Quiz_Random

1. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

2. Azolla and Salvinia both are:

 
 
 
 

3. The truncated cone of HIV consists of:

 
 
 
 

4. Psilotum is:

 
 
 
 

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

 
 
 
 

6. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

7. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

9. The microsporophylls on the cone of Cycas are :

 
 
 
 

10. All algae have:

 
 
 
 

11. Which class of Protozoa includes all parasitic forms?

 
 
 
 

12. Endemic plants are characterised by their:

 
 
 
 

13. Which is an exception to cell theory?

 
 
 
 

14. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

20. The alga, Spirogyra are found in :

 
 
 
 

21. Most primitive embryophytes are placed in:

 
 
 
 

22. Most of the lichens are composed of :

 
 
 
 

23. Mycoplasma are sensitive to:

 
 
 
 

24. The genetic material of poxvirus is:

 
 
 
 

25. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

31. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

33. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

38. An alga which is rich in proteins:

 
 
 
 

39. Pseudomycelium is found in:

 
 
 
 

40. 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:

 
 
 
 

41. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Which is the correct statement about Selaginella?

 
 
 
 

45. The sporangia of Selaginella are attached:

 
 
 
 

46. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

47. Broad spectrum antibiotic is, which:

 
 
 
 

48. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

49. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

51. Liverworts are included in :

 
 
 
 

52. Placenta in fern is:

 
 
 
 

53. What is streptomycin?

 
 
 
 

54. Vegetative reproduction in Cycas is by means of :

 
 
 
 

55. Viruses are commonly transmitted in plants through:

 
 
 
 

56. Plasmids are:

 
 
 
 

57. . Tapetum develops in:

 
 
 
 

58. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65.

66. Funaria is :

 
 
 
 

67. Winged seeds are found in :

 
 
 
 

68. The chloroplast of Chlamydomonas are:

 
 
 
 

69. The phloem of vascular system of Cycas is :

 
 
 
 

70. The teeth of peristome of Funaria are :

 
 
 
 

71. Sporophyte of Funaria is :

 
 
 
 

72. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

74. Which of the following shows heterotrichous habit?

 
 
 
 

75. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

77. Usually, bacteria reproduce by:

 
 
 
 

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. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. The sporophyte of Riccia is represented by :

 
 
 
 

84. Some bacteria cannot be killed easily because of:

 
 
 
 

85. In angiosperms double fertilization represents:

 
 
 
 

86. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. White rust of crucifers is caused by:

 
 
 
 

90. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

92. Bacteria which are spherical are called:

 
 
 
 

93. Most primitive kind of flower is represented by:

 
 
 
 

94. In moss, stomata are found:

 
 
 
 

95. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

97. In Gymnosperms endosperm is a:

 
 
 
 

98. Special feature of pollen grains of Pinus is :

 
 
 
 

99. Generic name of mango is:

 
 
 
 

100. Water-net is the name of:

 
 
 
 

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

 
 
 
 

102. Diphtheria is caused by:

 
 
 
 

103. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

105. The Rhizopus is:

 
 
 
 

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

 
 
 
 

107. The Rhizopus gametes are formed in:

 
 
 
 

108. Chief constituents of bordeaux mixture are :

 
 
 
 

109. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

111. Virion refers to:

 
 
 
 

112. Red rot of sugarcane is caused by :

 
 
 
 

113. The male gametes of Pinus are :

 
 
 
 

114. Synzoospore is produced in:

 
 
 
 

115. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

117. Detailed study of bacteriophage was made by:

 
 
 
 

118. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Oswald Tippo’s classification is:

 
 
 
 

122. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

124. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

126. Iodine is obtained from :

 
 
 
 

127. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. The megasporangium of Selaginella is:

 
 
 
 

134. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

136. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

138. Ovules are not found enclosed in ovary of:

 
 
 
 

139. The group algae possesses representatives belonging to kingdom:

 
 
 
 

140. Which of the following statement is correct?

 
 
 
 

141. Absorptive nutrition is:

 
 
 
 

142. Which of the following is a monocot?

 
 
 
 

143. Pasteurization of milk involves heating for:

 
 
 
 

144. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

146. In moss, peristomial teeth are:

 
 
 
 

147. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

149. Citrus canker is caused by :

 
 
 
 

150. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Rhizoids of Riccia are :

 
 
 
 

155. Zoogametes are not found in:

 
 
 
 

156. Citrus canker is caused by:

 
 
 
 

157. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

159. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

161. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Ergot is obtained from :

 
 
 
 

166. Pinus is:

 
 
 
 

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

 
 
 
 

168. Sometimes the bacterial cell is enclosed in:

 
 
 
 

169. Fern phloem lacks:

 
 
 
 

170. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

172. Ethylene oxide is widely used to:

 
 
 
 

173. Green plants are classified as:

 
 
 
 

174. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

178. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. The plants of Funaria grow :

 
 
 
 

184. Seeds are characteristically found in :

 
 
 
 

185. Mycoplasma is different from bacteria due to:

 
 
 
 

186. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

188. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Which of the following are included in Tracheophyta?

 
 
 
 

193. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. Oswald Tippo’s classification was based on :

 
 
 
 

197. Reproduction in Rhizopus is:

 
 
 
 

198. 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:

 
 
 
 

199. What are Cyanobacteria?

 
 
 
 

200. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

202. Climbers are found in genus:

 
 
 
 

203. Each chloroplast in Spirogyra bears :

 
 
 
 

204. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. Spermatophyta are characterized by producing:

 
 
 
 

208. The sori in Dryopteris are found on:

 
 
 
 

209. Seeds are characteristically found in:

 
 
 
 

210. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

212. The root nodules of leguminous plants contain:

 
 
 
 

213. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

218. Which of the following have algal zone?

 
 
 
 

219. 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:

 
 
 
 

220. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

222. Virus and bacteriophage are made-up of:

 
 
 
 

223. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. Who named prion?

 
 
 
 

227. Infective part of virus was discovered by:

 
 
 
 

228. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

231. The fungi used as food are:

 
 
 
 

232. Metulae are found in:

 
 
 
 

233. Pollination drop is:

 
 
 
 

234. Ovules are not found enclosed in ovary in :

 
 
 
 

235. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

237. Which is a redwood tree?

 
 
 
 

238. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

240. In tracheophyta:

 
 
 
 

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

 
 
 
 

242. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

244. Which is a tautonym?

 
 
 
 

245. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

247. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. In Funaria :

 
 
 
 

252. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

254. Leaf spot of groundnut is caused by :

 
 
 
 

255. The chloroplast in Ulothrix is :

 
 
 
 

256. Leprosy is caused by:

 
 
 
 

257. In Cycas which structure is equivalent to stamen?

 
 
 
 

258. The fern plant is:

 
 
 
 

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

 
 
 
 

260. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

262. Centric discoid form of diatom is:

 
 
 
 

263. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

265. The prothallus of fern is:

 
 
 
 

266. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. Which of the following does not contain chlorophyll?

 
 
 
 

270. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

278. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

280. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

287. Pinus microsporophyll bears:

 
 
 
 

288. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

290. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

292. The chief characteristic of class Ascomycetes is:

 
 
 
 

293. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

295. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

297. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

299. The megaspore of Selaginella on germination produces:

 
 
 
 

300. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

306. Siphonogamy is found in:

 
 
 
 

307. Ginkgo biloba is a:

 
 
 
 

308. Photosynthetic protists belong to:

 
 
 
 

309. Pteridophytes are also known as :

 
 
 
 

310. Late blight of potato is caused by:

 
 
 
 

311. Late blight of potato is caused by :

 
 
 
 

312. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

314. The tallest moss in the world is :

 
 
 
 

315. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

317. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

323. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

325. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

327. Which of the following statements is not correct?

 
 
 
 

328. The spur of Pinus roxburghii has :

 
 
 
 

329. Multicellular and jacketed sex organs are found in :

 
 
 
 

330. Downy mildew disease is caused by :

 
 
 
 

331. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Disease resistant plant varieties can be produced by :

 
 
 
 

340. How is moss different from fern?

 
 
 
 

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

 
 
 
 

342. Total parasites belong to:

 
 
 
 

343. Which of the following is a heterosporous pteridophyte?

 
 
 
 

344. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Reproduction in Cycas takes place by :

 
 
 
 

351. The mycelium of Rhizopus is:

 
 
 
 

352. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. 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:

 
 
 
 

356. Fern prothallus is:

 
 
 
 

357. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

359. 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?

 
 
 
 

360. All protozoans possess:

 
 
 
 

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

 
 
 
 

362. The roots of Cycas are :

 
 
 
 

363. Redness of red sea is due to :

 
 
 
 

364. Penicillin was discovered by:

 
 
 
 

365. Black rust of wheat is caused by:

 
 
 
 

366. Funaria are commonly found :

 
 
 
 

367. Aflatoxin is produced by:

 
 
 
 

368. Tautonyms are illegitimate in:

 
 
 
 

369. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Black rust of wheat is caused by:

 
 
 
 

375. Majority of lichens are :

 
 
 
 

376. Helotism word is used for the symbiosis between :

 
 
 
 

377. Lichens are pioneers of vegetation in a :

 
 
 
 

378. Bacteria are found everywhere, except:

 
 
 
 

379. Select the wrong statement:

 
 
 
 

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

 
 
 
 

381. The largest known bacterium is:

 
 
 
 

382. Lichens reproduce by :

 
 
 
 

383. Etiology includes the study of :

 
 
 
 

384. Cleavage polyembryony is found in :

 
 
 
 

385. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

391. Cycas is similar to a mustard plant :

 
 
 
 

392. Yeast grows more rapidly in:

 
 
 
 

393. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

395. Among the algae kelps are :

 
 
 
 

396. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

398. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

400. Sporophyte of fern is:

 
 
 
 

401. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

403. In dinoflagellates, the two flagella are:

 
 
 
 

404. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

406. Which among the following is a shrub?

 
 
 
 

407. 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:

 
 
 
 

408. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. Chemosynthetic bacteria are:

 
 
 
 

412. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

413. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

415. The young leaves of Cycas have :

 
 
 
 

416. TMV was isolated in crystalline form by:

 
 
 
 

417. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

423. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

425. The central part of Funaria axis is :

 
 
 
 

426. Vascular cryptogam is the term used for :

 
 
 
 

427. Streptomyces falls under:

 
 
 
 

428. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

433. NBG of Lucknow is now named as:

 
 
 
 

434. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

436. Viroids have:

 
 
 
 

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

 
 
 
 

438. Nannandria are:

 
 
 
 

439. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. Streptomycin is obtained from:

 
 
 
 

444. Which fixes atmospheric nitrogen?

 
 
 
 

445. The smallest bacterium is:

 
 
 
 

446. The sporangium of fern contains nearly:

 
 
 
 

447. The disease apple scab is caused by:

 
 
 
 

448. Choose the correct statement about Spirogyra:

 
 
 
 

449. Discovery of penicillin was based on:

 
 
 
 

450. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

455. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

457. Methanogens belong to:

 
 
 
 

458. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. First animal pathogenic virus was discovered by:

 
 
 
 

463. The ascus of yeast contains:

 
 
 
 

464. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

466. In a diplontic life cycle:

 
 
 
 

467. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. The orders generally have the uniform endings:

 
 
 
 

471. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. The source of litmus is :

 
 
 
 

476. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

477. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. Green plants are classified as :

 
 
 
 

481. Ovary is absent in:

 
 
 
 

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

 
 
 
 

483. Aflatoxin is produced as a product in :

 
 
 
 

484. Fruits are not found in Cycas because:

 
 
 
 

485. Polystelic condition is found in:

 
 
 
 

486. Small epidermal swellings due to infection are called :

 
 
 
 

487. Bivalved siliceous shell or frustule occur in:

 
 
 
 

488. The fungi are mostly:

 
 
 
 

489. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. The fungi are usually:

 
 
 
 

493. The disease symptom necrosis refers to :

 
 
 
 

494. The lambda phase is a:

 
 
 
 

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

 
 
 
 

496. What is a vector?

 
 
 
 

497. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Heterospory is the production of:

 
 
 
 

501. Ovary is absent in :

 
 
 
 

502. Cycas is :

 
 
 
 

503. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

510. Heterotrichous habit means :

 
 
 
 

511. Bentham and Hooker placed gymnosperms:

 
 
 
 

512. Ulothrix produces :

 
 
 
 

513. The chromosomal number in:

 
 
 
 

514. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

516. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. What is special feature of fern archegonia?

 
 
 
 

521. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

523. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

524. Ovules are not found enclosed in ovary in :

 
 
 
 

525. Which group of algae have an incipient nucleus?

 
 
 
 

526. Some biologists have used the term Mycetozoa for:

 
 
 
 

527. Fertility of the soil is increased by:

 
 
 
 

528. Yeast is a source of:

 
 
 
 

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

 
 
 
 

530. Club moss is the common name of :

 
 
 
 

531. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

533. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

538. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

540. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

542. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

544. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

546. The largest alga is:

 
 
 
 

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

 
 
 
 

548. Fern plants are:

 
 
 
 

549. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

553. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Winged pollen grains are found in :

 
 
 
 

557. Mycoplasma are:

 
 
 
 

558. Where does meiosis occur in yeast?

 
 
 
 

559. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

561. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. Antibiotic has been extracted from :

 
 
 
 

565. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

567. The role of meiosis is for:

 
 
 
 

568. The zoospores of Ulothrix are :

 
 
 
 

569. Enzymes are absent in:

 
 
 
 

570. Interferon is a:

 
 
 
 

571. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Coenogamete is found in:

 
 
 
 

575. Who discovered cyanophages?

 
 
 
 

576.

 

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

 
 
 
 

578. The gametophyte of fern is as:

 
 
 
 

579. Cycas revoluta is widely grown as :

 
 
 
 

580. In moss, calyptra is formed from:

 
 
 
 

581. 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?

 
 
 
 

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

 
 
 
 

583. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

585. Rhizophore of Selaginella is:

 
 
 
 

586. The prothallus of fern represents the plant:

 
 
 
 

587. Fruits are not found in :

 
 
 
 

588. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. Some diseases caused by bacteria are:

 
 
 
 

594. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. Photoautotrophic bacteria have:

 
 
 
 

598. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

600. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

602. Bacteria are considered to be plants because they:

 
 
 
 

603. Bacteria were first discovered by:

 
 
 
 

604. The similarity between cyanobacteria and bacteria:

 
 
 
 

605. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. 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?

 
 
 
 

614. Triple antigen injection or vaccine are for:

 
 
 
 

615. Most primitive embryophytes are placed in :

 
 
 
 

616. Antibiotics cure the disease by:

 
 
 
 

617. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. Facultative parasite is:

 
 
 
 

621. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. E coli is a:

 
 
 
 

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

 
 
 
 

627. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

629. Fruits are not found in:

 
 
 
 

630. Cycas plant in appearance resembles :

 
 
 
 

631. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. The antherozoids of Funaria are :

 
 
 
 

639. Which causes red tide?

 
 
 
 

640. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

642. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

645. Facultative saprophyte is:

 
 
 
 

646. The leafy fern plant represents the:

 
 
 
 

647. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. The rhizoids of Funaria are :

 
 
 
 

651. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

653. Sexual reproduction in Rhizopus is by:

 
 
 
 

654. Meristele of fern is:

 
 
 
 

655. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

657. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

663. Protistan algae obtain their food as:

 
 
 
 

664. The fungi that grow on wood are called:

 
 
 
 

665. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. Cyanophage is a virus that attacks:

 
 
 
 

672. Water-borne bacterial diseases are:

 
 
 
 

673. All archaebacteria lack:

 
 
 
 

674. The sporangiophores in Rhizopus are:

 
 
 
 

675.

676. Bacteria differ from viruses in being sensitive to:

 
 
 
 

677. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

679. Pythium debaryanum is the causative agent of:

 
 
 
 

680. Pasteur is famous for his:

 
 
 
 

681. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

683. Mostly type of zygospore in Ulothrix is:

 
 
 
 

684. Rice, pea, potato are :

 
 
 
 

685. Embryophyta includes :

 
 
 
 

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

 
 
 
 

687. In moss, sporogenous tissue arises from:

 
 
 
 

688. The seedless plants which possess vascular tissues are:

 
 
 
 

689. Bacteria are placed under:

 
 
 
 

690. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

692. Simple polyembryony is found in :

 
 
 
 

693. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

700. Which is an edible fungus?

 
 
 
 

701. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. Cocci types of bacteria are:

 
 
 
 

705. The spermatozoids of Cycas are :

 
 
 
 

706. To which country Antony van Leeuwenhoek belong?

 
 
 
 

707. Banana bunchy top is caused by :

 
 
 
 

708. What is the role of nitrifying bacteria?

 
 
 
 

709. Kuru, a human disease is caused by:

 
 
 
 

710. Most of the algae are :

 
 
 
 

711. The stele of Dryopteris is a:

 
 
 
 

712. Nitrifying bacteria play an important role by converting:

 
 
 
 

713. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Cycas is:

 
 
 
 

717. The development of Selaginella embryo is:

 
 
 
 

718. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

721. The zygospore in Rhizopus on germination forms:

 
 
 
 

722. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

724. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

726. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

728. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

730. In moss, sporophyte is formed on:

 
 
 
 

731. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

734. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

736. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Cyathia is characterized by:

 
 
 
 

746. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Typhoid in man is caused by:

 
 
 
 

750. The antibiotic is obtained from:

 
 
 
 

751. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Heterocysts are found in :

 
 
 
 

760.

761. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

764. Milk is converted to curd by:

 
 
 
 

765. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

767. In Pteris, the archegonia are present:

 
 
 
 

768. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

770. Ectocarpus produces:

 
 
 
 

771. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

773. Which of the following lichens is harmful?

 
 
 
 

774. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. Bryophyta have been placed in cryptogams because:

 
 
 
 

779. Why is Cycas called a living fossil?

 
 
 
 

780. What is absent in Deuteromycetes?

 
 
 
 

781. Black rust of wheat is caused by:

 
 
 
 

782. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

784. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Funaria is a Bryophyta because :

 
 
 
 

788. Pasteurized milk is:

 
 
 
 

789. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

793. Select the wrong statement:

 
 
 
 

794. Spirogyra represents the :

 
 
 
 

795. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. Pneumonia is caused by:

 
 
 
 

800. Heterospory and ligulate leaves are a feature of:

 
 
 
 

801. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. Viruses have:

 
 
 
 

806. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. Roots are absent in :

 
 
 
 

811. Chemosynthetic bacteria are:

 
 
 
 

812. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

815. Maximum diversity of life forms occurs in :

 
 
 
 

816. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

817. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

819. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

821. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. Lichens show :

 
 
 
 

825. LSD is:

 
 
 
 

826. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

828. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

830. Early blight of potato is caused by:

 
 
 
 

831. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

833. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

835. Embryophyta includes:

 
 
 
 

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

 
 
 
 

837. Economic importance of bacteria lies in their being:

 
 
 
 

838. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

840. Proembryo in Pinus is :

 
 
 
 

841. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

844. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

846. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. Genetic material of TMV is:

 
 
 
 

852. Longest known virus is:

 
 
 
 

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

 
 
 
 

854. Pythium debaryanum is the causative agent of:

 
 
 
 

855. In binomial system most of the words are:

 
 
 
 

856. Clostridium can:

 
 
 
 

857. How a fern differs from a moss?

 
 
 
 

858. In Gymnocarpeae the fruiting body is :

 
 
 
 

859. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Cellular slime mold is:

 
 
 
 

863. Male gametophyte of Selaginella is found:

 
 
 
 

864. The coralloid roots are :