Quiz_Random

1. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

3. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Proembryo in Pinus is :

 
 
 
 

15. Sleeping sickness disease in man is caused by:

 
 
 
 

16. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

24. Most resistant spore in bacteria is:

 
 
 
 

25. The term stele was given by:

 
 
 
 

26. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

33. Cycas is :

 
 
 
 

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

 
 
 
 

35. In Funaria :

 
 
 
 

36. 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:

 
 
 
 

37. Cell walls of Gram-positive bacteria contain:

 
 
 
 

38. The flagella of Chlamydomonas are:

 
 
 
 

39. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. In Gymnocarpeae the fruiting body is :

 
 
 
 

43. In a diplontic life cycle:

 
 
 
 

44. The fungi used as food are:

 
 
 
 

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

 
 
 
 

46. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. What is a vector?

 
 
 
 

52. First animal pathogenic virus was discovered by:

 
 
 
 

53. The chromosomal number in:

 
 
 
 

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

 
 
 
 

55. Which of the following applies to Selaginella?

 
 
 
 

56. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. What is mycorrhiza?

 
 
 
 

65. The chloroplast of Chlamydomonas are:

 
 
 
 

66. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

68. Mixed cropping helps :

 
 
 
 

69. Halophiles are the bacteria that require for growth:

 
 
 
 

70. Funaria are commonly found :

 
 
 
 

71. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

73. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

75. Oswald Tippo’s classification is:

 
 
 
 

76. The sexual reproductive organs in Rhizopus are:

 
 
 
 

77. In moss, sporophyte is formed on:

 
 
 
 

78. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. The role of meiosis is for:

 
 
 
 

82. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

84. Funaria is a Bryophyta because :

 
 
 
 

85. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

87. The stele of Dryopteris is a:

 
 
 
 

88. Yeast belongs to class:

 
 
 
 

89. The archegonia of Selaginella are differentiated by:

 
 
 
 

90. Spirogyra represents the :

 
 
 
 

91. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Which one of the following is a monocot?

 
 
 
 

97. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

99. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Ulothrix produces :

 
 
 
 

103. The young leaves of Cycas have :

 
 
 
 

104. The truncated cone of HIV consists of:

 
 
 
 

105. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

111. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

113. Choose the correct statement about Spirogyra:

 
 
 
 

114. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

115. The prothallus of fern represents the plant:

 
 
 
 

116. The gametophyte of moss has distinct phases :

 
 
 
 

117. Saccharomyces is well known for:

 
 
 
 

118. The leaves of Funaria are :

 
 
 
 

119. Mycoplasma is different from bacteria due to:

 
 
 
 

120. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

122. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. The fungi that grow on wood are called:

 
 
 
 

127. The first to isolate a plant virus was:

 
 
 
 

128. Cocci types of bacteria are:

 
 
 
 

129. Fern prothallus is:

 
 
 
 

130. The megasporangium of Selaginella is:

 
 
 
 

131. Yeast grows more rapidly in:

 
 
 
 

132. Black rust of wheat is caused by:

 
 
 
 

133. Isomorphic type alternation of generation is found in:

 
 
 
 

134. Pollination in Cycas takes place by :

 
 
 
 

135. Penicillin was discovered by:

 
 
 
 

136. Iodine is obtained from:

 
 
 
 

137. Why is Cycas called a living fossil?

 
 
 
 

138. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

140. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. The group algae possesses representatives belonging to kingdom:

 
 
 
 

150. Most primitive embryophytes are placed in:

 
 
 
 

151. In Cycas which structure is equivalent to stamen?

 
 
 
 

152. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Total parasites belong to:

 
 
 
 

159. Ethylene oxide is widely used to:

 
 
 
 

160. Which is a fungicide?

 
 
 
 

161. Bacteriophages have been used as:

 
 
 
 

162. 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?

 
 
 
 

163. Bentham and Hooker placed gymnosperms:

 
 
 
 

164. What are plasmids?

 
 
 
 

165. The sori in Dryopteris are found on:

 
 
 
 

166. The fungi are mostly:

 
 
 
 

167. The rhizoids of Funaria are :

 
 
 
 

168. Chief constituents of bordeaux mixture are :

 
 
 
 

169. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

171. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

173. Multicellular and jacketed sex organs are found in :

 
 
 
 

174. The gametophyte of fern bears:

 
 
 
 

175.

176. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

178. Which statement is wrong in regard to bacteria?

 
 
 
 

179. The largest known bacterium is:

 
 
 
 

180. Green plants are classified as:

 
 
 
 

181. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

183. Broad spectrum antibiotic is, which:

 
 
 
 

184. Protists which are diploid reproduce sexually by:

 
 
 
 

185. Lichens are indicators of :

 
 
 
 

186. TMV was isolated in crystalline form by:

 
 
 
 

187. Germ theory of disease was proposed by:

 
 
 
 

188. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

190. The gametophyte produced by apospory is :

 
 
 
 

191. Each chloroplast in Spirogyra bears :

 
 
 
 

192. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

194. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Botulinum toxin effects:

 
 
 
 

202. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

204. Spermatophyta are characterized by producing:

 
 
 
 

205. Meiosis in Ulothrix takes place:

 
 
 
 

206. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

210. Sometimes the bacterial cell is enclosed in:

 
 
 
 

211. Botulism is a:

 
 
 
 

212. Smut of maize is caused by :

 
 
 
 

213.

214. Which of the following have algal zone?

 
 
 
 

215. Lichens show :

 
 
 
 

216. How is moss different from fern?

 
 
 
 

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

 
 
 
 

218. Metulae are found in:

 
 
 
 

219. Interferon is a:

 
 
 
 

220. Climbers are found in genus:

 
 
 
 

221. Streptomyces falls under:

 
 
 
 

222. Methanogens belong to:

 
 
 
 

223. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

225. Generic name of mango is:

 
 
 
 

226.

 

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

 
 
 
 

228. Red rot of sugarcane is caused by:

 
 
 
 

229. Red rot of sugarcane is caused by :

 
 
 
 

230. Which causes red tide?

 
 
 
 

231. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. Heterotrichous habit means :

 
 
 
 

235. Gametophyte is the main plant body in :

 
 
 
 

236. NBG of Lucknow is now named as:

 
 
 
 

237. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

239. Embryophyta includes:

 
 
 
 

240. The plants of Funaria grow :

 
 
 
 

241. What is absent in Deuteromycetes?

 
 
 
 

242. Most primitive group of vascular plants are:

 
 
 
 

243. Spermatophyta are characterized by producing:

 
 
 
 

244. Maximum diversity of life forms occurs in :

 
 
 
 

245. Funaria is :

 
 
 
 

246. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

248. The mycelium of Rhizopus is:

 
 
 
 

249. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

254. The order generally ends with:

 
 
 
 

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

 
 
 
 

256. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Club moss is the common name of :

 
 
 
 

260. Ectocarpus produces:

 
 
 
 

261. Ovary is absent in:

 
 
 
 

262. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

263. The fern plant is:

 
 
 
 

264. Who discovered heterothallism in fungi?

 
 
 
 

265. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

267. What is streptomycin?

 
 
 
 

268. Fruits are not found in :

 
 
 
 

269. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

271. Select the correct statement: (NEET 2016)

 
 
 
 

272. Pythium debaryanum is the causative agent of:

 
 
 
 

273. Rhizopus belongs to:

 
 
 
 

274. Who among the following discovered virus?

 
 
 
 

275. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. 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:

 
 
 
 

279. Which is a tautonym?

 
 
 
 

280. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. Saccharomyces ludwigii ascus produces:

 
 
 
 

284. Aflatoxin is produced as a product in :

 
 
 
 

285. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

287. All archaebacteria lack:

 
 
 
 

288. The two conjugating gametangia of Rhizopus are:

 
 
 
 

289. Saccharomyces is used in:

 
 
 
 

290. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

292. In moss, reduction division occurs in :

 
 
 
 

293. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. Acetobacter is useful in:

 
 
 
 

298. Cycas is similar to a mustard plant :

 
 
 
 

299. The sporophyte of Riccia is represented by :

 
 
 
 

300. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

302. Who discovered streptomycin?

 
 
 
 

303. Which of the following are absent in Mycoplasma?

 
 
 
 

304. Longest known virus is:

 
 
 
 

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

 
 
 
 

306. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

308. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. The lambda phase is a:

 
 
 
 

312.

313. The DNA of E coli is:

 
 
 
 

314. Spirogyra differs from moss protonema in having :

 
 
 
 

315. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

318. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Which is absent from the xylem of Cycas?

 
 
 
 

322. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

324. Which is a redwood tree?

 
 
 
 

325. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Photoautotrophic bacteria have:

 
 
 
 

331. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

333. The vascular bundles of Cycas stem are :

 
 
 
 

334. Kuru, a human disease is caused by:

 
 
 
 

335. The sporangiophores in Rhizopus are:

 
 
 
 

336. The development of sporangium in Selaginella is:

 
 
 
 

337. Heterospory is the production of:

 
 
 
 

338. Select the wrong statement:

 
 
 
 

339. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

341. Water-net is the name of:

 
 
 
 

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

 
 
 
 

343. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

344. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. 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:

 
 
 
 

349. Plasmids are:

 
 
 
 

350. The alga, Spirogyra are found in :

 
 
 
 

351. 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?

 
 
 
 

352. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

354. Citrus canker is caused by:

 
 
 
 

355. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

358. The gametophyte of fern is as:

 
 
 
 

359. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

361. Special feature of pollen grains of Pinus is :

 
 
 
 

362. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

364. Bacteria growing on synthetic medium are called:

 
 
 
 

365. Diploxylic vascular bundles are found in:

 
 
 
 

366. Which fixes atmospheric nitrogen?

 
 
 
 

367. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

369. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

371. Viruses are commonly transmitted in plants through:

 
 
 
 

372. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

377. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

379. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

384. The phloem of vascular system of Cycas is :

 
 
 
 

385. Ovules are not found enclosed in ovary in :

 
 
 
 

386. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

387. Which of the following are included in Tracheophyta?

 
 
 
 

388. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

391. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Mucilaginous canals in Cycas are found in :

 
 
 
 

395. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

397. All protozoans possess:

 
 
 
 

398. Linnaeus is credited with introducing:

 
 
 
 

399. Which of the following is a heterosporous pteridophyte?

 
 
 
 

400. Bacteria are considered to be plants because they:

 
 
 
 

401. LSD is:

 
 
 
 

402. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. Which among the following is a shrub?

 
 
 
 

406. Some diseases caused by bacteria are:

 
 
 
 

407. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

409. Bacteria are placed under:

 
 
 
 

410. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Iodine is obtained from :

 
 
 
 

414. To which country Antony van Leeuwenhoek belong?

 
 
 
 

415. Majority of lichens are :

 
 
 
 

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

 
 
 
 

417. The root nodules of leguminous plants contain:

 
 
 
 

418. Pteridophytes are also known as :

 
 
 
 

419. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

421. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

423. Desired type of Cycas can be grown by:

 
 
 
 

424. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

428. Indusium in Dryopteris is:

 
 
 
 

429. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

434. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. Citrus canker is caused by :

 
 
 
 

438. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. The middle sterile part of capsule is called:

 
 
 
 

442. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

445. The ferns are usually found:

 
 
 
 

446. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

453. White rust of crucifers is caused by:

 
 
 
 

454. Which condition is found in Cycas?

 
 
 
 

455. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. 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?

 
 
 
 

459. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

460. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

462. Yeast is a source of:

 
 
 
 

463. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

465. 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?

 
 
 
 

466. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

468. A gill of Agaricus:

 
 
 
 

469. In Cycas:

 
 
 
 

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

 
 
 
 

471. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. In moss, peristomial teeth are:

 
 
 
 

475. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. One of the distinctive feature of Spirogyra is :

 
 
 
 

479. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

487. Which of the following is true for Selaginella?

 
 
 
 

488. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

490. Transfusion tissue is present in the leaflet of:

 
 
 
 

491. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. Placenta in fern is:

 
 
 
 

495. Pollination drop is:

 
 
 
 

496. Gram stain is used to:

 
 
 
 

497. Sexual reproduction in Rhizopus is by:

 
 
 
 

498. True sexuality is not found in:

 
 
 
 

499. Lichens reproduce by :

 
 
 
 

500. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

502. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

504. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

511. 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:

 
 
 
 

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

 
 
 
 

513. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. To which class Riccia belongs :

 
 
 
 

517. Endemic plants are characterised by their:

 
 
 
 

518. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. The largest alga is:

 
 
 
 

523. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

525. An alga which is rich in proteins:

 
 
 
 

526. Pinus gerardiana is :

 
 
 
 

527. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

530. The disease symptom necrosis refers to :

 
 
 
 

531. Which is not true for Escherichia coli?

 
 
 
 

532. The Rhizopus is:

 
 
 
 

533. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

535. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. The megaspore of Selaginella on germination produces:

 
 
 
 

544. Winged pollen grains are found in :

 
 
 
 

545. In Selaginella, the microsporangia are:

 
 
 
 

546. Lichens form the first community in

 
 
 
 

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

 
 
 
 

548. Genetic material of TMV is:

 
 
 
 

549. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

550. In Cycas microsporangia are borne on:

 
 
 
 

551. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

553. Cyanophage is a virus that attacks:

 
 
 
 

554. Asexual reproductive body of Volvox is called:

 
 
 
 

555. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Some biologists have used the term Mycetozoa for:

 
 
 
 

564. Viruses have:

 
 
 
 

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

 
 
 
 

566. Vascular cryptogams is the term used for:

 
 
 
 

567. The coralloid roots are :

 
 
 
 

568. Chemosynthetic bacteria are:

 
 
 
 

569. Water-borne bacterial diseases are:

 
 
 
 

570. Ovary is absent in :

 
 
 
 

571. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

573. The genetic material of poxvirus is:

 
 
 
 

574. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. Leaf spot of groundnut is caused by :

 
 
 
 

579. Fruits are not found in:

 
 
 
 

580. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

585. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

587. In Gymnosperms endosperm is a:

 
 
 
 

588. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

590. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. In tracheophyta:

 
 
 
 

600. Which of the following lichens is harmful?

 
 
 
 

601. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

603. Roots are absent in :

 
 
 
 

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

 
 
 
 

605. Ergot is obtained from :

 
 
 
 

606. The male gametes of Pinus are :

 
 
 
 

607. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

609. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. Which of the following statements is not correct?

 
 
 
 

613. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

615. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

617. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

619. The chloroplast in Ulothrix is :

 
 
 
 

620. Fern prothallus produces:

 
 
 
 

621. Which have the largest antherozoid?

 
 
 
 

622. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

623. The microsporophylls on the cone of Cycas are :

 
 
 
 

624. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. The nucleus of bacteria is:

 
 
 
 

628. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

630. Spores of which plants have chloroplast:

 
 
 
 

631. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. Nannandria are:

 
 
 
 

638. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

641. Water bloom is generally caused by :

 
 
 
 

642. Which of the following are included in Tracheophyta?

 
 
 
 

643. Red rot of sugarcane is caused by :

 
 
 
 

644. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Lichens are the indicator of pollution :

 
 
 
 

653. Reserve food in Euglena is:

 
 
 
 

654. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

656. Lichen show :

 
 
 
 

657. Redness of red sea is due to :

 
 
 
 

658. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Zoogametes are not found in:

 
 
 
 

662. The disease apple scab is caused by:

 
 
 
 

663. Viroids have:

 
 
 
 

664. Funaria is :

 
 
 
 

665. 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:

 
 
 
 

666. Most primitive embryophytes are placed in :

 
 
 
 

667. Bryophyta have been placed in cryptogams because:

 
 
 
 

668. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

670. The ascus of yeast contains:

 
 
 
 

671. Who named prion?

 
 
 
 

672. Woody climbers are known as :

 
 
 
 

673. What are Cyanobacteria?

 
 
 
 

674. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Heterocysts are found in :

 
 
 
 

680. Rhizoids of Riccia are :

 
 
 
 

681. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. Azolla and Salvinia both are:

 
 
 
 

685. 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:

 
 
 
 

686. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

688. Ergot of rye is caused by:

 
 
 
 

689. Male gametophyte of Selaginella is found:

 
 
 
 

690. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

691. Embryophyta includes :

 
 
 
 

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

 
 
 
 

693. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

695. Pythium debaryanum is the causative agent of:

 
 
 
 

696. Cycas is different from mango in :

 
 
 
 

697. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

699. The sporangia of Selaginella are attached:

 
 
 
 

700. Standard size of a herbarium sheet is:

 
 
 
 

701. Most of the lichens are composed of :

 
 
 
 

702. The chief characteristic of bryophyta is that :

 
 
 
 

703. In Cycas the fertilization is:

 
 
 
 

704. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

706. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

711. In angiosperms double fertilization represents:

 
 
 
 

712. Discovery of penicillin was based on:

 
 
 
 

713. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Cryptogams include :

 
 
 
 

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

 
 
 
 

722. Amoeba is a member of the phylum:

 
 
 
 

723. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. The mode of nutrition of bacteria is usually:

 
 
 
 

730. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

731. Virus and bacteriophage are made-up of:

 
 
 
 

732. Mycoplasma was discovered by:

 
 
 
 

733. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

741. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. Winged seeds are found in :

 
 
 
 

745. The teeth of peristome of Funaria are :

 
 
 
 

746. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

751. Green plants are classified as :

 
 
 
 

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

 
 
 
 

753. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

755. Fertility of the soil is increased by:

 
 
 
 

756. Bacteria were first discovered by:

 
 
 
 

757. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

759. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

760. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

764. Absorptive nutrition is:

 
 
 
 

765. Antibiotics cure the disease by:

 
 
 
 

766. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

771. Ovules are not found enclosed in ovary in :

 
 
 
 

772. The similarity between cyanobacteria and bacteria:

 
 
 
 

773. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Fruiting body of lichens is :

 
 
 
 

777. In Funaria, calyptra is derived from :

 
 
 
 

778. Virion refers to:

 
 
 
 

779. Cleavage polyembryony is found in :

 
 
 
 

780. John Hutchinson divided dicots into two divisions:

 
 
 
 

781. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

783. Black rust of wheat is caused by:

 
 
 
 

784. Coenogamete is found in:

 
 
 
 

785. Pinus microsporophyll bears:

 
 
 
 

786. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

791. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. Meristele of fern is:

 
 
 
 

796. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

798. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

799. Selaginella differs from Moss in having:

 
 
 
 

800. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

801. Polystelic condition is found in:

 
 
 
 

802. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

804. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

806. Sporophyte of Funaria is :

 
 
 
 

807. Cyathia is characterized by:

 
 
 
 

808. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

810. The source of litmus is :

 
 
 
 

811. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

813. Soil fertility is lost by the activities of:

 
 
 
 

814. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

818. The spur of Pinus roxburghii has :

 
 
 
 

819. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

821. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. The spermatozoids of Cycas are :

 
 
 
 

825. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Pinus is:

 
 
 
 

829. The seedless plants which possess vascular tissues are:

 
 
 
 

830. Little leaf disease of Brinjal is caused by:

 
 
 
 

831. Fruits are not found in Cycas because:

 
 
 
 

832. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. In moss, sporogenous tissue arises from:

 
 
 
 

837. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

839. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

841. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

843. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

845. Clostridium can:

 
 
 
 

846. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. Parmelia belongs to :

 
 
 
 

850. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Typhoid in man is caused by:

 
 
 
 

855. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

858. In moss, stomata are found:

 
 
 
 

859. The zoospores of Ulothrix are :

 
 
 
 

860. Which is an edible fungus?

 
 
 
 

861. The leafy fern plant represents the:

 
 
 
 

862. Azolla growing in paddy fields helps in:

 
 
 
 

863. The zygospore in Rhizopus on germination forms:

 
 
 
 

864. Which organisms are the oldest life forms?