Quiz_Random

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

 
 
 
 

2. In Pteris, the archegonia are present:

 
 
 
 

3. Rhizopus and yeast are usually:

 
 
 
 

4. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

6. Vascular cryptogam is the term used for :

 
 
 
 

7. Antibiotic has been extracted from :

 
 
 
 

8. Mycoplasmas are not viruses in nature because:

 
 
 
 

9. Acellular slime mold is/are:

 
 
 
 

10. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

15. Linnaeus is credited with introducing:

 
 
 
 

16. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Cycas is :

 
 
 
 

28. Pteridophytes are also known as :

 
 
 
 

29. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Simple polyembryony is found in :

 
 
 
 

34. In dinoflagellates, the two flagella are:

 
 
 
 

35. 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?

 
 
 
 

36. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

41. Ethylene oxide is widely used to:

 
 
 
 

42. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. The spur of Pinus roxburghii has :

 
 
 
 

48. Citrus canker is caused by :

 
 
 
 

49. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Which of the following have algal zone?

 
 
 
 

54. The middle sterile part of capsule is called:

 
 
 
 

55. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

60. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

65. Which bacteria convert nitrate into nitrogen?

 
 
 
 

66. The ferns are usually found:

 
 
 
 

67. Lichens form the first community in

 
 
 
 

68. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Genetic material of TMV is:

 
 
 
 

72. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Which is the correct statement about Selaginella?

 
 
 
 

79. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

81. Streptomycin is obtained from:

 
 
 
 

82. Ovules are not found enclosed in ovary of:

 
 
 
 

83. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

85. The ascus of yeast contains:

 
 
 
 

86. The tree fern is:

 
 
 
 

87. Botulism is a:

 
 
 
 

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

 
 
 
 

89. Yeast belongs to class:

 
 
 
 

90. Viruses are commonly transmitted in plants through:

 
 
 
 

91. The roots of Cycas are :

 
 
 
 

92. The chloroplast of Chlamydomonas are:

 
 
 
 

93. Embryophyta includes:

 
 
 
 

94. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Late blight of potato is caused by:

 
 
 
 

101. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

103. To which country Antony van Leeuwenhoek belong?

 
 
 
 

104. Bacteria are placed under:

 
 
 
 

105. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

107. Viroids have:

 
 
 
 

108. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

110. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

112. The role of meiosis is for:

 
 
 
 

113. Fruiting body of lichens is :

 
 
 
 

114. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

116. The archegonia of Selaginella are differentiated by:

 
 
 
 

117. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

118. Who among the following discovered virus?

 
 
 
 

119. The fungi that grow on wood are called:

 
 
 
 

120. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

122. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

123. Smut of maize is caused by :

 
 
 
 

124. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

126. Tautonyms are illegitimate in:

 
 
 
 

127. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. 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:

 
 
 
 

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

 
 
 
 

135. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Which of the following is true for viruses?

 
 
 
 

139. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

141. The rhizoids of Funaria are :

 
 
 
 

142. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

144. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

150. Oswald Tippo’s classification is:

 
 
 
 

151. Cycas plant in appearance resembles :

 
 
 
 

152. Select the correct statement: (NEET 2016)

 
 
 
 

153. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

155. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Sporophyte of fern is:

 
 
 
 

159. Vascular tissue is found in :

 
 
 
 

160. LSD is:

 
 
 
 

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

 
 
 
 

162. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

163. Most resistant spore in bacteria is:

 
 
 
 

164. John Hutchinson divided dicots into two divisions:

 
 
 
 

165. Black rust of wheat is caused by:

 
 
 
 

166. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

168. Bacteria growing on synthetic medium are called:

 
 
 
 

169. In Selaginella, the microsporangia are:

 
 
 
 

170. In a bacteriophage, DNA is present in:

 
 
 
 

171. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

173. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

175. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

180. Indusium in Dryopteris is:

 
 
 
 

181. What is absent in Deuteromycetes?

 
 
 
 

182. Detailed study of bacteriophage was made by:

 
 
 
 

183. Cyathia is characterized by:

 
 
 
 

184. What are plasmids?

 
 
 
 

185. Saccharomyces ludwigii ascus produces:

 
 
 
 

186. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

188. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

191. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

193. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. Wine turns sour because of:

 
 
 
 

207. All protozoans possess:

 
 
 
 

208. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

210. Funaria are commonly found :

 
 
 
 

211. 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:

 
 
 
 

212. Small epidermal swellings due to infection are called :

 
 
 
 

213. The chief characteristic of bryophyta is that :

 
 
 
 

214. Lichens are pioneers of vegetation in a :

 
 
 
 

215. The gametophyte of fern is as:

 
 
 
 

216. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. Enzymes are absent in:

 
 
 
 

220. The fungi used as food are:

 
 
 
 

221. Ovary is absent in :

 
 
 
 

222. Ulothrix produces :

 
 
 
 

223. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

225. Fruits are not found in :

 
 
 
 

226. Most common type of conjugation in Spirogyra is :

 
 
 
 

227. The plants of Funaria grow :

 
 
 
 

228. Typhoid in man is caused by:

 
 
 
 

229. All archaebacteria lack:

 
 
 
 

230. Facultative parasite is:

 
 
 
 

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

 
 
 
 

232. Which of the following applies to Selaginella?

 
 
 
 

233. Which lichen is called Reindeer moss?

 
 
 
 

234. Most primitive kind of flower is represented by:

 
 
 
 

235. Isomorphic type alternation of generation is found in:

 
 
 
 

236. Helotism word is used for the symbiosis between :

 
 
 
 

237. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

239. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. What is special feature of fern archegonia?

 
 
 
 

244. Pythium debaryanum is the causative agent of:

 
 
 
 

245. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Sexual reproduction in Rhizopus is by:

 
 
 
 

249. Aflatoxin is produced by:

 
 
 
 

250. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Discovery of penicillin was based on:

 
 
 
 

254. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

256. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Spermatophyta are characterized by producing:

 
 
 
 

260. Quarantine regulations are concerned with:

 
 
 
 

261. Cocci types of bacteria are:

 
 
 
 

262. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. The phloem of vascular system of Cycas is :

 
 
 
 

266. Reserve food in Euglena is:

 
 
 
 

267.

268. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Bivalved siliceous shell or frustule occur in:

 
 
 
 

275. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

277. Spirogyra represents the :

 
 
 
 

278. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. The antibiotic is obtained from:

 
 
 
 

282. Fertility of the soil is increased by:

 
 
 
 

283. 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:

 
 
 
 

284. Bacteria were first discovered by:

 
 
 
 

285. The lichens growing on rocks are called :

 
 
 
 

286. Plasmids are:

 
 
 
 

287. Mucilaginous canals in Cycas are found in :

 
 
 
 

288. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. E coli is a:

 
 
 
 

292. Winged seeds are found in :

 
 
 
 

293. The megasporangium of Selaginella is:

 
 
 
 

294. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

296. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

298. One of the distinctive feature of Spirogyra is :

 
 
 
 

299. The fungi are usually:

 
 
 
 

300. Photosynthetic bacteria have:

 
 
 
 

301. Which is the nuclear material in bacteria?

 
 
 
 

302. Pasteurization of milk involves heating for:

 
 
 
 

303. Circular DNA is seen in:

 
 
 
 

304. Which of the following have a prokaryotic cell?

 
 
 
 

305. Soil fertility is lost by the activities of:

 
 
 
 

306. Enteric bacteria are those bacteria that live:

 
 
 
 

307. The tallest moss in the world is :

 
 
 
 

308. The two conjugating gametangia of Rhizopus are:

 
 
 
 

309. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320.

321. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

323. Pinus gerardiana is :

 
 
 
 

324. Reproduction in Rhizopus is:

 
 
 
 

325. The mode of nutrition of bacteria is usually:

 
 
 
 

326. Cyanophage is a virus that attacks:

 
 
 
 

327. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

329. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

334. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

340. Lichen show :

 
 
 
 

341. Lichens reproduce by :

 
 
 
 

342. Cycas is:

 
 
 
 

343. 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?

 
 
 
 

344. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

348. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

350. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

352. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

354. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. The smallest bacterium is:

 
 
 
 

360. Which is a fungicide?

 
 
 
 

361. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. The development of Selaginella embryo is:

 
 
 
 

365. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

367. Red rot of sugarcane is caused by :

 
 
 
 

368. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Desired type of Cycas can be grown by:

 
 
 
 

372. Which of the following shows heterotrichous habit?

 
 
 
 

373. In moss, peristomial teeth are:

 
 
 
 

374. Parmelia belongs to :

 
 
 
 

375. Select the wrong statement:

 
 
 
 

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

 
 
 
 

377. The mycelium of Rhizopus is:

 
 
 
 

378. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. In moss, reduction division occurs in :

 
 
 
 

388. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

390. Mycoplasma are:

 
 
 
 

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

 
 
 
 

392. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

396. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

400. Banana bunchy top is caused by :

 
 
 
 

401. Which of the following are included in Tracheophyta?

 
 
 
 

402. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

404. 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:

 
 
 
 

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

 
 
 
 

406. The nucleus of bacteria is:

 
 
 
 

407. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

409. Pollination drop is:

 
 
 
 

410. Which is an exception to cell theory?

 
 
 
 

411. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. In Cycas microsporangia are borne on:

 
 
 
 

415. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

416. Funaria can be differentiated from Cycas :

 
 
 
 

417. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

419. Ergot is obtained from :

 
 
 
 

420. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. Ovary is absent in:

 
 
 
 

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

 
 
 
 

425. An alga which is rich in proteins:

 
 
 
 

426. Black rust of wheat is caused by:

 
 
 
 

427. Penicillin was discovered by:

 
 
 
 

428. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

429. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

431. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

434. What are Cyanobacteria?

 
 
 
 

435.

 

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

 
 
 
 

437. Cycas is different from mango in :

 
 
 
 

438. The fungi are mostly:

 
 
 
 

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

 
 
 
 

440. Which one of the following statement is wrong?

 
 
 
 

441. In Gymnocarpeae the fruiting body is :

 
 
 
 

442. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

444. Choose the correct statement about Spirogyra:

 
 
 
 

445. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

447. Bacteria differ from viruses in being sensitive to:

 
 
 
 

448. Club moss is the common name of :

 
 
 
 

449. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

450. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

454. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Embryophyta includes :

 
 
 
 

467. Transfusion tissue is present in the leaflet of:

 
 
 
 

468. The sexual reproductive organs in Rhizopus are:

 
 
 
 

469. The truncated cone of HIV consists of:

 
 
 
 

470. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

475. 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:

 
 
 
 

476. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

478. Which organisms are the oldest life forms?

 
 
 
 

479. Diphtheria is caused by:

 
 
 
 

480. Downy mildew disease is caused by :

 
 
 
 

481. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

483. Protozoans are considered animals because these are:

 
 
 
 

484. Number of capsomeres forming capsid of TMV is:

 
 
 
 

485. Streptomyces falls under:

 
 
 
 

486. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

487. Photoautotrophic bacteria have:

 
 
 
 

488. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

490. Methanogens belong to:

 
 
 
 

491. Green plants are classified as :

 
 
 
 

492. Liverworts are included in :

 
 
 
 

493. Mostly type of zygospore in Ulothrix is:

 
 
 
 

494. Which is a tautonym?

 
 
 
 

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

 
 
 
 

496. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

498. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. Pseudomycelium is found in:

 
 
 
 

503. Which causes red tide?

 
 
 
 

504. Which fixes atmospheric nitrogen?

 
 
 
 

505. Selaginella differs from Moss in having:

 
 
 
 

506. Ginkgo biloba is a:

 
 
 
 

507. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

509. Lichens show :

 
 
 
 

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

 
 
 
 

511. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. In binomial system most of the words are:

 
 
 
 

515. All algae have:

 
 
 
 

516. Virion refers to:

 
 
 
 

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

 
 
 
 

518. The largest known bacterium is:

 
 
 
 

519. Green plants are classified as:

 
 
 
 

520. Most of the lichens are composed of :

 
 
 
 

521. Infective part of virus was discovered by:

 
 
 
 

522. Lichens reproduce by :

 
 
 
 

523. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

525. Sporophyte of Funaria is :

 
 
 
 

526. Special feature of pollen grains of Pinus is :

 
 
 
 

527. Redness of red sea is due to :

 
 
 
 

528. The root nodules of leguminous plants contain:

 
 
 
 

529. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

531. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. Generic name of mango is:

 
 
 
 

535. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

537. In tracheophyta:

 
 
 
 

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

 
 
 
 

539. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. Sleeping sickness disease in man is caused by:

 
 
 
 

543. What is the role of nitrifying bacteria?

 
 
 
 

544. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

549. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. The largest alga is:

 
 
 
 

553. In Cycas:

 
 
 
 

554. The first to isolate a plant virus was:

 
 
 
 

555. Vegetative reproduction in Cycas is by means of :

 
 
 
 

556. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

558. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

560. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Cycas revoluta is widely grown as :

 
 
 
 

564. Meristele of fern is:

 
 
 
 

565. Which of the following is true for Selaginella?

 
 
 
 

566. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

573. In moss, stomata are found:

 
 
 
 

574. Amoeba is a member of the phylum:

 
 
 
 

575. Fern plants are:

 
 
 
 

576. Interferon is a:

 
 
 
 

577. What is mycorrhiza?

 
 
 
 

578. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

580. Red rot of sugarcane is caused by:

 
 
 
 

581. Water-borne bacterial diseases are:

 
 
 
 

582. The chromosomal number in:

 
 
 
 

583. Mycoplasma are sensitive to:

 
 
 
 

584. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Siphonogamy is found in:

 
 
 
 

590. Synzoospore is produced in:

 
 
 
 

591. Cryptogams include :

 
 
 
 

592. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

594. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. In moss, sporophyte is formed on:

 
 
 
 

599. Among the algae kelps are :

 
 
 
 

600. Cell walls of Gram-positive bacteria contain:

 
 
 
 

601. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

603. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

606. Some diseases caused by bacteria are:

 
 
 
 

607. Leprosy is caused by:

 
 
 
 

608. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Iodine is obtained from:

 
 
 
 

612. Metulae are found in:

 
 
 
 

613. The antherozoids of Funaria are :

 
 
 
 

614. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

616. Bacteria are found everywhere, except:

 
 
 
 

617. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

619. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

620. The leafy fern plant represents the:

 
 
 
 

621. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. Late blight of potato is caused by :

 
 
 
 

626. Some bacteria cannot be killed easily because of:

 
 
 
 

627. Yeast is a source of:

 
 
 
 

628. In a diplontic life cycle:

 
 
 
 

629. Protists which are diploid reproduce sexually by:

 
 
 
 

630. 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?

 
 
 
 

631. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

633. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

635. TMV was isolated in crystalline form by:

 
 
 
 

636. Bacteriophage consists of:

 
 
 
 

637. Early blight of potato is caused by:

 
 
 
 

638. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

640. The zoospores of Ulothrix are :

 
 
 
 

641. Select the wrong statement:

 
 
 
 

642. Each chloroplast in Spirogyra bears :

 
 
 
 

643. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

648. Broad spectrum antibiotic is, which:

 
 
 
 

649. Funaria is :

 
 
 
 

650. Total parasites belong to:

 
 
 
 

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

 
 
 
 

652. In Herpes virus DNA is:

 
 
 
 

653. Gametophyte is the main plant body in :

 
 
 
 

654. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

656. What is a vector?

 
 
 
 

657. Botulinum toxin effects:

 
 
 
 

658. The microsporophylls on the cone of Cycas are :

 
 
 
 

659. Maximum diversity of life forms occurs in :

 
 
 
 

660. Lichens are the indicator of pollution :

 
 
 
 

661. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

663. The source of litmus is :

 
 
 
 

664. Virus and bacteriophage are made-up of:

 
 
 
 

665. Which of the following statements is not correct?

 
 
 
 

666. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

668. Pasteur is famous for his:

 
 
 
 

669. Pteridophyta are also called:

 
 
 
 

670. The order generally ends with:

 
 
 
 

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

 
 
 
 

672. Most primitive group of vascular plants are:

 
 
 
 

673. Anoxygenic photosynthesis occurs in:

 
 
 
 

674. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

676. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Where does meiosis occur in yeast?

 
 
 
 

680. An Hfr bacterium is one that contains:

 
 
 
 

681. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

683. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. Facultative saprophyte is:

 
 
 
 

692. Leaf spot of groundnut is caused by :

 
 
 
 

693. Which statement is wrong in regard to bacteria?

 
 
 
 

694. Germination of the seed of Pinus is :

 
 
 
 

695. Disease resistant plant varieties can be produced by :

 
 
 
 

696. Male gametophyte of Selaginella is found:

 
 
 
 

697. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

702. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

704. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

709. Gram stain is used to:

 
 
 
 

710. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

712. Mycoplasma is different from bacteria due to:

 
 
 
 

713. In angiosperms double fertilization represents:

 
 
 
 

714. Mycoplasma was discovered by:

 
 
 
 

715. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

717. Pollination in Cycas takes place by :

 
 
 
 

718. Antibiotics cure the disease by:

 
 
 
 

719. Asexual reproductive body of Volvox is called:

 
 
 
 

720. Water-net is the name of:

 
 
 
 

721. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Vascular cryptogams is the term used for:

 
 
 
 

725. The Rhizopus is:

 
 
 
 

726. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Why is Cycas called a living fossil?

 
 
 
 

731. The sporangium of fern contains nearly:

 
 
 
 

732. In moss, sporogenous tissue arises from:

 
 
 
 

733. The sporangia of Selaginella are attached:

 
 
 
 

734. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

736. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. The leaf of Cycas shows:

 
 
 
 

740. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

741. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

743. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

745. The stele of Dryopteris is a:

 
 
 
 

746. Club moss and Peat moss belong to:

 
 
 
 

747. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

750. Viruses have:

 
 
 
 

751. Milk is converted to curd by:

 
 
 
 

752. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

754. Fern phloem lacks:

 
 
 
 

755. Cycas is similar to a mustard plant :

 
 
 
 

756. Meiosis in Ulothrix takes place:

 
 
 
 

757. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

759. Which of the following are absent in Mycoplasma?

 
 
 
 

760. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

762. How a fern differs from a moss?

 
 
 
 

763. The smallest unit of classification is:

 
 
 
 

764. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Zoogametes are not found in:

 
 
 
 

769. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

771. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

773. Some biologists have used the term Mycetozoa for:

 
 
 
 

774. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

777. Pinus microsporophyll bears:

 
 
 
 

778. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

780. The most primitive vascular plants is:

 
 
 
 

781. In Funaria :

 
 
 
 

782. Which of the following does not contain chlorophyll?

 
 
 
 

783. Azolla growing in paddy fields helps in:

 
 
 
 

784. Heterospory and ligulate leaves are a feature of:

 
 
 
 

785. The photosynthetic protists are:

 
 
 
 

786. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

791. Kuru, a human disease is caused by:

 
 
 
 

792. Fruits are not found in:

 
 
 
 

793. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Yeast grows more rapidly in:

 
 
 
 

797. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

801. The archegonia in Selaginella develop on:

 
 
 
 

802. Which of the following are included in Tracheophyta?

 
 
 
 

803. The disease symptom necrosis refers to :

 
 
 
 

804. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

809. Spirogyra differs from moss protonema in having :

 
 
 
 

810. The flagella of Chlamydomonas are:

 
 
 
 

811. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

813. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. 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:

 
 
 
 

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

 
 
 
 

818. Longest known virus is:

 
 
 
 

819.

820. Chief constituents of bordeaux mixture are :

 
 
 
 

821. Rhizophore of Selaginella is:

 
 
 
 

822. Placenta in fern is:

 
 
 
 

823. The DNA of E coli is:

 
 
 
 

824. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Majority of lichens are :

 
 
 
 

829. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. Pneumonia is caused by:

 
 
 
 

840. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

842. Economic importance of bacteria lies in their being:

 
 
 
 

843. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. Which one of the following is a monocot?

 
 
 
 

850. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Which is an edible fungus?

 
 
 
 

856. Nannandria are:

 
 
 
 

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

 
 
 
 

858. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

860. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. The young leaves of Cycas have :

 
 
 
 

864. Most appropriate word for protozoans is: