correct?

 
 
 
 

657. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

659. The leaves of Funaria are :

 
 
 
 

660. Fern phloem lacks:

 
 
 
 

661. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

663. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

666. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. Which is not found in bacteria?

 
 
 
 

670. Climbers are found in genus:

 
 
 
 

671. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

673. 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?

 
 
 
 

674. How is moss different from fern?

 
 
 
 

675. Streptomycin is obtained from:

 
 
 
 

676. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

678. Asexual reproductive body of Volvox is called:

 
 
 
 

679. The nucleus of bacteria is:

 
 
 
 

680. Which of the following is a monocot?

 
 
 
 

681. In moss, reduction division occurs in :

 
 
 
 

682. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

684. Liverworts are included in :

 
 
 
 

685. Azolla growing in paddy fields helps in:

 
 
 
 

686. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Little leaf disease of Brinjal is caused by:

 
 
 
 

690. The development of Selaginella embryo is:

 
 
 
 

691. In dinoflagellates, the two flagella are:

 
 
 
 

692. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

694. Green plants are classified as:

 
 
 
 

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

 
 
 
 

696. Mycoplasma was discovered by:

 
 
 
 

697. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Yeast grows more rapidly in:

 
 
 
 

703. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

709. The middle sterile part of capsule is called:

 
 
 
 

710. . Tapetum develops in:

 
 
 
 

711. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

713. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

715. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

717. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

719. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

721. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

723. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Water-net is the name of:

 
 
 
 

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

 
 
 
 

730. Which of the following is true for Selaginella?

 
 
 
 

731. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. The smallest bacterium is:

 
 
 
 

739. Penicillin was discovered by:

 
 
 
 

740. True sexuality is not found in:

 
 
 
 

741. The sporophyte of Riccia is :

 
 
 
 

742. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

744. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

746. The two conjugating gametangia of Rhizopus are:

 
 
 
 

747. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

749. Streptomyces falls under:

 
 
 
 

750. Mycoplasma are:

 
 
 
 

751. In Gymnosperms endosperm is a:

 
 
 
 

752. Heterosporous pteridophytes always form:

 
 
 
 

753. Downy mildew disease is caused by :

 
 
 
 

754. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

756. Enteric bacteria are those bacteria that live:

 
 
 
 

757. Funaria is a Bryophyta because :

 
 
 
 

758. Reproduction in Rhizopus is:

 
 
 
 

759. Standard size of a herbarium sheet is:

 
 
 
 

760. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

761. Bentham and Hooker placed gymnosperms:

 
 
 
 

762. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

764. The chief characteristic of bryophyta is that :

 
 
 
 

765. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

767. Ginkgo biloba is a:

 
 
 
 

768. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

770. Milk is converted to curd by:

 
 
 
 

771. Total parasites belong to:

 
 
 
 

772. 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:

 
 
 
 

773. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

775. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

782. Which is a fungicide?

 
 
 
 

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

 
 
 
 

784. Ovules are not found enclosed in ovary of:

 
 
 
 

785. Yeast belongs to class:

 
 
 
 

786. Embryophyta includes:

 
 
 
 

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

 
 
 
 

788. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

790. Linnaeus is credited with introducing:

 
 
 
 

791. Most common type of conjugation in Spirogyra is :

 
 
 
 

792. The central part of Funaria axis is :

 
 
 
 

793. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Longest known virus is:

 
 
 
 

797. Funaria are commonly found :

 
 
 
 

798. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

803. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

805. The group algae possesses representatives belonging to kingdom:

 
 
 
 

806. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

808. What is a vector?

 
 
 
 

809. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

811. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

813. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

815. Fruits are not found in :

 
 
 
 

816. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

818. Heterocysts are found in :

 
 
 
 

819. The term stele was given by:

 
 
 
 

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

 
 
 
 

821. Which part of Riccia bears nurse cells?

 
 
 
 

822. How a fern differs from a moss?

 
 
 
 

823. The antibiotic is obtained from:

 
 
 
 

824. Soil fertility is lost by the activities of:

 
 
 
 

825. The megaspore of Selaginella on germination produces:

 
 
 
 

826. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. The first to isolate a plant virus was:

 
 
 
 

831. The ferns are usually found:

 
 
 
 

832. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

834. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

836. Male gametes in Dryopteris are:

 
 
 
 

837. Nannandria are:

 
 
 
 

838. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

840. Methanogens belong to:

 
 
 
 

841. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

844. Anoxygenic photosynthesis occurs in:

 
 
 
 

845. The mode of nutrition of bacteria is usually:

 
 
 
 

846. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

848. The tallest moss in the world is :

 
 
 
 

849. Cycas revoluta is widely grown as :

 
 
 
 

850. Which of the following have algal zone?

 
 
 
 

851. The alga, Spirogyra are found in :

 
 
 
 

852. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Lichens reproduce by :

 
 
 
 

856. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

862. Saccharomyces ludwigii ascus produces:

 
 
 
 

863. Who discovered heterothallism in fungi?

 
 
 
 

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