Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

9. Small epidermal swellings due to infection are called :

 
 
 
 

10. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

12. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

14. The chloroplast of Chlamydomonas are:

 
 
 
 

15. Virus and bacteriophage are made-up of:

 
 
 
 

16. Heterocysts are found in :

 
 
 
 

17. Some bacteria cannot be killed easily because of:

 
 
 
 

18. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

20. Usually, bacteria reproduce by:

 
 
 
 

21. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

23. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

25. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

27. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

29. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

34. Which of the following have a prokaryotic cell?

 
 
 
 

35. Who discovered heterothallism in fungi?

 
 
 
 

36. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

38. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

40.

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

 
 
 
 

42. Placenta in fern is:

 
 
 
 

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

 
 
 
 

44. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

46. Circular DNA is seen in:

 
 
 
 

47. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

52. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

59. In Gymnosperms endosperm is a:

 
 
 
 

60. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. 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?

 
 
 
 

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

 
 
 
 

65. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

67. Which fixes atmospheric nitrogen?

 
 
 
 

68. Cycas is different from mango in :

 
 
 
 

69. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

74. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

79. Pollination in Cycas takes place by :

 
 
 
 

80. The stele of Dryopteris is a:

 
 
 
 

81. Funaria is :

 
 
 
 

82. The fungi are mostly:

 
 
 
 

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

 
 
 
 

84. Which of the following is true for viruses?

 
 
 
 

85. Which class of Protozoa includes all parasitic forms?

 
 
 
 

86. Acetobacter is useful in:

 
 
 
 

87. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Who discovered streptomycin?

 
 
 
 

91. Spermatophyta are characterized by producing:

 
 
 
 

92. Cap cells are found in the filament of:

 
 
 
 

93. Citrus canker is caused by:

 
 
 
 

94. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

96. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

102. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Rice, pea, potato are :

 
 
 
 

108. Discovery of penicillin was based on:

 
 
 
 

109. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

111. Mycoplasma is different from bacteria due to:

 
 
 
 

112. The ferns are usually found:

 
 
 
 

113. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

115. First animal pathogenic virus was discovered by:

 
 
 
 

116. Which is the correct statement about Selaginella?

 
 
 
 

117. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. The fungi used as food are:

 
 
 
 

128.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. Ulothrix produces :

 
 
 
 

133. Pasteur is famous for his:

 
 
 
 

134. Which organisms are the oldest life forms?

 
 
 
 

135. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

147. Isomorphic type alternation of generation is found in:

 
 
 
 

148. Most primitive group of vascular plants are:

 
 
 
 

149. Which of the following is a monocot?

 
 
 
 

150. Why is Cycas called a living fossil?

 
 
 
 

151. Most of the algae are :

 
 
 
 

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

 
 
 
 

153. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

157. Woody climbers are known as :

 
 
 
 

158. Mycoplasma are:

 
 
 
 

159. Multicellular and jacketed sex organs are found in :

 
 
 
 

160. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

162. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Majority of lichens are :

 
 
 
 

166. Embryophyta includes:

 
 
 
 

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

 
 
 
 

168. Economic importance of bacteria lies in their being:

 
 
 
 

169. Cellular slime mold is:

 
 
 
 

170. Cycas plant in appearance resembles :

 
 
 
 

171. Pinus microsporophyll bears:

 
 
 
 

172. Acellular slime mold is/are:

 
 
 
 

173. Leprosy is caused by:

 
 
 
 

174. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

176. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Club moss and Peat moss belong to:

 
 
 
 

181. Oswald Tippo’s classification is:

 
 
 
 

182. The truncated cone of HIV consists of:

 
 
 
 

183. What are plasmids?

 
 
 
 

184. Streptomycin is obtained from:

 
 
 
 

185. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

187. Nannandria are:

 
 
 
 

188. Disease resistant plant varieties can be produced by :

 
 
 
 

189. Germ theory of disease was proposed by:

 
 
 
 

190. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

192. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

193. Linnaeus is credited with introducing:

 
 
 
 

194. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

196. Simple polyembryony is found in :

 
 
 
 

197. Soil fertility is lost by the activities of:

 
 
 
 

198. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

203. Spermatophyta are characterized by producing:

 
 
 
 

204. Which causes red tide?

 
 
 
 

205. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

207. All protozoans possess:

 
 
 
 

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

 
 
 
 

209. Smallpox is caused by:

 
 
 
 

210. In a bacteriophage, DNA is present in:

 
 
 
 

211. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. In Funaria, calyptra is derived from :

 
 
 
 

216. Botulinum toxin effects:

 
 
 
 

217. Ethylene oxide is widely used to:

 
 
 
 

218. Pollination in Pinus is :

 
 
 
 

219. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

227. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

229. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

231. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

233. What is a vector?

 
 
 
 

234. Funaria is a Bryophyta because :

 
 
 
 

235. Agar-agar is obtained from:

 
 
 
 

236. The lambda phase is a:

 
 
 
 

237. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. The leaf of Cycas shows:

 
 
 
 

243. The roots of Cycas are :

 
 
 
 

244. Ovary is absent in :

 
 
 
 

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

 
 
 
 

246. Which of the following have algal zone?

 
 
 
 

247. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

249. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. The order generally ends with:

 
 
 
 

262. Which of the following is true for Selaginella?

 
 
 
 

263. Detailed study of bacteriophage was made by:

 
 
 
 

264. The Rhizopus is:

 
 
 
 

265. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

267. The zygospore in Rhizopus on germination forms:

 
 
 
 

268. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

270. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

272. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

276. Penicillin is obtained from:

 
 
 
 

277. The gametophyte produced by apospory is :

 
 
 
 

278. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. 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?

 
 
 
 

283. All archaebacteria lack:

 
 
 
 

284. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. Club moss is the common name of :

 
 
 
 

290. Virion refers to:

 
 
 
 

291. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

293. Which of the following does not contain chlorophyll?

 
 
 
 

294. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. Meiosis in Ulothrix takes place:

 
 
 
 

298. Who among the following discovered virus?

 
 
 
 

299. The orders generally have the uniform endings:

 
 
 
 

300. The sporangium of fern contains nearly:

 
 
 
 

301. The two conjugating gametangia of Rhizopus are:

 
 
 
 

302. Zoogametes are not found in:

 
 
 
 

303. In a diplontic life cycle:

 
 
 
 

304. The antibiotic is obtained from:

 
 
 
 

305. Gymnosperms could also be called as:

 
 
 
 

306. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

308. Yeast grows more rapidly in:

 
 
 
 

309. Black rust of wheat is caused by:

 
 
 
 

310. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. Bacteria are found everywhere, except:

 
 
 
 

314. The young leaves of Cycas have :

 
 
 
 

315. The antherozoids of Funaria are :

 
 
 
 

316. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Cycas is similar to a mustard plant :

 
 
 
 

320. The chief characteristic of bryophyta is that :

 
 
 
 

321. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

323. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

325. The gametophyte of moss has distinct phases :

 
 
 
 

326. The phloem of vascular system of Cycas is :

 
 
 
 

327. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. The sporophyte of Riccia is :

 
 
 
 

331. 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?

 
 
 
 

332. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

334. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

336. Anoxygenic photosynthesis occurs in:

 
 
 
 

337. The disease apple scab is caused by:

 
 
 
 

338. Which is not true for Escherichia coli?

 
 
 
 

339. LSD is:

 
 
 
 

340. Milk is converted to curd by:

 
 
 
 

341. Triple antigen injection or vaccine are for:

 
 
 
 

342. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

344. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. The sporangiophores in Rhizopus are:

 
 
 
 

348. The sporophyte of Riccia is represented by :

 
 
 
 

349. Late blight of potato is caused by :

 
 
 
 

350. The middle sterile part of capsule is called:

 
 
 
 

351. Methanogens belong to:

 
 
 
 

352. Fruiting body of lichens is :

 
 
 
 

353. The tallest moss in the world is :

 
 
 
 

354. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

356. 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:

 
 
 
 

357. Which is a gametophytic tissue?

 
 
 
 

358. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

360. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

362. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

363. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. Where does meiosis occur in yeast?

 
 
 
 

367. Seeds are characteristically found in:

 
 
 
 

368. The chromosomal number in:

 
 
 
 

369. Facultative saprophyte is:

 
 
 
 

370. In Selaginella, the microsporangia are:

 
 
 
 

371. Mycoplasma contains:

 
 
 
 

372. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

374. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. John Hutchinson divided dicots into two divisions:

 
 
 
 

379. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

381. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. Cell walls of Gram-positive bacteria contain:

 
 
 
 

386. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

388. Most primitive embryophytes are placed in:

 
 
 
 

389. Fruits are not found in :

 
 
 
 

390. Male gametophyte of Selaginella is found:

 
 
 
 

391. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Red rot of sugarcane is caused by :

 
 
 
 

395. Generic name of mango is:

 
 
 
 

396. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

398. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

403. Green plants are classified as:

 
 
 
 

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

 
 
 
 

405. The largest alga is:

 
 
 
 

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

 
 
 
 

407. Cryptogams include :

 
 
 
 

408. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

410. The fern plant is:

 
 
 
 

411. What is mycorrhiza?

 
 
 
 

412. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

414. Water-net is the name of:

 
 
 
 

415. Male gametes in Dryopteris are:

 
 
 
 

416. Cyanophage is a virus that attacks:

 
 
 
 

417. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

419. Photoautotrophic bacteria have:

 
 
 
 

420. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. Spirogyra represents the :

 
 
 
 

424. Infective part of virus was discovered by:

 
 
 
 

425. Bacteria were first discovered by:

 
 
 
 

426. An alga which is rich in proteins:

 
 
 
 

427. The prothallus of fern is:

 
 
 
 

428. Siphonogamy is found in:

 
 
 
 

429. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

431. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. Which is absent from the xylem of Cycas?

 
 
 
 

437. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

439. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

442. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

445. Antibiotics cure the disease by:

 
 
 
 

446. The gametophyte of fern bears:

 
 
 
 

447. 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:

 
 
 
 

448. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

453. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

455. In moss, stomata are found:

 
 
 
 

456. Synzoospore is produced in:

 
 
 
 

457. Saccharomyces is well known for:

 
 
 
 

458. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

460. Bacteriophage consists of:

 
 
 
 

461. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. How is moss different from fern?

 
 
 
 

470. Bacteriophages have been used as:

 
 
 
 

471. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

473. Lichens reproduce by :

 
 
 
 

474. Metulae are found in:

 
 
 
 

475. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

477. Green plants are classified as :

 
 
 
 

478. Liverworts are included in :

 
 
 
 

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

 
 
 
 

480. Which is a fungicide?

 
 
 
 

481. The smallest unit of classification is:

 
 
 
 

482. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

484. Ovules are not found enclosed in ovary of:

 
 
 
 

485. Funaria is :

 
 
 
 

486. The spermatozoids of Cycas are :

 
 
 
 

487. 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:

 
 
 
 

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

 
 
 
 

489. Who named prion?

 
 
 
 

490. The chloroplast in Ulothrix is :

 
 
 
 

491. The teeth of peristome of Funaria are :

 
 
 
 

492. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

501. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Protozoans are considered animals because these are:

 
 
 
 

507. 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:

 
 
 
 

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

 
 
 
 

509. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

512. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. Wine turns sour because of:

 
 
 
 

520. The similarity between cyanobacteria and bacteria:

 
 
 
 

521. Ergot of rye is caused by:

 
 
 
 

522. The sori in Dryopteris are found on:

 
 
 
 

523. Fruits are not found in Cycas because:

 
 
 
 

524. Polystelic condition is found in:

 
 
 
 

525. Which statement is wrong in regard to bacteria?

 
 
 
 

526. Ergot is obtained from :

 
 
 
 

527. Cleavage polyembryony is found in :

 
 
 
 

528. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

533. The seedless plants which possess vascular tissues are:

 
 
 
 

534. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

536. Which bacteria convert nitrate into nitrogen?

 
 
 
 

537. In Funaria :

 
 
 
 

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

 
 
 
 

539. Which is an edible fungus?

 
 
 
 

540. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

548. The flagella of Chlamydomonas are:

 
 
 
 

549. The leaves of Funaria are :

 
 
 
 

550. The development of Selaginella embryo is:

 
 
 
 

551. The rhizoids of Funaria are :

 
 
 
 

552. Funaria are commonly found :

 
 
 
 

553. In moss, conducting tissue is made up of

 
 
 
 

554. Indusium in Dryopteris is:

 
 
 
 

555. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

557. Yeast is a source of:

 
 
 
 

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

 
 
 
 

559. In Gymnocarpeae the fruiting body is :

 
 
 
 

560. Iodine is obtained from:

 
 
 
 

561. The first to isolate a plant virus was:

 
 
 
 

562. Which of the following are absent in Mycoplasma?

 
 
 
 

563. Facultative parasite is:

 
 
 
 

564. What is streptomycin?

 
 
 
 

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

 
 
 
 

566. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

568. Genetic material of TMV is:

 
 
 
 

569. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

570. Viruses are considered to be:

 
 
 
 

571. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

573. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

578. Funaria can be differentiated from Cycas :

 
 
 
 

579. 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:

 
 
 
 

580. Sleeping sickness disease in man is caused by:

 
 
 
 

581. An Hfr bacterium is one that contains:

 
 
 
 

582. Sexual reproduction of lichen is due to :

 
 
 
 

583. The megasporangium of Selaginella is:

 
 
 
 

584. All algae have:

 
 
 
 

585. The genetic material of poxvirus is:

 
 
 
 

586. E coli is a:

 
 
 
 

587. Little leaf disease of Brinjal is caused by:

 
 
 
 

588. The ascus of yeast contains:

 
 
 
 

589. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

590. Plasmids are:

 
 
 
 

591. The most primitive vascular plants is:

 
 
 
 

592. Cycas is :

 
 
 
 

593. The male gametes of Pinus are :

 
 
 
 

594. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

601. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

603. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

605. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

610. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

612. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

614. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

616. Fern plants are:

 
 
 
 

617. In Cycas:

 
 
 
 

618. Longest known virus is:

 
 
 
 

619. Penicillin was discovered by:

 
 
 
 

620. Reserve food in Euglena is:

 
 
 
 

621. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

624. Clostridium can:

 
 
 
 

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

 
 
 
 

626. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

628. Select the correct statement: (NEET 2016)

 
 
 
 

629. Pythium debaryanum is the causative agent of:

 
 
 
 

630. Heterotrichous habit means :

 
 
 
 

631. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

633. Which one of the following statement is wrong?

 
 
 
 

634. In Cycas which structure is equivalent to stamen?

 
 
 
 

635. Rhizoids of Riccia are :

 
 
 
 

636. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

639. Some diseases caused by bacteria are:

 
 
 
 

640. Pasteurized milk is:

 
 
 
 

641. Chief constituents of bordeaux mixture are :

 
 
 
 

642. Fern phloem lacks:

 
 
 
 

643. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

645. Roots are absent in :

 
 
 
 

646. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

648. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

650. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

651. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

659. NBG of Lucknow is now named as:

 
 
 
 

660. Selaginella differs from Moss in having:

 
 
 
 

661. The archegonia in Selaginella develop on:

 
 
 
 

662. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

667. . Tapetum develops in:

 
 
 
 

668. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

670. Total parasites belong to:

 
 
 
 

671. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

675. Lichens are ecologically important because :

 
 
 
 

676. Nitrifying bacteria play an important role by converting:

 
 
 
 

677. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

683. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

685. Mixed cropping helps :

 
 
 
 

686. Who discovered cyanophages?

 
 
 
 

687. The sexual reproductive organs in Rhizopus are:

 
 
 
 

688. Antibiotic has been extracted from :

 
 
 
 

689. Typhoid in man is caused by:

 
 
 
 

690. 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:

 
 
 
 

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

 
 
 
 

692. Which of the following statement is correct?

 
 
 
 

693. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. Embryophyta includes :

 
 
 
 

698. Each chloroplast in Spirogyra bears :

 
 
 
 

699. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703.

704. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. The term stele was given by:

 
 
 
 

708. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Most primitive kind of flower is represented by:

 
 
 
 

712. Pinus is:

 
 
 
 

713. Which of the following are included in Tracheophyta?

 
 
 
 

714. In Cycas microsporangia are borne on:

 
 
 
 

715. Which have the largest antherozoid?

 
 
 
 

716. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

718. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

720. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

722. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

724. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

726. Reproduction in Rhizopus is:

 
 
 
 

727. The largest known bacterium is:

 
 
 
 

728. Halophiles are the bacteria that require for growth:

 
 
 
 

729. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

731. Which one of the following is a monocot?

 
 
 
 

732. Bacteria are placed under:

 
 
 
 

733. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

735. Embryo formation is not known in :

 
 
 
 

736. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

738. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

740. Transfusion tissue is present in the leaflet of:

 
 
 
 

741. Bacteria differ from viruses in being sensitive to:

 
 
 
 

742.

 

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

 
 
 
 

744. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

753. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

763. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

765. The leaves of Funaria are :

 
 
 
 

766. The source of litmus is :

 
 
 
 

767. Which lichen is called Reindeer moss?

 
 
 
 

768. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

770. Quarantine regulations are concerned with:

 
 
 
 

771. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

776. In moss, reduction division occurs in :

 
 
 
 

777. The smallest bacterium is:

 
 
 
 

778. 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:

 
 
 
 

779. Most primitive embryophytes are placed in :

 
 
 
 

780. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

782. True sexuality is not found in:

 
 
 
 

783. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Heterospory and ligulate leaves are a feature of:

 
 
 
 

790. TMV was isolated in crystalline form by:

 
 
 
 

791. Aflatoxin is produced by:

 
 
 
 

792. In moss, peristomial teeth are:

 
 
 
 

793. Bryophyta have been placed in cryptogams because:

 
 
 
 

794. 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?

 
 
 
 

795. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

797. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

799. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. The fungi are usually:

 
 
 
 

805. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

806. Gametophyte is the main plant body in :

 
 
 
 

807. In Herpes virus DNA is:

 
 
 
 

808. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

809. The chief characteristic of class Ascomycetes is:

 
 
 
 

810. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

811. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

813. In moss, sporogenous tissue arises from:

 
 
 
 

814. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

816. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. The leafy fern plant represents the:

 
 
 
 

821. Cyathia is characterized by:

 
 
 
 

822. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

823. Gram stain is used to:

 
 
 
 

824. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

826. Saccharomyces is used in:

 
 
 
 

827. Pasteurization of milk involves heating for:

 
 
 
 

828. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

830. Which is a tautonym?

 
 
 
 

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

 
 
 
 

832. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

834. Lichens are the indicator of pollution :

 
 
 
 

835. Pseudomycelium is found in:

 
 
 
 

836. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

838. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

839. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

840. The role of meiosis is for:

 
 
 
 

841. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

842. Photosynthetic bacteria have:

 
 
 
 

843. Viruses have:

 
 
 
 

844. Winged seeds are found in :

 
 
 
 

845. Bacteria growing on synthetic medium are called:

 
 
 
 

846. The mode of nutrition of bacteria is usually:

 
 
 
 

847. Which group of algae have an incipient nucleus?

 
 
 
 

848. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

850. How a fern differs from a moss?

 
 
 
 

851. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

852. Germination of the seed of Pinus is :

 
 
 
 

853. Pneumonia is caused by:

 
 
 
 

854. Meristele of fern is:

 
 
 
 

855. To which class Riccia belongs :

 
 
 
 

856. Mycoplasma are sensitive to:

 
 
 
 

857. Which is an exception to cell theory?

 
 
 
 

858. The megaspore of Selaginella on germination produces:

 
 
 
 

859. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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