Quiz_Random

1. The seedless plants which possess vascular tissues are:

 
 
 
 

2. Funaria are commonly found :

 
 
 
 

3. In Gymnocarpeae the fruiting body is :

 
 
 
 

4. The sporangiophores in Rhizopus are:

 
 
 
 

5. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

7. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. The two conjugating gametangia of Rhizopus are:

 
 
 
 

19. The photosynthetic protists are:

 
 
 
 

20. Some diseases caused by bacteria are:

 
 
 
 

21. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

23. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. The fern plant is:

 
 
 
 

32. Fern plants are:

 
 
 
 

33. Fern prothallus produces:

 
 
 
 

34. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

36. Reserve food in Euglena is:

 
 
 
 

37. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Saccharomyces ludwigii ascus produces:

 
 
 
 

41. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

42. Gymnosperms could also be called as:

 
 
 
 

43. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

45. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Acellular slime mold is/are:

 
 
 
 

50. Bryophyta have a special character from other plants:

 
 
 
 

51. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

53. Mycoplasma are:

 
 
 
 

54. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

56. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Spirogyra differs from moss protonema in having :

 
 
 
 

64. A gill of Agaricus:

 
 
 
 

65. Special feature of pollen grains of Pinus is :

 
 
 
 

66. Ovules are not found enclosed in ovary in :

 
 
 
 

67. The zoospores of Ulothrix are :

 
 
 
 

68. Yeast grows more rapidly in:

 
 
 
 

69. Mixed cropping helps :

 
 
 
 

70. In angiosperms double fertilization represents:

 
 
 
 

71. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Gametophyte is the main plant body in :

 
 
 
 

76. Endemic plants are characterised by their:

 
 
 
 

77. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

79. The tree fern is:

 
 
 
 

80. Agar-agar is obtained from:

 
 
 
 

81. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

83. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

85. Mucilaginous canals in Cycas are found in :

 
 
 
 

86. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

91. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. NBG of Lucknow is now named as:

 
 
 
 

95. 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:

 
 
 
 

96. Which condition is found in Cycas?

 
 
 
 

97. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

99. Liverworts are included in :

 
 
 
 

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

 
 
 
 

101. 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?

 
 
 
 

102. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

104. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

106. Botulinum toxin effects:

 
 
 
 

107. To which class Riccia belongs :

 
 
 
 

108. Mycoplasma is different from bacteria due to:

 
 
 
 

109. Lichens show :

 
 
 
 

110. Cycas is:

 
 
 
 

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

 
 
 
 

112. 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:

 
 
 
 

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

 
 
 
 

114. The source of litmus is :

 
 
 
 

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

 
 
 
 

116. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

118. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

120. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

122. The gametophyte produced by apospory is :

 
 
 
 

123. Climbers are found in genus:

 
 
 
 

124. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. The leaf of Cycas shows:

 
 
 
 

128. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

130. How is moss different from fern?

 
 
 
 

131. Bivalved siliceous shell or frustule occur in:

 
 
 
 

132. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

134. Fern phloem lacks:

 
 
 
 

135. Cycas is different from mango in :

 
 
 
 

136. Cryptogams include :

 
 
 
 

137. Which of the following is a heterosporous pteridophyte?

 
 
 
 

138. Bacteria which are spherical are called:

 
 
 
 

139. Woody climbers are known as :

 
 
 
 

140. Nitrifying bacteria play an important role by converting:

 
 
 
 

141. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

143. Ethylene oxide is widely used to:

 
 
 
 

144. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

146. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Polystelic condition is found in:

 
 
 
 

150. Quarantine regulations are concerned with:

 
 
 
 

151. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

153. Spores of which plants have chloroplast:

 
 
 
 

154. Which statement is wrong in regard to bacteria?

 
 
 
 

155. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Sporophyte of Funaria is :

 
 
 
 

159. Pteridophytes are also known as :

 
 
 
 

160. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

162. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

164. What is special feature of fern archegonia?

 
 
 
 

165. Plasmids are:

 
 
 
 

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

 
 
 
 

167. Botulism is a:

 
 
 
 

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

 
 
 
 

