Quiz_Random

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

 
 
 
 

2. Metulae are found in:

 
 
 
 

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

 
 
 
 

4. How is moss different from fern?

 
 
 
 

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

 
 
 
 

6. Majority of lichens are :

 
 
 
 

7. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. The sporophyte of Riccia is represented by :

 
 
 
 

12. Heterocysts are found in :

 
 
 
 

13. Which condition is found in Cycas?

 
 
 
 

14. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

16. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Ergot of rye is caused by:

 
 
 
 

21. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

23. In moss, calyptra is formed from:

 
 
 
 

24. Zoogametes are not found in:

 
 
 
 

25. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

27. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

29. Which of the following is a heterosporous pteridophyte?

 
 
 
 

30. Bacteria growing on synthetic medium are called:

 
 
 
 

31. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

33. Sleeping sickness disease in man is caused by:

 
 
 
 

34. NBG of Lucknow is now named as:

 
 
 
 

35. Asexual reproductive body of Volvox is called:

 
 
 
 

36. Winged seeds are found in :

 
 
 
 

37. 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:

 
 
 
 

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

 
 
 
 

39.

 

40. 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:

 
 
 
 

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

 
 
 
 

42. Vegetative reproduction in Cycas is by means of :

 
 
 
 

43. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Cap cells are found in the filament of:

 
 
 
 

47. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Which group of algae have an incipient nucleus?

 
 
 
 

56. The Rhizopus is:

 
 
 
 

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

 
 
 
 

58. Cryptogams include :

 
 
 
 

59. Which bacteria convert nitrate into nitrogen?

 
 
 
 

60. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

62. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

71. Virus and bacteriophage are made-up of:

 
 
 
 

72. What is a vector?

 
 
 
 

73. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

75. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Generic name of mango is:

 
 
 
 

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

 
 
 
 

81. Cocci types of bacteria are:

 
 
 
 

82. 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:

 
 
 
 

83. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

88. Maximum diversity of life forms occurs in :

 
 
 
 

89. Yeast is a source of:

 
 
 
 

90. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

92. Cycas is :

 
 
 
 

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

 
 
 
 

94. Which is absent from the xylem of Cycas?

 
 
 
 

95. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

97. Black rust of wheat is caused by:

 
 
 
 

98. The leaves of Funaria are :

 
 
 
 

99. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

100. Pasteur is famous for his:

 
 
 
 

101. Etiology includes the study of :

 
 
 
 

102. Cyathia is characterized by:

 
 
 
 

103. Rhizopus belongs to:

 
 
 
 

104. Red rot of sugarcane is caused by :

 
 
 
 

105. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

107. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Bacteriophage consists of:

 
 
 
 

112. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

114. 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?

 
 
 
 

115. Liverworts are included in :

 
 
 
 

116. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

118. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

120. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. In dinoflagellates, the two flagella are:

 
 
 
 

128. The most important property of yeast is:

 
 
 
 

129. Placenta in fern is:

 
 
 
 

130. In Funaria, calyptra is derived from :

 
 
 
 

131. Which of the following is a parasitic algae?

 
 
 
 

132. All protozoans possess:

 
 
 
 

133. Tautonyms are illegitimate in:

 
 
 
 

134. Spirogyra represents the :

 
 
 
 

135. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

137. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

139. Funaria is :

 
 
 
 

140. Disease resistant plant varieties can be produced by :

 
 
 
 

141. Banana bunchy top is caused by :

 
 
 
 

142. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. Who named prion?

 
 
 
 

149. Total parasites belong to:

 
 
 
 

150. The fungi that grow on wood are called:

 
 
 
 

151. 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?

 
 
 
 

152. Funaria can be differentiated from Cycas :

 
 
 
 

153. Siphonogamy is found in:

 
 
 
 

154. The largest known bacterium is:

 
 
 
 

155. The group algae possesses representatives belonging to kingdom:

 
 
 
 

156. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

158. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

160. Most resistant spore in bacteria is:

 
 
 
 

161. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

162. Fruits are not found in:

 
 
 
 

163. The first to isolate a plant virus was:

 
 
 
 

164. Reproduction in Rhizopus is:

 
 
 
 

165. Pseudomycelium is found in:

 
 
 
 

166. The source of litmus is :

 
 
 
 

167. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

169. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

171. The roots of Cycas are :

 
 
 
 

172. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

175. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

177. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Pasteurization of milk involves heating for:

 
 
 
 

181. The development of sporangium in Selaginella is:

 
 
 
 

182. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. Which lichen is called Reindeer moss?

 
 
 
 

186. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

188. Viroids have:

 
 
 
 

189. Fern prothallus is:

 
 
 
 

190. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

192. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

193. Clostridium can:

 
 
 
 

194. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

196. Sporophyte of Funaria is :

 
 
 
 

197. Quarantine regulations are concerned with:

 
 
 
 

198. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

200.

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

 
 
 
 

202. Aflatoxin is produced as a product in :

 
 
 
 

203. Ovary is absent in :

 
 
 
 

204. Chemosynthetic bacteria are:

 
 
 
 

205. . Tapetum develops in:

 
 
 
 

206. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Coenogamete is found in:

 
 
 
 

210. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

212. Ovules are not found enclosed in ovary in :

 
 
 
 

213. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

215. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

218. Smut of maize is caused by :

 
 
 
 

219. Antibiotic has been extracted from :

 
 
 
 

220. The male gametes of Pinus are :

 
 
 
 

221. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

223. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

224. In Gymnocarpeae the fruiting body is :

 
 
 
 

225. Mycoplasma are sensitive to:

 
 
 
 

226. Saccharomyces ludwigii ascus produces:

 
 
 
 

227. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

229. Botulinum toxin effects:

 
 
 
 

230. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. The order generally ends with:

 
 
 
 

236. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

237. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

239. Genetic material of TMV is:

 
 
 
 

240. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

242. Streptomyces falls under:

 
 
 
 

243. The largest alga is:

 
 
 
 

244. Special feature of pollen grains of Pinus is :

 
 
 
 

245. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

250. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. Azolla growing in paddy fields helps in:

 
 
 
 

256. Late blight of potato is caused by :

 
 
 
 

257. Cycas is:

 
 
 
 

258. Antibiotics cure the disease by:

 
 
 
 

259. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. The spur of Pinus roxburghii has :

 
 
 
 

264. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. White rust of crucifers is caused by:

 
 
 
 

268. Redness of red sea is due to :

 
 
 
 

269. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Which is the correct statement about Selaginella?

 
 
 
 

275. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

280. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

285. The lichens growing on rocks are called :

 
 
 
 

286. Fruiting body of lichens is :

 
 
 
 

287. Most of the algae are :

 
 
 
 

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

 
 
 
 

289. Fertility of the soil is increased by:

 
 
 
 

290. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

291. Water bloom is generally caused by :

 
 
 
 

292. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

294. Funaria is :

 
 
 
 

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

 
 
 
 

296. Pollination in Pinus is :

 
 
 
 

297. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

302. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

304. In Gymnosperms endosperm is a:

 
 
 
 

305. Lichens reproduce by :

 
 
 
 

306. Funaria is a Bryophyta because :

 
 
 
 

307. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

313. Bentham and Hooker placed gymnosperms:

 
 
 
 

314. Which one of the following is a monocot?

 
 
 
 

315. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

317. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

318. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

320. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

323. The flagella of Chlamydomonas are:

 
 
 
 

324. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

328. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

330. Botulism is a:

 
 
 
 

331. What is absent in Deuteromycetes?

 
 
 
 

332. The ferns are usually found:

 
 
 
 

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

 
 
 
 

334. Pythium debaryanum is the causative agent of:

 
 
 
 

335. The prothallus of fern is:

 
 
 
 

336. Black rust of wheat is caused by:

 
 
 
 

337. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

340. In moss, peristomial teeth are:

 
 
 
 

341. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Late blight of potato is caused by:

 
 
 
 

349. Mycoplasma are:

 
 
 
 

350. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

352. How a fern differs from a moss?

 
 
 
 

353. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. Black rust of wheat is caused by:

 
 
 
 

357. The leaves of Funaria are :

 
 
 
 

358. The sporangium of fern contains nearly:

 
 
 
 

359. Which class of Protozoa includes all parasitic forms?

 
 
 
 

360. The spermatozoids of Cycas are :

 
 
 
 

361. Cycas plant in appearance resembles :

 
 
 
 

362. What is streptomycin?

 
 
 
 

363. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Diphtheria is caused by:

 
 
 
 

371. Most of the lichens are composed of :

 
 
 
 

372. Lichens form the first community in

 
 
 
 

373. Gram stain is used to:

 
 
 
 

374. In binomial system most of the words are:

 
 
 
 

375. What is the role of nitrifying bacteria?

 
 
 
 

376. Each chloroplast in Spirogyra bears :

 
 
 
 

377. The chloroplast in Ulothrix is :

 
 
 
 

378. In Funaria :

 
 
 
 

379. Economic importance of bacteria lies in their being:

 
 
 
 

380. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Which is a gametophytic tissue?

 
 
 
 

385. Bryophyta have been placed in cryptogams because:

 
 
 
 

386. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. The sexual reproductive organs in Rhizopus are:

 
 
 
 

390. In a bacteriophage, DNA is present in:

 
 
 
 

391. Ulothrix produces :

 
 
 
 

392. The mode of nutrition of bacteria is usually:

 
 
 
 

393. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Photoautotrophic bacteria have:

 
 
 
 

398. Smallpox is caused by:

 
 
 
 

399. 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?

 
 
 
 

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

 
 
 
 

401. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

402. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

404. Meristele of fern is:

 
 
 
 

405. The nucleus of bacteria is:

 
 
 
 

406. LSD is:

 
 
 
 

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

 
 
 
 

408. Ergot is obtained from :

 
 
 
 

409. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

411. The antibiotic is obtained from:

 
 
 
 

412. Where does meiosis occur in yeast?

 
 
 
 

413. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

415. The coralloid roots are :

 
 
 
 

416. The role of meiosis is for:

 
 
 
 

417. Among the algae kelps are :

 
 
 
 

418. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

420. Winged pollen grains are found in :

 
 
 
 

421. Viruses are considered to be:

 
 
 
 

422. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

424. 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?

 
 
 
 

425. Water-net is the name of:

 
 
 
 

426. Absorptive nutrition is:

 
 
 
 

427. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. In Cycas microsporangia are borne on:

 
 
 
 

431. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

434. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

446. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

448. Sporophyte of fern is:

 
 
 
 

449. Viruses are commonly transmitted in plants through:

 
 
 
 

450. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

452. Spirogyra differs from moss protonema in having :

 
 
 
 

453. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

455. The leaf of Cycas shows:

 
 
 
 

456. The most primitive vascular plants is:

 
 
 
 

457. Nitrogen-fixing bacteria may be located:

 
 
 
 

458. In moss, stomata are found:

 
 
 
 

459. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

461. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

464. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

471. Cleavage polyembryony is found in :

 
 
 
 

472. The smallest unit of classification is:

 
 
 
 

473. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

476. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

478. Cycas is different from mango in :

 
 
 
 

479. Choose the correct statement about Spirogyra:

 
 
 
 

480. Leprosy is caused by:

 
 
 
 

481. Citrus canker is caused by :

 
 
 
 

482. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

484. Pinus microsporophyll bears:

 
 
 
 

485. The central part of Funaria axis is :

 
 
 
 

486. Pneumonia is caused by:

 
 
 
 

487. Number of capsomeres forming capsid of TMV is:

 
 
 
 

488. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. Which have the largest antherozoid?

 
 
 
 

492. The tree fern is:

 
 
 
 

493. Penicillin was discovered by:

 
 
 
 

494. The sporophyte of Riccia is :

 
 
 
 

495. What is special feature of fern archegonia?

 
 
 
 

496. Agar-agar is obtained from:

 
 
 
 

497. Longest known virus is:

 
 
 
 

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

 
 
 
 

499. In Cycas which structure is equivalent to stamen?

 
 
 
 

500. The gametophyte of fern bears:

 
 
 
 

501. The antherozoids of Funaria are :

 
 
 
 

502. What are plasmids?

 
 
 
 

503. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

505. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

507. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

509. Methanogens belong to:

 
 
 
 

510. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

517. The tallest moss in the world is :

 
 
 
 

518. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

520. Which of the following statements is not correct?

 
 
 
 

521. Which is a fungicide?

 
 
 
 

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

 
 
 
 

523. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. The fungi used as food are:

 
 
 
 

530. Lichen show :

 
 
 
 

531. The ascus of yeast contains:

 
 
 
 

532. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

533. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

535. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

543. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. The zygospore in Rhizopus on germination forms:

 
 
 
 

547. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

550. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

554. Rice, pea, potato are :

 
 
 
 

555. Proembryo in Pinus is :

 
 
 
 

556. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

558. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

560. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Heterotrichous habit means :

 
 
 
 

564. Chemosynthetic bacteria are:

 
 
 
 

565. The sporangiophores in Rhizopus are:

 
 
 
 

566. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

568. Reproduction in Cycas takes place by :

 
 
 
 

569. Cycas revoluta is widely grown as :

 
 
 
 

570. Pinus gerardiana is :

 
 
 
 

571. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

573. Amoeba is a member of the phylum:

 
 
 
 

574. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

579. 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:

 
 
 
 

580. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

582. The DNA of E coli is:

 
 
 
 

583. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

585. Spermatophyta are characterized by producing:

 
 
 
 

586. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

588. Multicellular and jacketed sex organs are found in :

 
 
 
 

589. Diploxylic vascular bundles are found in:

 
 
 
 

590. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

597. Who discovered streptomycin?

 
 
 
 

598. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

603. Select the correct statement: (NEET 2016)

 
 
 
 

604. Which is a tautonym?

 
 
 
 

605. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

607. Bacteriophages have been used as:

 
 
 
 

608. Triple antigen injection or vaccine are for:

 
 
 
 

609. The microsporophylls on the cone of Cycas are :

 
 
 
 

610. Synzoospore is produced in:

 
 
 
 

611. Lichens are the indicator of pollution :

 
 
 
 

612. Select the wrong statement:

 
 
 
 

613. Who discovered heterothallism in fungi?

 
 
 
 

614. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

617. Meiosis in Ulothrix takes place:

 
 
 
 

618. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

620. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

622. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

624. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. The genetic material of poxvirus is:

 
 
 
 

629. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

633. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. Mostly type of zygospore in Ulothrix is:

 
 
 
 

638. Which of the following are included in Tracheophyta?

 
 
 
 

639. 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:

 
 
 
 

640. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. The fern plant is:

 
 
 
 

644. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

646. Which is a redwood tree?

 
 
 
 

647. Embryophyta includes :

 
 
 
 

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

 
 
 
 

649.

650. Enteric bacteria are those bacteria that live:

 
 
 
 

651. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

653. Which causes red tide?

 
 
 
 

654. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

656. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

658. Little leaf disease of Brinjal is caused by:

 
 
 
 

659. The zoospores of Ulothrix are :

 
 
 
 

660. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

661. Isomorphic type alternation of generation is found in:

 
 
 
 

662. Who among the following discovered virus?

 
 
 
 

663. The sori in Dryopteris are found on:

 
 
 
 

664. Select the wrong statement:

 
 
 
 

665. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

667. Saccharomyces is used in:

 
 
 
 

668. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

673. Rhizopus and yeast are usually:

 
 
 
 

674. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

678. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

680. Leaf spot of groundnut is caused by :

 
 
 
 

681. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

683. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

685. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

687. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

689. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

691. The term stele was given by:

 
 
 
 

692. What are Cyanobacteria?

 
 
 
 

693. Parmelia belongs to :

 
 
 
 

694. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

695. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

703. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

705.

