Quiz_Random

1. In moss, conducting tissue is made up of

 
 
 
 

2. Cycas is :

 
 
 
 

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

 
 
 
 

4. Lichens reproduce by :

 
 
 
 

5. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

16. Ulothrix produces :

 
 
 
 

17. Bryophyta have a special character from other plants:

 
 
 
 

18. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

23. Which of the following are included in Tracheophyta?

 
 
 
 

24. The chloroplast in Ulothrix is :

 
 
 
 

25. Linnaeus is credited with introducing:

 
 
 
 

26. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

28. The vascular bundles of Cycas stem are :

 
 
 
 

29. Which group of algae have an incipient nucleus?

 
 
 
 

30. Nannandria are:

 
 
 
 

31. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

36. A gill of Agaricus:

 
 
 
 

37. In a diplontic life cycle:

 
 
 
 

38. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Diphtheria is caused by:

 
 
 
 

42. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. Cell walls of Gram-positive bacteria contain:

 
 
 
 

46. The word “sea weeds” is used for:

 
 
 
 

47. What is special feature of fern archegonia?

 
 
 
 

48. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

50. The coralloid roots are :

 
 
 
 

51. Milk is converted to curd by:

 
 
 
 

52. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

54. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

56. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

58. The Rhizopus is:

 
 
 
 

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

 
 
 
 

60. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Fern prothallus is:

 
 
 
 

64. Botulinum toxin effects:

 
 
 
 

65. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

67. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

69. Funaria is a Bryophyta because :

 
 
 
 

70. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

71. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

77. Which of the following are included in Tracheophyta?

 
 
 
 

78. What is mycorrhiza?

 
 
 
 

79. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

81. The source of litmus is :

 
 
 
 

82. Which is the correct statement about Selaginella?

 
 
 
 

83. The two conjugating gametangia of Rhizopus are:

 
 
 
 

84. Synzoospore is produced in:

 
 
 
 

85. In moss, stomata are found:

 
 
 
 

86. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

87. Yeast belongs to class:

 
 
 
 

88. Green plants are classified as :

 
 
 
 

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

 
 
 
 

90. The sexual reproductive organs in Rhizopus are:

 
 
 
 

91. Bacteria differ from viruses in being sensitive to:

 
 
 
 

92. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Which of the following is true for viruses?

 
 
 
 

96. Funaria is :

 
 
 
 

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

 
 
 
 

98. In moss, calyptra is formed from:

 
 
 
 

99. The spur of Pinus roxburghii has :

 
 
 
 

100. Infective part of virus was discovered by:

 
 
 
 

101. How a fern differs from a moss?

 
 
 
 

102. Photosynthetic bacteria have:

 
 
 
 

103. Spermatophyta are characterized by producing:

 
 
 
 

104. Genetic material of TMV is:

 
 
 
 

105. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

106. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

111. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

113. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

115. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

117. The seedless plants which possess vascular tissues are:

 
 
 
 

118. Saccharomyces ludwigii ascus produces:

 
 
 
 

119. Club moss is the common name of :

 
 
 
 

120. Select the wrong statement:

 
 
 
 

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

 
 
 
 

122. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

124. Male gametophyte of Selaginella is found:

 
 
 
 

125. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. The teeth of peristome of Funaria are :

 
 
 
 

130. White rust of crucifers is caused by:

 
 
 
 

131. The smallest bacterium is:

 
 
 
 

132. Fern plants are:

 
 
 
 

133. 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:

 
 
 
 

134. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

136. Special feature of pollen grains of Pinus is :

 
 
 
 

137. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

139. The chromosomal number in:

 
 
 
 

140. The order generally ends with:

 
 
 
 

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

 
 
 
 

142. The term stele was given by:

 
 
 
 

143. Meiosis in Ulothrix takes place:

 
 
 
 

144. 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:

 
 
 
 

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

 
 
 
 

146. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. In Gymnocarpeae the fruiting body is :

 
 
 
 

150. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

152. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

161. Pollination drop is:

 
 
 
 

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

 
 
 
 

163. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

169. Lichens are the indicator of pollution :

 
 
 
 

170. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

172. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

173. Centric discoid form of diatom is:

 
 
 
 

174.

 

175. Yeast grows more rapidly in:

 
 
 
 

176. True sexuality is not found in:

 
 
 
 

177. Which of the following statements is not correct?

 
 
 
 

178. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

180. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

182. Gram stain is used to:

 
 
 
 

183. Acellular slime mold is/are:

 
 
 
 

184. Heterospory is the production of:

 
 
 
 

185. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

187. The group algae possesses representatives belonging to kingdom:

 
 
 
 

188. Banana bunchy top is caused by :

 
 
 
 

189. In tracheophyta:

 
 
 
 

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

 
 
 
 

191. 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?

 
 
 
 

192. Anoxygenic photosynthesis occurs in:

 
 
 
 

193. Kuru, a human disease is caused by:

 
 
 
 

194. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

196. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Fairy ring is the name given to:

 
 
 
 

200. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

202. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

204. Penicillin is obtained from:

 
 
 
 

205. Saccharomyces is well known for:

 
 
 
 

206. The young leaves of Cycas have :

 
 
 
 

207. The sporangiophores in Rhizopus are:

 
 
 
 

208. 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?

 
 
 
 

209. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. Helotism word is used for the symbiosis between :

 
 
 
 

213. 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:

 
 
 
 

214. In a bacteriophage, DNA is present in:

 
 
 
 

215. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

217. Which causes red tide?

 
 
 
 

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

 
 
 
 

219. Black rust of wheat is caused by:

 
 
 
 

220. Majority of lichens are :

 
 
 
 

221. Protists which are diploid reproduce sexually by:

 
 
 
 

222. Ergot of rye is caused by:

 
 
 
 

223. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

225. Pasteur is famous for his:

 
 
 
 

226. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. The lambda phase is a:

 
 
 
 

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

 
 
 
 

234. Bacteriophage consists of:

 
 
 
 

235. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

237. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. The photosynthetic protists are:

 
 
 
 

243. The antherozoids of Funaria are :

 
 
 
 

244. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

246. Transfusion tissue is present in the leaflet of:

 
 
 
 

247. The fungi are mostly:

 
 
 
 

248. Photosynthetic protists belong to:

 
 
 
 

249. Embryo formation is not known in :

 
 
 
 

250. The leaves of Funaria are :

 
 
 
 

251. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

253. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

258. Most of the lichens are composed of :

 
 
 
 

259. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

260. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

262. Sexual reproduction of lichen is due to :

 
 
 
 

263. Leprosy is caused by:

 
 
 
 

264. The chief characteristic of class Ascomycetes is:

 
 
 
 

265. Which one of the following is a monocot?

 
 
 
 

266. The sporangia of Selaginella are attached:

 
 
 
 

267. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

269. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

271. Enteric bacteria are those bacteria that live:

 
 
 
 

272. Halophiles are the bacteria that require for growth:

 
 
 
 

273. In Pteris, the archegonia are present:

 
 
 
 

274. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

276. Most resistant spore in bacteria is:

 
 
 
 

277. Asexual reproductive body of Volvox is called:

 
 
 
 

278. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. Longest known virus is:

 
 
 
 

284. Aflatoxin is produced as a product in :

 
 
 
 

285. The rhizoids of Funaria are :

 
 
 
 

286. Ergot is obtained from :

 
 
 
 

287. How is moss different from fern?

 
 
 
 

288. 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?

 
 
 
 

289. Rhizoids of Riccia are :

 
 
 
 

290. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

292. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

294. Select the correct statement: (NEET 2016)

 
 
 
 

295. The mycelium of Rhizopus is:

 
 
 
 

296. Each chloroplast in Spirogyra bears :

 
 
 
 

297. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

298. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

300. Which have the largest antherozoid?

 
 
 
 

301. Which one of the following statement is wrong?

 
 
 
 

302. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

304. Which of the following does not contain chlorophyll?

 
 
 
 

305. Bacteria which are spherical are called:

 
 
 
 

306. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Psilotum is:

 
 
 
 

318. LSD is:

 
 
 
 

319. The microsporophylls on the cone of Cycas are :

 
 
 
 

320. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

322. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. Liverworts are included in :

 
 
 
 

327. Funaria are commonly found :

 
 
 
 

328. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

329. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

331. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

332. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

333. The fungi are usually:

 
 
 
 

334. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

337. Lichens are indicators of :

 
 
 
 

338. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

340. The sporangium of fern contains nearly:

 
 
 
 

341. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. The sporophyte of Riccia is represented by :

 
 
 
 

345. The archegonia of Selaginella are differentiated by:

 
 
 
 

346. Protozoans are considered animals because these are:

 
 
 
 

347. Which of the following statement is correct?

 
 
 
 

348. Seeds are characteristically found in:

 
 
 
 

349. 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:

 
 
 
 

350. Bivalved siliceous shell or frustule occur in:

 
 
 
 

351. Selaginella differs from Moss in having:

 
 
 
 

352. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

354. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

356. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

358. Pasteurized milk is:

 
 
 
 

359. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

361. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

363. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

365. Which class of Protozoa includes all parasitic forms?

 
 
 
 

366. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

367. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

368. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

370. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Reproduction in Rhizopus is:

 
 
 
 

375. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

377. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

381. The leafy fern plant represents the:

 
 
 
 

382. Downy mildew disease is caused by :

 
 
 
 

383. Discovery of penicillin was based on:

 
 
 
 

384. Which is an edible fungus?

 
 
 
 

385. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. In Funaria :

 
 
 
 

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

 
 
 
 

390. Virion refers to:

 
 
 
 

391. The root nodules of leguminous plants contain:

 
 
 
 

392. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

393. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

395. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

400. Funaria is :

 
 
 
 

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

 
 
 
 

402. Cocci types of bacteria are:

 
 
 
 

403. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

405. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. Small epidermal swellings due to infection are called :

 
 
 
 

413. Cycas is:

 
 
 
 

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

 
 
 
 

415. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

417. Which lichen is called Reindeer moss?

 
 
 
 

418. Plasmids are:

 
 
 
 

419. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. 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?

 
 
 
 

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

 
 
 
 

425. Water-net is the name of:

 
 
 
 

426. Mycoplasma contains:

 
 
 
 

427. The truncated cone of HIV consists of:

 
 
 
 

428. Fruiting body of lichens is :

 
 
 
 

429. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

431. Rhizopus and yeast are usually:

 
 
 
 

432. Proembryo in Pinus is :

 
 
 
 

433. The chief characteristic of bryophyta is that :

 
 
 
 

434. The first to isolate a plant virus was:

 
 
 
 

435. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

437. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. The chloroplast of Chlamydomonas are:

 
 
 
 

442. Spirogyra differs from moss protonema in having :

 
 
 
 

443. The fern plant is:

 
 
 
 

444. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

446. . Tapetum develops in:

 
 
 
 

447. Botulism is a:

 
 
 
 

448. The zoospores of Ulothrix are :

 
 
 
 

449. The alga, Spirogyra are found in :

 
 
 
 

450. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

452. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

454. Mycoplasma are sensitive to:

 
 
 
 

455. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Smallpox is caused by:

 
 
 
 

462. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

464. The mode of nutrition of bacteria is usually:

 
 
 
 

465. In Cycas:

 
 
 
 

466. Pinus is:

 
 
 
 

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

 
 
 
 

468. Heterotrichous habit means :

 
 
 
 

469. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

471. Seeds are characteristically found in :

 
 
 
 

472. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

474. Which of the following lichens is harmful?

 
 
 
 

475. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

477.

478. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

480. Pseudomycelium is found in:

 
 
 
 

481. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. Meristele of fern is:

 
 
 
 

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

 
 
 
 

492. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

494. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

496. Pollination in Cycas takes place by :

 
 
 
 

497. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

502. NBG of Lucknow is now named as:

 
 
 
 

503. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

505. Cryptogams include :

 
 
 
 

506. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

511. The fungi used as food are:

 
 
 
 

512. Chief constituents of bordeaux mixture are :

 
 
 
 

513. What are plasmids?

 
 
 
 

514. Ovary is absent in:

 
 
 
 

515. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

517. Wine turns sour because of:

 
 
 
 

518. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

520. 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:

 
 
 
 

521. Methanogens belong to:

 
 
 
 

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

 
 
 
 

523. In dinoflagellates, the two flagella are:

 
 
 
 

524. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

528. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

534. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

536. The central part of Funaria axis is :

 
 
 
 

537. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

538. The flagella of Chlamydomonas are:

 
 
 
 

539. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

540. In Pteris, the roots are:

 
 
 
 

541. Yeast is a source of:

 
 
 
 

542. Embryophyta includes :

 
 
 
 

543. Which is a fungicide?

 
 
 
 

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

 
 
 
 

545. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

547. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

550. 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:

 
 
 
 

551. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

553. Fern prothallus produces:

 
 
 
 

554. What is streptomycin?

 
 
 
 

555. Interferon is a:

 
 
 
 

556. Circular DNA is seen in:

 
 
 
 

557. Streptomycin is obtained from:

 
 
 
 

558. The gametophyte produced by apospory is :

 
 
 
 

559. The ferns are usually found:

 
 
 
 

560. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

568. Zoogametes are not found in:

 
 
 
 

569. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

573. Nitrogen-fixing bacteria may be located:

 
 
 
 

574. Total parasites belong to:

 
 
 
 

575. Reproduction in Cycas takes place by :

 
 
 
 

576. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

578. Placenta in fern is:

 
 
 
 

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

 
 
 
 

580. Red rot of sugarcane is caused by:

 
 
 
 

581. Most primitive kind of flower is represented by:

 
 
 
 

582. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Leaf spot of groundnut is caused by :

 
 
 
 

586. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

588. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Amoeba is a member of the phylum:

 
 
 
 

593. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

594. All archaebacteria lack:

 
 
 
 

595. Mostly type of zygospore in Ulothrix is:

 
 
 
 

596. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

598. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. Bacteria are found everywhere, except:

 
 
 
 

602. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. Bentham and Hooker placed gymnosperms:

 
 
 
 

608. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

610. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

612. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Saccharomyces is used in:

 
 
 
 

617. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

621. Facultative parasite is:

 
 
 
 

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

 
 
 
 

623. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

625. Most primitive embryophytes are placed in:

 
 
 
 

626. Viroids have:

 
 
 
 

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

 
 
 
 

628. Ethylene oxide is widely used to:

 
 
 
 

629. Ovules are not found enclosed in ovary in :

 
 
 
 

630. Which is an exception to cell theory?

 
 
 
 

631. The leaf of Cycas shows:

 
 
 
 

632. The gametophyte of fern is as:

 
 
 
 

633. Which is a redwood tree?

 
 
 
 

634.

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

 
 
 
 

636. Vascular cryptogam is the term used for :

 
 
 
 

637. Which is not true for Escherichia coli?

 
 
 
 

638. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

640. The largest alga is:

 
 
 
 

641. The sori in Dryopteris are found on:

 
 
 
 

642. The prothallus of fern is:

 
 
 
 

643. Generic name of mango is:

 
 
 
 

644. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

646. Which part of Riccia bears nurse cells?

 
 
 
 

647. Number of capsomeres forming capsid of TMV is:

 
 
 
 

648. Lichens are ecologically important because :

 
 
 
 

649. Antibiotic has been extracted from :

 
 
 
 

650. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

652. Endemic plants are characterised by their:

 
 
 
 

653. Which organisms are the oldest life forms?

 
 
 
 

654. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

660. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

662. Heterocysts are found in :

 
 
 
 

663. The tallest moss in the world is :

 
 
 
 

664. In Herpes virus DNA is:

 
 
 
 

665. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

666. What is a vector?

 
 
 
 

667. Spores of which plants have chloroplast:

 
 
 
 

668. Mycoplasmas are not viruses in nature because:

 
 
 
 

669. To which country Antony van Leeuwenhoek belong?

 
 
 
 

670. Ovary is absent in :

 
 
 
 

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

 
 
 
 

672. Siphonogamy is found in:

 
 
 
 

673. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. Sexual reproduction in Rhizopus is by:

 
 
 
 

678. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

685. Bacteria growing on synthetic medium are called:

 
 
 
 

686. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

688. Desired type of Cycas can be grown by:

 
 
 
 

689. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

691. Roots are absent in :

 
 
 
 

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

 
 
 
 

693. Viruses have:

 
 
 
 

694. John Hutchinson divided dicots into two divisions:

 
 
 
 

695. Some biologists have used the term Mycetozoa for:

 
 
 
 

696. Which is absent from the xylem of Cycas?

 
 
 
 

697. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

699. Where does meiosis occur in yeast?

 
 
 
 

700. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. Germ theory of disease was proposed by:

 
 
 
 

704. The DNA of E coli is:

 
 
 
 

705. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

710. Bacteriophages have been used as:

 
 
 
 

711. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

712. Common phycobiont in a lichen is :

 
 
 
 

713. Heterospory and ligulate leaves are a feature of:

 
 
 
 

714. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

716. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

718. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

720. Clostridium can:

 
 
 
 

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

 
 
 
 

722. The tree fern is:

 
 
 
 

723. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

725. Male gametes in Dryopteris are:

 
 
 
 

726. Simple polyembryony is found in :

 
 
 
 

727. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

733. What is the role of nitrifying bacteria?

 
 
 
 

734. Acetobacter is useful in:

 
 
 
 

735. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. Standard size of a herbarium sheet is:

 
 
 
 

739. Reserve food in Euglena is:

 
 
 
 

740. The Rhizopus gametes are formed in:

 
 
 
 

741. Which of the following is a parasitic algae?

 
 
 
 

742. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

744. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

746. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Which of the following applies to Selaginella?

 
 
 
 

750. Which of the following is true for Selaginella?

 
 
 
 

751. In Cycas which structure is equivalent to stamen?

 
 
 
 

752.

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

 
 
 
 

754. Citrus canker is caused by:

 
 
 
 

755. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. The megaspore of Selaginella on germination produces:

 
 
 
 

762. Which fixes atmospheric nitrogen?

 
 
 
 

763. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

765. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

771. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. All protozoans possess:

 
 
 
 

777. Water bloom is generally caused by :

 
 
 
 

778. Among the algae kelps are :

 
 
 
 

779. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

782. An alga which is rich in proteins:

 
 
 
 

783. Photoautotrophic bacteria have:

 
 
 
 

784. Winged seeds are found in :

 
 
 
 

785. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Fruits are not found in:

 
 
 
 

792. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

794. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

796. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

798. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

808. The archegonia in Selaginella develop on:

 
 
 
 

809. Little leaf disease of Brinjal is caused by:

 
 
 
 

810. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

812. The megasporangium of Selaginella is:

 
 
 
 

813. In angiosperms double fertilization represents:

 
 
 
 

814. Cycas is different from mango in :

 
 
 
 

815. Germination of the seed of Pinus is :

 
 
 
 

816. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

818. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

820. Bacteria were first discovered by:

 
 
 
 

821. Indusium in Dryopteris is:

 
 
 
 

822. Cycas revoluta is widely grown as :

 
 
 
 

823. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

825. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

827. In Funaria, calyptra is derived from :

 
 
 
 

828. Triple antigen injection or vaccine are for:

 
 
 
 

829. Cleavage polyembryony is found in :

 
 
 
 

830. Lichen show :

 
 
 
 

831. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

834. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. The prothallus of fern represents the plant:

 
 
 
 

841. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. Who named prion?

 
 
 
 

846. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

853. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

855. Green plants are classified as:

 
 
 
 

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

 
 
 
 

857. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. To which class Riccia belongs :

 
 
 
 

861. The spermatozoids of Cycas are :

 
 
 
 

862. Redness of red sea is due to :

 
 
 
 

863. Broad spectrum antibiotic is, which:

 
 
 
 

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