Quiz_Random

1. What are Cyanobacteria?

 
 
 
 

2. 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:

 
 
 
 

3. Water-net is the name of:

 
 
 
 

4. In Gymnosperms endosperm is a:

 
 
 
 

5. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

11. Mycoplasmas are not viruses in nature because:

 
 
 
 

12. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

17. Typhoid in man is caused by:

 
 
 
 

18. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

20. Isomorphic type alternation of generation is found in:

 
 
 
 

21. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

23. Funaria is :

 
 
 
 

24. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

26. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Coenogamete is found in:

 
 
 
 

33. The middle sterile part of capsule is called:

 
 
 
 

34.

35. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

37. The antibiotic is obtained from:

 
 
 
 

38. Meristele of fern is:

 
 
 
 

39. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. The sporophyte of Riccia is :

 
 
 
 

43. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

45. 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:

 
 
 
 

46. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

48. Red rot of sugarcane is caused by:

 
 
 
 

49. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

50. In Cycas microsporangia are borne on:

 
 
 
 

51. Oswald Tippo’s classification was based on :

 
 
 
 

52. Botulism is a:

 
 
 
 

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

 
 
 
 

54. Which of the following have a prokaryotic cell?

 
 
 
 

55. Which of the following is a heterosporous pteridophyte?

 
 
 
 

56. The sori in Dryopteris are found on:

 
 
 
 

57. Bacteria differ from viruses in being sensitive to:

 
 
 
 

58. One of the distinctive feature of Spirogyra is :

 
 
 
 

59. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

61. Mycoplasma are:

 
 
 
 

62. Select the wrong statement:

 
 
 
 

63. Lichens are the indicator of pollution :

 
 
 
 

64. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

66. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

68. Some biologists have used the term Mycetozoa for:

 
 
 
 

69. Lichens are ecologically important because :

 
 
 
 

70. Pneumonia is caused by:

 
 
 
 

71. The group algae possesses representatives belonging to kingdom:

 
 
 
 

72. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Ulothrix produces :

 
 
 
 

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

 
 
 
 

78. Facultative parasite is:

 
 
 
 

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

 
 
 
 

80. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

82. Mucilaginous canals in Cycas are found in :

 
 
 
 

83. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. The development of sporangium in Selaginella is:

 
 
 
 

88. Transfusion tissue is present in the leaflet of:

 
 
 
 

89. Ovules are not found enclosed in ovary in :

 
 
 
 

90. Saccharomyces is well known for:

 
 
 
 

91. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

93. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Nitrogen-fixing bacteria may be located:

 
 
 
 

97. Small epidermal swellings due to infection are called :

 
 
 
 

98. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

100. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

102. In Pteris, the roots are:

 
 
 
 

103. Standard size of a herbarium sheet is:

 
 
 
 

104. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Club moss is the common name of :

 
 
 
 

108. Which class of Protozoa includes all parasitic forms?

 
 
 
 

109. Most primitive embryophytes are placed in:

 
 
 
 

110. Agar-agar is obtained from:

 
 
 
 

111. Pasteurized milk is:

 
 
 
 

112. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

114. Ovary is absent in:

 
 
 
 

115. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

117. The roots of Cycas are :

 
 
 
 

118. Bacteria are considered to be plants because they:

 
 
 
 

119. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

124. Usually, bacteria reproduce by:

 
 
 
 

125. Pinus microsporophyll bears:

 
 
 
 

126. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

128. Pasteur is famous for his:

 
 
 
 

129. Ergot is obtained from :

 
 
 
 

130. In moss, sporogenous tissue arises from:

 
 
 
 

131. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. The development of Selaginella embryo is:

 
 
 
 

135. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Who named prion?