169. Red rot of sugarcane is caused by :

 
 
 
 

170. Asexual reproductive body of Volvox is called:

 
 
 
 

171. In Funaria :

 
 
 
 

172. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

175. Ovules are not found enclosed in ovary in :

 
 
 
 

176. The flagella of Chlamydomonas are:

 
 
 
 

177. The archegonia in Selaginella develop on:

 
 
 
 

178. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

182. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. In Selaginella, the microsporangia are:

 
 
 
 

186. The fungi that grow on wood are called:

 
 
 
 

187. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

189. The development of sporangium in Selaginella is:

 
 
 
 

190. Saccharomyces is well known for:

 
 
 
 

191. Male gametophyte of Selaginella is found:

 
 
 
 

192. Some biologists have used the term Mycetozoa for:

 
 
 
 

193. Which one of the following is a monocot?

 
 
 
 

194. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

196. Which of the following is true for viruses?

 
 
 
 

197. Which is a redwood tree?

 
 
 
 

198. Male gametes in Dryopteris are:

 
 
 
 

199. Ginkgo biloba is a:

 
 
 
 

200. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

202. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

204. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. The ferns are usually found:

 
 
 
 

208. Which group of algae have an incipient nucleus?

 
 
 
 

209. The chief characteristic of bryophyta is that :

 
 
 
 

210. Embryo formation is not known in :

 
 
 
 

211. Psilotum is:

 
 
 
 

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

 
 
 
 

213.

214. Pinus microsporophyll bears:

 
 
 
 

215. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

218. Spirogyra represents the :

 
 
 
 

219. Heterotrichous habit means :

 
 
 
 

220. Which is an edible fungus?

 
 
 
 

221.

222. LSD is:

 
 
 
 

223. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. The antherozoids of Funaria are :

 
 
 
 

228. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

231. Germ theory of disease was proposed by:

 
 
 
 

232. Fern prothallus is:

 
 
 
 

233. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

235. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

237. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

240. Yeast belongs to class:

 
 
 
 

241. Each chloroplast in Spirogyra bears :

 
 
 
 

242. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

247. Pythium debaryanum is the causative agent of:

 
 
 
 

248. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Azolla and Salvinia both are:

 
 
 
 

252. Cocci types of bacteria are:

 
 
 
 

253. What is absent in Deuteromycetes?

 
 
 
 

254. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Cellular slime mold is:

 
 
 
 

258. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Viruses have:

 
 
 
 

263. 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:

 
 
 
 

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

 
 
 
 

265. The chromosomal number in:

 
 
 
 

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

 
 
 
 

267. First animal pathogenic virus was discovered by:

 
 
 
 

268. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

270. Lichen show :

 
 
 
 

271. Most primitive group of vascular plants are:

 
 
 
 

272. Selaginella differs from Moss in having:

 
 
 
 

273. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

274. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. Which of the following have algal zone?

 
 
 
 

283. Protists which are diploid reproduce sexually by:

 
 
 
 

284. Which part of Riccia bears nurse cells?

 
 
 
 

285. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

287. All algae have:

 
 
 
 

288. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

293. Vascular cryptogam is the term used for :

 
 
 
 

294. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. The roots of Cycas are :

 
 
 
 

300. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

302. In Cycas the fertilization is:

 
 
 
 

303. Who named prion?

 
 
 
 

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

 
 
 
 

305. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

307. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

309. Penicillin was discovered by:

 
 
 
 

310. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. The most primitive vascular plants is:

 
 
 
 

314. The sori in Dryopteris are found on:

 
 
 
 

315. Vascular tissue is found in :

 
 
 
 

316. Who discovered heterothallism in fungi?

 
 
 
 

317. Enzymes are absent in:

 
 
 
 

318. Pasteur is famous for his:

 
 
 
 

319. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. The sporangia of Selaginella are attached:

 
 
 
 

331. Interferon is a:

 
 
 
 

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

 
 
 
 

333. Choose the correct statement about Spirogyra:

 
 
 
 

334. Bryophyta have been placed in cryptogams because:

 
 
 
 

335. The prothallus of fern is:

 
 
 
 

336. The sexual reproductive organs in Rhizopus are:

 
 
 
 

337. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

339. Among the algae kelps are :

 
 
 
 

340. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

342. Most of the algae are :

 
 
 
 

343. Bacteria are considered to be plants because they:

 
 
 
 

344. The similarity between cyanobacteria and bacteria:

 
 
 
 

345. The largest known bacterium is:

 
 
 
 

346. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

348. Pollination drop is:

 
 
 
 

349. Select the correct statement: (NEET 2016)

 
 
 
 

350. The sporophyte of Riccia is :

 
 
 
 

351. Green plants are classified as:

 
 
 
 

352. Heterocysts are found in :

 
 
 
 

353. Which among the following is a shrub?

 
 
 
 

354. The young leaves of Cycas have :

 
 
 
 

355. Metulae are found in:

 
 
 
 

356. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

358. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. Water bloom is generally caused by :

 
 
 
 

363. Sometimes the bacterial cell is enclosed in:

 
 
 
 

364. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. Helotism word is used for the symbiosis between :

 
 
 
 

369. Milk is converted to curd by:

 
 
 
 

370. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

372. Chief constituents of bordeaux mixture are :

 
 
 
 

373. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

375. Amoeba is a member of the phylum:

 
 
 
 

376. The first to isolate a plant virus was:

 
 
 
 

377. Standard size of a herbarium sheet is:

 
 
 
 

378. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

380. Detailed study of bacteriophage was made by:

 
 
 
 

381. Which fixes atmospheric nitrogen?

 
 
 
 

382. Ovary is absent in:

 
 
 
 

383. 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:

 
 
 
 

384. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

386. Embryophyta includes :

 
 
 
 

387. Broad spectrum antibiotic is, which:

 
 
 
 

388. The most important property of yeast is:

 
 
 
 

389. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

392. Chemosynthetic bacteria are:

 
 
 
 

393. Bacteriophage consists of:

 
 
 
 

394. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. One of the distinctive feature of Spirogyra is :

 
 
 
 

398. All archaebacteria lack:

 
 
 
 

399. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

400. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

403. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

410. The DNA of E coli is:

 
 
 
 

411. Aflatoxin is produced by:

 
 
 
 

412. In dinoflagellates, the two flagella are:

 
 
 
 

413. The upper region of moss capsule is :

 
 
 
 

414. Which is the nuclear material in bacteria?

 
 
 
 

415. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

417. Disease resistant plant varieties can be produced by :

 
 
 
 

418. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. In moss, stomata are found:

 
 
 
 

422. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Smut of maize is caused by :

 
 
 
 

433. The megaspore of Selaginella on germination produces:

 
 
 
 

434. The mycelium of Rhizopus is:

 
 
 
 

435. The largest alga is:

 
 
 
 

436. Embryophyta includes:

 
 
 
 

437. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. Club moss is the common name of :

 
 
 
 

444. Cyathia is characterized by:

 
 
 
 

445. The Rhizopus is:

 
 
 
 

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

 
 
 
 

447. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

449. Infective part of virus was discovered by:

 
 
 
 

450. Diphtheria is caused by:

 
 
 
 

451. Cap cells are found in the filament of:

 
 
 
 

452. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

454. Mycoplasma contains:

 
 
 
 

455. 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?

 
 
 
 

456. Most of the lichens are composed of :

 
 
 
 

457. Bacteria differ from viruses in being sensitive to:

 
 
 
 

458. The ascus of yeast contains:

 
 
 
 

459. The zygospore in Rhizopus on germination forms:

 
 
 
 

460. Pinus gerardiana is :

 
 
 
 

461. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

464. Which of the following are absent in Mycoplasma?

 
 
 
 

465. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

466. Antibiotics cure the disease by:

 
 
 
 

467.

 

468. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. Ovary is absent in :

 
 
 
 

473. What is the role of nitrifying bacteria?

 
 
 
 

474. The lichens growing on rocks are called :

 
 
 
 

475. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Which of the following are included in Tracheophyta?

 
 
 
 

485. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

487. Isomorphic type alternation of generation is found in:

 
 
 
 

488. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

490. Funaria can be differentiated from Cycas :

 
 
 
 

491. Water-net is the name of:

 
 
 
 

492. In moss, reduction division occurs in :

 
 
 
 

493. Photosynthetic bacteria have:

 
 
 
 

494. 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?

 
 
 
 

495. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

497. Total parasites belong to:

 
 
 
 

498. Winged seeds are found in :

 
 
 
 

499. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

503. In moss, conducting tissue is made up of

 
 
 
 

504. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

506. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

508. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Fruiting body of lichens is :

 
 
 
 

514. Downy mildew disease is caused by :

 
 
 
 

515. Which of the following lichens is harmful?

 
 
 
 

516. The fungi are usually:

 
 
 
 

517. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. In Cycas microsporangia are borne on:

 
 
 
 

523. Leaf spot of groundnut is caused by :

 
 
 
 

524. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

526. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

530. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

539. Pollination in Pinus is :

 
 
 
 

540. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

542. Anoxygenic photosynthesis occurs in:

 
 
 
 

543. Pasteurized milk is:

 
 
 
 

544. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

546. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

548. Small epidermal swellings due to infection are called :

 
 
 
 

549. Majority of lichens are :

 
 
 
 

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

 
 
 
 

551. The teeth of peristome of Funaria are :

 
 
 
 

552. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Viroids have:

 
 
 
 

558. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

565. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

567. Multicellular and jacketed sex organs are found in :

 
 
 
 

568. Which of the following statements is not correct?

 
 
 
 

569. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

573. Zoogametes are not found in:

 
 
 
 

574. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

576. What are plasmids?

 
 
 
 

577. The coralloid roots are :

 
 
 
 

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

 
 
 
 

579.

580. Rice, pea, potato are :

 
 
 
 

581. Cyanophage is a virus that attacks:

 
 
 
 

582. Meristele of fern is:

 
 
 
 

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

 
 
 
 

584. Leprosy is caused by:

 
 
 
 

585. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

586. Clostridium can:

 
 
 
 

587. 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:

 
 
 
 

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

 
 
 
 

589. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

591. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. To which country Antony van Leeuwenhoek belong?

 
 
 
 

595. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. The root nodules of leguminous plants contain:

 
 
 
 

599. In Cycas:

 
 
 
 

600. Red rot of sugarcane is caused by :

 
 
 
 

601. The leaves of Funaria are :

 
 
 
 

602. True sexuality is not found in:

 
 
 
 

603. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

604. The term stele was given by:

 
 
 
 

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

 
 
 
 

606. Select the wrong statement:

 
 
 
 

607. Bacteria were first discovered by:

 
 
 
 

608. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

610. Lichens form the first community in

 
 
 
 

611. Wine turns sour because of:

 
 
 
 

612. An alga which is rich in proteins:

 
 
 
 

613. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

615. Facultative parasite is:

 
 
 
 

616. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

621. John Hutchinson divided dicots into two divisions:

 
 
 
 

622. Absorptive nutrition is:

 
 
 
 

623. Cycas is :

 
 
 
 

624. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

626. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

634. Mycoplasmas are not viruses in nature because:

 
 
 
 

635. Pythium debaryanum is the causative agent of:

 
 
 
 

636. Green plants are classified as :

 
 
 
 

637. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

639. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

645. Seeds are characteristically found in :

 
 
 
 

646. In a bacteriophage, DNA is present in:

 
 
 
 

647. The plants of Funaria grow :

 
 
 
 

648. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

650. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

652. Etiology includes the study of :

 
 
 
 

653. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

660. Maximum diversity of life forms occurs in :

 
 
 
 

661. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

663. The microsporophylls on the cone of Cycas are :

 
 
 
 

664. Funaria is :

 
 
 
 

665. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

670. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. Generic name of mango is:

 
 
 
 

674. In moss, calyptra is formed from:

 
 
 
 

675. Roots are absent in :

 
 
 
 

676. The sporangium of fern contains nearly:

 
 
 
 

677. Rhizopus and yeast are usually:

 
 
 
 

678. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

680. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

685. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Citrus canker is caused by:

 
 
 
 

689. Discovery of penicillin was based on:

 
 
 
 

690. Viruses are commonly transmitted in plants through:

 
 
 
 

691. The smallest bacterium is:

 
 
 
 

692. Which is an exception to cell theory?

 
 
 
 

693. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. Which organisms are the oldest life forms?

 
 
 
 

697. Late blight of potato is caused by:

 
 
 
 

698. 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:

 
 
 
 

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

 
 
 
 

700. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

702. Most resistant spore in bacteria is:

 
 
 
 

703. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

705. Fruits are not found in:

 
 
 
 

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

 
 
 
 

707. What is a vector?

 
 
 
 

708. Funaria is :

 
 
 
 

709. Black rust of wheat is caused by:

 
 
 
 

710. The prothallus of fern represents the plant:

 
 
 
 

711. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Indusium in Dryopteris is:

 
 
 
 

716. Iodine is obtained from :

 
 
 
 

717. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

719. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

721. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Longest known virus is:

 
 
 
 

725. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

727. Pollination in Cycas takes place by :

 
 
 
 

728. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

730. Vascular cryptogams is the term used for:

 
 
 
 

731. Parmelia belongs to :

 
 
 
 

732. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. The nucleus of bacteria is:

 
 
 
 

737. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

741. The mode of nutrition of bacteria is usually:

 
 
 
 

742. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

744. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

745. Linnaeus is credited with introducing:

 
 
 
 

746. E coli is a:

 
 
 
 

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

 
 
 
 

748. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

749. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

754. The orders generally have the uniform endings:

 
 
 
 

755. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. White rust of crucifers is caused by:

 
 
 
 

760. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

761. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

763. Pinus is:

 
 
 
 

764. Which lichen is called Reindeer moss?

 
 
 
 

765. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

767. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

772. Facultative saprophyte is:

 
 
 
 

773. Photosynthetic protists belong to:

 
 
 
 

774. Germination of the seed of Pinus is :

 
 
 
 

775. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

777. Which of the following is a monocot?

 
 
 
 

778. In tracheophyta:

 
 
 
 

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

 
 
 
 

780. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

781. Lichens reproduce by :

 
 
 
 

782. Cleavage polyembryony is found in :

 
 
 
 

783. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

790. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

792. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

794. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Protozoans are considered animals because these are:

 
 
 
 

798. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

800. Which is a gametophytic tissue?

 
 
 
 

801. Antibiotic has been extracted from :

 
 
 
 

802. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

804. The male gametes of Pinus are :

 
 
 
 

805. 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:

 
 
 
 

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

 
 
 
 

807. The lambda phase is a:

 
 
 
 

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

 
 
 
 

809. In Pteris, the roots are:

 
 
 
 

810. Fruits are not found in :

 
 
 
 

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

 
 
 
 

812. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

814. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

816. Citrus canker is caused by :

 
 
 
 

817. The spur of Pinus roxburghii has :

 
 
 
 

818. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. Which of the following does not contain chlorophyll?

 
 
 
 

822. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

825. TMV was isolated in crystalline form by:

 
 
 
 

826. Meiosis in Ulothrix takes place:

 
 
 
 

827. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. The fungi are mostly:

 
 
 
 

831. Bacteriophages have been used as:

 
 
 
 

832. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Why is Cycas called a living fossil?

 
 
 
 

836. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

838. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

840. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

841. Aflatoxin is produced as a product in :

 
 
 
 

842. Centric discoid form of diatom is:

 
 
 
 

843. Which causes red tide?

 
 
 
 

844. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

846. Streptomyces falls under:

 
 
 
 

847. In Cycas which structure is equivalent to stamen?

 
 
 
 

848. Nannandria are:

 
 
 
 

849. Which of the following is sago palm?

 
 
 
 

850. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

853. Spermatophyta are characterized by producing:

 
 
 
 

854. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

856. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

858. Transfusion tissue is present in the leaflet of:

 
 
 
 

859. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Coenogamete is found in:

 
 
 
 

863. Which is not found in bacteria?

 
 
 
 

864. The stele of Dryopteris is a: