Quiz_Random

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

 
 
 
 

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

 
 
 
 

3. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

5. The gametophyte produced by apospory is :

 
 
 
 

6. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

7. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Sporophyte of fern is:

 
 
 
 

11. A gill of Agaricus:

 
 
 
 

12. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

13. Spermatophyta are characterized by producing:

 
 
 
 

14. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

16. The prothallus of fern represents the plant:

 
 
 
 

17. Isomorphic type alternation of generation is found in:

 
 
 
 

18. Photoautotrophic bacteria have:

 
 
 
 

19. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

21. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

23. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Pasteurized milk is:

 
 
 
 

29. Which of the following is a monocot?

 
 
 
 

30. Bacteria which are spherical are called:

 
 
 
 

31. All protozoans possess:

 
 
 
 

32. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

34. The fungi that grow on wood are called:

 
 
 
 

35. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Water-net is the name of:

 
 
 
 

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

 
 
 
 

40. Roots are absent in :

 
 
 
 

41. The disease symptom necrosis refers to :

 
 
 
 

42. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

44. The largest alga is:

 
 
 
 

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

 
 
 
 

46. Bivalved siliceous shell or frustule occur in:

 
 
 
 

47. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

48. Heterospory and ligulate leaves are a feature of:

 
 
 
 

49. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. The gametophyte of fern bears:

 
 
 
 

56. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

58. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

59. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

65. Fruits are not found in:

 
 
 
 

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

 
 
 
 

67. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

69. Mostly type of zygospore in Ulothrix is:

 
 
 
 

70. Absorptive nutrition is:

 
 
 
 

71. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Protistan algae obtain their food as:

 
 
 
 

77. Photosynthetic protists belong to:

 
 
 
 

78. Which is a tautonym?

 
 
 
 

79. 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:

 
 
 
 

80. Economic importance of bacteria lies in their being:

 
 
 
 

81. Most appropriate word for protozoans is:

 
 
 
 

82. Which one of the following is a monocot?

 
 
 
 

83. The gametophyte of moss has distinct phases :

 
 
 
 

84. Cycas revoluta is widely grown as :

 
 
 
 

85. Oswald Tippo’s classification is:

 
 
 
 

86. Which lichen is called Reindeer moss?

 
 
 
 

87. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

89. Total parasites belong to:

 
 
 
 

90. The teeth of peristome of Funaria are :

 
 
 
 

91. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Ergot is obtained from :

 
 
 
 

99. Which is not found in bacteria?

 
 
 
 

100. Which is a redwood tree?

 
 
 
 

101. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

108. Cyathia is characterized by:

 
 
 
 

109. Clostridium can:

 
 
 
 

110. Each chloroplast in Spirogyra bears :

 
 
 
 

111. Anoxygenic photosynthesis occurs in:

 
 
 
 

112. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

117. Mycoplasma are:

 
 
 
 

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

 
 
 
 

119. The fern plant is:

 
 
 
 

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

 
 
 
 

121. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

123. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

125. Antibiotic has been extracted from :

 
 
 
 

126. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

131. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

132. The ferns are usually found:

 
 
 
 

133. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

135. Halophiles are the bacteria that require for growth:

 
 
 
 

136. Who among the following discovered virus?

 
 
 
 

137. Mycoplasmas are not viruses in nature because:

 
 
 
 

138. Polystelic condition is found in:

 
 
 
 

139. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

140. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

142. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

145.

 

146. Antibiotics cure the disease by:

 
 
 
 

147. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

150. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

152. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

154. Smut of maize is caused by :

 
 
 
 

155. Meiosis in Ulothrix takes place:

 
 
 
 

156. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

158. Lichens show :

 
 
 
 

159. Woody climbers are known as :

 
 
 
 

160. The middle sterile part of capsule is called:

 
 
 
 

161. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

163. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

165. Cell walls of Gram-positive bacteria contain:

 
 
 
 

166. The development of Selaginella embryo is:

 
 
 
 

167. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Ovules are not found enclosed in ovary in :

 
 
 
 

174. Ovules are not found enclosed in ovary of:

 
 
 
 

175. Rhizopus belongs to:

 
 
 
 

176. The zygospore in Rhizopus on germination forms:

 
 
 
 

177. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

179. Virus and bacteriophage are made-up of:

 
 
 
 

180. Viroids have:

 
 
 
 

181. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

183. Germ theory of disease was proposed by:

 
 
 
 

184. The megaspore of Selaginella on germination produces:

 
 
 
 

185. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

187. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

189. Which one of the following statement is wrong?

 
 
 
 

190. Which of the following are included in Tracheophyta?

 
 
 
 

191. The male gametes of Pinus are :

 
 
 
 

192. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

193. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. The term stele was given by:

 
 
 
 

197. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

199. Embryophyta includes:

 
 
 
 

200. Fern prothallus is:

 
 
 
 

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

 
 
 
 

202. Bentham and Hooker placed gymnosperms:

 
 
 
 

203. Spirogyra differs from moss protonema in having :

 
 
 
 

204. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

206. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. What are plasmids?

 
 
 
 

210. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

212. The smallest bacterium is:

 
 
 
 

213. Cryptogams include :

 
 
 
 

214. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

216. The chief characteristic of class Ascomycetes is:

 
 
 
 

217. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

219. Reserve food in Euglena is:

 
 
 
 

220. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. Which of the following does not contain chlorophyll?

 
 
 
 

227. Cellular slime mold is:

 
 
 
 

228. Which of the following is true for viruses?

 
 
 
 

229. The chloroplast of Chlamydomonas are:

 
 
 
 

230. Discovery of penicillin was based on:

 
 
 
 

231. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Chemosynthetic bacteria are:

 
 
 
 

239. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Red rot of sugarcane is caused by :

 
 
 
 

243. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

245. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

249. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. Most primitive group of vascular plants are:

 
 
 
 

253. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Viruses have:

 
 
 
 

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

 
 
 
 

258. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

260. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

262. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. The seedless plants which possess vascular tissues are:

 
 
 
 

267. Simple polyembryony is found in :

 
 
 
 

268. Lichens form the first community in

 
 
 
 

269. Fairy ring is the name given to:

 
 
 
 

270. Etiology includes the study of :

 
 
 
 

271. Most primitive kind of flower is represented by:

 
 
 
 

272. Nannandria are:

 
 
 
 

273. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

275. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

277. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

283. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

285. Botulism is a:

 
 
 
 

286. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

288. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. Pythium debaryanum is the causative agent of:

 
 
 
 

296. Cycas is:

 
 
 
 

297. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

299. White rust of crucifers is caused by:

 
 
 
 

300. 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:

 
 
 
 

301. Generic name of mango is:

 
 
 
 

302. Which of the following have algal zone?

 
 
 
 

303. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

305. In a diplontic life cycle:

 
 
 
 

306. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. Which condition is found in Cycas?

 
 
 
 

313. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

315. Most primitive embryophytes are placed in:

 
 
 
 

316. Black rust of wheat is caused by:

 
 
 
 

317. The most primitive vascular plants is:

 
 
 
 

318. The sporangia of Selaginella are attached:

 
 
 
 

319. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

321. The rhizoids of Funaria are :

 
 
 
 

322. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

327. 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:

 
 
 
 

328. Some diseases caused by bacteria are:

 
 
 
 

329. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

337. Azolla and Salvinia both are:

 
 
 
 

338. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

340. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. Cyanophage is a virus that attacks:

 
 
 
 

345. Ovary is absent in :

 
 
 
 

346. What is special feature of fern archegonia?

 
 
 
 

347. Streptomycin is obtained from:

 
 
 
 

348. The order generally ends with:

 
 
 
 

349. Cycas plant in appearance resembles :

 
 
 
 

350. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

352. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

354. The stele of Dryopteris is a:

 
 
 
 

355. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

357. Aflatoxin is produced as a product in :

 
 
 
 

358. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

367. Agar-agar is obtained from:

 
 
 
 

368. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. In Gymnocarpeae the fruiting body is :

 
 
 
 

372. Linnaeus is credited with introducing:

 
 
 
 

373. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

375. Heterotrichous habit means :

 
 
 
 

376. Most of the algae are :

 
 
 
 

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

 
 
 
 

378. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

381. Cleavage polyembryony is found in :

 
 
 
 

382. Reproduction in Cycas takes place by :

 
 
 
 

383. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

387. Seeds are characteristically found in :

 
 
 
 

388. In Cycas which structure is equivalent to stamen?

 
 
 
 

389.

390. The sporophyte of Riccia is :

 
 
 
 

391. In Funaria :

 
 
 
 

392. The fungi are mostly:

 
 
 
 

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

 
 
 
 

394. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

396. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

398. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

400. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

402. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

403. Which causes red tide?

 
 
 
 

404. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. In Cycas:

 
 
 
 

409. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

411. The zoospores of Ulothrix are :

 
 
 
 

412. Winged seeds are found in :

 
 
 
 

413. The fungi are usually:

 
 
 
 

414. The vascular bundles of Cycas stem are :

 
 
 
 

415. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. The root nodules of leguminous plants contain:

 
 
 
 

419. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

424. The fungi used as food are:

 
 
 
 

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

 
 
 
 

426. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

428. In Cycas the fertilization is:

 
 
 
 

429. Acellular slime mold is/are:

 
 
 
 

430. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

432. Select the wrong statement:

 
 
 
 

433. Which of the following is true for Selaginella?

 
 
 
 

434. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

436. Red rot of sugarcane is caused by :

 
 
 
 

437. Winged pollen grains are found in :

 
 
 
 

438. Little leaf disease of Brinjal is caused by:

 
 
 
 

439. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. Club moss is the common name of :

 
 
 
 

445. Ginkgo biloba is a:

 
 
 
 

446. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

454. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. Small epidermal swellings due to infection are called :

 
 
 
 

459. An alga which is rich in proteins:

 
 
 
 

460. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

462. Desired type of Cycas can be grown by:

 
 
 
 

463. The disease apple scab is caused by:

 
 
 
 

464. Which organisms are the oldest life forms?

 
 
 
 

465. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

471. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

479. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

481. Oswald Tippo’s classification was based on :

 
 
 
 

482. Selaginella differs from Moss in having:

 
 
 
 

483. Which is absent from the xylem of Cycas?

 
 
 
 

484. The leafy fern plant represents the:

 
 
 
 

485. In Gymnosperms endosperm is a:

 
 
 
 

486. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. Club moss and Peat moss belong to:

 
 
 
 

490. Gymnosperms could also be called as:

 
 
 
 

491. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

496. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

499. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

501. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

503. Seeds are characteristically found in:

 
 
 
 

504. In moss, sporophyte is formed on:

 
 
 
 

505. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

507. Viruses are considered to be:

 
 
 
 

508. Green plants are classified as :

 
 
 
 

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

 
 
 
 

510. Bacteria are found everywhere, except:

 
 
 
 

511. Metulae are found in:

 
 
 
 

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

 
 
 
 

513. Chief constituents of bordeaux mixture are :

 
 
 
 

514. Coenogamete is found in:

 
 
 
 

515. Cycas is :

 
 
 
 

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

 
 
 
 

517. Who discovered streptomycin?

 
 
 
 

518. Sexual reproduction of lichen is due to :

 
 
 
 

519. Botulinum toxin effects:

 
 
 
 

520. Asexual reproductive body of Volvox is called:

 
 
 
 

521. Cycas is similar to a mustard plant :

 
 
 
 

522. The spur of Pinus roxburghii has :

 
 
 
 

523. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

525. Pneumonia is caused by:

 
 
 
 

526. 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:

 
 
 
 

527. Which of the following statement is correct?

 
 
 
 

528. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. The Rhizopus gametes are formed in:

 
 
 
 

535. The flagella of Chlamydomonas are:

 
 
 
 

536. Fruits are not found in Cycas because:

 
 
 
 

537. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

539. Sexual reproduction in Rhizopus is by:

 
 
 
 

540. Pinus gerardiana is :

 
 
 
 

541. Facultative saprophyte is:

 
 
 
 

542. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. Mixed cropping helps :

 
 
 
 

548. The source of litmus is :

 
 
 
 

549. Majority of lichens are :

 
 
 
 

550. Male gametes in Dryopteris are:

 
 
 
 

551. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

552. The coralloid roots are :

 
 
 
 

553. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

555. Who discovered cyanophages?

 
 
 
 

556. Circular DNA is seen in:

 
 
 
 

557. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

559. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

561. In a bacteriophage, DNA is present in:

 
 
 
 

562. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

564. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. 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?

 
 
 
 

568. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

570. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

573. Citrus canker is caused by :

 
 
 
 

574. The sori in Dryopteris are found on:

 
 
 
 

575. How is moss different from fern?

 
 
 
 

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

 
 
 
 

577. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

579. Infective part of virus was discovered by:

 
 
 
 

580. Pteridophytes are also known as :

 
 
 
 

581. Ectocarpus produces:

 
 
 
 

582. In tracheophyta:

 
 
 
 

583. Pollination drop is:

 
 
 
 

584. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

592. All algae have:

 
 
 
 

593. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Standard size of a herbarium sheet is:

 
 
 
 

597. Wine turns sour because of:

 
 
 
 

598. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. The Rhizopus is:

 
 
 
 

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

 
 
 
 

603. Rhizophore of Selaginella is:

 
 
 
 

604. The antherozoids of Funaria are :

 
 
 
 

605. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

607. Photosynthetic bacteria have:

 
 
 
 

608. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

610. All archaebacteria lack:

 
 
 
 

611. The chloroplast in Ulothrix is :

 
 
 
 

612. Methanogens belong to:

 
 
 
 

613. Heterocysts are found in :

 
 
 
 

614. The plants of Funaria grow :

 
 
 
 

615. Plasmids are:

 
 
 
 

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

 
 
 
 

617. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

621. Reproduction in Rhizopus is:

 
 
 
 

622. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. Gram stain is used to:

 
 
 
 

628. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

630.

631. Facultative parasite is:

 
 
 
 

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

 
 
 
 

633. Vascular tissue is found in :

 
 
 
 

634. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

636. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

641. Bacteriophages have been used as:

 
 
 
 

642. Yeast grows more rapidly in:

 
 
 
 

643. The DNA of E coli is:

 
 
 
 

644. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

646. Helotism word is used for the symbiosis between :

 
 
 
 

647. Disease resistant plant varieties can be produced by :

 
 
 
 

648. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

650. What is streptomycin?

 
 
 
 

651. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

654. The group algae possesses representatives belonging to kingdom:

 
 
 
 

655. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

657. In binomial system most of the words are:

 
 
 
 

658. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

666. 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:

 
 
 
 

667. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

669. Bacteria are placed under:

 
 
 
 

670. Pollination in Pinus is :

 
 
 
 

671. Chemosynthetic bacteria are:

 
 
 
 

672. Diphtheria is caused by:

 
 
 
 

673. Vascular cryptogams is the term used for:

 
 
 
 

674. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

676. Spermatophyta are characterized by producing:

 
 
 
 

677. Which of the following lichens is harmful?

 
 
 
 

678. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

679. Which of the following are included in Tracheophyta?

 
 
 
 

680. Fruits are not found in :

 
 
 
 

681. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

683. Nitrogen-fixing bacteria may be located:

 
 
 
 

684. Pinus is:

 
 
 
 

685. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

693. The young leaves of Cycas have :

 
 
 
 

694. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

696. 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?

 
 
 
 

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

 
 
 
 

698. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

700. Most common type of conjugation in Spirogyra is :

 
 
 
 

701. Transfusion tissue is present in the leaflet of:

 
 
 
 

702. Placenta in fern is:

 
 
 
 

703.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

709. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Acetobacter is useful in:

 
 
 
 

713. Psilotum is:

 
 
 
 

714. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

716. Funaria is a Bryophyta because :

 
 
 
 

717. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

719. Select the wrong statement:

 
 
 
 

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

 
 
 
 

721. In moss, peristomial teeth are:

 
 
 
 

722. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

725. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

726. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

728. Cap cells are found in the filament of:

 
 
 
 

729. Among the algae kelps are :

 
 
 
 

730. The phloem of vascular system of Cycas is :

 
 
 
 

731. The mycelium of Rhizopus is:

 
 
 
 

732. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

734. Green plants are classified as:

 
 
 
 

735. Saccharomyces is used in:

 
 
 
 

736. The leaves of Funaria are :

 
 
 
 

737. The lambda phase is a:

 
 
 
 

738. Longest known virus is:

 
 
 
 

739. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

741. The lichens growing on rocks are called :

 
 
 
 

742. Iodine is obtained from:

 
 
 
 

743. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

748. Which of the following is a heterosporous pteridophyte?

 
 
 
 

749. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. The sporangium of fern contains nearly:

 
 
 
 

753. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. LSD is:

 
 
 
 

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

 
 
 
 

760. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

767. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

769. Which of the following are absent in Mycoplasma?

 
 
 
 

770. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

772. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

774. The antibiotic is obtained from:

 
 
 
 

775. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

777. 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:

 
 
 
 

778. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

782. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

785. The spermatozoids of Cycas are :

 
 
 
 

786. Ovary is absent in:

 
 
 
 

787. Saccharomyces ludwigii ascus produces:

 
 
 
 

788. Centric discoid form of diatom is:

 
 
 
 

789. Heterospory is the production of:

 
 
 
 

790. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

792. Redness of red sea is due to :

 
 
 
 

793. Streptomyces falls under:

 
 
 
 

794. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. The alga, Spirogyra are found in :

 
 
 
 

799. The central part of Funaria axis is :

 
 
 
 

800. The tree fern is:

 
 
 
 

801. Smallpox is caused by:

 
 
 
 

802. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. In Herpes virus DNA is:

 
 
 
 

806. Multicellular and jacketed sex organs are found in :

 
 
 
 

807. Some biologists have used the term Mycetozoa for:

 
 
 
 

808. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

812. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

814. Lichens are the indicator of pollution :

 
 
 
 

815. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

817. Male gametophyte of Selaginella is found:

 
 
 
 

818. Lichens are pioneers of vegetation in a :

 
 
 
 

819. Bryophyta have a special character from other plants:

 
 
 
 

820. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. Endemic plants are characterised by their:

 
 
 
 

825. Funaria is :

 
 
 
 

826. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

828. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

830. In Cycas microsporangia are borne on:

 
 
 
 

831. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

834. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

836. Mycoplasma contains:

 
 
 
 

837. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

842. Mycoplasma are sensitive to:

 
 
 
 

843. Choose the correct statement about Spirogyra:

 
 
 
 

844. Synzoospore is produced in:

 
 
 
 

845. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

847. The most important property of yeast is:

 
 
 
 

848. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

849. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Bacteriophage consists of:

 
 
 
 

855. Embryophyta includes :

 
 
 
 

856. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

858. Which part of Riccia bears nurse cells?

 
 
 
 

859. In moss, conducting tissue is made up of

 
 
 
 

860. Virion refers to:

 
 
 
 

861. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

863. Genetic material of TMV is:

 
 
 
 

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