706. Simple polyembryony is found in :

 
 
 
 

707. Discovery of penicillin was based on:

 
 
 
 

708. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

710. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

712. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

719. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

721. Viruses have:

 
 
 
 

722. In Herpes virus DNA is:

 
 
 
 

723. Bacteria differ from viruses in being sensitive to:

 
 
 
 

724. Which of the following are included in Tracheophyta?

 
 
 
 

725. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. Acellular slime mold is/are:

 
 
 
 

729. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

731. Germ theory of disease was proposed by:

 
 
 
 

732. Which of the following is sago palm?

 
 
 
 

733. The mycelium of Rhizopus is:

 
 
 
 

734. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

739. Seeds are characteristically found in :

 
 
 
 

740. Mucilaginous canals in Cycas are found in :

 
 
 
 

741. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Cellular slime mold is:

 
 
 
 

746. Virion refers to:

 
 
 
 

747. Interferon is a:

 
 
 
 

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

 
 
 
 

749. Rhizoids of Riccia are :

 
 
 
 

750. Citrus canker is caused by:

 
 
 
 

751. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

753. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

755. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Indusium in Dryopteris is:

 
 
 
 

759. Oswald Tippo’s classification is:

 
 
 
 

760. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

763. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

765. Psilotum is:

 
 
 
 

766. Embryophyta includes:

 
 
 
 

767. One of the distinctive feature of Spirogyra is :

 
 
 
 

768. Spermatophyta are characterized by producing:

 
 
 
 

769. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

773. Most appropriate word for protozoans is:

 
 
 
 

774. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

776. Heterospory is the production of:

 
 
 
 

777. Cyanophage is a virus that attacks:

 
 
 
 

778. Wine turns sour because of:

 
 
 
 

779. Mycoplasma contains:

 
 
 
 

780. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

785. The chief characteristic of bryophyta is that :

 
 
 
 

786. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Which of the following is true for Selaginella?

 
 
 
 

790. In angiosperms double fertilization represents:

 
 
 
 

791. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. The fungi are mostly:

 
 
 
 

795. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

797. The megasporangium of Selaginella is:

 
 
 
 

798. Club moss is the common name of :

 
 
 
 

799. Anoxygenic photosynthesis occurs in:

 
 
 
 

800. Photosynthetic bacteria have:

 
 
 
 

801. Lichens are ecologically important because :

 
 
 
 

802. The middle sterile part of capsule is called:

 
 
 
 

803. To which class Riccia belongs :

 
 
 
 

804. Iodine is obtained from:

 
 
 
 

805. The root nodules of leguminous plants contain:

 
 
 
 

806. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

808. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Vascular cryptogam is the term used for :

 
 
 
 

812. All algae have:

 
 
 
 

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

 
 
 
 

814. Which among the following is a shrub?

 
 
 
 

815. Which organisms are the oldest life forms?

 
 
 
 

816. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

823. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Ethylene oxide is widely used to:

 
 
 
 

827. Heterospory and ligulate leaves are a feature of:

 
 
 
 

828. Cycas is similar to a mustard plant :

 
 
 
 

829. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Most primitive embryophytes are placed in:

 
 
 
 

833. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

835. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. The seedless plants which possess vascular tissues are:

 
 
 
 

839. Seeds are characteristically found in:

 
 
 
 

840. Typhoid in man is caused by:

 
 
 
 

841. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

843. True sexuality is not found in:

 
 
 
 

844. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

845. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. The plants of Funaria grow :

 
 
 
 

849. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

853. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

855. Water-borne bacterial diseases are:

 
 
 
 

856. The two conjugating gametangia of Rhizopus are:

 
 
 
 

857. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

858. Which is an exception to cell theory?

 
 
 
 

859. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

864. Polystelic condition is found in: