Quiz_Random

1. Liverworts are included in :

 
 
 
 

2. Woody climbers are known as :

 
 
 
 

3. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

5. Fern plants are:

 
 
 
 

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

 
 
 
 

7. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

9. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Bacteria are placed under:

 
 
 
 

13. Vascular tissue is found in :

 
 
 
 

14. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

16. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

18. Protistan algae obtain their food as:

 
 
 
 

19. All protozoans possess:

 
 
 
 

20. Etiology includes the study of :

 
 
 
 

21. The sori in Dryopteris are found on:

 
 
 
 

22. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

24. Fruiting body of lichens is :

 
 
 
 

25. Ulothrix produces :

 
 
 
 

26. Funaria can be differentiated from Cycas :

 
 
 
 

27. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Lichens show :

 
 
 
 

33. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

35. Where does meiosis occur in yeast?

 
 
 
 

36. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

37. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

39. Majority of lichens are :

 
 
 
 

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

 
 
 
 

41. True sexuality is not found in:

 
 
 
 

42. The lichens growing on rocks are called :

 
 
 
 

43. Pneumonia is caused by:

 
 
 
 

44. In a bacteriophage, DNA is present in:

 
 
 
 

45. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

47. Pteridophyta are also called:

 
 
 
 

48. Bacteria are considered to be plants because they:

 
 
 
 

49. Multicellular and jacketed sex organs are found in :

 
 
 
 

50. The phloem of vascular system of Cycas is :

 
 
 
 

51. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

53. Number of capsomeres forming capsid of TMV is:

 
 
 
 

54. Which is a gametophytic tissue?

 
 
 
 

55. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

56. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Aflatoxin is produced as a product in :

 
 
 
 

60. The zygospore in Rhizopus on germination forms:

 
 
 
 

61. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. In a diplontic life cycle:

 
 
 
 

65. Streptomyces falls under:

 
 
 
 

66. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Mycoplasma are:

 
 
 
 

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

 
 
 
 

74. Water-net is the name of:

 
 
 
 

75. Which of the following is a heterosporous pteridophyte?

 
 
 
 

76. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

78. Black rust of wheat is caused by:

 
 
 
 

79. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

87. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. The upper region of moss capsule is :

 
 
 
 

92. Which of the following statement is correct?

 
 
 
 

93. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

95. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

97. Which is a redwood tree?

 
 
 
 

98. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

100. The sporangium of fern contains nearly:

 
 
 
 

101. Bacteria differ from viruses in being sensitive to:

 
 
 
 

102. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

104. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

106. Which is absent from the xylem of Cycas?

 
 
 
 

107. Cycas is :

 
 
 
 

108. In Selaginella, the microsporangia are:

 
 
 
 

109. Economic importance of bacteria lies in their being:

 
 
 
 

110. The gametophyte of fern bears:

 
 
 
 

111. Club moss and Peat moss belong to:

 
 
 
 

112. Synzoospore is produced in:

 
 
 
 

113. The ferns are usually found:

 
 
 
 

114. Pasteurization of milk involves heating for:

 
 
 
 

115. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

117. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

119. Spirogyra represents the :

 
 
 
 

120. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

122. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

124. The similarity between cyanobacteria and bacteria:

 
 
 
 

125. Which of the following is a parasitic algae?

 
 
 
 

126. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

128. Sexual reproduction of lichen is due to :

 
 
 
 

129. Who discovered cyanophages?

 
 
 
 

130. The group algae possesses representatives belonging to kingdom:

 
 
 
 

131. Sometimes the bacterial cell is enclosed in:

 
 
 
 

132. Each chloroplast in Spirogyra bears :

 
 
 
 

133. The sporophyte of Riccia is represented by :

 
 
 
 

134. The leafy fern plant represents the:

 
 
 
 

135. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

137. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

141. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

143. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. To which country Antony van Leeuwenhoek belong?

 
 
 
 

147. Rhizophore of Selaginella is:

 
 
 
 

148. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

156. Which bacteria convert nitrate into nitrogen?

 
 
 
 

157. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

159. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

161. Black rust of wheat is caused by:

 
 
 
 

162. Which part of Riccia bears nurse cells?

 
 
 
 

163. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

166. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

168. The central part of Funaria axis is :

 
 
 
 

169. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

171. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177.

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

 
 
 
 

179. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

181. Ergot of rye is caused by:

 
 
 
 

182. In moss, calyptra is formed from:

 
 
 
 

183. Club moss is the common name of :

 
 
 
 

184. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

186. Green plants are classified as :

 
 
 
 

187. The tree fern is:

 
 
 
 

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

 
 
 
 

189. 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:

 
 
 
 

190. Pteridophytes are also known as :

 
 
 
 

191. Most of the lichens are composed of :

 
 
 
 

192. Lichens are pioneers of vegetation in a :

 
 
 
 

193. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Which of the following are included in Tracheophyta?

 
 
 
 

198. The mycelium of Rhizopus is:

 
 
 
 

199. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

201. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

202. 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:

 
 
 
 

203. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

205. Pinus gerardiana is :

 
 
 
 

206. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

208. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

210. Endemic plants are characterised by their:

 
 
 
 

211. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Circular DNA is seen in:

 
 
 
 

216. In Cycas the fertilization is:

 
 
 
 

217. Select the wrong statement:

 
 
 
 

218. What are plasmids?

 
 
 
 

219. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

221. Antibiotic has been extracted from :

 
 
 
 

222. Most primitive embryophytes are placed in :

 
 
 
 

223. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

225. In moss, conducting tissue is made up of

 
 
 
 

226. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230.

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

 
 
 
 

232. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Spores of which plants have chloroplast:

 
 
 
 

236. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

238. Streptomycin is obtained from:

 
 
 
 

239. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

247. Rice, pea, potato are :

 
 
 
 

248. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. In moss, stomata are found:

 
 
 
 

257. Which of the following have algal zone?

 
 
 
 

258. Heterotrichous habit means :

 
 
 
 

259. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. In angiosperms double fertilization represents:

 
 
 
 

271. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. Psilotum is:

 
 
 
 

279. Funaria are commonly found :

 
 
 
 

280. Most of the algae are :

 
 
 
 

281. Bentham and Hooker placed gymnosperms:

 
 
 
 

282. The megasporangium of Selaginella is:

 
 
 
 

283. Cleavage polyembryony is found in :

 
 
 
 

284. The DNA of E coli is:

 
 
 
 

285. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

291. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

293. Mycoplasma are sensitive to:

 
 
 
 

294. The largest known bacterium is:

 
 
 
 

295. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. What is absent in Deuteromycetes?

 
 
 
 

300. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

302. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

303. Pythium debaryanum is the causative agent of:

 
 
 
 

304. Heterocysts are found in :

 
 
 
 

305. Which causes red tide?

 
 
 
 

306. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Pasteur is famous for his:

 
 
 
 

310. The chromosomal number in:

 
 
 
 

311. 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?

 
 
 
 

312. What are Cyanobacteria?

 
 
 
 

313. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Which of the following are included in Tracheophyta?

 
 
 
 

318. Pollination drop is:

 
 
 
 

319. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

321. Fruits are not found in Cycas because:

 
 
 
 

322. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

323. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. Which of the following is sago palm?

 
 
 
 

327. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

336. . Tapetum develops in:

 
 
 
 

337. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

339. Why is Cycas called a living fossil?

 
 
 
 

340. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

345. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

347. 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:

 
 
 
 

348. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

350. The smallest bacterium is:

 
 
 
 

351. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

353. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

355. Desired type of Cycas can be grown by:

 
 
 
 

356. Which organisms are the oldest life forms?

 
 
 
 

357. Azolla growing in paddy fields helps in:

 
 
 
 

358. What is streptomycin?

 
 
 
 

359. Vegetative reproduction in Cycas is by means of :

 
 
 
 

360. Standard size of a herbarium sheet is:

 
 
 
 

361. Water-borne bacterial diseases are:

 
 
 
 

362. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

369. Seeds are characteristically found in:

 
 
 
 

370. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

380. Redness of red sea is due to :

 
 
 
 

381. The fern plant is:

 
 
 
 

382. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Broad spectrum antibiotic is, which:

 
 
 
 

387. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

389. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

391. Photosynthetic bacteria have:

 
 
 
 

392. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

394. 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?

 
 
 
 

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

 
 
 
 

396. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

398. Lichens reproduce by :

 
 
 
 

399. Ovary is absent in:

 
 
 
 

400. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

402. Clostridium can:

 
 
 
 

403. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

406. Which is a fungicide?

 
 
 
 

407. Black rust of wheat is caused by:

 
 
 
 

408. In moss, sporophyte is formed on:

 
 
 
 

409. The gametophyte of fern is as:

 
 
 
 

410. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. Genetic material of TMV is:

 
 
 
 

415. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

417. Virus and bacteriophage are made-up of:

 
 
 
 

418. Heterospory is the production of:

 
 
 
 

419. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. Agar-agar is obtained from:

 
 
 
 

424. Ectocarpus produces:

 
 
 
 

425. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

427. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

429. Antibiotics cure the disease by:

 
 
 
 

430. The plants of Funaria grow :

 
 
 
 

431. Acetobacter is useful in:

 
 
 
 

432. Ovules are not found enclosed in ovary of:

 
 
 
 

433. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

435. In tracheophyta:

 
 
 
 

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

 
 
 
 

437. The Rhizopus is:

 
 
 
 

438. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

440. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

441. In Gymnocarpeae the fruiting body is :

 
 
 
 

442. Rhizopus and yeast are usually:

 
 
 
 

443. Funaria is :

 
 
 
 

444. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

446. Chemosynthetic bacteria are:

 
 
 
 

447. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

449. The fungi used as food are:

 
 
 
 

450. All algae have:

 
 
 
 

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

 
 
 
 

452. Which of the following is a monocot?

 
 
 
 

453. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

456. Fern prothallus produces:

 
 
 
 

457. Pinus is:

 
 
 
 

458. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Wine turns sour because of:

 
 
 
 

462. E coli is a:

 
 
 
 

463. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

465. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. Who discovered streptomycin?

 
 
 
 

470. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

472. The largest alga is:

 
 
 
 

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

 
 
 
 

474. One of the distinctive feature of Spirogyra is :

 
 
 
 

475. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

477. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. An alga which is rich in proteins:

 
 
 
 

486. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

488. Red rot of sugarcane is caused by :

 
 
 
 

489. Reserve food in Euglena is:

 
 
 
 

490.

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

 
 
 
 

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

 
 
 
 

493. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

495. Nannandria are:

 
 
 
 

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

 
 
 
 

497. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

499. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

501. 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?

 
 
 
 

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

 
 
 
 

503. The coralloid roots are :

 
 
 
 

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

 
 
 
 

505. Smut of maize is caused by :

 
 
 
 

506. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

508. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

512. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

515. The sporangiophores in Rhizopus are:

 
 
 
 

516. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

518. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

520. Yeast belongs to class:

 
 
 
 

521. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

523. Ginkgo biloba is a:

 
 
 
 

524. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. First animal pathogenic virus was discovered by:

 
 
 
 

528. Some biologists have used the term Mycetozoa for:

 
 
 
 

529. Most resistant spore in bacteria is:

 
 
 
 

530. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

532. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. Fruits are not found in:

 
 
 
 

536. Cell walls of Gram-positive bacteria contain:

 
 
 
 

537. In moss, sporogenous tissue arises from:

 
 
 
 

538. Disease resistant plant varieties can be produced by :

 
 
 
 

539. Most common type of conjugation in Spirogyra is :

 
 
 
 

540. Viruses have:

 
 
 
 

541. The leaf of Cycas shows:

 
 
 
 

542. Which lichen is called Reindeer moss?

 
 
 
 

543. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Pollination in Cycas takes place by :

 
 
 
 

547. Generic name of mango is:

 
 
 
 

