Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Rhizopus and yeast are usually:

 
 
 
 

5. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. John Hutchinson divided dicots into two divisions:

 
 
 
 

9. Lichens form the first community in

 
 
 
 

10. Which is a fungicide?

 
 
 
 

11. Embryophyta includes:

 
 
 
 

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

 
 
 
 

13. Embryophyta includes :

 
 
 
 

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

 
 
 
 

15. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. Ginkgo biloba is a:

 
 
 
 

24. 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?

 
 
 
 

25. Protistan algae obtain their food as:

 
 
 
 

26. The Rhizopus gametes are formed in:

 
 
 
 

27. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

29. 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:

 
 
 
 

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

 
 
 
 

31. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. Fruits are not found in :

 
 
 
 

35. Sporophyte of Funaria is :

 
 
 
 

36. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

38. Which of the following is a parasitic algae?

 
 
 
 

39. In Pteris, the roots are:

 
 
 
 

40. Liverworts are included in :

 
 
 
 

41. The plants of Funaria grow :

 
 
 
 

42. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

44. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

46. Usually, bacteria reproduce by:

 
 
 
 

47. How a fern differs from a moss?

 
 
 
 

48. Rice, pea, potato are :

 
 
 
 

49. The gametophyte of moss has distinct phases :

 
 
 
 

50. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

51. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

57. Who discovered streptomycin?

 
 
 
 

58. Late blight of potato is caused by:

 
 
 
 

59. Majority of lichens are :

 
 
 
 

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

 
 
 
 

61. Gram stain is used to:

 
 
 
 

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

 
 
 
 

63. What are Cyanobacteria?

 
 
 
 

64. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

65.

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

 
 
 
 

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

 
 
 
 

68. Lichens reproduce by :

 
 
 
 

69. Water-net is the name of:

 
 
 
 

70. Pinus is:

 
 
 
 

71. Yeast grows more rapidly in:

 
 
 
 

72. The megaspore of Selaginella on germination produces:

 
 
 
 

73. Fern prothallus produces:

 
 
 
 

74. Pollination in Pinus is :

 
 
 
 

75. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

81. LSD is:

 
 
 
 

82. The largest alga is:

 
 
 
 

83. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

85. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Isomorphic type alternation of generation is found in:

 
 
 
 

89. Black rust of wheat is caused by:

 
 
 
 

90. Which causes red tide?

 
 
 
 

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

 
 
 
 

92. Citrus canker is caused by :

 
 
 
 

93. The central part of Funaria axis is :

 
 
 
 

94. Select the correct statement: (NEET 2016)

 
 
 
 

95. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

103. Linnaeus is credited with introducing:

 
 
 
 

104. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

108. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

110. In moss, reduction division occurs in :

 
 
 
 

111. The gametophyte of fern bears:

 
 
 
 

112. Number of capsomeres forming capsid of TMV is:

 
 
 
 

113. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

115. The role of meiosis is for:

 
 
 
 

116. Parmelia belongs to :

 
 
 
 

117. Chemosynthetic bacteria are:

 
 
 
 

118. 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:

 
 
 
 

119. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Most primitive group of vascular plants are:

 
 
 
 

123. Red rot of sugarcane is caused by:

 
 
 
 

124. Viruses are considered to be:

 
 
 
 

125. All archaebacteria lack:

 
 
 
 

126. Iodine is obtained from:

 
 
 
 

127. Halophiles are the bacteria that require for growth:

 
 
 
 

128. Simple polyembryony is found in :

 
 
 
 

129. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

131. The chloroplast of Chlamydomonas are:

 
 
 
 

132. Mycoplasma contains:

 
 
 
 

133. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

135. Lichens reproduce by :

 
 
 
 

136. Nannandria are:

 
 
 
 

137. Which of the following have algal zone?

 
 
 
 

138. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. The DNA of E coli is:

 
 
 
 

142. All protozoans possess:

 
 
 
 

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

 
 
 
 

144. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Each chloroplast in Spirogyra bears :

 
 
 
 

159. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

167. Which is a redwood tree?

 
 
 
 

168. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

170. The tree fern is:

 
 
 
 

171. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

173. Bentham and Hooker placed gymnosperms:

 
 
 
 

174. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

176. 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:

 
 
 
 

177. The middle sterile part of capsule is called:

 
 
 
 

178. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

180. Saccharomyces is well known for:

 
 
 
 

181. Red rot of sugarcane is caused by :

 
 
 
 

182. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

192. Which condition is found in Cycas?

 
 
 
 

193. The term stele was given by:

 
 
 
 

194. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Placenta in fern is:

 
 
 
 

198. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

200. Lichens are indicators of :

 
 
 
 

201. Bacteria growing on synthetic medium are called:

 
 
 
 

202. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

204. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

206. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

208. Meristele of fern is:

 
 
 
 

209. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

211. The zoospores of Ulothrix are :

 
 
 
 

212. The coralloid roots are :

 
 
 
 

213.

 

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

 
 
 
 

215. Cleavage polyembryony is found in :

 
 
 
 

216. The spur of Pinus roxburghii has :

 
 
 
 

217. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

225. Pasteur is famous for his:

 
 
 
 

226. Viruses have:

 
 
 
 

227. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Which of the following statement is correct?

 
 
 
 

231. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

233. What is mycorrhiza?

 
 
 
 

234. Black rust of wheat is caused by:

 
 
 
 

235. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Ulothrix produces :

 
 
 
 

239. Spirogyra represents the :

 
 
 
 

240. 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?

 
 
 
 

241. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

243. Fern phloem lacks:

 
 
 
 

244. The most primitive vascular plants is:

 
 
 
 

245. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

247. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

249. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

254. The spermatozoids of Cycas are :

 
 
 
 

255. Heterosporous pteridophytes always form:

 
 
 
 

256. Streptomyces falls under:

 
 
 
 

257. Chemosynthetic bacteria are:

 
 
 
 

258. The sporangiophores in Rhizopus are:

 
 
 
 

259. In Cycas the fertilization is:

 
 
 
 

260. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

268. Tautonyms are illegitimate in:

 
 
 
 

269. Common phycobiont in a lichen is :

 
 
 
 

270. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. Which of the following is a heterosporous pteridophyte?

 
 
 
 

280. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

282. Winged seeds are found in :

 
 
 
 

283. Ergot is obtained from :

 
 
 
 

284. True sexuality is not found in:

 
 
 
 

285. Citrus canker is caused by:

 
 
 
 

286. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. Cyathia is characterized by:

 
 
 
 

290. Ectocarpus produces:

 
 
 
 

291. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

298. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

302. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Seeds are characteristically found in :

 
 
 
 

309. Gymnosperms could also be called as:

 
 
 
 

310. The disease apple scab is caused by:

 
 
 
 

311. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

313. Cycas is different from mango in :

 
 
 
 

314. Woody climbers are known as :

 
 
 
 

315. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

317. Polystelic condition is found in:

 
 
 
 

318. Rhizoids of Riccia are :

 
 
 
 

319. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

324. Pinus microsporophyll bears:

 
 
 
 

325. Which one of the following statement is wrong?

 
 
 
 

326. Male gametes in Dryopteris are:

 
 
 
 

327. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

328. The Rhizopus is:

 
 
 
 

329. The sporangia of Selaginella are attached:

 
 
 
 

330. The leaf of Cycas shows:

 
 
 
 

331. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

334. Who among the following discovered virus?

 
 
 
 

335. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. Photoautotrophic bacteria have:

 
 
 
 

345. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

347. Kuru, a human disease is caused by:

 
 
 
 

348. Ovary is absent in:

 
 
 
 

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

 
 
 
 

350. Meiosis in Ulothrix takes place:

 
 
 
 

351. Embryo formation is not known in :

 
 
 
 

352. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

354. To which country Antony van Leeuwenhoek belong?

 
 
 
 

355. Yeast is a source of:

 
 
 
 

356. Desired type of Cycas can be grown by:

 
 
 
 

357. Mycoplasmas are not viruses in nature because:

 
 
 
 

358. Which of the following lichens is harmful?

 
 
 
 

359. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

361. Which of the following applies to Selaginella?

 
 
 
 

362. Which bacteria convert nitrate into nitrogen?

 
 
 
 

363. Roots are absent in :

 
 
 
 

364. The sporophyte of Riccia is :

 
 
 
 

365. Bacteriophages have been used as:

 
 
 
 

366. Green plants are classified as:

 
 
 
 

367. Leprosy is caused by:

 
 
 
 

368. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

370. Mycoplasma is different from bacteria due to:

 
 
 
 

371. Plasmids are:

 
 
 
 

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

 
 
 
 

373. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

375. The photosynthetic protists are:

 
 
 
 

376. Select the wrong statement:

 
 
 
 

377. In Funaria :

 
 
 
 

378. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

380. Which group of algae have an incipient nucleus?

 
 
 
 

381. The male gametes of Pinus are :

 
 
 
 

382. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. Fairy ring is the name given to:

 
 
 
 

386. Protozoans are considered animals because these are:

 
 
 
 

387. The first to isolate a plant virus was:

 
 
 
 

388. The source of litmus is :

 
 
 
 

389. The gametophyte of fern is as:

 
 
 
 

390. The vascular bundles of Cycas stem are :

 
 
 
 

391. Viroids have:

 
 
 
 

392. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. What is a vector?

 
 
 
 

396. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. Climbers are found in genus:

 
 
 
 

400. Smut of maize is caused by :

 
 
 
 

401. Mostly type of zygospore in Ulothrix is:

 
 
 
 

402. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

404. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

406. The prothallus of fern represents the plant:

 
 
 
 

407. A gill of Agaricus:

 
 
 
 

408. Which of the following statements is not correct?

 
 
 
 

409. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

411. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. Yeast belongs to class:

 
 
 
 

415. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

417. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

419. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

421. Lichens are ecologically important because :

 
 
 
 

422. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Lichens are pioneers of vegetation in a :

 
 
 
 

426. Most of the algae are :

 
 
 
 

427. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

428. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

431. Ovules are not found enclosed in ovary in :

 
 
 
 

432. Oswald Tippo’s classification was based on :

 
 
 
 

433. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

435. The zygospore in Rhizopus on germination forms:

 
 
 
 

436. The genetic material of poxvirus is:

 
 
 
 

437. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

439. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

445. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

446. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

451. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

453. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. In moss, stomata are found:

 
 
 
 

459. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Etiology includes the study of :

 
 
 
 

467. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. Pythium debaryanum is the causative agent of:

 
 
 
 

471. In binomial system most of the words are:

 
 
 
 

472. The largest known bacterium is:

 
 
 
 

473. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

474. Endemic plants are characterised by their:

 
 
 
 

475. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

477. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

479. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

481. The tallest moss in the world is :

 
 
 
 

482. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Which is absent from the xylem of Cycas?

 
 
 
 

486. Photosynthetic bacteria have:

 
 
 
 

487. The leaves of Funaria are :

 
 
 
 

488. Infective part of virus was discovered by:

 
 
 
 

489. Interferon is a:

 
 
 
 

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

 
 
 
 

491. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. Bacteria are considered to be plants because they:

 
 
 
 

497. Which organisms are the oldest life forms?

 
 
 
 

498. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

500. An Hfr bacterium is one that contains:

 
 
 
 

501. In moss, peristomial teeth are:

 
 
 
 

502. The alga, Spirogyra are found in :

 
 
 
 

503. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

505. In moss, calyptra is formed from:

 
 
 
 

506. The development of sporangium in Selaginella is:

 
 
 
 

507. Pollination in Cycas takes place by :

 
 
 
 

508. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

510. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. Iodine is obtained from :

 
 
 
 

517. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

519. The fungi are usually:

 
 
 
 

520. In Cycas which structure is equivalent to stamen?

 
 
 
 

521. Bacteria were first discovered by:

 
 
 
 

522. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

524. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

526. Bacteriophage consists of:

 
 
 
 

527. How is moss different from fern?

 
 
 
 

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

 
 
 
 

529. Spermatophyta are characterized by producing:

 
 
 
 

530. Enteric bacteria are those bacteria that live:

 
 
 
 

531. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

533. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

535. Viruses are commonly transmitted in plants through:

 
 
 
 

536. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

538. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

539. TMV was isolated in crystalline form by:

 
 
 
 

540. Banana bunchy top is caused by :

 
 
 
 

541. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

545. Which is an exception to cell theory?

 
 
 
 

546. To which class Riccia belongs :

 
 
 
 

547. In Herpes virus DNA is:

 
 
 
 

548. Total parasites belong to:

 
 
 
 

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

 
 
 
 

550. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

552. Asexual reproductive body of Volvox is called:

 
 
 
 

553. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

555. E coli is a:

 
 
 
 

556. Which of the following shows heterotrichous habit?

 
 
 
 

557. Which lichen is called Reindeer moss?

 
 
 
 

558. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

560. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. In Cycas:

 
 
 
 

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

 
 
 
 

566. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

568. In moss, conducting tissue is made up of

 
 
 
 

569. Cellular slime mold is:

 
 
 
 

570. Sexual reproduction in Rhizopus is by:

 
 
 
 

571. The chromosomal number in:

 
 
 
 

572. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

574. Winged pollen grains are found in :

 
 
 
 

575. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

581. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

583. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

585. Which of the following is a monocot?

 
 
 
 

586. Cycas is :

 
 
 
 

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

 
 
 
 

588. The leaves of Funaria are :

 
 
 
 

589. Reproduction in Cycas takes place by :

 
 
 
 

590. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. Germ theory of disease was proposed by:

 
 
 
 

594. Facultative parasite is:

 
 
 
 

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

 
 
 
 

596. Vegetative reproduction in Cycas is by means of :

 
 
 
 

597. Leaf spot of groundnut is caused by :

 
 
 
 

598. Saccharomyces ludwigii ascus produces:

 
 
 
 

599. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

601. 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:

 
 
 
 

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

 
 
 
 

603. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

605. The sori in Dryopteris are found on:

 
 
 
 

606. Mixed cropping helps :

 
 
 
 

607. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

609. The truncated cone of HIV consists of:

 
 
 
 

610. Genetic material of TMV is:

 
 
 
 

611.

612. The disease symptom necrosis refers to :

 
 
 
 

613. Most appropriate word for protozoans is:

 
 
 
 

614. Red rot of sugarcane is caused by :

 
 
 
 

615. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

617. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

619. The lambda phase is a:

 
 
 
 

620. Nitrifying bacteria play an important role by converting:

 
 
 
 

621. 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:

 
 
 
 

622. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. Pinus gerardiana is :

 
 
 
 

632. An alga which is rich in proteins:

 
 
 
 

633. Cryptogams include :

 
 
 
 

634. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

636. Green plants are classified as :

 
 
 
 

637. The gametophyte produced by apospory is :

 
 
 
 

638. Fruits are not found in:

 
 
 
 

639. Zoogametes are not found in:

 
 
 
 

640. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

641. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

643. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

646. The sexual reproductive organs in Rhizopus are:

 
 
 
 

647. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. In Gymnosperms endosperm is a:

 
 
 
 

653. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

655. Which among the following is a shrub?

 
 
 
 

656. Antibiotic has been extracted from :

 
 
 
 

657. The root nodules of leguminous plants contain:

 
 
 
 

658. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Most primitive kind of flower is represented by:

 
 
 
 

665. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

667. Lichens show :

 
 
 
 

668. Centric discoid form of diatom is:

 
 
 
 

669. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

670. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

672. Quarantine regulations are concerned with:

 
 
 
 

673. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Botulism is a:

 
 
 
 

677. Rhizopus belongs to:

 
 
 
 

678. Wine turns sour because of:

 
 
 
 

679. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

681. Most primitive embryophytes are placed in:

 
 
 
 

682. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Pteridophyta are also called:

 
 
 
 

687. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. Fern prothallus is:

 
 
 
 

691. Who discovered heterothallism in fungi?

 
 
 
 

692. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

694. Heterotrichous habit means :

 
 
 
 

695. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

697. Which part of Riccia bears nurse cells?

 
 
 
 

698. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Cycas is similar to a mustard plant :

 
 
 
 

703.

704. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

705. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

706. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

708. Vascular cryptogam is the term used for :

 
 
 
 

709. Standard size of a herbarium sheet is:

 
 
 
 

710. Ovary is absent in :

 
 
 
 

711. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

717. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Vascular cryptogams is the term used for:

 
 
 
 

721. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

723. The phloem of vascular system of Cycas is :

 
 
 
 

724. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. Pasteurized milk is:

 
 
 
 

728. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

730. The group algae possesses representatives belonging to kingdom:

 
 
 
 

731. Most common type of conjugation in Spirogyra is :

 
 
 
 

732. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

734. 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?

 
 
 
 

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

 
 
 
 

736. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Lichen show :

 
 
 
 

740. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. In tracheophyta:

 
 
 
 

746. Absorptive nutrition is:

 
 
 
 

747. The similarity between cyanobacteria and bacteria:

 
 
 
 

748. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

750. Cap cells are found in the filament of:

 
 
 
 

751. The ascus of yeast contains:

 
 
 
 

752. Vascular tissue is found in :

 
 
 
 

753. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Funaria is :

 
 
 
 

762. Metulae are found in:

 
 
 
 

763. Pneumonia is caused by:

 
 
 
 

764. Some biologists have used the term Mycetozoa for:

 
 
 
 

765. Who named prion?

 
 
 
 

766. Bacteria are found everywhere, except:

 
 
 
 

767. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. The order generally ends with:

 
 
 
 

771. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

773. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Broad spectrum antibiotic is, which:

 
 
 
 

777. Clostridium can:

 
 
 
 

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

 
 
 
 

779. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

780. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

781. 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:

 
 
 
 

782. Coenogamete is found in:

 
 
 
 

783. Which of the following have a prokaryotic cell?

 
 
 
 

784. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

786. Circular DNA is seen in:

 
 
 
 

787. Funaria is a Bryophyta because :

 
 
 
 

788. The nucleus of bacteria is:

 
 
 
 

789. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. Funaria is :

 
 
 
 

793. Rhizophore of Selaginella is:

 
 
 
 

794. Typhoid in man is caused by:

 
 
 
 

795. In moss, sporogenous tissue arises from:

 
 
 
 

796. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

798. Downy mildew disease is caused by :

 
 
 
 

799. Little leaf disease of Brinjal is caused by:

 
 
 
 

800. Triple antigen injection or vaccine are for:

 
 
 
 

801. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. Choose the correct statement about Spirogyra:

 
 
 
 

807. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

809. Penicillin is obtained from:

 
 
 
 

810. The roots of Cycas are :

 
 
 
 

811. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

813. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Club moss and Peat moss belong to:

 
 
 
 

817. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

819. The two conjugating gametangia of Rhizopus are:

 
 
 
 

820. Male gametophyte of Selaginella is found:

 
 
 
 

821. Which of the following is sago palm?

 
 
 
 

822. Pythium debaryanum is the causative agent of:

 
 
 
 

823. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

825. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

829. Synzoospore is produced in:

 
 
 
 

830. Which one of the following is a monocot?

 
 
 
 

831. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

833. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

843. Longest known virus is:

 
 
 
 

844. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

846. Selaginella differs from Moss in having:

 
 
 
 

847. Which is the nuclear material in bacteria?

 
 
 
 

848. Heterocysts are found in :

 
 
 
 

849. What are plasmids?

 
 
 
 

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

 
 
 
 

851. Psilotum is:

 
 
 
 

852. Mycoplasma are:

 
 
 
 

853. Azolla and Salvinia both are:

 
 
 
 

854. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

855. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

857. Oswald Tippo’s classification is:

 
 
 
 

858. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

860. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

862. Botulinum toxin effects:

 
 
 
 

863. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

864. Pseudomycelium is found in: