Quiz_Random

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

 
 
 
 

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

 
 
 
 

3.

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

 
 
 
 

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

 
 
 
 

6. The ferns are usually found:

 
 
 
 

7. Pasteurized milk is:

 
 
 
 

8. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

10. Which of the following lichens is harmful?

 
 
 
 

11. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Redness of red sea is due to :

 
 
 
 

15. Some biologists have used the term Mycetozoa for:

 
 
 
 

16. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

18. One of the distinctive feature of Spirogyra is :

 
 
 
 

19. Viruses have:

 
 
 
 

20. Which is absent from the xylem of Cycas?

 
 
 
 

21. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

23. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

25. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Plasmids are:

 
 
 
 

29. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

30. The nucleus of bacteria is:

 
 
 
 

31. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

35. To which class Riccia belongs :

 
 
 
 

36. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

38. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. The role of meiosis is for:

 
 
 
 

42. Iodine is obtained from:

 
 
 
 

43. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

45. Which of the following is a heterosporous pteridophyte?

 
 
 
 

46. NBG of Lucknow is now named as:

 
 
 
 

47. Lichens form the first community in

 
 
 
 

48. Discovery of penicillin was based on:

 
 
 
 

49. Cycas is :

 
 
 
 

50. Viruses are commonly transmitted in plants through:

 
 
 
 

51. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. What are plasmids?

 
 
 
 

67. Antibiotic has been extracted from :

 
 
 
 

68. Funaria is a Bryophyta because :

 
 
 
 

69. Fruits are not found in :

 
 
 
 

70. Which of the following is sago palm?

 
 
 
 

71. Who discovered streptomycin?

 
 
 
 

72. Gram stain is used to:

 
 
 
 

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

 
 
 
 

74. Chief constituents of bordeaux mixture are :

 
 
 
 

75. Oswald Tippo’s classification was based on :

 
 
 
 

76. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

77. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

79. In angiosperms double fertilization represents:

 
 
 
 

80. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Seeds are characteristically found in:

 
 
 
 

88. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

90. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Green plants are classified as:

 
 
 
 

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

 
 
 
 

95. Sexual reproduction of lichen is due to :

 
 
 
 

96. All protozoans possess:

 
 
 
 

97. The roots of Cycas are :

 
 
 
 

98. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

107. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

109. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

111. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

113. Which of the following statement is correct?

 
 
 
 

114. The fungi are mostly:

 
 
 
 

115. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

121. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

127. Rhizophore of Selaginella is:

 
 
 
 

128. Winged seeds are found in :

 
 
 
 

129. Which is the nuclear material in bacteria?

 
 
 
 

130. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Pasteur is famous for his:

 
 
 
 

135. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

140. Linnaeus is credited with introducing:

 
 
 
 

141. Interferon is a:

 
 
 
 

142. Chemosynthetic bacteria are:

 
 
 
 

143. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. In moss, reduction division occurs in :

 
 
 
 

147. Leprosy is caused by:

 
 
 
 

148. Cycas is different from mango in :

 
 
 
 

149. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

150. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

151. Liverworts are included in :

 
 
 
 

152. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

154. Nitrifying bacteria play an important role by converting:

 
 
 
 

155. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

157. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

159. In Cycas:

 
 
 
 

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

 
 
 
 

161. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

166. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

168. In Gymnosperms endosperm is a:

 
 
 
 

169. Fern plants are:

 
 
 
 

170. The ascus of yeast contains:

 
 
 
 

171. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

173. Pythium debaryanum is the causative agent of:

 
 
 
 

174. Lichens reproduce by :

 
 
 
 

175. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

177. Mycoplasma is different from bacteria due to:

 
 
 
 

178. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

180. Most common type of conjugation in Spirogyra is :

 
 
 
 

181. Mycoplasma are sensitive to:

 
 
 
 

182. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

184. Water-net is the name of:

 
 
 
 

185. Funaria is :

 
 
 
 

186. Funaria is :

 
 
 
 

187. All algae have:

 
 
 
 

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

 
 
 
 

189. Which is a tautonym?

 
 
 
 

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

 
 
 
 

191. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

193. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

194. Select the correct statement: (NEET 2016)

 
 
 
 

195. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

196. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

198. The young leaves of Cycas have :

 
 
 
 

199. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

201. Each chloroplast in Spirogyra bears :

 
 
 
 

202. Yeast grows more rapidly in:

 
 
 
 

203. Where does meiosis occur in yeast?

 
 
 
 

204. The gametophyte of moss has distinct phases :

 
 
 
 

205. Sporophyte of Funaria is :

 
 
 
 

206. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

208. The upper region of moss capsule is :

 
 
 
 

209. Photoautotrophic bacteria have:

 
 
 
 

210. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

211. The seedless plants which possess vascular tissues are:

 
 
 
 

212. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

214. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

216. Club moss is the common name of :

 
 
 
 

217. In Funaria, calyptra is derived from :

 
 
 
 

218. Embryophyta includes :

 
 
 
 

219. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

221. The source of litmus is :

 
 
 
 

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

 
 
 
 

223. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. Agar-agar is obtained from:

 
 
 
 

228. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

230. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

231. Which causes red tide?

 
 
 
 

232. Which one of the following statement is wrong?

 
 
 
 

233. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

235. 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:

 
 
 
 

236. Cellular slime mold is:

 
 
 
 

237. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

239. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

241. Which statement is wrong in regard to bacteria?

 
 
 
 

242. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

244. Saccharomyces ludwigii ascus produces:

 
 
 
 

245. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

247. The archegonia in Selaginella develop on:

 
 
 
 

248. 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?

 
 
 
 

249. The coralloid roots are :

 
 
 
 

250. Cyathia is characterized by:

 
 
 
 

251. Special feature of pollen grains of Pinus is :

 
 
 
 

252. The sporophyte of Riccia is represented by :

 
 
 
 

253. Rhizopus belongs to:

 
 
 
 

254. Diphtheria is caused by:

 
 
 
 

255. The fungi used as food are:

 
 
 
 

256. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

258. Which organisms are the oldest life forms?

 
 
 
 

259. Pinus is:

 
 
 
 

260. Absorptive nutrition is:

 
 
 
 

261. Circular DNA is seen in:

 
 
 
 

262. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

264. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

266. Mycoplasma contains:

 
 
 
 

267. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. The term stele was given by:

 
 
 
 

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

 
 
 
 

272. All archaebacteria lack:

 
 
 
 

273. 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?

 
 
 
 

274. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

275. Which of the following is true for viruses?

 
 
 
 

276. Which is the correct statement about Selaginella?

 
 
 
 

277. The leaf of Cycas shows:

 
 
 
 

278. Male gametophyte of Selaginella is found:

 
 
 
 

279. Yeast belongs to class:

 
 
 
 

280. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

284. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. The fungi are usually:

 
 
 
 

288. The stele of Dryopteris is a:

 
 
 
 

289. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

296. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

303. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

306. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

308. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

314. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

323. Late blight of potato is caused by:

 
 
 
 

324. Roots are absent in :

 
 
 
 

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

 
 
 
 

326. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. In a bacteriophage, DNA is present in:

 
 
 
 

330. The lichens growing on rocks are called :

 
 
 
 

331. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Late blight of potato is caused by :

 
 
 
 

336. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

338. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Reproduction in Cycas takes place by :

 
 
 
 

343. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

345. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. Embryophyta includes:

 
 
 
 

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

 
 
 
 

353. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. Protists which are diploid reproduce sexually by:

 
 
 
 

358. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. What is the role of nitrifying bacteria?

 
 
 
 

362. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

364. Winged pollen grains are found in :

 
 
 
 

365. Which class of Protozoa includes all parasitic forms?

 
 
 
 

366. Diploxylic vascular bundles are found in:

 
 
 
 

367. Sleeping sickness disease in man is caused by:

 
 
 
 

368. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

370. The leaves of Funaria are :

 
 
 
 

371. Detailed study of bacteriophage was made by:

 
 
 
 

372. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

373. Desired type of Cycas can be grown by:

 
 
 
 

374. 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?

 
 
 
 

375. In moss, stomata are found:

 
 
 
 

376. The tree fern is:

 
 
 
 

377. Fruits are not found in:

 
 
 
 

378. What are Cyanobacteria?

 
 
 
 

379. Cycas is:

 
 
 
 

380. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

382. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

383. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

385. Selaginella differs from Moss in having:

 
 
 
 

386. Standard size of a herbarium sheet is:

 
 
 
 

387. Number of capsomeres forming capsid of TMV is:

 
 
 
 

388. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

390. Bentham and Hooker placed gymnosperms:

 
 
 
 

391. Azolla growing in paddy fields helps in:

 
 
 
 

392. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

394. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

396. The lambda phase is a:

 
 
 
 

397. The two conjugating gametangia of Rhizopus are:

 
 
 
 

398. The vascular bundles of Cycas stem are :

 
 
 
 

399. Which of the following are included in Tracheophyta?

 
 
 
 

400. 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:

 
 
 
 

401. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. Methanogens belong to:

 
 
 
 

405. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Amoeba is a member of the phylum:

 
 
 
 

409. Fern prothallus is:

 
 
 
 

410. The chromosomal number in:

 
 
 
 

411. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

413. Which is a gametophytic tissue?

 
 
 
 

414. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

415. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

417. Lichens are ecologically important because :

 
 
 
 

418. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Leaf spot of groundnut is caused by :

 
 
 
 

426. Which bacteria convert nitrate into nitrogen?

 
 
 
 

427. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. The central part of Funaria axis is :

 
 
 
 

431. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. The spur of Pinus roxburghii has :

 
 
 
 

437. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

445. Centric discoid form of diatom is:

 
 
 
 

446. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Cycas plant in appearance resembles :

 
 
 
 

450. To which country Antony van Leeuwenhoek belong?

 
 
 
 

451. Spirogyra represents the :

 
 
 
 

452. Sometimes the bacterial cell is enclosed in:

 
 
 
 

453. The fern plant is:

 
 
 
 

454. Typhoid in man is caused by:

 
 
 
 

455. In Funaria :

 
 
 
 

456. Some bacteria cannot be killed easily because of:

 
 
 
 

457. Green plants are classified as :

 
 
 
 

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

 
 
 
 

459. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

461. 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:

 
 
 
 

462. Smut of maize is caused by :

 
 
 
 

463. Virion refers to:

 
 
 
 

464. Germ theory of disease was proposed by:

 
 
 
 

465. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

469. The sori in Dryopteris are found on:

 
 
 
 

470. Which of the following statements is not correct?

 
 
 
 

471. The largest known bacterium is:

 
 
 
 

472. The flagella of Chlamydomonas are:

 
 
 
 

473. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

475. Cyanophage is a virus that attacks:

 
 
 
 

476. Majority of lichens are :

 
 
 
 

477. Synzoospore is produced in:

 
 
 
 

478. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

480. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

486. Club moss and Peat moss belong to:

 
 
 
 

487. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

489. The first to isolate a plant virus was:

 
 
 
 

490. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. Psilotum is:

 
 
 
 

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

 
 
 
 

499. Ovary is absent in:

 
 
 
 

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

 
 
 
 

501.

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

 
 
 
 

503. What is a vector?

 
 
 
 

504. Which of the following have algal zone?

 
 
 
 

505. Anoxygenic photosynthesis occurs in:

 
 
 
 

506. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

508. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

510. Heterosporous pteridophytes always form:

 
 
 
 

511. The chloroplast of Chlamydomonas are:

 
 
 
 

512. Ovary is absent in :

 
 
 
 

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

 
 
 
 

514. Bacteriophage consists of:

 
 
 
 

515. Rice, pea, potato are :

 
 
 
 

516. How a fern differs from a moss?

 
 
 
 

517. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

519. Photosynthetic protists belong to:

 
 
 
 

520. Pteridophyta are also called:

 
 
 
 

521. Which of the following is a parasitic algae?

 
 
 
 

522. The antherozoids of Funaria are :

 
 
 
 

523. Cleavage polyembryony is found in :

 
 
 
 

524. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. The disease symptom necrosis refers to :

 
 
 
 

528. 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:

 
 
 
 

529. Bacteria were first discovered by:

 
 
 
 

530. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

539. Who discovered cyanophages?

 
 
 
 

540. Most primitive kind of flower is represented by:

 
 
 
 

541. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

544. Longest known virus is:

 
 
 
 

545. Red rot of sugarcane is caused by :

 
 
 
 

546. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

548. The group algae possesses representatives belonging to kingdom:

 
 
 
 

549. Generic name of mango is:

 
 
 
 

550. Pollination in Cycas takes place by :

 
 
 
 

551. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

554. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

556. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Helotism word is used for the symbiosis between :

 
 
 
 

566. The mycelium of Rhizopus is:

 
 
 
 

567. Nitrogen-fixing bacteria may be located:

 
 
 
 

568. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

570. Bacteria are found everywhere, except:

 
 
 
 

571. Ergot of rye is caused by:

 
 
 
 

572. The sporangiophores in Rhizopus are:

 
 
 
 

573. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

575. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. Sexual reproduction in Rhizopus is by:

 
 
 
 

584. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

586. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

587. The chief characteristic of class Ascomycetes is:

 
 
 
 

588. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Viruses are considered to be:

 
 
 
 

593. The spermatozoids of Cycas are :

 
 
 
 

594. Vascular cryptogam is the term used for :

 
 
 
 

595. The teeth of peristome of Funaria are :

 
 
 
 

596. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

598. The tallest moss in the world is :

 
 
 
 

599. Common phycobiont in a lichen is :

 
 
 
 

600. Which fixes atmospheric nitrogen?

 
 
 
 

601. The largest alga is:

 
 
 
 

602. 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:

 
 
 
 

603. Which is a redwood tree?

 
 
 
 

604. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

606. Kuru, a human disease is caused by:

 
 
 
 

607. The Rhizopus is:

 
 
 
 

608. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

610. Which have the largest antherozoid?

 
 
 
 

611. Reproduction in Rhizopus is:

 
 
 
 

612. Photosynthetic bacteria have:

 
 
 
 

613. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

618. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

621. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

623. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

625. In dinoflagellates, the two flagella are:

 
 
 
 

626. The sporangium of fern contains nearly:

 
 
 
 

627. Pinus microsporophyll bears:

 
 
 
 

628. Placenta in fern is:

 
 
 
 

629. The zoospores of Ulothrix are :

 
 
 
 

630. The development of Selaginella embryo is:

 
 
 
 

631. Wine turns sour because of:

 
 
 
 

632. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. White rust of crucifers is caused by:

 
 
 
 

639.

640. The order generally ends with:

 
 
 
 

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

 
 
 
 

642. Most of the lichens are composed of :

 
 
 
 

643. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

645. Pasteurization of milk involves heating for:

 
 
 
 

646. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

652. Embryo formation is not known in :

 
 
 
 

653. The similarity between cyanobacteria and bacteria:

 
 
 
 

654. Ovules are not found enclosed in ovary of:

 
 
 
 

655. The megaspore of Selaginella on germination produces:

 
 
 
 

656. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

658. Botulism is a:

 
 
 
 

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

 
 
 
 

660. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

662. Pteridophytes are also known as :

 
 
 
 

663. The most primitive vascular plants is:

 
 
 
 

664. Which of the following shows heterotrichous habit?

 
 
 
 

665. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

667. Which is not true for Escherichia coli?

 
 
 
 

668. The smallest unit of classification is:

 
 
 
 

669. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

671. Which part of Riccia bears nurse cells?

 
 
 
 

672. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

674. Mycoplasma are:

 
 
 
 

675. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

678. Which of the following are included in Tracheophyta?

 
 
 
 

679. LSD is:

 
 
 
 

680. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

683. Total parasites belong to:

 
 
 
 

684. Coenogamete is found in:

 
 
 
 

685. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Endemic plants are characterised by their:

 
 
 
 

690. Gametophyte is the main plant body in :

 
 
 
 

691. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

693. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

700. Which of the following does not contain chlorophyll?

 
 
 
 

701. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. The sporophyte of Riccia is :

 
 
 
 

705. The disease apple scab is caused by:

 
 
 
 

706. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Ulothrix produces :

 
 
 
 

712. 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:

 
 
 
 

713. Halophiles are the bacteria that require for growth:

 
 
 
 

714. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

716. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

719. Which of the following have a prokaryotic cell?

 
 
 
 

720. Yeast is a source of:

 
 
 
 

721. Triple antigen injection or vaccine are for:

 
 
 
 

722. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

723. Facultative parasite is:

 
 
 
 

724. The orders generally have the uniform endings:

 
 
 
 

725. The prothallus of fern is:

 
 
 
 

726. Most primitive group of vascular plants are:

 
 
 
 

727. Mucilaginous canals in Cycas are found in :

 
 
 
 

728. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

730. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

732. Lichen show :

 
 
 
 

733. Protistan algae obtain their food as:

 
 
 
 

734. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Black rust of wheat is caused by:

 
 
 
 

740. What is streptomycin?

 
 
 
 

741. How is moss different from fern?

 
 
 
 

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

 
 
 
 

743. Siphonogamy is found in:

 
 
 
 

744. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

747. Vascular cryptogams is the term used for:

 
 
 
 

748. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

750. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

752. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

754. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

756. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

758. Bacteria are considered to be plants because they:

 
 
 
 

759. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

764. Vegetative reproduction in Cycas is by means of :

 
 
 
 

765. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

767. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

769. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

771. Economic importance of bacteria lies in their being:

 
 
 
 

772. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

781. Who named prion?

 
 
 
 

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

 
 
 
 

783. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

788. Nannandria are:

 
 
 
 

789. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. The leaves of Funaria are :

 
 
 
 

793. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Bacteria which are spherical are called:

 
 
 
 

797. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

799. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Bacteria differ from viruses in being sensitive to:

 
 
 
 

803. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

805. An Hfr bacterium is one that contains:

 
 
 
 

806.

 

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

 
 
 
 

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

 
 
 
 

809. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

811. Metulae are found in:

 
 
 
 

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

 
 
 
 

813. In moss, peristomial teeth are:

 
 
 
 

814. In moss, sporogenous tissue arises from:

 
 
 
 

815. Indusium in Dryopteris is:

 
 
 
 

816. Which one of the following is a monocot?

 
 
 
 

817. Pollination in Pinus is :

 
 
 
 

818. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

820. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. The gametophyte of fern bears:

 
 
 
 

824. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

825. TMV was isolated in crystalline form by:

 
 
 
 

826. The male gametes of Pinus are :

 
 
 
 

827. The most important property of yeast is:

 
 
 
 

828. Acetobacter is useful in:

 
 
 
 

829. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Pseudomycelium is found in:

 
 
 
 

833. Select the wrong statement:

 
 
 
 

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

 
 
 
 

835. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

836. Banana bunchy top is caused by :

 
 
 
 

837. Saccharomyces is well known for:

 
 
 
 

838. Bacteria growing on synthetic medium are called:

 
 
 
 

839. Disease resistant plant varieties can be produced by :

 
 
 
 

840. Fern prothallus produces:

 
 
 
 

841. Pollination drop is:

 
 
 
 

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

 
 
 
 

843. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

845. The zygospore in Rhizopus on germination forms:

 
 
 
 

846. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Saccharomyces is used in:

 
 
 
 

851. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

859. In tracheophyta:

 
 
 
 

860. Tautonyms are illegitimate in:

 
 
 
 

861. Cell walls of Gram-positive bacteria contain:

 
 
 
 

862. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

864. Lichens are indicators of :