Quiz_Random

1. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. Typhoid in man is caused by:

 
 
 
 

8. LSD is:

 
 
 
 

9. Small epidermal swellings due to infection are called :

 
 
 
 

10. Which of the following is true for Selaginella?

 
 
 
 

11. Desired type of Cycas can be grown by:

 
 
 
 

12. What is mycorrhiza?

 
 
 
 

13. Amoeba is a member of the phylum:

 
 
 
 

14. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

19. The chief characteristic of bryophyta is that :

 
 
 
 

20. Lichens reproduce by :

 
 
 
 

21. The tallest moss in the world is :

 
 
 
 

22. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Bacteria are considered to be plants because they:

 
 
 
 

27. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

29. NBG of Lucknow is now named as:

 
 
 
 

30. Green plants are classified as:

 
 
 
 

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

 
 
 
 

32. In binomial system most of the words are:

 
 
 
 

33. E coli is a:

 
 
 
 

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

 
 
 
 

35. Which is the correct statement about Selaginella?

 
 
 
 

36. Fern phloem lacks:

 
 
 
 

37. Which of the following are included in Tracheophyta?

 
 
 
 

38. Late blight of potato is caused by :

 
 
 
 

39. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

40. Funaria are commonly found :

 
 
 
 

41. Fertility of the soil is increased by:

 
 
 
 

42. Water-net is the name of:

 
 
 
 

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

 
 
 
 

44. The megaspore of Selaginella on germination produces:

 
 
 
 

45. Streptomyces falls under:

 
 
 
 

46. Male gametes in Dryopteris are:

 
 
 
 

47. Virus and bacteriophage are made-up of:

 
 
 
 

48. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. The sexual reproductive organs in Rhizopus are:

 
 
 
 

55. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

66. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

68. In moss, calyptra is formed from:

 
 
 
 

69. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

70. Which is an exception to cell theory?

 
 
 
 

71. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

73. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

75. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

77. Triple antigen injection or vaccine are for:

 
 
 
 

78. Who among the following discovered virus?

 
 
 
 

79. 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?

 
 
 
 

80. The orders generally have the uniform endings:

 
 
 
 

81. Photosynthetic bacteria have:

 
 
 
 

82. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Heterospory is the production of:

 
 
 
 

86. Green plants are classified as :

 
 
 
 

87. 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:

 
 
 
 

88. Cycas is :

 
 
 
 

89. Which of the following is sago palm?

 
 
 
 

90. Red rot of sugarcane is caused by :

 
 
 
 

91. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

93. 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:

 
 
 
 

94. Halophiles are the bacteria that require for growth:

 
 
 
 

95. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. The group algae possesses representatives belonging to kingdom:

 
 
 
 

101. Roots are absent in :

 
 
 
 

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

 
 
 
 

103. Fern prothallus produces:

 
 
 
 

104. Sleeping sickness disease in man is caused by:

 
 
 
 

105. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

107. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

109. The gametophyte of fern is as:

 
 
 
 

110. Discovery of penicillin was based on:

 
 
 
 

111. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

113. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

115. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Rice, pea, potato are :

 
 
 
 

119. In a bacteriophage, DNA is present in:

 
 
 
 

120. Most primitive embryophytes are placed in :

 
 
 
 

121. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. The Rhizopus is:

 
 
 
 

128. The phloem of vascular system of Cycas is :

 
 
 
 

129. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

136. Transfusion tissue is present in the leaflet of:

 
 
 
 

137. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. Which is the nuclear material in bacteria?

 
 
 
 

142. Which is a redwood tree?

 
 
 
 

143. Oswald Tippo’s classification was based on :

 
 
 
 

144. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

146. John Hutchinson divided dicots into two divisions:

 
 
 
 

147. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Bacteria which are spherical are called:

 
 
 
 

152. Choose the correct statement about Spirogyra:

 
 
 
 

153. The chief characteristic of class Ascomycetes is:

 
 
 
 

154. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

157. Mycoplasma are sensitive to:

 
 
 
 

158. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

160. All algae have:

 
 
 
 

161. Why is Cycas called a living fossil?

 
 
 
 

162. Metulae are found in:

 
 
 
 

163. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

165. Pinus is:

 
 
 
 

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

 
 
 
 

167. In Cycas which structure is equivalent to stamen?

 
 
 
 

168. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Simple polyembryony is found in :

 
 
 
 

172. Penicillin was discovered by:

 
 
 
 

173. Anoxygenic photosynthesis occurs in:

 
 
 
 

174. Azolla and Salvinia both are:

 
 
 
 

175. The truncated cone of HIV consists of:

 
 
 
 

176. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

178. 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?

 
 
 
 

179. Synzoospore is produced in:

 
 
 
 

180. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

182. The disease apple scab is caused by:

 
 
 
 

183. Sexual reproduction in Rhizopus is by:

 
 
 
 

184. The flagella of Chlamydomonas are:

 
 
 
 

185. To which country Antony van Leeuwenhoek belong?

 
 
 
 

186. The development of Selaginella embryo is:

 
 
 
 

187. Diploxylic vascular bundles are found in:

 
 
 
 

188. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

191. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

193. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

195. The ferns are usually found:

 
 
 
 

196. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

198. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

199. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

201. The most important property of yeast is:

 
 
 
 

202. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. The mode of nutrition of bacteria is usually:

 
 
 
 

207. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

209. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. The Rhizopus gametes are formed in:

 
 
 
 

213. Pollination in Pinus is :

 
 
 
 

214. TMV was isolated in crystalline form by:

 
 
 
 

215. The sporophyte of Riccia is represented by :

 
 
 
 

216. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

218. 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:

 
 
 
 

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

 
 
 
 

220. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

226. Cellular slime mold is:

 
 
 
 

227. Placenta in fern is:

 
 
 
 

228. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

230. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. The spermatozoids of Cycas are :

 
 
 
 

234. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

236.

237. Black rust of wheat is caused by:

 
 
 
 

238. An Hfr bacterium is one that contains:

 
 
 
 

239. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

241. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

246. In Pteris, the roots are:

 
 
 
 

247. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

249. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

251. Which of the following does not contain chlorophyll?

 
 
 
 

252. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

254. An alga which is rich in proteins:

 
 
 
 

255. Fern prothallus is:

 
 
 
 

256. Fruits are not found in:

 
 
 
 

257. Which of the following have a prokaryotic cell?

 
 
 
 

258. The prothallus of fern is:

 
 
 
 

259. The stele of Dryopteris is a:

 
 
 
 

260. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

262. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

270. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Rhizopus belongs to:

 
 
 
 

278. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

280. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. Kuru, a human disease is caused by:

 
 
 
 

284. Water-borne bacterial diseases are:

 
 
 
 

285. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

287. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. Club moss is the common name of :

 
 
 
 

291. Sexual reproduction of lichen is due to :

 
 
 
 

292. Asexual reproductive body of Volvox is called:

 
 
 
 

293. Mixed cropping helps :

 
 
 
 

294. 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?

 
 
 
 

295. The zoospores of Ulothrix are :

 
 
 
 

296. Red rot of sugarcane is caused by:

 
 
 
 

297. 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:

 
 
 
 

298. Cyanophage is a virus that attacks:

 
 
 
 

299. Woody climbers are known as :

 
 
 
 

300. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

302. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

304. Chemosynthetic bacteria are:

 
 
 
 

305. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

307. Spirogyra differs from moss protonema in having :

 
 
 
 

308. Nitrogen-fixing bacteria may be located:

 
 
 
 

309. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

311. Funaria can be differentiated from Cycas :

 
 
 
 

312. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

319. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

320. The mycelium of Rhizopus is:

 
 
 
 

321. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

323. Botulinum toxin effects:

 
 
 
 

324. The fungi used as food are:

 
 
 
 

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

 
 
 
 

326. What are plasmids?

 
 
 
 

327. Bryophyta have a special character from other plants:

 
 
 
 

328. Which of the following shows heterotrichous habit?

 
 
 
 

329. Milk is converted to curd by:

 
 
 
 

330. Gametophyte is the main plant body in :

 
 
 
 

331. Majority of lichens are :

 
 
 
 

332. Lichen show :

 
 
 
 

333. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

335. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

341. Agar-agar is obtained from:

 
 
 
 

342. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

344. Nannandria are:

 
 
 
 

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

 
 
 
 

346. Usually, bacteria reproduce by:

 
 
 
 

347. Clostridium can:

 
 
 
 

348. The largest known bacterium is:

 
 
 
 

349. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

359. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

361. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Indusium in Dryopteris is:

 
 
 
 

365. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

369. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

371. Virion refers to:

 
 
 
 

372. The largest alga is:

 
 
 
 

373. The archegonia in Selaginella develop on:

 
 
 
 

374. Pollination in Cycas takes place by :

 
 
 
 

375. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

377. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. Which have the largest antherozoid?

 
 
 
 

381. Yeast grows more rapidly in:

 
 
 
 

382. Vegetative reproduction in Cycas is by means of :

 
 
 
 

383. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Iodine is obtained from:

 
 
 
 

387. Psilotum is:

 
 
 
 

388. The roots of Cycas are :

 
 
 
 

389. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

392. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

393. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

396. Fern plants are:

 
 
 
 

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

 
 
 
 

398. Bacteria are found everywhere, except:

 
 
 
 

399. Interferon is a:

 
 
 
 

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

 
 
 
 

401. Select the wrong statement:

 
 
 
 

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

 
 
 
 

403. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Lichens are indicators of :

 
 
 
 

422. In Gymnocarpeae the fruiting body is :

 
 
 
 

423. Chemosynthetic bacteria are:

 
 
 
 

424. Some diseases caused by bacteria are:

 
 
 
 

425. The archegonia of Selaginella are differentiated by:

 
 
 
 

426. Rhizopus and yeast are usually:

 
 
 
 

427. Cyathia is characterized by:

 
 
 
 

428. Bentham and Hooker placed gymnosperms:

 
 
 
 

429. Winged seeds are found in :

 
 
 
 

430. In Cycas microsporangia are borne on:

 
 
 
 

431. Protists which are diploid reproduce sexually by:

 
 
 
 

432. Detailed study of bacteriophage was made by:

 
 
 
 

433. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

435. Ergot is obtained from :

 
 
 
 

436. True sexuality is not found in:

 
 
 
 

437. What is streptomycin?

 
 
 
 

438. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

440. Viruses are considered to be:

 
 
 
 

441. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

448. Most resistant spore in bacteria is:

 
 
 
 

449. Pythium debaryanum is the causative agent of:

 
 
 
 

450. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

452. Protozoans are considered animals because these are:

 
 
 
 

453. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

456. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. In Cycas the fertilization is:

 
 
 
 

460. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

461. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

469. Downy mildew disease is caused by :

 
 
 
 

470. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

472. Standard size of a herbarium sheet is:

 
 
 
 

473. The tree fern is:

 
 
 
 

474. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

476. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. 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:

 
 
 
 

480. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

486. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. The alga, Spirogyra are found in :

 
 
 
 

490. Cryptogams include :

 
 
 
 

491. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

493. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

495. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

497. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

499. Most of the lichens are composed of :

 
 
 
 

500. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

502. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

506. Cap cells are found in the filament of:

 
 
 
 

507. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

511. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

513. Which causes red tide?

 
 
 
 

514. In moss, sporogenous tissue arises from:

 
 
 
 

515. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

517. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

519. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

521. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

522. Parmelia belongs to :

 
 
 
 

523. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. Select the wrong statement:

 
 
 
 

528. Red rot of sugarcane is caused by :

 
 
 
 

529. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. Genetic material of TMV is:

 
 
 
 

536. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

538. In tracheophyta:

 
 
 
 

539. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

541. In dinoflagellates, the two flagella are:

 
 
 
 

542. Which is a tautonym?

 
 
 
 

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

 
 
 
 

544. Protistan algae obtain their food as:

 
 
 
 

545. The photosynthetic protists are:

 
 
 
 

546. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

550. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Reproduction in Rhizopus is:

 
 
 
 

561. Methanogens belong to:

 
 
 
 

562. The teeth of peristome of Funaria are :

 
 
 
 

563. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

568. Nitrifying bacteria play an important role by converting:

 
 
 
 

569. Total parasites belong to:

 
 
 
 

570. Winged pollen grains are found in :

 
 
 
 

571. Centric discoid form of diatom is:

 
 
 
 

572. In angiosperms double fertilization represents:

 
 
 
 

573. Saccharomyces ludwigii ascus produces:

 
 
 
 

574. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Lichens show :

 
 
 
 

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

 
 
 
 

579. Bacteria were first discovered by:

 
 
 
 

580. Ovary is absent in:

 
 
 
 

581. Penicillin is obtained from:

 
 
 
 

582. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Vascular cryptogams is the term used for:

 
 
 
 

586. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

591. The antibiotic is obtained from:

 
 
 
 

592. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

594. Fairy ring is the name given to:

 
 
 
 

595. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

597. Enteric bacteria are those bacteria that live:

 
 
 
 

598. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. Which is a fungicide?

 
 
 
 

602. Leaf spot of groundnut is caused by :

 
 
 
 

603. Fruits are not found in Cycas because:

 
 
 
 

604. The chloroplast in Ulothrix is :

 
 
 
 

605. Pollination drop is:

 
 
 
 

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

 
 
 
 

607. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

609. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Which group of algae have an incipient nucleus?

 
 
 
 

614. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

616. Which is not true for Escherichia coli?

 
 
 
 

617. Most of the algae are :

 
 
 
 

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

 
 
 
 

619. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

621. Which is not found in bacteria?

 
 
 
 

622. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

624. The root nodules of leguminous plants contain:

 
 
 
 

625. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

627. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

629. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. In Pteris, the archegonia are present:

 
 
 
 

633. In Cycas:

 
 
 
 

634. 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:

 
 
 
 

635. Longest known virus is:

 
 
 
 

636. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

638. A gill of Agaricus:

 
 
 
 

639. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

641. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

643. The sporophyte of Riccia is :

 
 
 
 

644. The leaves of Funaria are :

 
 
 
 

645. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Most primitive embryophytes are placed in:

 
 
 
 

649. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653. Bacteriophage consists of:

 
 
 
 

654. Zoogametes are not found in:

 
 
 
 

655. Heterosporous pteridophytes always form:

 
 
 
 

656. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

660. Which of the following is a monocot?

 
 
 
 

661. Oswald Tippo’s classification is:

 
 
 
 

662. Quarantine regulations are concerned with:

 
 
 
 

663. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

664. What is absent in Deuteromycetes?

 
 
 
 

665. Mycoplasma is different from bacteria due to:

 
 
 
 

666. What are Cyanobacteria?

 
 
 
 

667. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

669. The coralloid roots are :

 
 
 
 

670. Most appropriate word for protozoans is:

 
 
 
 

671. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. Who named prion?

 
 
 
 

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

 
 
 
 

683. Smallpox is caused by:

 
 
 
 

684. Embryophyta includes:

 
 
 
 

685. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

687. Liverworts are included in :

 
 
 
 

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

 
 
 
 

689. 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?

 
 
 
 

690. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

691. Fruiting body of lichens is :

 
 
 
 

692. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

694. Sporophyte of fern is:

 
 
 
 

695. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. To which class Riccia belongs :

 
 
 
 

699. Which of the following is a heterosporous pteridophyte?

 
 
 
 

700. Mucilaginous canals in Cycas are found in :

 
 
 
 

701. Antibiotic has been extracted from :

 
 
 
 

702. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. Citrus canker is caused by:

 
 
 
 

706. The development of sporangium in Selaginella is:

 
 
 
 

707. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. In Funaria :

 
 
 
 

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

 
 
 
 

717. Funaria is :

 
 
 
 

718. Ovules are not found enclosed in ovary of:

 
 
 
 

719. How is moss different from fern?

 
 
 
 

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

 
 
 
 

721. Yeast belongs to class:

 
 
 
 

722. The fungi are mostly:

 
 
 
 

723. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

729. Circular DNA is seen in:

 
 
 
 

730. Late blight of potato is caused by:

 
 
 
 

731. The genetic material of poxvirus is:

 
 
 
 

732. Viroids have:

 
 
 
 

733. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

735. Mycoplasma are:

 
 
 
 

736. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

738. The megasporangium of Selaginella is:

 
 
 
 

739. Helotism word is used for the symbiosis between :

 
 
 
 

740. Cycas is:

 
 
 
 

741. Ovary is absent in :

 
 
 
 

742. What is special feature of fern archegonia?

 
 
 
 

743.

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

 
 
 
 

745. Which lichen is called Reindeer moss?

 
 
 
 

746. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

748. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

750. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

753. The fungi are usually:

 
 
 
 

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

 
 
 
 

755. Which of the following have algal zone?

 
 
 
 

756. Embryophyta includes :

 
 
 
 

757. Smut of maize is caused by :

 
 
 
 

758. Cleavage polyembryony is found in :

 
 
 
 

759. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

761. Yeast is a source of:

 
 
 
 

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

 
 
 
 

763. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

765. Ulothrix produces :

 
 
 
 

766. In Selaginella, the microsporangia are:

 
 
 
 

767. Photoautotrophic bacteria have:

 
 
 
 

768. The term stele was given by:

 
 
 
 

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

 
 
 
 

770. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

772. Pneumonia is caused by:

 
 
 
 

773.

 

774. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

776. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

777. Who discovered heterothallism in fungi?

 
 
 
 

778. Each chloroplast in Spirogyra bears :

 
 
 
 

779. Among the algae kelps are :

 
 
 
 

780. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

785. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

786. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

788. Pseudomycelium is found in:

 
 
 
 

789. Black rust of wheat is caused by:

 
 
 
 

790. Ovules are not found enclosed in ovary in :

 
 
 
 

791. Who discovered streptomycin?

 
 
 
 

792. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

794. Ginkgo biloba is a:

 
 
 
 

795. The DNA of E coli is:

 
 
 
 

796. Banana bunchy top is caused by :

 
 
 
 

797. Funaria is a Bryophyta because :

 
 
 
 

798. Pteridophyta are also called:

 
 
 
 

799. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

801. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

803. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

809. Sporophyte of Funaria is :

 
 
 
 

810. Viruses are commonly transmitted in plants through:

 
 
 
 

811. Which is an edible fungus?

 
 
 
 

812. Diphtheria is caused by:

 
 
 
 

813. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. Generic name of mango is:

 
 
 
 

817. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

819. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

821. Heterotrichous habit means :

 
 
 
 

822. Who discovered cyanophages?

 
 
 
 

823. Bacteria growing on synthetic medium are called:

 
 
 
 

824. The leaf of Cycas shows:

 
 
 
 

825. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

827. Reproduction in Cycas takes place by :

 
 
 
 

828. Redness of red sea is due to :

 
 
 
 

829. Which condition is found in Cycas?

 
 
 
 

830. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. Black rust of wheat is caused by:

 
 
 
 

839. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

843. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

845. Which class of Protozoa includes all parasitic forms?

 
 
 
 

846. Endemic plants are characterised by their:

 
 
 
 

847. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

849. Cycas plant in appearance resembles :

 
 
 
 

850. Ethylene oxide is widely used to:

 
 
 
 

851. Selaginella differs from Moss in having:

 
 
 
 

852. Number of capsomeres forming capsid of TMV is:

 
 
 
 

853. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

855. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

856. Tautonyms are illegitimate in:

 
 
 
 

857. Gram stain is used to:

 
 
 
 

858. All protozoans possess:

 
 
 
 

859. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

861. Lichens are pioneers of vegetation in a :

 
 
 
 

862. Lichens form the first community in

 
 
 
 

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

 
 
 
 

864. Select the correct statement: (NEET 2016)