Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

5. Endemic plants are characterised by their:

 
 
 
 

6. The word “sea weeds” is used for:

 
 
 
 

7. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

9. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. The source of litmus is :

 
 
 
 

13. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

15. 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:

 
 
 
 

16. Proembryo in Pinus is :

 
 
 
 

17. The development of Selaginella embryo is:

 
 
 
 

18. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Pasteurized milk is:

 
 
 
 

22. In moss, conducting tissue is made up of

 
 
 
 

23. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Which have the largest antherozoid?

 
 
 
 

29. 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?

 
 
 
 

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

 
 
 
 

31. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

32. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

34. Infective part of virus was discovered by:

 
 
 
 

35. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Which is an edible fungus?

 
 
 
 

39. Lichen show :

 
 
 
 

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

 
 
 
 

41. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. Heterotrichous habit means :

 
 
 
 

49. Yeast grows more rapidly in:

 
 
 
 

50. Rhizophore of Selaginella is:

 
 
 
 

51. The order generally ends with:

 
 
 
 

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

 
 
 
 

53. Cyanophage is a virus that attacks:

 
 
 
 

54. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

56. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

58. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

60. Water bloom is generally caused by :

 
 
 
 

61. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

63. Clostridium can:

 
 
 
 

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

 
 
 
 

65. Sometimes the bacterial cell is enclosed in:

 
 
 
 

66. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. Coenogamete is found in:

 
 
 
 

71. Synzoospore is produced in:

 
 
 
 

72. Anoxygenic photosynthesis occurs in:

 
 
 
 

73. The fungi used as food are:

 
 
 
 

74. The most primitive vascular plants is:

 
 
 
 

75. Cryptogams include :

 
 
 
 

76. Genetic material of TMV is:

 
 
 
 

77. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

79. Protistan algae obtain their food as:

 
 
 
 

80. Kuru, a human disease is caused by:

 
 
 
 

81. The fungi that grow on wood are called:

 
 
 
 

82. Funaria is :

 
 
 
 

83. A gill of Agaricus:

 
 
 
 

84. Etiology includes the study of :

 
 
 
 

85. The zygospore in Rhizopus on germination forms:

 
 
 
 

86. Black rust of wheat is caused by:

 
 
 
 

87.

 

88. Detailed study of bacteriophage was made by:

 
 
 
 

89. Pollination drop is:

 
 
 
 

90. Reproduction in Cycas takes place by :

 
 
 
 

91. Most primitive group of vascular plants are:

 
 
 
 

92. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

94. The ascus of yeast contains:

 
 
 
 

95. Fruits are not found in:

 
 
 
 

96. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

98. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

99. Which of the following are absent in Mycoplasma?

 
 
 
 

100. The sporangiophores in Rhizopus are:

 
 
 
 

101. Redness of red sea is due to :

 
 
 
 

102. The Rhizopus gametes are formed in:

 
 
 
 

103. Which among the following is a shrub?

 
 
 
 

104. Bivalved siliceous shell or frustule occur in:

 
 
 
 

105. Yeast belongs to class:

 
 
 
 

106. Botulinum toxin effects:

 
 
 
 

107. Gram stain is used to:

 
 
 
 

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

 
 
 
 

109. Male gametes in Dryopteris are:

 
 
 
 

110. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

112. Heterospory and ligulate leaves are a feature of:

 
 
 
 

113. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

115. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. The DNA of E coli is:

 
 
 
 

121. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

126. Which of the following are included in Tracheophyta?

 
 
 
 

127. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. The fern plant is:

 
 
 
 

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

 
 
 
 

132. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

135. Mycoplasma are:

 
 
 
 

136. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

141. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

147. The middle sterile part of capsule is called:

 
 
 
 

148. The largest known bacterium is:

 
 
 
 

149. 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:

 
 
 
 

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

 
 
 
 

151. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

153. Which of the following is true for Selaginella?

 
 
 
 

154. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

156. Fruits are not found in :

 
 
 
 

157. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

162. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

168. In a bacteriophage, DNA is present in:

 
 
 
 

169. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

171. Pteridophytes are also known as :

 
 
 
 

172. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178.

179. Which of the following does not contain chlorophyll?

 
 
 
 

180. Downy mildew disease is caused by :

 
 
 
 

181. Ectocarpus produces:

 
 
 
 

182. Germination of the seed of Pinus is :

 
 
 
 

183. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

185. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

187. In Cycas:

 
 
 
 

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

 
 
 
 

189. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

191. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

193. Funaria is :

 
 
 
 

194. Lichens are indicators of :

 
 
 
 

195. Which is the correct statement about Selaginella?

 
 
 
 

196. The most important property of yeast is:

 
 
 
 

197. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

202. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

204. The antherozoids of Funaria are :

 
 
 
 

205. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

206. Psilotum is:

 
 
 
 

207. Ovules are not found enclosed in ovary in :

 
 
 
 

208. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

211. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

213. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

219. Fern phloem lacks:

 
 
 
 

220. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

222. Cycas revoluta is widely grown as :

 
 
 
 

223. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. The fungi are usually:

 
 
 
 

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

 
 
 
 

229. Woody climbers are known as :

 
 
 
 

230. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

236. Heterospory is the production of:

 
 
 
 

237. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

239. In Pteris, the roots are:

 
 
 
 

240. In tracheophyta:

 
 
 
 

241. Yeast is a source of:

 
 
 
 

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

 
 
 
 

243. The development of sporangium in Selaginella is:

 
 
 
 

244. Majority of lichens are :

 
 
 
 

245. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. The chief characteristic of class Ascomycetes is:

 
 
 
 

249. An Hfr bacterium is one that contains:

 
 
 
 

250. The largest alga is:

 
 
 
 

251. Most of the lichens are composed of :

 
 
 
 

252. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

257. Amoeba is a member of the phylum:

 
 
 
 

258. Common phycobiont in a lichen is :

 
 
 
 

259.

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

 
 
 
 

261. Bentham and Hooker placed gymnosperms:

 
 
 
 

262. Pseudomycelium is found in:

 
 
 
 

263. Lichens form the first community in

 
 
 
 

264. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

270. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

272. Virus and bacteriophage are made-up of:

 
 
 
 

273. Fruiting body of lichens is :

 
 
 
 

274. Lichens show :

 
 
 
 

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

 
 
 
 

276. Most of the algae are :

 
 
 
 

277. The tree fern is:

 
 
 
 

278. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

279. Some bacteria cannot be killed easily because of:

 
 
 
 

280. Which part of Riccia bears nurse cells?

 
 
 
 

281. The orders generally have the uniform endings:

 
 
 
 

282. The young leaves of Cycas have :

 
 
 
 

283. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

284. The leafy fern plant represents the:

 
 
 
 

285. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

287. Sexual reproduction in Rhizopus is by:

 
 
 
 

288. Zoogametes are not found in:

 
 
 
 

289. Bryophyta have a special character from other plants:

 
 
 
 

290. Broad spectrum antibiotic is, which:

 
 
 
 

291. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

293. Embryophyta includes:

 
 
 
 

294. The gametophyte produced by apospory is :

 
 
 
 

295. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

297. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

298. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

300. The group algae possesses representatives belonging to kingdom:

 
 
 
 

301. Special feature of pollen grains of Pinus is :

 
 
 
 

302. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

304. The chromosomal number in:

 
 
 
 

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

 
 
 
 

306. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Green plants are classified as:

 
 
 
 

310. Parmelia belongs to :

 
 
 
 

311. Which is a gametophytic tissue?

 
 
 
 

312. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

314. Which is an exception to cell theory?

 
 
 
 

315. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

318. Transfusion tissue is present in the leaflet of:

 
 
 
 

319. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

324. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

326. Viruses are commonly transmitted in plants through:

 
 
 
 

327. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

329. Oswald Tippo’s classification was based on :

 
 
 
 

330. The sori in Dryopteris are found on:

 
 
 
 

331. Which of the following have a prokaryotic cell?

 
 
 
 

332. Pinus is:

 
 
 
 

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

 
 
 
 

334. Which one of the following statement is wrong?

 
 
 
 

335. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

337. In moss, reduction division occurs in :

 
 
 
 

338. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

340. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

345. Virion refers to:

 
 
 
 

346. Most common type of conjugation in Spirogyra is :

 
 
 
 

347. Diploxylic vascular bundles are found in:

 
 
 
 

348. Water-net is the name of:

 
 
 
 

349. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

354. Lichens reproduce by :

 
 
 
 

355. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

357. Rhizopus belongs to:

 
 
 
 

358.

359. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. The disease symptom necrosis refers to :

 
 
 
 

363. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

365. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

367. Bacteria differ from viruses in being sensitive to:

 
 
 
 

368. Typhoid in man is caused by:

 
 
 
 

369. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. The prothallus of fern is:

 
 
 
 

373. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. Standard size of a herbarium sheet is:

 
 
 
 

377. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

379. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

381. In Cycas which structure is equivalent to stamen?

 
 
 
 

382. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

389. First animal pathogenic virus was discovered by:

 
 
 
 

390. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Viruses have:

 
 
 
 

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

 
 
 
 

395. Which of the following is a parasitic algae?

 
 
 
 

396. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

398. Leaf spot of groundnut is caused by :

 
 
 
 

399. The spermatozoids of Cycas are :

 
 
 
 

400. In Selaginella, the microsporangia are:

 
 
 
 

401. The seedless plants which possess vascular tissues are:

 
 
 
 

402. Which is not true for Escherichia coli?

 
 
 
 

403. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

405. In Pteris, the archegonia are present:

 
 
 
 

406. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. Maximum diversity of life forms occurs in :

 
 
 
 

413. All archaebacteria lack:

 
 
 
 

414. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

417. Ulothrix produces :

 
 
 
 

418. Male gametophyte of Selaginella is found:

 
 
 
 

419. Fruits are not found in Cycas because:

 
 
 
 

420. All algae have:

 
 
 
 

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

 
 
 
 

422. The rhizoids of Funaria are :

 
 
 
 

423. Fern prothallus produces:

 
 
 
 

424. Bacteria growing on synthetic medium are called:

 
 
 
 

425. Which of the following statements is not correct?

 
 
 
 

426. The leaves of Funaria are :

 
 
 
 

427. Absorptive nutrition is:

 
 
 
 

428. Select the wrong statement:

 
 
 
 

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

 
 
 
 

430. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

433. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

442. Water-borne bacterial diseases are:

 
 
 
 

443. The first to isolate a plant virus was:

 
 
 
 

444. The sexual reproductive organs in Rhizopus are:

 
 
 
 

445. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Mycoplasmas are not viruses in nature because:

 
 
 
 

450. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

451. Chemosynthetic bacteria are:

 
 
 
 

452. Climbers are found in genus:

 
 
 
 

453. Which of the following is a heterosporous pteridophyte?

 
 
 
 

454. Placenta in fern is:

 
 
 
 

455. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

457. Milk is converted to curd by:

 
 
 
 

458. Ovary is absent in:

 
 
 
 

459. In Cycas the fertilization is:

 
 
 
 

460. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. In Funaria, calyptra is derived from :

 
 
 
 

464. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

466. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. The gametophyte of fern bears:

 
 
 
 

470. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. Aflatoxin is produced by:

 
 
 
 

474. The zoospores of Ulothrix are :

 
 
 
 

475. Which of the following statement is correct?

 
 
 
 

476. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

478. 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:

 
 
 
 

479. The coralloid roots are :

 
 
 
 

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

 
 
 
 

481. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

483. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. Pollination in Cycas takes place by :

 
 
 
 

487. Citrus canker is caused by:

 
 
 
 

488. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

490. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

495. In moss, stomata are found:

 
 
 
 

496. Sporophyte of Funaria is :

 
 
 
 

497. Spirogyra differs from moss protonema in having :

 
 
 
 

498. In moss, sporophyte is formed on:

 
 
 
 

499. Soil fertility is lost by the activities of:

 
 
 
 

500. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

502. Club moss is the common name of :

 
 
 
 

503. Among the algae kelps are :

 
 
 
 

504. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Mucilaginous canals in Cycas are found in :

 
 
 
 

509. Cycas plant in appearance resembles :

 
 
 
 

510. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

515. What is absent in Deuteromycetes?

 
 
 
 

516. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. Longest known virus is:

 
 
 
 

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

 
 
 
 

522. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

524. Red rot of sugarcane is caused by :

 
 
 
 

525. What is special feature of fern archegonia?

 
 
 
 

526. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

527. E coli is a:

 
 
 
 

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

 
 
 
 

529. Citrus canker is caused by :

 
 
 
 

530. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

532. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

539. Azolla and Salvinia both are:

 
 
 
 

540. The fungi are mostly:

 
 
 
 

541. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

543. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

545. Which one of the following is a monocot?

 
 
 
 

546. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

548. Cocci types of bacteria are:

 
 
 
 

549. Nitrifying bacteria play an important role by converting:

 
 
 
 

550. Usually, bacteria reproduce by:

 
 
 
 

551. Choose the correct statement about Spirogyra:

 
 
 
 

552. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

553. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Spermatophyta are characterized by producing:

 
 
 
 

557. LSD is:

 
 
 
 

558. Facultative parasite is:

 
 
 
 

559. Fairy ring is the name given to:

 
 
 
 

560. Photosynthetic bacteria have:

 
 
 
 

561. Lichens reproduce by :

 
 
 
 

562. Cellular slime mold is:

 
 
 
 

563. Where does meiosis occur in yeast?

 
 
 
 

564. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

566. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

568. Funaria is a Bryophyta because :

 
 
 
 

569. Penicillin was discovered by:

 
 
 
 

570. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

572. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

574. Photosynthetic protists belong to:

 
 
 
 

575. Acellular slime mold is/are:

 
 
 
 

576. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

578. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

580. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. Asexual reproductive body of Volvox is called:

 
 
 
 

584. Circular DNA is seen in:

 
 
 
 

585. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Multicellular and jacketed sex organs are found in :

 
 
 
 

589. The photosynthetic protists are:

 
 
 
 

590. Funaria can be differentiated from Cycas :

 
 
 
 

591. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Ginkgo biloba is a:

 
 
 
 

600. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

601. Reserve food in Euglena is:

 
 
 
 

602. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. In Funaria :

 
 
 
 

608. John Hutchinson divided dicots into two divisions:

 
 
 
 

609. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Discovery of penicillin was based on:

 
 
 
 

614. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. Pollination in Pinus is :

 
 
 
 

619. The leaves of Funaria are :

 
 
 
 

620. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

621. The lambda phase is a:

 
 
 
 

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

 
 
 
 

623. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. Which of the following is a monocot?

 
 
 
 

628. Cycas is similar to a mustard plant :

 
 
 
 

629. What is streptomycin?

 
 
 
 

630. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

632. Little leaf disease of Brinjal is caused by:

 
 
 
 

633. Embryo formation is not known in :

 
 
 
 

634. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. Which of the following lichens is harmful?

 
 
 
 

639. Halophiles are the bacteria that require for growth:

 
 
 
 

640. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

642. Cleavage polyembryony is found in :

 
 
 
 

643. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. Which class of Protozoa includes all parasitic forms?

 
 
 
 

648. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Cell walls of Gram-positive bacteria contain:

 
 
 
 

653. Total parasites belong to:

 
 
 
 

654. Seeds are characteristically found in :

 
 
 
 

655. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

660. The sporangia of Selaginella are attached:

 
 
 
 

661. Which statement is wrong in regard to bacteria?

 
 
 
 

662. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

663. What are plasmids?

 
 
 
 

664. Seeds are characteristically found in:

 
 
 
 

665. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. 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:

 
 
 
 

670. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

672. Antibiotic has been extracted from :

 
 
 
 

673. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

675. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

677. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. The plants of Funaria grow :

 
 
 
 

682. Photoautotrophic bacteria have:

 
 
 
 

683. Iodine is obtained from:

 
 
 
 

684. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. Which group of algae have an incipient nucleus?

 
 
 
 

688. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Fern prothallus is:

 
 
 
 

694. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

696. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

697. Mixed cropping helps :

 
 
 
 

698. True sexuality is not found in:

 
 
 
 

699. The antibiotic is obtained from:

 
 
 
 

700. The alga, Spirogyra are found in :

 
 
 
 

701. Antibiotics cure the disease by:

 
 
 
 

702. Which causes red tide?

 
 
 
 

703. Germ theory of disease was proposed by:

 
 
 
 

704. 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?

 
 
 
 

705. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. The leaf of Cycas shows:

 
 
 
 

709. In a diplontic life cycle:

 
 
 
 

710. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

712. Embryophyta includes :

 
 
 
 

713. Which of the following is sago palm?

 
 
 
 

714. Agar-agar is obtained from:

 
 
 
 

715. The truncated cone of HIV consists of:

 
 
 
 

716. Lichens are the indicator of pollution :

 
 
 
 

717. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

719. 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:

 
 
 
 

720. Club moss and Peat moss belong to:

 
 
 
 

721. The Rhizopus is:

 
 
 
 

722. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

724. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

726. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

728. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

735. Spermatophyta are characterized by producing:

 
 
 
 

736. Protozoans are considered animals because these are:

 
 
 
 

737. Triple antigen injection or vaccine are for:

 
 
 
 

738. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

740. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

746. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

748. Ovules are not found enclosed in ovary of:

 
 
 
 

749. 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:

 
 
 
 

750. Acetobacter is useful in:

 
 
 
 

751. Simple polyembryony is found in :

 
 
 
 

752. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

754. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

756. Bacteria are placed under:

 
 
 
 

757. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

759. Sporophyte of fern is:

 
 
 
 

760. Cycas is :

 
 
 
 

761. Rhizopus and yeast are usually:

 
 
 
 

762. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

767. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Which of the following is true for viruses?

 
 
 
 

772. Selaginella differs from Moss in having:

 
 
 
 

773. Red rot of sugarcane is caused by :

 
 
 
 

774. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

776. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

781. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. In Gymnosperms endosperm is a:

 
 
 
 

785. Plasmids are:

 
 
 
 

786. Iodine is obtained from :

 
 
 
 

787. Isomorphic type alternation of generation is found in:

 
 
 
 

788. Meiosis in Ulothrix takes place:

 
 
 
 

789. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Which lichen is called Reindeer moss?

 
 
 
 

795. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. Red rot of sugarcane is caused by:

 
 
 
 

799. Rhizoids of Riccia are :

 
 
 
 

800. Which is a tautonym?

 
 
 
 

801. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

803. Some diseases caused by bacteria are:

 
 
 
 

804. What is the role of nitrifying bacteria?

 
 
 
 

805. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

807. Select the correct statement: (NEET 2016)

 
 
 
 

808. The tallest moss in the world is :

 
 
 
 

809. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

811. Which of the following are included in Tracheophyta?

 
 
 
 

812. Interferon is a:

 
 
 
 

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

 
 
 
 

814. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

819. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

821. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

823. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

828. Early blight of potato is caused by:

 
 
 
 

829. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

831. The teeth of peristome of Funaria are :

 
 
 
 

832. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

833. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

838. Methanogens belong to:

 
 
 
 

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

 
 
 
 

840. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

843. White rust of crucifers is caused by:

 
 
 
 

844. Botulism is a:

 
 
 
 

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

 
 
 
 

846. Pinus gerardiana is :

 
 
 
 

847. The flagella of Chlamydomonas are:

 
 
 
 

848. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

850. The smallest bacterium is:

 
 
 
 

851. Heterocysts are found in :

 
 
 
 

852. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Bacteria were first discovered by:

 
 
 
 

856. Funaria are commonly found :

 
 
 
 

857. Sleeping sickness disease in man is caused by:

 
 
 
 

858. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

861. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Which of the following have algal zone?