548. Who among the following discovered virus?

 
 
 
 

549. Cycas plant in appearance resembles :

 
 
 
 

550. Viroids have:

 
 
 
 

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

 
 
 
 

552. Germ theory of disease was proposed by:

 
 
 
 

553. Nitrifying bacteria play an important role by converting:

 
 
 
 

554. The sexual reproductive organs in Rhizopus are:

 
 
 
 

555. The sporophyte of Riccia is :

 
 
 
 

556. Oswald Tippo’s classification is:

 
 
 
 

557. Usually, bacteria reproduce by:

 
 
 
 

558. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

559. Plasmids are:

 
 
 
 

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

 
 
 
 

561. Tautonyms are illegitimate in:

 
 
 
 

562. Which one of the following statement is wrong?

 
 
 
 

563. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. The most primitive vascular plants is:

 
 
 
 

567. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

568. Male gametes in Dryopteris are:

 
 
 
 

569. Methanogens belong to:

 
 
 
 

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

 
 
 
 

571. Late blight of potato is caused by :

 
 
 
 

572. The roots of Cycas are :

 
 
 
 

573. Which is a tautonym?

 
 
 
 

574. Spermatophyta are characterized by producing:

 
 
 
 

575. Fairy ring is the name given to:

 
 
 
 

576. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. 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?

 
 
 
 

581. The microsporophylls on the cone of Cycas are :

 
 
 
 

582. Penicillin was discovered by:

 
 
 
 

583. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

585. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

587. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. Most primitive kind of flower is represented by:

 
 
 
 

591. Pollination in Pinus is :

 
 
 
 

592. Heterosporous pteridophytes always form:

 
 
 
 

593. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Cap cells are found in the filament of:

 
 
 
 

597. Little leaf disease of Brinjal is caused by:

 
 
 
 

598. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

600. Cycas is:

 
 
 
 

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

 
 
 
 

602. Late blight of potato is caused by:

 
 
 
 

603. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

605. Chief constituents of bordeaux mixture are :

 
 
 
 

606. What is a vector?

 
 
 
 

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

 
 
 
 

608. Facultative saprophyte is:

 
 
 
 

609. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

611. Fertility of the soil is increased by:

 
 
 
 

612. The gametophyte of moss has distinct phases :

 
 
 
 

613. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

615. Saccharomyces is well known for:

 
 
 
 

616. Red rot of sugarcane is caused by:

 
 
 
 

617. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. Green plants are classified as:

 
 
 
 

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

 
 
 
 

622. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

624. The teeth of peristome of Funaria are :

 
 
 
 

625. Total parasites belong to:

 
 
 
 

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

 
 
 
 

627. LSD is:

 
 
 
 

628. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

630. Choose the correct statement about Spirogyra:

 
 
 
 

631. Enzymes are absent in:

 
 
 
 

632. Centric discoid form of diatom is:

 
 
 
 

633. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

635.

 

636. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. Seeds are characteristically found in :

 
 
 
 

644. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. Bacteriophages have been used as:

 
 
 
 

649. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

651. Lichens are indicators of :

 
 
 
 

652. Most primitive group of vascular plants are:

 
 
 
 

653. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. TMV was isolated in crystalline form by:

 
 
 
 

657. Rhizoids of Riccia are :

 
 
 
 

658. Bacteria are found everywhere, except:

 
 
 
 

659. How is moss different from fern?

 
 
 
 

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

 
 
 
 

661. Who named prion?

 
 
 
 

662. Kuru, a human disease is caused by:

 
 
 
 

663. The leaves of Funaria are :

 
 
 
 

664. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

665. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. In Funaria :

 
 
 
 

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

 
 
 
 

670. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

672. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

673. The sporangia of Selaginella are attached:

 
 
 
 

674. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. The lambda phase is a:

 
 
 
 

678. Triple antigen injection or vaccine are for:

 
 
 
 

679. The first to isolate a plant virus was:

 
 
 
 

680. Proembryo in Pinus is :

 
 
 
 

681. Acellular slime mold is/are:

 
 
 
 

682. The fungi that grow on wood are called:

 
 
 
 

683. The prothallus of fern is:

 
 
 
 

684. An Hfr bacterium is one that contains:

 
 
 
 

685. The development of Selaginella embryo is:

 
 
 
 

686. The young leaves of Cycas have :

 
 
 
 

687. A gill of Agaricus:

 
 
 
 

688. Lichen show :

 
 
 
 

689. Facultative parasite is:

 
 
 
 

690. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

692. Typhoid in man is caused by:

 
 
 
 

693. Most appropriate word for protozoans is:

 
 
 
 

694. Interferon is a:

 
 
 
 

695. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. The leaves of Funaria are :

 
 
 
 

700. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

702. Winged seeds are found in :

 
 
 
 

703. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

705. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. Botulinum toxin effects:

 
 
 
 

709. Gram stain is used to:

 
 
 
 

710. Yeast is a source of:

 
 
 
 

711. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

716. The most important property of yeast is:

 
 
 
 

717. Pasteurized milk is:

 
 
 
 

718. In Pteris, the roots are:

 
 
 
 

719. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

724. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

726. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. Which of the following applies to Selaginella?

 
 
 
 

730. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

732. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Placenta in fern is:

 
 
 
 

737. Which of the following statements is not correct?

 
 
 
 

738. Which of the following lichens is harmful?

 
 
 
 

739. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

743. The tallest moss in the world is :

 
 
 
 

744. The archegonia of Selaginella are differentiated by:

 
 
 
 

745. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

747. What is the role of nitrifying bacteria?

 
 
 
 

748. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

760. Fern prothallus is:

 
 
 
 

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

 
 
 
 

762. Meristele of fern is:

 
 
 
 

763. The fungi are usually:

 
 
 
 

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

 
 
 
 

765. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Lichens form the first community in

 
 
 
 

769. Small epidermal swellings due to infection are called :

 
 
 
 

770. Which is not found in bacteria?

 
 
 
 

771. 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:

 
 
 
 

772. Ovary is absent in :

 
 
 
 

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

 
 
 
 

774. In Cycas:

 
 
 
 

775. In binomial system most of the words are:

 
 
 
 

776. Virion refers to:

 
 
 
 

777. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

779. Fruits are not found in :

 
 
 
 

780. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

782. The rhizoids of Funaria are :

 
 
 
 

783. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Cryptogams include :

 
 
 
 

788. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

790. The stele of Dryopteris is a:

 
 
 
 

791. Mostly type of zygospore in Ulothrix is:

 
 
 
 

792. Penicillin is obtained from:

 
 
 
 

793. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Lichens are ecologically important because :

 
 
 
 

797. Which of the following is true for viruses?

 
 
 
 

798. Cycas is similar to a mustard plant :

 
 
 
 

799. Heterospory and ligulate leaves are a feature of:

 
 
 
 

800. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

803. Mycoplasma contains:

 
 
 
 

804. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

806. Cellular slime mold is:

 
 
 
 

807. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

809. Simple polyembryony is found in :

 
 
 
 

810. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

813. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. The two conjugating gametangia of Rhizopus are:

 
 
 
 

818. In dinoflagellates, the two flagella are:

 
 
 
 

819. Asexual reproductive body of Volvox is called:

 
 
 
 

820. Which is not true for Escherichia coli?

 
 
 
 

821. The nucleus of bacteria is:

 
 
 
 

822. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

825. The fungi are mostly:

 
 
 
 

826. Early blight of potato is caused by:

 
 
 
 

827. Metulae are found in:

 
 
 
 

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

 
 
 
 

829. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

833. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

838. Funaria is :

 
 
 
 

839. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. In Gymnosperms endosperm is a:

 
 
 
 

843. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

845. Which fixes atmospheric nitrogen?

 
 
 
 

846. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

851. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

856. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

858. Bacteria growing on synthetic medium are called:

 
 
 
 

859. Which is an edible fungus?

 
 
 
 

860. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Which of the following have a prokaryotic cell?

 
 
 
 

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