Quiz_Random

1. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. All algae have:

 
 
 
 

5. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

7. Virus and bacteriophage are made-up of:

 
 
 
 

8. The term stele was given by:

 
 
 
 

9. Facultative parasite is:

 
 
 
 

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

 
 
 
 

11. Pollination in Pinus is :

 
 
 
 

12. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

14. Viruses have:

 
 
 
 

15. Enzymes are absent in:

 
 
 
 

16. In Selaginella, the microsporangia are:

 
 
 
 

17. What is a vector?

 
 
 
 

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

 
 
 
 

19. Rhizophore of Selaginella is:

 
 
 
 

20. Sexual reproduction of lichen is due to :

 
 
 
 

21. Interferon is a:

 
 
 
 

22. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

24. Which of the following statements is not correct?

 
 
 
 

25. In tracheophyta:

 
 
 
 

26. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

28. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Who discovered heterothallism in fungi?

 
 
 
 

32. Bacteria differ from viruses in being sensitive to:

 
 
 
 

33. In dinoflagellates, the two flagella are:

 
 
 
 

34. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

36. Lichens reproduce by :

 
 
 
 

37. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

39. Acellular slime mold is/are:

 
 
 
 

40. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

42. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. 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:

 
 
 
 

46. What are plasmids?

 
 
 
 

47. Parmelia belongs to :

 
 
 
 

48. Black rust of wheat is caused by:

 
 
 
 

49. The fungi are mostly:

 
 
 
 

50. Helotism word is used for the symbiosis between :

 
 
 
 

51. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

56. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

58. 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?

 
 
 
 

59. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Nannandria are:

 
 
 
 

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

 
 
 
 

64. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. The mode of nutrition of bacteria is usually:

 
 
 
 

68. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

70. The first to isolate a plant virus was:

 
 
 
 

71. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

72. The fungi used as food are:

 
 
 
 

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

 
 
 
 

74. 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:

 
 
 
 

75. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Which of the following applies to Selaginella?

 
 
 
 

80. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

85. Late blight of potato is caused by :

 
 
 
 

86. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

88. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

90. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

92. Funaria are commonly found :

 
 
 
 

93. Which of the following are included in Tracheophyta?

 
 
 
 

94. The leaves of Funaria are :

 
 
 
 

95. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Coenogamete is found in:

 
 
 
 

99. To which country Antony van Leeuwenhoek belong?

 
 
 
 

100. Which lichen is called Reindeer moss?

 
 
 
 

101. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. 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?

 
 
 
 

108. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. In Pteris, the archegonia are present:

 
 
 
 

112. Pteridophytes are also known as :

 
 
 
 

113. Synzoospore is produced in:

 
 
 
 

114. The leaves of Funaria are :

 
 
 
 

115. In Herpes virus DNA is:

 
 
 
 

116. Standard size of a herbarium sheet is:

 
 
 
 

117. White rust of crucifers is caused by:

 
 
 
 

118. Which is absent from the xylem of Cycas?

 
 
 
 

119. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

121. Ovary is absent in :

 
 
 
 

122. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

127. Which one of the following is a monocot?

 
 
 
 

128. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

133. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Which is a fungicide?

 
 
 
 

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

 
 
 
 

139. Reproduction in Cycas takes place by :

 
 
 
 

140.

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

 
 
 
 

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

 
 
 
 

143. Sporophyte of Funaria is :

 
 
 
 

144. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

145. Which is not true for Escherichia coli?

 
 
 
 

146. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

148. Reproduction in Rhizopus is:

 
 
 
 

149. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

150. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

152. Yeast grows more rapidly in:

 
 
 
 

153. In moss, peristomial teeth are:

 
 
 
 

154. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

159. Water-net is the name of:

 
 
 
 

160. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

166. Diphtheria is caused by:

 
 
 
 

167.

168. Citrus canker is caused by :

 
 
 
 

169. Where does meiosis occur in yeast?

 
 
 
 

170. How is moss different from fern?

 
 
 
 

171. Most primitive group of vascular plants are:

 
 
 
 

172. The lambda phase is a:

 
 
 
 

173. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

174. 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:

 
 
 
 

175. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

180. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

182. Green plants are classified as:

 
 
 
 

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

 
 
 
 

184. Which of the following is a monocot?

 
 
 
 

185. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

187. What are Cyanobacteria?

 
 
 
 

188. In Cycas:

 
 
 
 

189. Red rot of sugarcane is caused by:

 
 
 
 

190. Sporophyte of fern is:

 
 
 
 

191. The gametophyte of fern is as:

 
 
 
 

192. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Funaria is :

 
 
 
 

196. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Methanogens belong to:

 
 
 
 

201. Rice, pea, potato are :

 
 
 
 

202. Nitrifying bacteria play an important role by converting:

 
 
 
 

203. Metulae are found in:

 
 
 
 

204. The smallest unit of classification is:

 
 
 
 

205. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

207. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

209. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

213. Pinus microsporophyll bears:

 
 
 
 

214. The group algae possesses representatives belonging to kingdom:

 
 
 
 

215. Botulism is a:

 
 
 
 

216. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

218. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. Ovules are not found enclosed in ovary in :

 
 
 
 

222. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. What is streptomycin?

 
 
 
 

226. Most common type of conjugation in Spirogyra is :

 
 
 
 

227. Most of the algae are :

 
 
 
 

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

 
 
 
 

229. The plants of Funaria grow :

 
 
 
 

230. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

232. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

234. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. Pollination drop is:

 
 
 
 

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

 
 
 
 

239. Bacteria are considered to be plants because they:

 
 
 
 

240. Linnaeus is credited with introducing:

 
 
 
 

241. Botulinum toxin effects:

 
 
 
 

242. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Liverworts are included in :

 
 
 
 

249. Pinus gerardiana is :

 
 
 
 

250. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

252. Isomorphic type alternation of generation is found in:

 
 
 
 

253. 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?

 
 
 
 

254. Ergot of rye is caused by:

 
 
 
 

255. Smallpox is caused by:

 
 
 
 

256. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

258. Which of the following have a prokaryotic cell?

 
 
 
 

259. Penicillin is obtained from:

 
 
 
 

260. Fern plants are:

 
 
 
 

261. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

264. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

265. Siphonogamy is found in:

 
 
 
 

266. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

268. 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:

 
 
 
 

269. Mycoplasma are sensitive to:

 
 
 
 

270. Pasteur is famous for his:

 
 
 
 

271. Photoautotrophic bacteria have:

 
 
 
 

272. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

274. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

276. The chief characteristic of class Ascomycetes is:

 
 
 
 

277. Viroids have:

 
 
 
 

278. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

279. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

281. Who discovered cyanophages?

 
 
 
 

282. The roots of Cycas are :

 
 
 
 

283. Embryophyta includes:

 
 
 
 

284. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. Which is a tautonym?

 
 
 
 

288. The seedless plants which possess vascular tissues are:

 
 
 
 

289. Desired type of Cycas can be grown by:

 
 
 
 

290. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

292. Which of the following are absent in Mycoplasma?

 
 
 
 

293. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

295. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

298. Aflatoxin is produced as a product in :

 
 
 
 

299. Pasteurization of milk involves heating for:

 
 
 
 

300. Which of the following have algal zone?

 
 
 
 

301. The zygospore in Rhizopus on germination forms:

 
 
 
 

302. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

304. What is special feature of fern archegonia?

 
 
 
 

305. Which of the following is true for Selaginella?

 
 
 
 

306. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

311. Streptomycin is obtained from:

 
 
 
 

312. Ovary is absent in:

 
 
 
 

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

 
 
 
 

314. Fruits are not found in :

 
 
 
 

315. Vascular cryptogams is the term used for:

 
 
 
 

316. Amoeba is a member of the phylum:

 
 
 
 

317. Disease resistant plant varieties can be produced by :

 
 
 
 

318. Citrus canker is caused by:

 
 
 
 

319. Winged seeds are found in :

 
 
 
 

320. Clostridium can:

 
 
 
 

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

 
 
 
 

322. Male gametes in Dryopteris are:

 
 
 
 

323. The tree fern is:

 
 
 
 

324. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

326. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

328. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

329. Which fixes atmospheric nitrogen?

 
 
 
 

330. Little leaf disease of Brinjal is caused by:

 
 
 
 

331. Sexual reproduction in Rhizopus is by:

 
 
 
 

332. Germ theory of disease was proposed by:

 
 
 
 

333. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

335. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

341. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Gram stain is used to:

 
 
 
 

349. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

351. Bacteria which are spherical are called:

 
 
 
 

352. The stele of Dryopteris is a:

 
 
 
 

353. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

354. Enteric bacteria are those bacteria that live:

 
 
 
 

355. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

357. The fungi are usually:

 
 
 
 

358. Cycas revoluta is widely grown as :

 
 
 
 

359. Vegetative reproduction in Cycas is by means of :

 
 
 
 

360. Which of the following statement is correct?

 
 
 
 

361. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

363. Most of the lichens are composed of :

 
 
 
 

364. Number of capsomeres forming capsid of TMV is:

 
 
 
 

365. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. Bacteria are found everywhere, except:

 
 
 
 

369. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. Fern prothallus produces:

 
 
 
 

377. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

379. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

381. Plasmids are:

 
 
 
 

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

 
 
 
 

383. Which group of algae have an incipient nucleus?

 
 
 
 

384. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

385. The ascus of yeast contains:

 
 
 
 

386. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

392. The sori in Dryopteris are found on:

 
 
 
 

393. Bryophyta have a special character from other plants:

 
 
 
 

394. Ovules are not found enclosed in ovary in :

 
 
 
 

395. Pythium debaryanum is the causative agent of:

 
 
 
 

396. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. The antherozoids of Funaria are :

 
 
 
 

400. Some bacteria cannot be killed easily because of:

 
 
 
 

401. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

403. The sporophyte of Riccia is represented by :

 
 
 
 

404. Early blight of potato is caused by:

 
 
 
 

405. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. Economic importance of bacteria lies in their being:

 
 
 
 

415. All protozoans possess:

 
 
 
 

416.

 

417. Infective part of virus was discovered by:

 
 
 
 

418. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

422. Centric discoid form of diatom is:

 
 
 
 

423. Spermatophyta are characterized by producing:

 
 
 
 

424. The teeth of peristome of Funaria are :

 
 
 
 

425. Leprosy is caused by:

 
 
 
 

426. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

428. What is mycorrhiza?

 
 
 
 

429. Cleavage polyembryony is found in :

 
 
 
 

430. Which condition is found in Cycas?

 
 
 
 

431. The lichens growing on rocks are called :

 
 
 
 

432. Which of the following shows heterotrichous habit?

 
 
 
 

433. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

435. In moss, stomata are found:

 
 
 
 

436. Pasteurized milk is:

 
 
 
 

437. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Heterosporous pteridophytes always form:

 
 
 
 

441. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

446. In a bacteriophage, DNA is present in:

 
 
 
 

447. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

453. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

455. The fern plant is:

 
 
 
 

456. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

458. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

460.

461. Usually, bacteria reproduce by:

 
 
 
 

462. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

464. Seeds are characteristically found in :

 
 
 
 

465. The prothallus of fern represents the plant:

 
 
 
 

466. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

468. Funaria can be differentiated from Cycas :

 
 
 
 

469. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. The megasporangium of Selaginella is:

 
 
 
 

476. Saccharomyces is well known for:

 
 
 
 

477. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. Rhizopus and yeast are usually:

 
 
 
 

481. The orders generally have the uniform endings:

 
 
 
 

482. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Which of the following is true for viruses?

 
 
 
 

486. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. The similarity between cyanobacteria and bacteria:

 
 
 
 

490. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

492. Oswald Tippo’s classification was based on :

 
 
 
 

493. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

495. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

499. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

501. Who named prion?

 
 
 
 

502. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

507. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Bacteriophages have been used as:

 
 
 
 

511. Small epidermal swellings due to infection are called :

 
 
 
 

512. Woody climbers are known as :

 
 
 
 

513. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

515. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. Bentham and Hooker placed gymnosperms:

 
 
 
 

520. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

522. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

525. In moss, conducting tissue is made up of

 
 
 
 

526. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

530. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

532. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

534. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

541. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Which of the following is sago palm?

 
 
 
 

547. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

550. Select the wrong statement:

 
 
 
 

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

 
 
 
 

552. Selaginella differs from Moss in having:

 
 
 
 

553. Mycoplasma was discovered by:

 
 
 
 

554. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Lichen show :

 
 
 
 

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

 
 
 
 

559. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

561. In Funaria :

 
 
 
 

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

 
 
 
 

563. Pneumonia is caused by:

 
 
 
 

564. The male gametes of Pinus are :

 
 
 
 

565. Simple polyembryony is found in :

 
 
 
 

566. Mycoplasmas are not viruses in nature because:

 
 
 
 

567. Which have the largest antherozoid?

 
 
 
 

568. LSD is:

 
 
 
 

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

 
 
 
 

570. Genetic material of TMV is:

 
 
 
 

571. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

573. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

575. The archegonia in Selaginella develop on:

 
 
 
 

576. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

578. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

580. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

581. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

587. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

589. Gymnosperms could also be called as:

 
 
 
 

590. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

596. The archegonia of Selaginella are differentiated by:

 
 
 
 

597. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

598. Mycoplasma are:

 
 
 
 

599. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. Which part of Riccia bears nurse cells?

 
 
 
 

606. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. Cyanophage is a virus that attacks:

 
 
 
 

611. Meristele of fern is:

 
 
 
 

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

 
 
 
 

613. Iodine is obtained from:

 
 
 
 

614. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

616. Which among the following is a shrub?

 
 
 
 

617. Cycas plant in appearance resembles :

 
 
 
 

618. The rhizoids of Funaria are :

 
 
 
 

619. Mostly type of zygospore in Ulothrix is:

 
 
 
 

620. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

622. Spirogyra differs from moss protonema in having :

 
 
 
 

623. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

625. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

627. To which class Riccia belongs :

 
 
 
 

628. Azolla growing in paddy fields helps in:

 
 
 
 

629. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

631. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

632. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

634. Chemosynthetic bacteria are:

 
 
 
 

635. Common phycobiont in a lichen is :

 
 
 
 

636. Antibiotic has been extracted from :

 
 
 
 

637. Which is the nuclear material in bacteria?

 
 
 
 

638. Iodine is obtained from :

 
 
 
 

639. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

641. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

643. Mixed cropping helps :

 
 
 
 

644. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Facultative saprophyte is:

 
 
 
 

653. 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:

 
 
 
 

654. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

656. Lichens form the first community in

 
 
 
 

657. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

659. The ferns are usually found:

 
 
 
 

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

 
 
 
 

661. Which of the following is a parasitic algae?

 
 
 
 

662. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. The coralloid roots are :

 
 
 
 

666. Reserve food in Euglena is:

 
 
 
 

667. Roots are absent in :

 
 
 
 

668. The chromosomal number in:

 
 
 
 

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

 
 
 
 

670. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

672. The sporophyte of Riccia is :

 
 
 
 

673. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. 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:

 
 
 
 

677. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

679. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. Spirogyra represents the :

 
 
 
 

683. 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?

 
 
 
 

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

 
 
 
 

685. All archaebacteria lack:

 
 
 
 

686. The megaspore of Selaginella on germination produces:

 
 
 
 

687. In Cycas microsporangia are borne on:

 
 
 
 

688. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

690. In Cycas the fertilization is:

 
 
 
 

691. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

696. Smut of maize is caused by :

 
 
 
 

697. Fruits are not found in:

 
 
 
 

698. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

708. Embryophyta includes :

 
 
 
 

709. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Halophiles are the bacteria that require for growth:

 
 
 
 

713. Pollination in Cycas takes place by :

 
 
 
 

714. Sleeping sickness disease in man is caused by:

 
 
 
 

715. Ovules are not found enclosed in ovary of:

 
 
 
 

716. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

718. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Meiosis in Ulothrix takes place:

 
 
 
 

723. Photosynthetic bacteria have:

 
 
 
 

724. Total parasites belong to:

 
 
 
 

725. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

733. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

738. The zoospores of Ulothrix are :

 
 
 
 

739. The gametophyte produced by apospory is :

 
 
 
 

740. Triple antigen injection or vaccine are for:

 
 
 
 

741. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

743. Red rot of sugarcane is caused by :

 
 
 
 

744. Winged pollen grains are found in :

 
 
 
 

745. The spermatozoids of Cycas are :

 
 
 
 

746. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Cap cells are found in the filament of:

 
 
 
 

750. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

752. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

754. The gametophyte of fern bears:

 
 
 
 

755. The fungi that grow on wood are called:

 
 
 
 

756. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

758. Virion refers to:

 
 
 
 

759. Which is an edible fungus?

 
 
 
 

760. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

762. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

764. Spermatophyta are characterized by producing:

 
 
 
 

765. Oswald Tippo’s classification is:

 
 
 
 

766. The development of sporangium in Selaginella is:

 
 
 
 

767. What is absent in Deuteromycetes?

 
 
 
 

768. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

769. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

771. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

773. The middle sterile part of capsule is called:

 
 
 
 

774. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

776. Select the correct statement: (NEET 2016)

 
 
 
 

777. Wine turns sour because of:

 
 
 
 

778. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

780. Downy mildew disease is caused by :

 
 
 
 

781. In a diplontic life cycle:

 
 
 
 

782. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

784. Etiology includes the study of :

 
 
 
 

785. Select the wrong statement:

 
 
 
 

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

 
 
 
 

787. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. Black rust of wheat is caused by:

 
 
 
 

791. Heterospory is the production of:

 
 
 
 

792. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Chemosynthetic bacteria are:

 
 
 
 

808. The disease apple scab is caused by:

 
 
 
 

809. In Funaria, calyptra is derived from :

 
 
 
 

810. In moss, sporophyte is formed on:

 
 
 
 

811. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

813. The gametophyte of moss has distinct phases :

 
 
 
 

814. Bacteria were first discovered by:

 
 
 
 

815. Heterotrichous habit means :

 
 
 
 

816. Psilotum is:

 
 
 
 

817. Which statement is wrong in regard to bacteria?

 
 
 
 

818. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

819. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

822. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

824. Special feature of pollen grains of Pinus is :

 
 
 
 

825. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. Which class of Protozoa includes all parasitic forms?

 
 
 
 

832. In angiosperms double fertilization represents:

 
 
 
 

833. The Rhizopus is:

 
 
 
 

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

 
 
 
 

835. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

837. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

839. Zoogametes are not found in:

 
 
 
 

840. The most important property of yeast is:

 
 
 
 

841. Most resistant spore in bacteria is:

 
 
 
 

842. Ectocarpus produces:

 
 
 
 

843. The source of litmus is :

 
 
 
 

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

 
 
 
 

845. Diploxylic vascular bundles are found in:

 
 
 
 

846. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. Bivalved siliceous shell or frustule occur in:

 
 
 
 

852. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

854. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. The spur of Pinus roxburghii has :

 
 
 
 

861. Which causes red tide?

 
 
 
 

862. Photosynthetic protists belong to:

 
 
 
 

863. Detailed study of bacteriophage was made by:

 
 
 
 

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