Quiz_Random

1. Nitrifying bacteria play an important role by converting:

 
 
 
 

2. Coenogamete is found in:

 
 
 
 

3. Spermatophyta are characterized by producing:

 
 
 
 

4. Selaginella differs from Moss in having:

 
 
 
 

5. Which is a tautonym?

 
 
 
 

6. Funaria is :

 
 
 
 

7. Which is a fungicide?

 
 
 
 

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

 
 
 
 

9. Antibiotics cure the disease by:

 
 
 
 

10. 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:

 
 
 
 

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

 
 
 
 

12. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

14. Nannandria are:

 
 
 
 

15. Proembryo in Pinus is :

 
 
 
 

16. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Kuru, a human disease is caused by:

 
 
 
 

20. Ulothrix produces :

 
 
 
 

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

 
 
 
 

22. Fern prothallus produces:

 
 
 
 

23. Mycoplasmas are not viruses in nature because:

 
 
 
 

24. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

26. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Cap cells are found in the filament of:

 
 
 
 

31. In Gymnosperms endosperm is a:

 
 
 
 

32. Lichen show :

 
 
 
 

33. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

34. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Pteridophytes are also known as :

 
 
 
 

42. Fruits are not found in :

 
 
 
 

43. Most of the lichens are composed of :

 
 
 
 

44. In moss, reduction division occurs in :

 
 
 
 

45. Genetic material of TMV is:

 
 
 
 

46. Sporophyte of fern is:

 
 
 
 

47. The truncated cone of HIV consists of:

 
 
 
 

48. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

50. Ovary is absent in:

 
 
 
 

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

 
 
 
 

52. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

57. Black rust of wheat is caused by:

 
 
 
 

58. Seeds are characteristically found in:

 
 
 
 

59. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Helotism word is used for the symbiosis between :

 
 
 
 

68. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. True sexuality is not found in:

 
 
 
 

72. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

73. Asexual reproductive body of Volvox is called:

 
 
 
 

74. Which of the following are included in Tracheophyta?

 
 
 
 

75. All protozoans possess:

 
 
 
 

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

 
 
 
 

77. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Which of the following applies to Selaginella?

 
 
 
 

86. Roots are absent in :

 
 
 
 

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

 
 
 
 

88. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

90. Disease resistant plant varieties can be produced by :

 
 
 
 

91. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. NBG of Lucknow is now named as:

 
 
 
 

98. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. 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:

 
 
 
 

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

 
 
 
 

104. The prothallus of fern represents the plant:

 
 
 
 

105. Embryo formation is not known in :

 
 
 
 

106. The most important property of yeast is:

 
 
 
 

107. Spirogyra represents the :

 
 
 
 

108. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

110. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

112.

 

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

 
 
 
 

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

 
 
 
 

115. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

117. Mycoplasma are:

 
 
 
 

118. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

122. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. In moss, stomata are found:

 
 
 
 

128. Photoautotrophic bacteria have:

 
 
 
 

129. The zygospore in Rhizopus on germination forms:

 
 
 
 

130. Special feature of pollen grains of Pinus is :

 
 
 
 

131. Heterocysts are found in :

 
 
 
 

132. Which is absent from the xylem of Cycas?

 
 
 
 

133. Mycoplasma was discovered by:

 
 
 
 

134. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

136. Sporophyte of Funaria is :

 
 
 
 

137. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

139. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

140. Penicillin is obtained from:

 
 
 
 

141. Meiosis in Ulothrix takes place:

 
 
 
 

142. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

144. Pollination in Pinus is :

 
 
 
 

145. The plants of Funaria grow :

 
 
 
 

146. Multicellular and jacketed sex organs are found in :

 
 
 
 

147. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Chemosynthetic bacteria are:

 
 
 
 

152. Discovery of penicillin was based on:

 
 
 
 

153. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

155. The fern plant is:

 
 
 
 

156. Spermatophyta are characterized by producing:

 
 
 
 

157. Which of the following have a prokaryotic cell?

 
 
 
 

158. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

160. Red rot of sugarcane is caused by :

 
 
 
 

161. The archegonia in Selaginella develop on:

 
 
 
 

162. 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:

 
 
 
 

163. John Hutchinson divided dicots into two divisions:

 
 
 
 

164. Cellular slime mold is:

 
 
 
 

165. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

169. Which of the following does not contain chlorophyll?

 
 
 
 

170. Fruits are not found in:

 
 
 
 

171. TMV was isolated in crystalline form by:

 
 
 
 

172. The DNA of E coli is:

 
 
 
 

173. Anoxygenic photosynthesis occurs in:

 
 
 
 

174. White rust of crucifers is caused by:

 
 
 
 

175. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Ovules are not found enclosed in ovary in :

 
 
 
 

181. The group algae possesses representatives belonging to kingdom:

 
 
 
 

182. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. In Cycas the fertilization is:

 
 
 
 

186. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

188. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

190. Who discovered cyanophages?

 
 
 
 

191. Majority of lichens are :

 
 
 
 

192. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

194. Bacteria differ from viruses in being sensitive to:

 
 
 
 

195. Azolla and Salvinia both are:

 
 
 
 

196. Placenta in fern is:

 
 
 
 

197. The chloroplast of Chlamydomonas are:

 
 
 
 

198. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

200. Acellular slime mold is/are:

 
 
 
 

201. Which among the following is a shrub?

 
 
 
 

202. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

204. The mode of nutrition of bacteria is usually:

 
 
 
 

205. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

208. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

210. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

212. Which of the following is true for Selaginella?

 
 
 
 

213. The coralloid roots are :

 
 
 
 

214. In Cycas which structure is equivalent to stamen?

 
 
 
 

215. Liverworts are included in :

 
 
 
 

216. The term stele was given by:

 
 
 
 

217. Cycas is:

 
 
 
 

218. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Economic importance of bacteria lies in their being:

 
 
 
 

224. Reproduction in Cycas takes place by :

 
 
 
 

225. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

227. The megaspore of Selaginella on germination produces:

 
 
 
 

228. The teeth of peristome of Funaria are :

 
 
 
 

229. The gametophyte of fern is as:

 
 
 
 

230. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

232. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. Mucilaginous canals in Cycas are found in :

 
 
 
 

242. Funaria can be differentiated from Cycas :

 
 
 
 

243. Ovary is absent in :

 
 
 
 

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

 
 
 
 

245. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

247. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

249. The middle sterile part of capsule is called:

 
 
 
 

250. To which class Riccia belongs :

 
 
 
 

251. An alga which is rich in proteins:

 
 
 
 

252. One of the distinctive feature of Spirogyra is :

 
 
 
 

253. The root nodules of leguminous plants contain:

 
 
 
 

254. The mycelium of Rhizopus is:

 
 
 
 

255. Ovules are not found enclosed in ovary of:

 
 
 
 

256. The alga, Spirogyra are found in :

 
 
 
 

257. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

259. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

264. Fertility of the soil is increased by:

 
 
 
 

265. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. The prothallus of fern is:

 
 
 
 

270. Viroids have:

 
 
 
 

271. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

273. In a diplontic life cycle:

 
 
 
 

274. Which lichen is called Reindeer moss?

 
 
 
 

275. The tree fern is:

 
 
 
 

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

 
 
 
 

277. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. 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:

 
 
 
 

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

 
 
 
 

283. Small epidermal swellings due to infection are called :

 
 
 
 

284. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

286. First animal pathogenic virus was discovered by:

 
 
 
 

287. The sporangia of Selaginella are attached:

 
 
 
 

288. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

290. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

292. Most primitive embryophytes are placed in:

 
 
 
 

293. Acetobacter is useful in:

 
 
 
 

294. The gametophyte of moss has distinct phases :

 
 
 
 

295. The spermatozoids of Cycas are :

 
 
 
 

296. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

298. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

300. How is moss different from fern?

 
 
 
 

301. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304.

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

 
 
 
 

306. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. What is the role of nitrifying bacteria?

 
 
 
 

310. The smallest unit of classification is:

 
 
 
 

311. Vascular cryptogam is the term used for :

 
 
 
 

312. Rhizoids of Riccia are :

 
 
 
 

313. Who discovered streptomycin?

 
 
 
 

314. Protists which are diploid reproduce sexually by:

 
 
 
 

315. Soil fertility is lost by the activities of:

 
 
 
 

316. The stele of Dryopteris is a:

 
 
 
 

317. 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?

 
 
 
 

318. The central part of Funaria axis is :

 
 
 
 

319. The role of meiosis is for:

 
 
 
 

320. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

322. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. The seedless plants which possess vascular tissues are:

 
 
 
 

327. Yeast grows more rapidly in:

 
 
 
 

328. Which fixes atmospheric nitrogen?

 
 
 
 

329. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

334. Cyathia is characterized by:

 
 
 
 

335. The photosynthetic protists are:

 
 
 
 

336. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

338. The ascus of yeast contains:

 
 
 
 

339. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

341. The gametophyte of fern bears:

 
 
 
 

342. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

347. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

349. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

356. Yeast belongs to class:

 
 
 
 

357. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. Polystelic condition is found in:

 
 
 
 

362. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

364. Select the wrong statement:

 
 
 
 

365. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

367. The antherozoids of Funaria are :

 
 
 
 

368. The development of Selaginella embryo is:

 
 
 
 

369. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

376. Spirogyra differs from moss protonema in having :

 
 
 
 

377. The sporangium of fern contains nearly:

 
 
 
 

378. Funaria is :

 
 
 
 

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

 
 
 
 

380. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Most appropriate word for protozoans is:

 
 
 
 

387. The sporophyte of Riccia is :

 
 
 
 

388. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

390. Rice, pea, potato are :

 
 
 
 

391. An Hfr bacterium is one that contains:

 
 
 
 

392. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

394. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

396. Water bloom is generally caused by :

 
 
 
 

397. Plasmids are:

 
 
 
 

398. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

399. The nucleus of bacteria is:

 
 
 
 

400. Red rot of sugarcane is caused by:

 
 
 
 

401. The young leaves of Cycas have :

 
 
 
 

402. The Rhizopus is:

 
 
 
 

403. Germ theory of disease was proposed by:

 
 
 
 

404. Which part of Riccia bears nurse cells?

 
 
 
 

405. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

410. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Heterosporous pteridophytes always form:

 
 
 
 

414. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

417. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

419. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. Cycas is :

 
 
 
 

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

 
 
 
 

424. Maximum diversity of life forms occurs in :

 
 
 
 

425. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

427. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

429. Leaf spot of groundnut is caused by :

 
 
 
 

430. In moss, conducting tissue is made up of

 
 
 
 

431. What is streptomycin?

 
 
 
 

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

 
 
 
 

433. The tallest moss in the world is :

 
 
 
 

434. Linnaeus is credited with introducing:

 
 
 
 

435. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

437. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Who named prion?

 
 
 
 

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

 
 
 
 

442. The leafy fern plant represents the:

 
 
 
 

443. Lichens reproduce by :

 
 
 
 

444. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

446. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

447. Green plants are classified as :

 
 
 
 

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

 
 
 
 

449. Virus and bacteriophage are made-up of:

 
 
 
 

450. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

452. What is mycorrhiza?

 
 
 
 

453. Club moss is the common name of :

 
 
 
 

454. Lichens are indicators of :

 
 
 
 

455. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

460. Penicillin was discovered by:

 
 
 
 

461. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

463. Rhizopus and yeast are usually:

 
 
 
 

464. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

465. Bacteriophage consists of:

 
 
 
 

466. Iodine is obtained from:

 
 
 
 

467. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

471. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

473. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. The sori in Dryopteris are found on:

 
 
 
 

478. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

480. The fungi that grow on wood are called:

 
 
 
 

481. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

483. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

484. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

487. Chief constituents of bordeaux mixture are :

 
 
 
 

488. The male gametes of Pinus are :

 
 
 
 

489. Fern phloem lacks:

 
 
 
 

490. Photosynthetic bacteria have:

 
 
 
 

491. Bivalved siliceous shell or frustule occur in:

 
 
 
 

492. E coli is a:

 
 
 
 

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

 
 
 
 

494. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

496. The rhizoids of Funaria are :

 
 
 
 

497.

498. The spur of Pinus roxburghii has :

 
 
 
 

499. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. Transfusion tissue is present in the leaflet of:

 
 
 
 

503. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Funaria is a Bryophyta because :

 
 
 
 

508. Early blight of potato is caused by:

 
 
 
 

509. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

511. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

513. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

518. Cryptogams include :

 
 
 
 

519. Generic name of mango is:

 
 
 
 

520. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. What is absent in Deuteromycetes?

 
 
 
 

527. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

533. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

535. Tautonyms are illegitimate in:

 
 
 
 

536. Smut of maize is caused by :

 
 
 
 

537. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

544. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

546. Which of the following is a monocot?

 
 
 
 

547. Which of the following statement is correct?

 
 
 
 

548. The vascular bundles of Cycas stem are :

 
 
 
 

549. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Clostridium can:

 
 
 
 

557. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

562. Club moss and Peat moss belong to:

 
 
 
 

563. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

565. Cell walls of Gram-positive bacteria contain:

 
 
 
 

566. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

568. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

570. Which statement is wrong in regard to bacteria?

 
 
 
 

571. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

573. The chromosomal number in:

 
 
 
 

574. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

576. Lichens are pioneers of vegetation in a :

 
 
 
 

577. Embryophyta includes :

 
 
 
 

578. Fruits are not found in Cycas because:

 
 
 
 

579. The lichens growing on rocks are called :

 
 
 
 

580. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

581. The order generally ends with:

 
 
 
 

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

 
 
 
 

583. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

585. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

587. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

589. Isomorphic type alternation of generation is found in:

 
 
 
 

590. Interferon is a:

 
 
 
 

591. 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:

 
 
 
 

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

 
 
 
 

593. Enzymes are absent in:

 
 
 
 

594. Fern plants are:

 
 
 
 

595. Aflatoxin is produced as a product in :

 
 
 
 

596. Absorptive nutrition is:

 
 
 
 

597. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

599. Sexual reproduction in Rhizopus is by:

 
 
 
 

600. The fungi used as food are:

 
 
 
 

601. Which is not found in bacteria?

 
 
 
 

602. Which of the following is true for viruses?

 
 
 
 

603. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

605. All archaebacteria lack:

 
 
 
 

606. Black rust of wheat is caused by:

 
 
 
 

607. In moss, sporophyte is formed on:

 
 
 
 

608. In Funaria :

 
 
 
 

609. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

611. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

616. In Funaria, calyptra is derived from :

 
 
 
 

617. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Halophiles are the bacteria that require for growth:

 
 
 
 

629. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

631. To which country Antony van Leeuwenhoek belong?

 
 
 
 

632. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

634. 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?

 
 
 
 

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

 
 
 
 

636. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

638. Pasteurized milk is:

 
 
 
 

639. Viruses are commonly transmitted in plants through:

 
 
 
 

640. Lichens show :

 
 
 
 

641. The first to isolate a plant virus was:

 
 
 
 

642. Citrus canker is caused by:

 
 
 
 

643. Streptomycin is obtained from:

 
 
 
 

644. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

650. Which of the following is a heterosporous pteridophyte?

 
 
 
 

651. Viruses have:

 
 
 
 

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

 
 
 
 

653. 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?

 
 
 
 

654. Enteric bacteria are those bacteria that live:

 
 
 
 

655. The lambda phase is a:

 
 
 
 

656. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

658. Which is not true for Escherichia coli?

 
 
 
 

659. Late blight of potato is caused by:

 
 
 
 

660. Red rot of sugarcane is caused by :

 
 
 
 

661. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

663. Vegetative reproduction in Cycas is by means of :

 
 
 
 

664. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

666. A gill of Agaricus:

 
 
 
 

667. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

669. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

679. The disease symptom necrosis refers to :

 
 
 
 

680. Black rust of wheat is caused by:

 
 
 
 

681. Iodine is obtained from :

 
 
 
 

682. In moss, calyptra is formed from:

 
 
 
 

683. Bentham and Hooker placed gymnosperms:

 
 
 
 

684. Botulism is a:

 
 
 
 

685. The archegonia of Selaginella are differentiated by:

 
 
 
 

686. The microsporophylls on the cone of Cycas are :

 
 
 
 

687. In binomial system most of the words are:

 
 
 
 

688. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. Some diseases caused by bacteria are:

 
 
 
 

695. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

700. Which of the following lichens is harmful?

 
 
 
 

701. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. Facultative parasite is:

 
 
 
 

705. 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:

 
 
 
 

706. The largest known bacterium is:

 
 
 
 

707. Psilotum is:

 
 
 
 

708. The fungi are mostly:

 
 
 
 

709. Cycas is different from mango in :

 
 
 
 

710. In Pteris, the archegonia are present:

 
 
 
 

711. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

713. Vascular cryptogams is the term used for:

 
 
 
 

714. Water-borne bacterial diseases are:

 
 
 
 

715. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

717. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Longest known virus is:

 
 
 
 

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

 
 
 
 

722. Pythium debaryanum is the causative agent of:

 
 
 
 

723. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

725. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

727. Which bacteria convert nitrate into nitrogen?

 
 
 
 

728. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

730. The fungi are usually:

 
 
 
 

731. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

733. In Cycas:

 
 
 
 

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

 
 
 
 

735. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

736. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

738. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

741. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

743. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Fern prothallus is:

 
 
 
 

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

 
 
 
 

748. Bacteria were first discovered by:

 
 
 
 

749. Indusium in Dryopteris is:

 
 
 
 

750. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

751. LSD is:

 
 
 
 

752. The source of litmus is :

 
 
 
 

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

 
 
 
 

754. Pinus is:

 
 
 
 

755. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

760. Which of the following have algal zone?

 
 
 
 

761. Reproduction in Rhizopus is:

 
 
 
 

762. Triple antigen injection or vaccine are for:

 
 
 
 

763. The leaves of Funaria are :

 
 
 
 

764. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

766. In moss, peristomial teeth are:

 
 
 
 

767. Mycoplasma are sensitive to:

 
 
 
 

768. Redness of red sea is due to :

 
 
 
 

769. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Ovules are not found enclosed in ovary in :

 
 
 
 

773. Choose the correct statement about Spirogyra:

 
 
 
 

774. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

777. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

778. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

780. Ginkgo biloba is a:

 
 
 
 

781. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

783. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

788. Pollination drop is:

 
 
 
 

789. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

790. Agar-agar is obtained from:

 
 
 
 

791. Infective part of virus was discovered by:

 
 
 
 

792. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

794. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

806. Lichens reproduce by :

 
 
 
 

807. Who discovered heterothallism in fungi?

 
 
 
 

808.

809. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

811. Cyanophage is a virus that attacks:

 
 
 
 

812. Yeast is a source of:

 
 
 
 

813. Citrus canker is caused by :

 
 
 
 

814. Lichens form the first community in

 
 
 
 

815. The zoospores of Ulothrix are :

 
 
 
 

816. Male gametophyte of Selaginella is found:

 
 
 
 

817. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

822. Antibiotic has been extracted from :

 
 
 
 

823. Typhoid in man is caused by:

 
 
 
 

824. The genetic material of poxvirus is:

 
 
 
 

825. Among the algae kelps are :

 
 
 
 

826. The largest alga is:

 
 
 
 

827. Woody climbers are known as :

 
 
 
 

828. Climbers are found in genus:

 
 
 
 

829. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

833. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

834. Select the wrong statement:

 
 
 
 

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

 
 
 
 

836. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

838. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

839. Nitrogen-fixing bacteria may be located:

 
 
 
 

840. Mixed cropping helps :

 
 
 
 

841. Male gametes in Dryopteris are:

 
 
 
 

842. Which condition is found in Cycas?

 
 
 
 

843. Winged seeds are found in :

 
 
 
 

844. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

847. Ethylene oxide is widely used to:

 
 
 
 

848. Winged pollen grains are found in :

 
 
 
 

849. All algae have:

 
 
 
 

850. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Which causes red tide?

 
 
 
 

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