 
 
 
 

140. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

148. Proembryo in Pinus is :

 
 
 
 

149. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

154. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

156. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

158. Which of the following is sago palm?

 
 
 
 

159. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

161. An alga which is rich in proteins:

 
 
 
 

162. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

172. To which class Riccia belongs :

 
 
 
 

173. Which is a redwood tree?

 
 
 
 

174. What is absent in Deuteromycetes?

 
 
 
 

175. Smut of maize is caused by :

 
 
 
 

176. Selaginella differs from Moss in having:

 
 
 
 

177. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

179. The smallest bacterium is:

 
 
 
 

180. Which is a tautonym?

 
 
 
 

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

 
 
 
 

182. Fruiting body of lichens is :

 
 
 
 

183. Liverworts are included in :

 
 
 
 

184. Who discovered cyanophages?

 
 
 
 

185. Pythium debaryanum is the causative agent of:

 
 
 
 

186. Diploxylic vascular bundles are found in:

 
 
 
 

187. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

192. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

194.

 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

198. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

200. What is streptomycin?

 
 
 
 

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

 
 
 
 

202. Gram stain is used to:

 
 
 
 

203. Halophiles are the bacteria that require for growth:

 
 
 
 

204. Streptomyces falls under:

 
 
 
 

205. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Fruits are not found in :

 
 
 
 

210. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

213. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

215. Funaria is :

 
 
 
 

216. The leaves of Funaria are :

 
 
 
 

217. The smallest unit of classification is:

 
 
 
 

218. The flagella of Chlamydomonas are:

 
 
 
 

219. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

220. Sporophyte of fern is:

 
 
 
 

221. Linnaeus is credited with introducing:

 
 
 
 

222. The teeth of peristome of Funaria are :

 
 
 
 

223. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

225. Bacteriophage consists of:

 
 
 
 

226. Which of the following have algal zone?

 
 
 
 

227. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

229. The prothallus of fern is:

 
 
 
 

230. Red rot of sugarcane is caused by :

 
 
 
 

231. True sexuality is not found in:

 
 
 
 

232. Winged seeds are found in :

 
 
 
 

233. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

235. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

236.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

244. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Smallpox is caused by:

 
 
 
 

249. The spur of Pinus roxburghii has :

 
 
 
 

250. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

252. Vascular tissue is found in :

 
 
 
 

253. In Funaria, calyptra is derived from :

 
 
 
 

254. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Male gametophyte of Selaginella is found:

 
 
 
 

258. Heterotrichous habit means :

 
 
 
 

259. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

260. The nucleus of bacteria is:

 
 
 
 

261. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

263. Most primitive kind of flower is represented by:

 
 
 
 

264. Total parasites belong to:

 
 
 
 

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

 
 
 
 

266. Roots are absent in :

 
 
 
 

267. Cycas is similar to a mustard plant :

 
 
 
 

268. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

270. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

272. Each chloroplast in Spirogyra bears :

 
 
 
 

273. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

275. Chemosynthetic bacteria are:

 
 
 
 

276. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

278. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

283. Which of the following is true for Selaginella?

 
 
 
 

284. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

286. The mycelium of Rhizopus is:

 
 
 
 

287. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. Zoogametes are not found in:

 
 
 
 

291. Cycas plant in appearance resembles :

 
 
 
 

292. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

293. Fern plants are:

 
 
 
 

294. Which is a fungicide?

 
 
 
 

295. Multicellular and jacketed sex organs are found in :

 
 
 
 

296. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

298. The tree fern is:

 
 
 
 

299. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304. Synzoospore is produced in:

 
 
 
 

305. All archaebacteria lack:

 
 
 
 

306. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

310. Which is the correct statement about Selaginella?

 
 
 
 

311. In dinoflagellates, the two flagella are:

 
 
 
 

312. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

318. The Rhizopus gametes are formed in:

 
 
 
 

319. Sometimes the bacterial cell is enclosed in:

 
 
 
 

320. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

322. Virion refers to:

 
 
 
 

323. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

324. The antherozoids of Funaria are :

 
 
 
 

325. Germination of the seed of Pinus is :

 
 
 
 

326. Late blight of potato is caused by:

 
 
 
 

327. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. 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?

 
 
 
 

331. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

333. An Hfr bacterium is one that contains:

 
 
 
 

334. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

336. Wine turns sour because of:

 
 
 
 

337. The fungi used as food are:

 
 
 
 

338. The mode of nutrition of bacteria is usually:

 
 
 
 

339. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

341. Select the wrong statement:

 
 
 
 

342. Seeds are characteristically found in:

 
 
 
 

343. Centric discoid form of diatom is:

 
 
 
 

344. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. Acetobacter is useful in:

 
 
 
 

348. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. The young leaves of Cycas have :

 
 
 
 

354. Early blight of potato is caused by:

 
 
 
 

355. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

358. Who among the following discovered virus?

 
 
 
 

359. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. Oswald Tippo’s classification is:

 
 
 
 

367. A gill of Agaricus:

 
 
 
 

368. First animal pathogenic virus was discovered by:

 
 
 
 

369. White rust of crucifers is caused by:

 
 
 
 

370. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

372. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

374. Antibiotic has been extracted from :

 
 
 
 

375. Choose the correct statement about Spirogyra:

 
 
 
 

376. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. The chief characteristic of class Ascomycetes is:

 
 
 
 

380. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

387. What is special feature of fern archegonia?

 
 
 
 

388. Some bacteria cannot be killed easily because of:

 
 
 
 

389. Vascular cryptogam is the term used for :

 
 
 
 

390. Fern prothallus produces:

 
 
 
 

391. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Water bloom is generally caused by :

 
 
 
 

395. 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:

 
 
 
 

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

 
 
 
 

397. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

399. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. The leaves of Funaria are :

 
 
 
 

403. Majority of lichens are :

 
 
 
 

404. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. Meiosis in Ulothrix takes place:

 
 
 
 

412. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

415. 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?

 
 
 
 

416. Aflatoxin is produced as a product in :

 
 
 
 

417. Climbers are found in genus:

 
 
 
 

418. Which of the following statement is correct?

 
 
 
 

419. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

421. In a diplontic life cycle:

 
 
 
 

422. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

424. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427. Streptomycin is obtained from:

 
 
 
 

428. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

430. Cell walls of Gram-positive bacteria contain:

 
 
 
 

431. Special feature of pollen grains of Pinus is :

 
 
 
 

432. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Mycoplasma is different from bacteria due to:

 
 
 
 

442. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

444. The sexual reproductive organs in Rhizopus are:

 
 
 
 

445. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

447. Polystelic condition is found in:

 
 
 
 

448. Citrus canker is caused by:

 
 
 
 

449. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

455. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

457. The central part of Funaria axis is :

 
 
 
 

458. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Mixed cropping helps :

 
 
 
 

462. In moss, reduction division occurs in :

 
 
 
 

463. Citrus canker is caused by :

 
 
 
 

464. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

466. The fungi are usually:

 
 
 
 

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

 
 
 
 

468. The two conjugating gametangia of Rhizopus are:

 
 
 
 

469. Sexual reproduction of lichen is due to :

 
 
 
 

470. Red rot of sugarcane is caused by :

 
 
 
 

471. Which of the following are absent in Mycoplasma?

 
 
 
 

472. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Ethylene oxide is widely used to:

 
 
 
 

476. Mycoplasma are sensitive to:

 
 
 
 

477. Funaria is a Bryophyta because :

 
 
 
 

478. Metulae are found in:

 
 
 
 

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

 
 
 
 

480. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

482. The gametophyte of moss has distinct phases :

 
 
 
 

483. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

485. In moss, calyptra is formed from:

 
 
 
 

486. In binomial system most of the words are:

 
 
 
 

487. Black rust of wheat is caused by:

 
 
 
 

488. How is moss different from fern?

 
 
 
 

489. The chief characteristic of bryophyta is that :

 
 
 
 

490. Protistan algae obtain their food as:

 
 
 
 

491. Which of the following statements is not correct?

 
 
 
 

492. Lichens show :

 
 
 
 

493. The Rhizopus is:

 
 
 
 

494. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Disease resistant plant varieties can be produced by :

 
 
 
 

499. The orders generally have the uniform endings:

 
 
 
 

500. Bentham and Hooker placed gymnosperms:

 
 
 
 

501. Pythium debaryanum is the causative agent of:

 
 
 
 

502. The archegonia in Selaginella develop on:

 
 
 
 

503. Fairy ring is the name given to:

 
 
 
 

504. Simple polyembryony is found in :

 
 
 
 

505. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

507. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Iodine is obtained from:

 
 
 
 

514. Cycas is different from mango in :

 
 
 
 

515. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

517. What are plasmids?

 
 
 
 

518. Asexual reproductive body of Volvox is called:

 
 
 
 

519. Economic importance of bacteria lies in their being:

 
 
 
 

520. Viruses have:

 
 
 
 

521. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

523. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

525. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

528. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

530. Embryo formation is not known in :

 
 
 
 

531. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

533. The coralloid roots are :

 
 
 
 

534. In Selaginella, the microsporangia are:

 
 
 
 

535. The fungi are mostly:

 
 
 
 

536. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. Number of capsomeres forming capsid of TMV is:

 
 
 
 

541. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

543. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

545. Green plants are classified as :

 
 
 
 

546. Cycas revoluta is widely grown as :

 
 
 
 

547. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

549. Reproduction in Cycas takes place by :

 
 
 
 

550. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

551. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

555. Fern prothallus is:

 
 
 
 

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

 
 
 
 

557. Azolla and Salvinia both are:

 
 
 
 

558. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

559. Photosynthetic bacteria have:

 
 
 
 

560. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

565. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

567. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

569. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

576. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

578. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583.

584. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. The microsporophylls on the cone of Cycas are :

 
 
 
 

594. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

595. Botulinum toxin effects:

 
 
 
 

596. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

598. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

603. Which of the following does not contain chlorophyll?

 
 
 
 

604. Pollination drop is:

 
 
 
 

605. The phloem of vascular system of Cycas is :

 
 
 
 

606. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

608. Mostly type of zygospore in Ulothrix is:

 
 
 
 

609. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. Saccharomyces ludwigii ascus produces:

 
 
 
 

613. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

615. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

617. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

619. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Fern phloem lacks:

 
 
 
 

623. The root nodules of leguminous plants contain:

 
 
 
 

624. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Lichens form the first community in

 
 
 
 

635. Plasmids are:

 
 
 
 

636. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

638. Longest known virus is:

 
 
 
 

639. Placenta in fern is:

 
 
 
 

640. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. The gametophyte produced by apospory is :

 
 
 
 

648. Among the algae kelps are :

 
 
 
 

649. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Which causes red tide?

 
 
 
 

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

 
 
 
 

654. Fruits are not found in:

 
 
 
 

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

 
 
 
 

656. Viroids have:

 
 
 
 

657. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

659. Embryophyta includes:

 
 
 
 

660. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

662. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

664. Cocci types of bacteria are:

 
 
 
 

665. Anoxygenic photosynthesis occurs in:

 
 
 
 

666. Which is a gametophytic tissue?

 
 
 
 

667. Lichens are indicators of :

 
 
 
 

668. Which one of the following is a monocot?

 
 
 
 

669. Psilotum is:

 
 
 
 

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

 
 
 
 

671. Broad spectrum antibiotic is, which:

 
 
 
 

672. The role of meiosis is for:

 
 
 
 

673. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

675. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

677. In Funaria :

 
 
 
 

678. Detailed study of bacteriophage was made by:

 
 
 
 

679. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

681. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

683. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

688. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

690. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. In Cycas:

 
 
 
 

695. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

697. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. The truncated cone of HIV consists of:

 
 
 
 

704. 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?

 
 
 
 

705. Banana bunchy top is caused by :

 
 
 
 

706. Methanogens belong to:

 
 
 
 

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

 
 
 
 

708. The megaspore of Selaginella on germination produces:

 
 
 
 

709. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

711. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. What is mycorrhiza?

 
 
 
 

715. Which is the nuclear material in bacteria?

 
 
 
 

716. Chemosynthetic bacteria are:

 
 
 
 

717. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

719. The chromosomal number in:

 
 
 
 

720. Most of the algae are :

 
 
 
 

721. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Aflatoxin is produced by:

 
 
 
 

725. Bacteria growing on synthetic medium are called:

 
 
 
 

726. Yeast belongs to class:

 
 
 
 

727. Vascular cryptogams is the term used for:

 
 
 
 

728. Viruses are commonly transmitted in plants through:

 
 
 
 

729. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

731. The largest alga is:

 
 
 
 

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

 
 
 
 

733. Bacteria are found everywhere, except:

 
 
 
 

734. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

739. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

741. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

743. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Heterospory is the production of:

 
 
 
 

747. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

751. Which of the following is a monocot?

 
 
 
 

752. Most primitive group of vascular plants are:

 
 
 
 

753. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. 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:

 
 
 
 

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

 
 
 
 

758. Cellular slime mold is:

 
 
 
 

759. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

761. Sporophyte of Funaria is :

 
 
 
 

762. The order generally ends with:

 
 
 
 

763. 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?

 
 
 
 

764. Which is absent from the xylem of Cycas?

 
 
 
 

765. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. What is a vector?

 
 
 
 

770. Which among the following is a shrub?

 
 
 
 

771. Reproduction in Rhizopus is:

 
 
 
 

772. Nannandria are:

 
 
 
 

773. Bivalved siliceous shell or frustule occur in:

 
 
 
 

774. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Who discovered streptomycin?

 
 
 
 

779. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Lichens reproduce by :

 
 
 
 

785. Endemic plants are characterised by their:

 
 
 
 

786. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

788. Male gametes in Dryopteris are:

 
 
 
 

789. Cycas is:

 
 
 
 

790. Ovules are not found enclosed in ovary of:

 
 
 
 

791. Amoeba is a member of the phylum:

 
 
 
 

792. Cryptogams include :

 
 
 
 

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

 
 
 
 

794. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

796. Ovary is absent in :

 
 
 
 

797. Why is Cycas called a living fossil?

 
 
 
 

798. Quarantine regulations are concerned with:

 
 
 
 

799. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

804. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

806. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

809. The ferns are usually found:

 
 
 
 

810. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

812. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Photoautotrophic bacteria have:

 
 
 
 

817. Heterosporous pteridophytes always form:

 
 
 
 

818. Triple antigen injection or vaccine are for:

 
 
 
 

819. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

821. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

823. Lichens are pioneers of vegetation in a :

 
 
 
 

824. The megasporangium of Selaginella is:

 
 
 
 

825. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

827. Iodine is obtained from :

 
 
 
 

828. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

830. Embryophyta includes :

 
 
 
 

831. LSD is:

 
 
 
 

832. Diphtheria is caused by:

 
 
 
 

833. Which condition is found in Cycas?

 
 
 
 

834. Which fixes atmospheric nitrogen?

 
 
 
 

835. In Herpes virus DNA is:

 
 
 
 

836. Which is not true for Escherichia coli?

 
 
 
 

837. Which statement is wrong in regard to bacteria?

 
 
 
 

838. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

840. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

842. In Gymnocarpeae the fruiting body is :

 
 
 
 

843. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

845. The ascus of yeast contains:

 
 
 
 

846. 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:

 
 
 
 

847. Protists which are diploid reproduce sexually by:

 
 
 
 

848. The prothallus of fern represents the plant:

 
 
 
 

849. Lichens reproduce by :

 
 
 
 

850. Protozoans are considered animals because these are:

 
 
 
 

851. The source of litmus is :

 
 
 
 

852. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

854. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. The archegonia of Selaginella are differentiated by:

 
 
 
 

861. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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