Quiz_Random

1. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

3. The leafy fern plant represents the:

 
 
 
 

4. The word “sea weeds” is used for:

 
 
 
 

5. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

7. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

8. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Reserve food in Euglena is:

 
 
 
 

12. Soil fertility is lost by the activities of:

 
 
 
 

13. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

16. Penicillin is obtained from:

 
 
 
 

17. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Nitrifying bacteria play an important role by converting:

 
 
 
 

21. Fruits are not found in Cycas because:

 
 
 
 

22. Fern prothallus is:

 
 
 
 

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

 
 
 
 

24. All protozoans possess:

 
 
 
 

25. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Synzoospore is produced in:

 
 
 
 

30. Early blight of potato is caused by:

 
 
 
 

31. Which of the following are included in Tracheophyta?

 
 
 
 

32. Bacteria are placed under:

 
 
 
 

33. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

35. The megasporangium of Selaginella is:

 
 
 
 

36. The genetic material of poxvirus is:

 
 
 
 

37. Sleeping sickness disease in man is caused by:

 
 
 
 

38. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Which of the following are absent in Mycoplasma?

 
 
 
 

42. E coli is a:

 
 
 
 

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

 
 
 
 

44. Nannandria are:

 
 
 
 

45. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Which is a tautonym?

 
 
 
 

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

 
 
 
 

51. Some biologists have used the term Mycetozoa for:

 
 
 
 

52. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

54. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

60. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

62. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

64. Pinus microsporophyll bears:

 
 
 
 

65.

 

66. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Cocci types of bacteria are:

 
 
 
 

70. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. 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:

 
 
 
 

78. Embryo formation is not known in :

 
 
 
 

79. In Herpes virus DNA is:

 
 
 
 

80. Leprosy is caused by:

 
 
 
 

81. Which of the following are included in Tracheophyta?

 
 
 
 

82. Genetic material of TMV is:

 
 
 
 

83. Which of the following have a prokaryotic cell?

 
 
 
 

84. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

86. Which of the following statements is not correct?

 
 
 
 

87. The mycelium of Rhizopus is:

 
 
 
 

88. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

89. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

91. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

93. Clostridium can:

 
 
 
 

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

 
 
 
 

95. Yeast is a source of:

 
 
 
 

96. In moss, conducting tissue is made up of

 
 
 
 

97. The sporangiophores in Rhizopus are:

 
 
 
 

98. Spermatophyta are characterized by producing:

 
 
 
 

99. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

101. Interferon is a:

 
 
 
 

102. Most resistant spore in bacteria is:

 
 
 
 

103. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

109. Germ theory of disease was proposed by:

 
 
 
 

110. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

112. Fairy ring is the name given to:

 
 
 
 

113. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

119. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

121. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

123. Select the wrong statement:

 
 
 
 

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

 
 
 
 

125. The chromosomal number in:

 
 
 
 

126. Liverworts are included in :

 
 
 
 

127. How is moss different from fern?

 
 
 
 

128. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

130. Which of the following is sago palm?

 
 
 
 

131. The roots of Cycas are :

 
 
 
 

132. The fungi are mostly:

 
 
 
 

133. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

144. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

146. Oswald Tippo’s classification was based on :

 
 
 
 

147. Most common type of conjugation in Spirogyra is :

 
 
 
 

148. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

150. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

152. Lichens show :

 
 
 
 

153. Generic name of mango is:

 
 
 
 

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

 
 
 
 

155. The phloem of vascular system of Cycas is :

 
 
 
 

156. Protists which are diploid reproduce sexually by:

 
 
 
 

157. Halophiles are the bacteria that require for growth:

 
 
 
 

158. Aflatoxin is produced as a product in :

 
 
 
 

159. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

161. In Cycas which structure is equivalent to stamen?

 
 
 
 

162. Anoxygenic photosynthesis occurs in:

 
 
 
 

163. Facultative parasite is:

 
 
 
 

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

 
 
 
 

165. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

167.

168. In moss, stomata are found:

 
 
 
 

169. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. The male gametes of Pinus are :

 
 
 
 

174. The gametophyte of fern bears:

 
 
 
 

175. The spermatozoids of Cycas are :

 
 
 
 

176. Smallpox is caused by:

 
 
 
 

177. In Pteris, the archegonia are present:

 
 
 
 

178. Bacteriophages have been used as:

 
 
 
 

179. The largest alga is:

 
 
 
 

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

 
 
 
 

181. Psilotum is:

 
 
 
 

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

 
 
 
 

183. The leaves of Funaria are :

 
 
 
 

184. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Tautonyms are illegitimate in:

 
 
 
 

193. Lichens are the indicator of pollution :

 
 
 
 

194. In tracheophyta:

 
 
 
 

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

 
 
 
 

196. An alga which is rich in proteins:

 
 
 
 

197. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Most of the algae are :

 
 
 
 

202. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Indusium in Dryopteris is:

 
 
 
 

206. Which is absent from the xylem of Cycas?

 
 
 
 

207. Rhizoids of Riccia are :

 
 
 
 

208. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

211. Rhizopus and yeast are usually:

 
 
 
 

212. Heterosporous pteridophytes always form:

 
 
 
 

213. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

215. Cycas is different from mango in :

 
 
 
 

216. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

218. Rhizophore of Selaginella is:

 
 
 
 

219. Leaf spot of groundnut is caused by :

 
 
 
 

220. Viroids have:

 
 
 
 

221. The gametophyte of fern is as:

 
 
 
 

222. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

224. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

226. Diploxylic vascular bundles are found in:

 
 
 
 

227. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

229. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

231. The alga, Spirogyra are found in :

 
 
 
 

232. Photosynthetic bacteria have:

 
 
 
 

233. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

236. Water-borne bacterial diseases are:

 
 
 
 

237. Metulae are found in:

 
 
 
 

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

 
 
 
 

239. Lichen show :

 
 
 
 

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

 
 
 
 

241. Placenta in fern is:

 
 
 
 

242. Parmelia belongs to :

 
 
 
 

243. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. Zoogametes are not found in:

 
 
 
 

248. Male gametes in Dryopteris are:

 
 
 
 

249. The young leaves of Cycas have :

 
 
 
 

250. The tree fern is:

 
 
 
 

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

 
 
 
 

252. Green plants are classified as:

 
 
 
 

253. What is streptomycin?

 
 
 
 

254. Choose the correct statement about Spirogyra:

 
 
 
 

255. The most important property of yeast is:

 
 
 
 

256. The chloroplast in Ulothrix is :

 
 
 
 

257. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. Pneumonia is caused by:

 
 
 
 

264. The archegonia in Selaginella develop on:

 
 
 
 

265. The fern plant is:

 
 
 
 

266. What is special feature of fern archegonia?

 
 
 
 

267. Pasteurized milk is:

 
 
 
 

268. Which of the following does not contain chlorophyll?

 
 
 
 

269. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

274. Roots are absent in :

 
 
 
 

275. The lambda phase is a:

 
 
 
 

276. Bacteria were first discovered by:

 
 
 
 

277. Cryptogams include :

 
 
 
 

278. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

280. Fern prothallus produces:

 
 
 
 

281. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. The smallest unit of classification is:

 
 
 
 

286. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. In Cycas:

 
 
 
 

290. Oswald Tippo’s classification is:

 
 
 
 

291. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. The plants of Funaria grow :

 
 
 
 

296. The sexual reproductive organs in Rhizopus are:

 
 
 
 

297. In moss, calyptra is formed from:

 
 
 
 

298. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

303. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

305. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

309. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. The gametophyte produced by apospory is :

 
 
 
 

316. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Downy mildew disease is caused by :

 
 
 
 

320. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

324. The leaves of Funaria are :

 
 
 
 

325. Vascular cryptogam is the term used for :

 
 
 
 

326. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

328. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

329. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

337. In Cycas microsporangia are borne on:

 
 
 
 

338. The prothallus of fern is:

 
 
 
 

339. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. The sori in Dryopteris are found on:

 
 
 
 

343. In moss, reduction division occurs in :

 
 
 
 

344. Winged seeds are found in :

 
 
 
 

345. Pteridophyta are also called:

 
 
 
 

346. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Redness of red sea is due to :

 
 
 
 

351. Ulothrix produces :

 
 
 
 

352. Which of the following have algal zone?

 
 
 
 

353. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. Cycas is :

 
 
 
 

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

 
 
 
 

358. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. Pythium debaryanum is the causative agent of:

 
 
 
 

362. Ergot of rye is caused by:

 
 
 
 

363. The ascus of yeast contains:

 
 
 
 

364. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. Viruses have:

 
 
 
 

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

 
 
 
 

369. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

371. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

373. Azolla growing in paddy fields helps in:

 
 
 
 

374. Embryophyta includes:

 
 
 
 

375. Ethylene oxide is widely used to:

 
 
 
 

376. Proembryo in Pinus is :

 
 
 
 

377. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. 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?

 
 
 
 

384. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

386. Sexual reproduction in Rhizopus is by:

 
 
 
 

387. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

392. Sporophyte of fern is:

 
 
 
 

393. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

394. Plasmids are:

 
 
 
 

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

 
 
 
 

396. All archaebacteria lack:

 
 
 
 

397. The first to isolate a plant virus was:

 
 
 
 

398. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

400. Which of the following lichens is harmful?

 
 
 
 

401. Discovery of penicillin was based on:

 
 
 
 

402. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

404. Economic importance of bacteria lies in their being:

 
 
 
 

405. In moss, sporogenous tissue arises from:

 
 
 
 

406. Lichens reproduce by :

 
 
 
 

407. Cycas plant in appearance resembles :

 
 
 
 

408. Longest known virus is:

 
 
 
 

409. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

411. Late blight of potato is caused by:

 
 
 
 

412. In Gymnocarpeae the fruiting body is :

 
 
 
 

413. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

415. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. The Rhizopus is:

 
 
 
 

419. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

421. Centric discoid form of diatom is:

 
 
 
 

422. Sexual reproduction of lichen is due to :

 
 
 
 

423. Most primitive embryophytes are placed in :

 
 
 
 

424. Cycas revoluta is widely grown as :

 
 
 
 

425. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

428. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

431. The sporophyte of Riccia is represented by :

 
 
 
 

432. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

440. 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?

 
 
 
 

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

 
 
 
 

442. Which lichen is called Reindeer moss?

 
 
 
 

443. Pinus gerardiana is :

 
 
 
 

444. Kuru, a human disease is caused by:

 
 
 
 

445. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

447. Ovary is absent in:

 
 
 
 

448. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

450. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. Milk is converted to curd by:

 
 
 
 

454. Antibiotics cure the disease by:

 
 
 
 

455. Mucilaginous canals in Cycas are found in :

 
 
 
 

456. Bryophyta have a special character from other plants:

 
 
 
 

457. Viruses are considered to be:

 
 
 
 

458. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

464. Pteridophytes are also known as :

 
 
 
 

465. Water bloom is generally caused by :

 
 
 
 

466. Methanogens belong to:

 
 
 
 

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

 
 
 
 

468. The upper region of moss capsule is :

 
 
 
 

469. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

473. Reproduction in Rhizopus is:

 
 
 
 

474. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

476. What is absent in Deuteromycetes?

 
 
 
 

477. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. Spirogyra represents the :

 
 
 
 

481. The chief characteristic of bryophyta is that :

 
 
 
 

482. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

484. Gram stain is used to:

 
 
 
 

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

 
 
 
 

486. Who discovered cyanophages?

 
 
 
 

487. 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:

 
 
 
 

488. Spores of which plants have chloroplast:

 
 
 
 

489. The antherozoids of Funaria are :

 
 
 
 

490. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

495. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

497. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

499. Mycoplasma was discovered by:

 
 
 
 

500. Yeast grows more rapidly in:

 
 
 
 

501. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

503. Yeast belongs to class:

 
 
 
 

504. Fruits are not found in :

 
 
 
 

505. Typhoid in man is caused by:

 
 
 
 

506. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

508. Which one of the following statement is wrong?

 
 
 
 

509. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

511. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

513. The order generally ends with:

 
 
 
 

514. Quarantine regulations are concerned with:

 
 
 
 

515. The vascular bundles of Cycas stem are :

 
 
 
 

516. Pasteur is famous for his:

 
 
 
 

517. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. Ovules are not found enclosed in ovary in :

 
 
 
 

521. Which of the following is a parasitic algae?

 
 
 
 

522. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

528. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. Bacteria are found everywhere, except:

 
 
 
 

533. The zoospores of Ulothrix are :

 
 
 
 

534. Funaria can be differentiated from Cycas :

 
 
 
 

535. Which is the correct statement about Selaginella?

 
 
 
 

536. In Cycas the fertilization is:

 
 
 
 

537. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

542. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

544. The mode of nutrition of bacteria is usually:

 
 
 
 

545. Multicellular and jacketed sex organs are found in :

 
 
 
 

546. The fungi that grow on wood are called:

 
 
 
 

547. The similarity between cyanobacteria and bacteria:

 
 
 
 

548. Heterospory is the production of:

 
 
 
 

549. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

550. Which of the following shows heterotrichous habit?

 
 
 
 

551. Bacteriophage consists of:

 
 
 
 

552. Which class of Protozoa includes all parasitic forms?

 
 
 
 

553. 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:

 
 
 
 

554.

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

 
 
 
 

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

 
 
 
 

557. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

559. Meristele of fern is:

 
 
 
 

560. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

562. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

564. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

566. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

568. Water-net is the name of:

 
 
 
 

569. Which organisms are the oldest life forms?

 
 
 
 

570. Photosynthetic protists belong to:

 
 
 
 

571. Who among the following discovered virus?

 
 
 
 

572. The megaspore of Selaginella on germination produces:

 
 
 
 

573. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

575. Pythium debaryanum is the causative agent of:

 
 
 
 

576. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

579. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

581. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

584. Small epidermal swellings due to infection are called :

 
 
 
 

585. The ferns are usually found:

 
 
 
 

586. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. Which statement is wrong in regard to bacteria?

 
 
 
 

591. In a bacteriophage, DNA is present in:

 
 
 
 

592. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

594. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

599. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

601. . Tapetum develops in:

 
 
 
 

602. Citrus canker is caused by:

 
 
 
 

603. Enzymes are absent in:

 
 
 
 

604. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

606. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Infective part of virus was discovered by:

 
 
 
 

610. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. Smut of maize is caused by :

 
 
 
 

615. Mycoplasma contains:

 
 
 
 

616. Fern plants are:

 
 
 
 

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

 
 
 
 

618. Meiosis in Ulothrix takes place:

 
 
 
 

619. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Mycoplasma are sensitive to:

 
 
 
 

623. Who discovered heterothallism in fungi?

 
 
 
 

624. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

625. Lichens reproduce by :

 
 
 
 

626. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

628. White rust of crucifers is caused by:

 
 
 
 

629. Citrus canker is caused by :

 
 
 
 

630. Which is a fungicide?

 
 
 
 

631. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

633. In dinoflagellates, the two flagella are:

 
 
 
 

634. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

636. Etiology includes the study of :

 
 
 
 

637. Bivalved siliceous shell or frustule occur in:

 
 
 
 

638. The development of sporangium in Selaginella is:

 
 
 
 

639. The flagella of Chlamydomonas are:

 
 
 
 

640. Which causes red tide?

 
 
 
 

641. Cycas is:

 
 
 
 

642. Where does meiosis occur in yeast?

 
 
 
 

643. The sporophyte of Riccia is :

 
 
 
 

644. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653. The teeth of peristome of Funaria are :

 
 
 
 

654. Transfusion tissue is present in the leaflet of:

 
 
 
 

655. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

657. Lichens are indicators of :

 
 
 
 

658. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

660. Pinus is:

 
 
 
 

661. Germination of the seed of Pinus is :

 
 
 
 

662. The largest known bacterium is:

 
 
 
 

663. In moss, sporophyte is formed on:

 
 
 
 

664. The smallest bacterium is:

 
 
 
 

665. Ginkgo biloba is a:

 
 
 
 

666. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

667. The sporangia of Selaginella are attached:

 
 
 
 

668. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

670. Bacteria which are spherical are called:

 
 
 
 

671. Little leaf disease of Brinjal is caused by:

 
 
 
 

672. Lichens are ecologically important because :

 
 
 
 

673. Triple antigen injection or vaccine are for:

 
 
 
 

674. Black rust of wheat is caused by:

 
 
 
 

675. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

677. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

682. Cyathia is characterized by:

 
 
 
 

683. Diphtheria is caused by:

 
 
 
 

684. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

689. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Cyanophage is a virus that attacks:

 
 
 
 

694. The chloroplast of Chlamydomonas are:

 
 
 
 

695. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Absorptive nutrition is:

 
 
 
 

707. The root nodules of leguminous plants contain:

 
 
 
 

708. Lichens are pioneers of vegetation in a :

 
 
 
 

709. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

713. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Facultative saprophyte is:

 
 
 
 

717. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

719. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

721. Virion refers to:

 
 
 
 

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

 
 
 
 

723. Among the algae kelps are :

 
 
 
 

724. An Hfr bacterium is one that contains:

 
 
 
 

725. Detailed study of bacteriophage was made by:

 
 
 
 

726. The disease symptom necrosis refers to :

 
 
 
 

727. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Mixed cropping helps :

 
 
 
 

731. The fungi are usually:

 
 
 
 

732. How a fern differs from a moss?

 
 
 
 

733. The spur of Pinus roxburghii has :

 
 
 
 

734. Funaria is :

 
 
 
 

735. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Most of the lichens are composed of :

 
 
 
 

740. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

742. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

743. 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:

 
 
 
 

744. The zygospore in Rhizopus on germination forms:

 
 
 
 

745. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. John Hutchinson divided dicots into two divisions:

 
 
 
 

750. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

752. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

757. Cleavage polyembryony is found in :

 
 
 
 

758. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

760. Standard size of a herbarium sheet is:

 
 
 
 

761. What is the role of nitrifying bacteria?

 
 
 
 

762. Virus and bacteriophage are made-up of:

 
 
 
 

763. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Some diseases caused by bacteria are:

 
 
 
 

767. Vegetative reproduction in Cycas is by means of :

 
 
 
 

768. The source of litmus is :

 
 
 
 

769. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

771. Antibiotic has been extracted from :

 
 
 
 

772. Pasteurization of milk involves heating for:

 
 
 
 

773. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Vascular tissue is found in :

 
 
 
 

777. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

778. Bryophyta have been placed in cryptogams because:

 
 
 
 

779. Male gametophyte of Selaginella is found:

 
 
 
 

780. Helotism word is used for the symbiosis between :

 
 
 
 

781. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. The term stele was given by:

 
 
 
 

788. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

790. LSD is:

 
 
 
 

791. Climbers are found in genus:

 
 
 
 

792. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

793. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. The stele of Dryopteris is a:

 
 
 
 

797. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

803. The Rhizopus gametes are formed in:

 
 
 
 

804. Which of the following is true for viruses?

 
 
 
 

805. Fruits are not found in:

 
 
 
 

806. In Selaginella, the microsporangia are:

 
 
 
 

807. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

809. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

813. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

815. 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:

 
 
 
 

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

 
 
 
 

817. Lichens form the first community in

 
 
 
 

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

 
 
 
 

819. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

821. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

823. Simple polyembryony is found in :

 
 
 
 

824. The fungi used as food are:

 
 
 
 

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

 
 
 
 

826. Chemosynthetic bacteria are:

 
 
 
 

827. Aflatoxin is produced by:

 
 
 
 

828. In a diplontic life cycle:

 
 
 
 

829. 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:

 
 
 
 

830. Which of the following is a heterosporous pteridophyte?

 
 
 
 

831. Total parasites belong to:

 
 
 
 

832. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. What are plasmids?

 
 
 
 

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

 
 
 
 

840. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

842. NBG of Lucknow is now named as:

 
 
 
 

843. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

845.

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

 
 
 
 

847. Club moss and Peat moss belong to:

 
 
 
 

848. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. Pollination in Pinus is :

 
 
 
 

852. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Coenogamete is found in:

 
 
 
 

856. Common phycobiont in a lichen is :

 
 
 
 

857. Black rust of wheat is caused by:

 
 
 
 

858. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Who named prion?

 
 
 
 

863. Protozoans are considered animals because these are:

 
 
 
 

864. Botulism is a: