Quiz_Random

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

 
 
 
 

2. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

4. Yeast belongs to class:

 
 
 
 

5. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

7. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Cap cells are found in the filament of:

 
 
 
 

15. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

17. Pteridophyta are also called:

 
 
 
 

18. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

19. Which of the following have algal zone?

 
 
 
 

20. Polystelic condition is found in:

 
 
 
 

21. Chief constituents of bordeaux mixture are :

 
 
 
 

22. The root nodules of leguminous plants contain:

 
 
 
 

23. Quarantine regulations are concerned with:

 
 
 
 

24. Soil fertility is lost by the activities of:

 
 
 
 

25. E coli is a:

 
 
 
 

26. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

28. Acellular slime mold is/are:

 
 
 
 

29. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

34. Lichens are indicators of :

 
 
 
 

35. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

37. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

39. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

45. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

50. What is streptomycin?

 
 
 
 

51. Heterospory and ligulate leaves are a feature of:

 
 
 
 

52. Most resistant spore in bacteria is:

 
 
 
 

53. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

55. Which is a gametophytic tissue?

 
 
 
 

56. Vascular tissue is found in :

 
 
 
 

57. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

59. Mycoplasma contains:

 
 
 
 

60. Pollination drop is:

 
 
 
 

61. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

68. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

70. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Fern prothallus is:

 
 
 
 

74. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

76. Penicillin was discovered by:

 
 
 
 

77. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

79. Chemosynthetic bacteria are:

 
 
 
 

80. NBG of Lucknow is now named as:

 
 
 
 

81. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

83. Black rust of wheat is caused by:

 
 
 
 

84. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

85. The vascular bundles of Cycas stem are :

 
 
 
 

86. The male gametes of Pinus are :

 
 
 
 

87. Infective part of virus was discovered by:

 
 
 
 

88. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

90. Coenogamete is found in:

 
 
 
 

91. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

92. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

94. . Tapetum develops in:

 
 
 
 

95. Oswald Tippo’s classification is:

 
 
 
 

96. Nannandria are:

 
 
 
 

97. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

103. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

105. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Each chloroplast in Spirogyra bears :

 
 
 
 

110. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Aflatoxin is produced by:

 
 
 
 

116. The sporangia of Selaginella are attached:

 
 
 
 

117. Metulae are found in:

 
 
 
 

118. Fruits are not found in Cycas because:

 
 
 
 

119. Which have the largest antherozoid?

 
 
 
 

120. Pasteurized milk is:

 
 
 
 

121. Ovary is absent in :

 
 
 
 

122. Embryophyta includes :

 
 
 
 

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

 
 
 
 

124. The most primitive vascular plants is:

 
 
 
 

125. Lichens are pioneers of vegetation in a :

 
 
 
 

126. Vascular cryptogam is the term used for :

 
 
 
 

127. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. The gametophyte of fern bears:

 
 
 
 

133. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Agar-agar is obtained from:

 
 
 
 

140. Tautonyms are illegitimate in:

 
 
 
 

141. Most of the algae are :

 
 
 
 

142. Fairy ring is the name given to:

 
 
 
 

143. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

145. What are plasmids?

 
 
 
 

146. In Pteris, the roots are:

 
 
 
 

147. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. 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?

 
 
 
 

157. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

161. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Club moss is the common name of :

 
 
 
 

165. Detailed study of bacteriophage was made by:

 
 
 
 

166. In dinoflagellates, the two flagella are:

 
 
 
 

167. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

169.

170. Pinus is:

 
 
 
 

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

 
 
 
 

172. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

174. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. Chemosynthetic bacteria are:

 
 
 
 

182. Synzoospore is produced in:

 
 
 
 

183. Some diseases caused by bacteria are:

 
 
 
 

184. Which bacteria convert nitrate into nitrogen?

 
 
 
 

185. The tree fern is:

 
 
 
 

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

 
 
 
 

187. Siphonogamy is found in:

 
 
 
 

188. Diphtheria is caused by:

 
 
 
 

189. Pneumonia is caused by:

 
 
 
 

190. In binomial system most of the words are:

 
 
 
 

191. LSD is:

 
 
 
 

192. The gametophyte of moss has distinct phases :

 
 
 
 

193. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Which organisms are the oldest life forms?

 
 
 
 

198.

 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. Which lichen is called Reindeer moss?

 
 
 
 

203. Milk is converted to curd by:

 
 
 
 

204. The mycelium of Rhizopus is:

 
 
 
 

205. The sporophyte of Riccia is :

 
 
 
 

206. Viruses are considered to be:

 
 
 
 

207. Rhizoids of Riccia are :

 
 
 
 

208. Heterotrichous habit means :

 
 
 
 

209. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

211. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

226. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Lichens are ecologically important because :

 
 
 
 

233. The leaves of Funaria are :

 
 
 
 

234. Red rot of sugarcane is caused by :

 
 
 
 

235. Pinus microsporophyll bears:

 
 
 
 

236. The Rhizopus is:

 
 
 
 

237. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

243. Triple antigen injection or vaccine are for:

 
 
 
 

244. Which of the following have a prokaryotic cell?

 
 
 
 

245. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

247. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

249. Winged seeds are found in :

 
 
 
 

250. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

252. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. Green plants are classified as:

 
 
 
 

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

 
 
 
 

262. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

264. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

267. Protistan algae obtain their food as:

 
 
 
 

268. Mycoplasma are sensitive to:

 
 
 
 

269. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. Water bloom is generally caused by :

 
 
 
 

273. The prothallus of fern represents the plant:

 
 
 
 

274. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

276. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

278. Discovery of penicillin was based on:

 
 
 
 

279. Which is an exception to cell theory?

 
 
 
 

280. Lichens reproduce by :

 
 
 
 

281. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

286. Lichens form the first community in

 
 
 
 

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

 
 
 
 

288. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

290. Who discovered streptomycin?

 
 
 
 

291. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

293. Male gametes in Dryopteris are:

 
 
 
 

294. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

298. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

300. The photosynthetic protists are:

 
 
 
 

301. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

303. Zoogametes are not found in:

 
 
 
 

304. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

310. Antibiotics cure the disease by:

 
 
 
 

311. Yeast is a source of:

 
 
 
 

312. Isomorphic type alternation of generation is found in:

 
 
 
 

313. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

315. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

318. Cycas plant in appearance resembles :

 
 
 
 

319. 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:

 
 
 
 

320. The chloroplast in Ulothrix is :

 
 
 
 

321. Which is a tautonym?

 
 
 
 

322. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

324. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. Sporophyte of Funaria is :

 
 
 
 

328. Parmelia belongs to :

 
 
 
 

329. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

331. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. The disease symptom necrosis refers to :

 
 
 
 

336. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

338. Late blight of potato is caused by :

 
 
 
 

339. The nucleus of bacteria is:

 
 
 
 

340. Virion refers to:

 
 
 
 

341. The seedless plants which possess vascular tissues are:

 
 
 
 

342. The fungi used as food are:

 
 
 
 

343. In moss, conducting tissue is made up of

 
 
 
 

344. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

346. Citrus canker is caused by :

 
 
 
 

347. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

349. Which of the following are included in Tracheophyta?

 
 
 
 

350. Ectocarpus produces:

 
 
 
 

351. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. To which class Riccia belongs :

 
 
 
 

358. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

359. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

360. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

363. Which of the following does not contain chlorophyll?

 
 
 
 

364. Mycoplasma are:

 
 
 
 

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

 
 
 
 

366. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

368. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

370. Fertility of the soil is increased by:

 
 
 
 

371. Simple polyembryony is found in :

 
 
 
 

372. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

374. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

376. The coralloid roots are :

 
 
 
 

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

 
 
 
 

378. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

381. Which is a redwood tree?

 
 
 
 

382. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

384. The lambda phase is a:

 
 
 
 

385. In moss, stomata are found:

 
 
 
 

386. In Selaginella, the microsporangia are:

 
 
 
 

387. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

389. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

396. Most of the lichens are composed of :

 
 
 
 

397. Disease resistant plant varieties can be produced by :

 
 
 
 

398. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

400. Climbers are found in genus:

 
 
 
 

401. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. In Gymnosperms endosperm is a:

 
 
 
 

405. Funaria is :

 
 
 
 

406. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

410.

411. Bentham and Hooker placed gymnosperms:

 
 
 
 

412. The sporangium of fern contains nearly:

 
 
 
 

413. The order generally ends with:

 
 
 
 

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

 
 
 
 

415. The group algae possesses representatives belonging to kingdom:

 
 
 
 

416. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

418. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. The prothallus of fern is:

 
 
 
 

423. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

425. The term stele was given by:

 
 
 
 

426. Black rust of wheat is caused by:

 
 
 
 

427. Saccharomyces is well known for:

 
 
 
 

428. Cocci types of bacteria are:

 
 
 
 

429. Select the correct statement: (NEET 2016)

 
 
 
 

430. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

432. Vascular cryptogams is the term used for:

 
 
 
 

433. Longest known virus is:

 
 
 
 

434. Funaria can be differentiated from Cycas :

 
 
 
 

435. Water-net is the name of:

 
 
 
 

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

 
 
 
 

437. John Hutchinson divided dicots into two divisions:

 
 
 
 

438. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. All archaebacteria lack:

 
 
 
 

442. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

443. The young leaves of Cycas have :

 
 
 
 

444. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

448. Black rust of wheat is caused by:

 
 
 
 

449. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

451. Lichens show :

 
 
 
 

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

 
 
 
 

453. Rhizopus belongs to:

 
 
 
 

454. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

456. 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:

 
 
 
 

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

 
 
 
 

458. The smallest bacterium is:

 
 
 
 

459. Winged pollen grains are found in :

 
 
 
 

460. Bacteria which are spherical are called:

 
 
 
 

461. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

463. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

465. The similarity between cyanobacteria and bacteria:

 
 
 
 

466. Embryophyta includes:

 
 
 
 

467. Plasmids are:

 
 
 
 

468. Which statement is wrong in regard to bacteria?

 
 
 
 

469. Fruits are not found in:

 
 
 
 

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

 
 
 
 

471. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

472. The source of litmus is :

 
 
 
 

473. Maximum diversity of life forms occurs in :

 
 
 
 

474. Who discovered cyanophages?

 
 
 
 

475. In Funaria :

 
 
 
 

476. Some bacteria cannot be killed easily because of:

 
 
 
 

477. Seeds are characteristically found in :

 
 
 
 

478. Which of the following is sago palm?

 
 
 
 

479. The tallest moss in the world is :

 
 
 
 

480. Rice, pea, potato are :

 
 
 
 

481. Viruses have:

 
 
 
 

482. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Late blight of potato is caused by:

 
 
 
 

486. Bacteria growing on synthetic medium are called:

 
 
 
 

487. The development of Selaginella embryo is:

 
 
 
 

488. Pollination in Pinus is :

 
 
 
 

489. What is a vector?

 
 
 
 

490. Which part of Riccia bears nurse cells?

 
 
 
 

491. Mixed cropping helps :

 
 
 
 

492. Kuru, a human disease is caused by:

 
 
 
 

493. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

495. Which is not found in bacteria?

 
 
 
 

496. Economic importance of bacteria lies in their being:

 
 
 
 

497. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Ergot of rye is caused by:

 
 
 
 

501. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

517. Small epidermal swellings due to infection are called :

 
 
 
 

518. What is absent in Deuteromycetes?

 
 
 
 

519. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

526. 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?

 
 
 
 

527. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

529. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

531. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

533. In tracheophyta:

 
 
 
 

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

 
 
 
 

535. Azolla growing in paddy fields helps in:

 
 
 
 

536. 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?

 
 
 
 

537. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. In Cycas microsporangia are borne on:

 
 
 
 

541. Spermatophyta are characterized by producing:

 
 
 
 

542. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

544. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

546. Spirogyra represents the :

 
 
 
 

547. Select the wrong statement:

 
 
 
 

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

 
 
 
 

549. Mycoplasma was discovered by:

 
 
 
 

550. Bivalved siliceous shell or frustule occur in:

 
 
 
 

551. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

552. Sleeping sickness disease in man is caused by:

 
 
 
 

553. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

555. Select the wrong statement:

 
 
 
 

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

 
 
 
 

557. Which of the following is true for viruses?

 
 
 
 

558. Funaria is :

 
 
 
 

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

 
 
 
 

560. Which of the following are absent in Mycoplasma?

 
 
 
 

561. Which of the following is true for Selaginella?

 
 
 
 

562. Spirogyra differs from moss protonema in having :

 
 
 
 

563. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

565. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. The gametophyte produced by apospory is :

 
 
 
 

569. Circular DNA is seen in:

 
 
 
 

570. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

572. Male gametophyte of Selaginella is found:

 
 
 
 

573. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

575. Citrus canker is caused by:

 
 
 
 

576. Centric discoid form of diatom is:

 
 
 
 

577. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

579. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. The leaves of Funaria are :

 
 
 
 

583. Photosynthetic bacteria have:

 
 
 
 

584. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

586. Who among the following discovered virus?

 
 
 
 

587. The rhizoids of Funaria are :

 
 
 
 

588. The sporophyte of Riccia is represented by :

 
 
 
 

589. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

591. What is special feature of fern archegonia?

 
 
 
 

592. Which causes red tide?

 
 
 
 

593. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

595. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. The gametophyte of fern is as:

 
 
 
 

599. TMV was isolated in crystalline form by:

 
 
 
 

600. Cycas is:

 
 
 
 

601. Clostridium can:

 
 
 
 

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

 
 
 
 

603. Diploxylic vascular bundles are found in:

 
 
 
 

604. Typhoid in man is caused by:

 
 
 
 

605. Which is a fungicide?

 
 
 
 

606. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

608. The ascus of yeast contains:

 
 
 
 

609. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

611. Which of the following is a monocot?

 
 
 
 

612. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Amoeba is a member of the phylum:

 
 
 
 

617. Reserve food in Euglena is:

 
 
 
 

618. The fern plant is:

 
 
 
 

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

 
 
 
 

620. Nitrogen-fixing bacteria may be located:

 
 
 
 

621. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. Mycoplasmas are not viruses in nature because:

 
 
 
 

627. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

629. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. The antibiotic is obtained from:

 
 
 
 

633. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. Botulinum toxin effects:

 
 
 
 

638. An alga which is rich in proteins:

 
 
 
 

639. In Cycas:

 
 
 
 

640.

641. Cleavage polyembryony is found in :

 
 
 
 

642. The chief characteristic of bryophyta is that :

 
 
 
 

643. Pteridophytes are also known as :

 
 
 
 

644. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

645. The leaf of Cycas shows:

 
 
 
 

646. Penicillin is obtained from:

 
 
 
 

647. Genetic material of TMV is:

 
 
 
 

648. Bacteriophages have been used as:

 
 
 
 

649. One of the distinctive feature of Spirogyra is :

 
 
 
 

650. 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:

 
 
 
 

651. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

653. 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:

 
 
 
 

654. Cycas is :

 
 
 
 

655. Enteric bacteria are those bacteria that live:

 
 
 
 

656. Ovary is absent in:

 
 
 
 

657. All protozoans possess:

 
 
 
 

658. Cryptogams include :

 
 
 
 

659. In Cycas which structure is equivalent to stamen?

 
 
 
 

660. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. The Rhizopus gametes are formed in:

 
 
 
 

668. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. Mucilaginous canals in Cycas are found in :

 
 
 
 

672. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

674. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

676. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

678. Cyanophage is a virus that attacks:

 
 
 
 

679. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

681. Ulothrix produces :

 
 
 
 

682. Majority of lichens are :

 
 
 
 

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

 
 
 
 

684. Downy mildew disease is caused by :

 
 
 
 

685. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

687. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

693. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. Placenta in fern is:

 
 
 
 

697. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

701. Methanogens belong to:

 
 
 
 

702. Endemic plants are characterised by their:

 
 
 
 

703. Halophiles are the bacteria that require for growth:

 
 
 
 

704. Wine turns sour because of:

 
 
 
 

705. Botulism is a:

 
 
 
 

706. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

708. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Rhizophore of Selaginella is:

 
 
 
 

713. Lichen show :

 
 
 
 

714. Streptomycin is obtained from:

 
 
 
 

715. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

717. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

719. Helotism word is used for the symbiosis between :

 
 
 
 

720. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

723. What are Cyanobacteria?

 
 
 
 

724. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

726. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

728. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

730. Asexual reproductive body of Volvox is called:

 
 
 
 

731. Spermatophyta are characterized by producing:

 
 
 
 

732. Psilotum is:

 
 
 
 

733. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

735. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

737. Redness of red sea is due to :

 
 
 
 

738. Seeds are characteristically found in:

 
 
 
 

739. Streptomyces falls under:

 
 
 
 

740. Which of the following lichens is harmful?

 
 
 
 

741. The two conjugating gametangia of Rhizopus are:

 
 
 
 

742. The mode of nutrition of bacteria is usually:

 
 
 
 

743. All algae have:

 
 
 
 

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

 
 
 
 

745. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

751. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

753. In Funaria, calyptra is derived from :

 
 
 
 

754. Desired type of Cycas can be grown by:

 
 
 
 

755. Who discovered heterothallism in fungi?

 
 
 
 

756. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. The archegonia of Selaginella are differentiated by:

 
 
 
 

760. Indusium in Dryopteris is:

 
 
 
 

761. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

763. Among the algae kelps are :

 
 
 
 

764. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

769. Sexual reproduction in Rhizopus is by:

 
 
 
 

770. 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:

 
 
 
 

771. Banana bunchy top is caused by :

 
 
 
 

772. Roots are absent in :

 
 
 
 

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

 
 
 
 

774. The DNA of E coli is:

 
 
 
 

775. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

777. Who named prion?

 
 
 
 

778. Fern plants are:

 
 
 
 

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

 
 
 
 

780. Which is absent from the xylem of Cycas?

 
 
 
 

781. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

782. The largest alga is:

 
 
 
 

783. Which condition is found in Cycas?

 
 
 
 

784. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Facultative parasite is:

 
 
 
 

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

 
 
 
 

789. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

798. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

800. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

803. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

808. Aflatoxin is produced as a product in :

 
 
 
 

809. Pseudomycelium is found in:

 
 
 
 

810. Standard size of a herbarium sheet is:

 
 
 
 

811. Red rot of sugarcane is caused by :

 
 
 
 

812. A gill of Agaricus:

 
 
 
 

813. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

815. Cellular slime mold is:

 
 
 
 

816. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

818. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

820. Fruits are not found in :

 
 
 
 

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

 
 
 
 

822. Which of the following shows heterotrichous habit?

 
 
 
 

823. An Hfr bacterium is one that contains:

 
 
 
 

824. Most primitive kind of flower is represented by:

 
 
 
 

825. In a diplontic life cycle:

 
 
 
 

826. Nitrifying bacteria play an important role by converting:

 
 
 
 

827. Pollination in Cycas takes place by :

 
 
 
 

828. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

830. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

832. Ovules are not found enclosed in ovary in :

 
 
 
 

833. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

835. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Green plants are classified as :

 
 
 
 

841. Cycas revoluta is widely grown as :

 
 
 
 

842. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. The truncated cone of HIV consists of:

 
 
 
 

846. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

848. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

850. Pasteur is famous for his:

 
 
 
 

851. The chromosomal number in:

 
 
 
 

852. Gram stain is used to:

 
 
 
 

853. Interferon is a:

 
 
 
 

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

 
 
 
 

855. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

857. Which of the following are included in Tracheophyta?

 
 
 
 

858. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Germ theory of disease was proposed by:

 
 
 
 

863. Reproduction in Rhizopus is:

 
 
 
 

864. Meristele of fern is: