Quiz_Random

1. In Pteris, the roots are:

 
 
 
 

2. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

4. Select the wrong statement:

 
 
 
 

5. All algae have:

 
 
 
 

6. The sporangia of Selaginella are attached:

 
 
 
 

7. All protozoans possess:

 
 
 
 

8. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Fern prothallus produces:

 
 
 
 

12. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

13. Which is a gametophytic tissue?

 
 
 
 

14. Ergot is obtained from :

 
 
 
 

15.

16. The prothallus of fern is:

 
 
 
 

17. Methanogens belong to:

 
 
 
 

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

 
 
 
 

19. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

21. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

23. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

25. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

27. Infective part of virus was discovered by:

 
 
 
 

28. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

30. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. The source of litmus is :

 
 
 
 

35. Which of the following have a prokaryotic cell?

 
 
 
 

36. The upper region of moss capsule is :

 
 
 
 

37. Gymnosperms could also be called as:

 
 
 
 

38. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Ethylene oxide is widely used to:

 
 
 
 

42. John Hutchinson divided dicots into two divisions:

 
 
 
 

43. The lichens growing on rocks are called :

 
 
 
 

44. Acellular slime mold is/are:

 
 
 
 

45. Why is Cycas called a living fossil?

 
 
 
 

46. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

48. Male gametophyte of Selaginella is found:

 
 
 
 

49. The seedless plants which possess vascular tissues are:

 
 
 
 

50. Embryophyta includes :

 
 
 
 

51. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

53. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. Antibiotics cure the disease by:

 
 
 
 

58. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. 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:

 
 
 
 

62. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

64. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. In Gymnocarpeae the fruiting body is :

 
 
 
 

70. Select the wrong statement:

 
 
 
 

71. Clostridium can:

 
 
 
 

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

 
 
 
 

73. Most resistant spore in bacteria is:

 
 
 
 

74. The gametophyte produced by apospory is :

 
 
 
 

75. Liverworts are included in :

 
 
 
 

76. Bacteriophages have been used as:

 
 
 
 

77. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

79. E coli is a:

 
 
 
 

80. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

82. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Proembryo in Pinus is :

 
 
 
 

86. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Selaginella differs from Moss in having:

 
 
 
 

90. Embryo formation is not known in :

 
 
 
 

91. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Seeds are characteristically found in:

 
 
 
 

99. Pythium debaryanum is the causative agent of:

 
 
 
 

100. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

102. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

111. Germination of the seed of Pinus is :

 
 
 
 

112. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

114. Indusium in Dryopteris is:

 
 
 
 

115. Some biologists have used the term Mycetozoa for:

 
 
 
 

116. Genetic material of TMV is:

 
 
 
 

117. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. 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:

 
 
 
 

121. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Nitrifying bacteria play an important role by converting:

 
 
 
 

129. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

131. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

133. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Fern plants are:

 
 
 
 

139. How is moss different from fern?

 
 
 
 

140. The fungi are mostly:

 
 
 
 

141. The most primitive vascular plants is:

 
 
 
 

142. The antherozoids of Funaria are :

 
 
 
 

143. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

147. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

149. Funaria can be differentiated from Cycas :

 
 
 
 

150. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

152. Spores of which plants have chloroplast:

 
 
 
 

153. Viroids have:

 
 
 
 

154. Cellular slime mold is:

 
 
 
 

155. Halophiles are the bacteria that require for growth:

 
 
 
 

156. Fruiting body of lichens is :

 
 
 
 

157. All archaebacteria lack:

 
 
 
 

158. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. In Cycas:

 
 
 
 

163. First animal pathogenic virus was discovered by:

 
 
 
 

164. The largest alga is:

 
 
 
 

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

 
 
 
 

166. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

168. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

170. Which group of algae have an incipient nucleus?

 
 
 
 

171. Fruits are not found in :

 
 
 
 

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

 
 
 
 

173. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

179. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

184. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

186. 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?

 
 
 
 

187. Penicillin is obtained from:

 
 
 
 

188. Bivalved siliceous shell or frustule occur in:

 
 
 
 

189. Vascular cryptogam is the term used for :

 
 
 
 

190. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

201. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

208. Bacteriophage consists of:

 
 
 
 

209. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

210. What are plasmids?

 
 
 
 

211. Rhizoids of Riccia are :

 
 
 
 

212. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

222. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

224. Agar-agar is obtained from:

 
 
 
 

225. Which is the nuclear material in bacteria?

 
 
 
 

226. The mycelium of Rhizopus is:

 
 
 
 

227. The largest known bacterium is:

 
 
 
 

228. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

230. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

232. Protists which are diploid reproduce sexually by:

 
 
 
 

233. Pollination in Pinus is :

 
 
 
 

234. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

236. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

241. Ginkgo biloba is a:

 
 
 
 

242. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

244. Isomorphic type alternation of generation is found in:

 
 
 
 

245. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

248. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

250. Who among the following discovered virus?

 
 
 
 

251. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

254. In dinoflagellates, the two flagella are:

 
 
 
 

255. Which is absent from the xylem of Cycas?

 
 
 
 

256. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

258. 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?

 
 
 
 

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

 
 
 
 

260. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. The leaves of Funaria are :

 
 
 
 

264. The gametophyte of fern is as:

 
 
 
 

265. Lichens are the indicator of pollution :

 
 
 
 

266. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

268. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

270. Ergot of rye is caused by:

 
 
 
 

271. What is absent in Deuteromycetes?

 
 
 
 

272. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. The sporophyte of Riccia is represented by :

 
 
 
 

276. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Standard size of a herbarium sheet is:

 
 
 
 

281. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

283. Black rust of wheat is caused by:

 
 
 
 

284. What is a vector?

 
 
 
 

285. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. 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:

 
 
 
 

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

 
 
 
 

291. Vascular cryptogams is the term used for:

 
 
 
 

292. The development of sporangium in Selaginella is:

 
 
 
 

293. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

295. The roots of Cycas are :

 
 
 
 

296. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. Pteridophytes are also known as :

 
 
 
 

300. Mycoplasma are:

 
 
 
 

301. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

306. Penicillin was discovered by:

 
 
 
 

307. Viruses are considered to be:

 
 
 
 

308. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

310. Enteric bacteria are those bacteria that live:

 
 
 
 

311. Which of the following is true for viruses?

 
 
 
 

312. Green plants are classified as :

 
 
 
 

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

 
 
 
 

314. Black rust of wheat is caused by:

 
 
 
 

315. Bentham and Hooker placed gymnosperms:

 
 
 
 

316. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

318. 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:

 
 
 
 

319. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

324. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

333. Wine turns sour because of:

 
 
 
 

334. Which of the following is true for Selaginella?

 
 
 
 

335. Botulism is a:

 
 
 
 

336. Which of the following is sago palm?

 
 
 
 

337. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

339. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

341. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

343. Sometimes the bacterial cell is enclosed in:

 
 
 
 

344. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

346. Coenogamete is found in:

 
 
 
 

347. Pasteurized milk is:

 
 
 
 

348. Rhizopus and yeast are usually:

 
 
 
 

349. The lambda phase is a:

 
 
 
 

350. Milk is converted to curd by:

 
 
 
 

351. Each chloroplast in Spirogyra bears :

 
 
 
 

352. The microsporophylls on the cone of Cycas are :

 
 
 
 

353. The archegonia of Selaginella are differentiated by:

 
 
 
 

354. Transfusion tissue is present in the leaflet of:

 
 
 
 

355. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

358. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

360. The ascus of yeast contains:

 
 
 
 

361. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

363. Funaria is a Bryophyta because :

 
 
 
 

364. Majority of lichens are :

 
 
 
 

365. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

368. The tree fern is:

 
 
 
 

369. Pasteurization of milk involves heating for:

 
 
 
 

370. Iodine is obtained from:

 
 
 
 

371. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

376. Viruses have:

 
 
 
 

377. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

379. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

381. Heterospory is the production of:

 
 
 
 

382. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

387. The sporophyte of Riccia is :

 
 
 
 

388. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

390. Cycas is different from mango in :

 
 
 
 

391.

 

392. Pseudomycelium is found in:

 
 
 
 

393. What is special feature of fern archegonia?

 
 
 
 

394. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

400. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

402. Rhizophore of Selaginella is:

 
 
 
 

403. Interferon is a:

 
 
 
 

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

 
 
 
 

405. Which is a tautonym?

 
 
 
 

406. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. The Rhizopus is:

 
 
 
 

410. Which among the following is a shrub?

 
 
 
 

411. The chromosomal number in:

 
 
 
 

412. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

414. 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?

 
 
 
 

415. In Funaria, calyptra is derived from :

 
 
 
 

416. Ulothrix produces :

 
 
 
 

417. Smut of maize is caused by :

 
 
 
 

418. LSD is:

 
 
 
 

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

 
 
 
 

420. Among the algae kelps are :

 
 
 
 

421. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

423. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

425. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

426. Which of the following are included in Tracheophyta?

 
 
 
 

427. Virus and bacteriophage are made-up of:

 
 
 
 

428. The male gametes of Pinus are :

 
 
 
 

429. Woody climbers are known as :

 
 
 
 

430. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

432. The ferns are usually found:

 
 
 
 

433. Nannandria are:

 
 
 
 

434. Usually, bacteria reproduce by:

 
 
 
 

435. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

436. Chief constituents of bordeaux mixture are :

 
 
 
 

437. The development of Selaginella embryo is:

 
 
 
 

438. The teeth of peristome of Funaria are :

 
 
 
 

439. Which is a redwood tree?

 
 
 
 

440. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

442. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Lichens are pioneers of vegetation in a :

 
 
 
 

447. To which class Riccia belongs :

 
 
 
 

448. Seeds are characteristically found in :

 
 
 
 

449. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Who named prion?

 
 
 
 

453. Red rot of sugarcane is caused by :

 
 
 
 

454. Ovary is absent in:

 
 
 
 

455. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

457. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. The spur of Pinus roxburghii has :

 
 
 
 

463. In tracheophyta:

 
 
 
 

464. The orders generally have the uniform endings:

 
 
 
 

465. Heterotrichous habit means :

 
 
 
 

466. Lichen show :

 
 
 
 

467. TMV was isolated in crystalline form by:

 
 
 
 

468. The sporangium of fern contains nearly:

 
 
 
 

469. Ectocarpus produces:

 
 
 
 

470. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

472. Bryophyta have been placed in cryptogams because:

 
 
 
 

473. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

480. In moss, sporogenous tissue arises from:

 
 
 
 

481. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

483. In Funaria :

 
 
 
 

484. In a bacteriophage, DNA is present in:

 
 
 
 

485. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

487. In moss, sporophyte is formed on:

 
 
 
 

488. Maximum diversity of life forms occurs in :

 
 
 
 

489. Who discovered heterothallism in fungi?

 
 
 
 

490. In moss, reduction division occurs in :

 
 
 
 

491. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

493. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

495. Lichens form the first community in

 
 
 
 

496. Embryophyta includes:

 
 
 
 

497. Bryophyta have a special character from other plants:

 
 
 
 

498. Psilotum is:

 
 
 
 

499. Climbers are found in genus:

 
 
 
 

500. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

502. The chief characteristic of bryophyta is that :

 
 
 
 

503. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

505. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Fertility of the soil is increased by:

 
 
 
 

509. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

511. Synzoospore is produced in:

 
 
 
 

512. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

513. The zygospore in Rhizopus on germination forms:

 
 
 
 

514. Early blight of potato is caused by:

 
 
 
 

515. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

521. Funaria are commonly found :

 
 
 
 

522. The zoospores of Ulothrix are :

 
 
 
 

523. An alga which is rich in proteins:

 
 
 
 

524. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

529.

530. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

532. Bacteria are placed under:

 
 
 
 

533. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. Vegetative reproduction in Cycas is by means of :

 
 
 
 

537. Anoxygenic photosynthesis occurs in:

 
 
 
 

538. Water-net is the name of:

 
 
 
 

539. Mixed cropping helps :

 
 
 
 

540. Lichens reproduce by :

 
 
 
 

541. Meristele of fern is:

 
 
 
 

542. Ovules are not found enclosed in ovary of:

 
 
 
 

543. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

545. Smallpox is caused by:

 
 
 
 

546. Which of the following lichens is harmful?

 
 
 
 

547. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

549. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. Amoeba is a member of the phylum:

 
 
 
 

554. Cycas revoluta is widely grown as :

 
 
 
 

555. Cocci types of bacteria are:

 
 
 
 

556. 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?

 
 
 
 

557. Bacteria differ from viruses in being sensitive to:

 
 
 
 

558. Photosynthetic bacteria have:

 
 
 
 

559. Some diseases caused by bacteria are:

 
 
 
 

560. Most common type of conjugation in Spirogyra is :

 
 
 
 

561. The two conjugating gametangia of Rhizopus are:

 
 
 
 

562. Virion refers to:

 
 
 
 

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

 
 
 
 

564. Oswald Tippo’s classification was based on :

 
 
 
 

565. Heterospory and ligulate leaves are a feature of:

 
 
 
 

566. Most of the algae are :

 
 
 
 

567. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. The megasporangium of Selaginella is:

 
 
 
 

575. Generic name of mango is:

 
 
 
 

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

 
 
 
 

577. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. In moss, peristomial teeth are:

 
 
 
 

581. In angiosperms double fertilization represents:

 
 
 
 

582. The leaf of Cycas shows:

 
 
 
 

583. Gram stain is used to:

 
 
 
 

584. Fern prothallus is:

 
 
 
 

585. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. The disease apple scab is caused by:

 
 
 
 

596. Which of the following applies to Selaginella?

 
 
 
 

597. Streptomycin is obtained from:

 
 
 
 

598. In moss, stomata are found:

 
 
 
 

599. Cryptogams include :

 
 
 
 

600. In Cycas which structure is equivalent to stamen?

 
 
 
 

601. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

604. Sporophyte of fern is:

 
 
 
 

605. In Pteris, the archegonia are present:

 
 
 
 

606. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

608. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

613. Placenta in fern is:

 
 
 
 

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

 
 
 
 

615. Spermatophyta are characterized by producing:

 
 
 
 

616. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Which of the following statement is correct?

 
 
 
 

620. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

622. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

624. Aflatoxin is produced as a product in :

 
 
 
 

625. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Metulae are found in:

 
 
 
 

629. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

631. Spirogyra differs from moss protonema in having :

 
 
 
 

632. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. Lichens show :

 
 
 
 

637. Club moss and Peat moss belong to:

 
 
 
 

638. Which part of Riccia bears nurse cells?

 
 
 
 

639. What are Cyanobacteria?

 
 
 
 

640. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

644. Photosynthetic protists belong to:

 
 
 
 

645. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

647. Which of the following does not contain chlorophyll?

 
 
 
 

648. What is streptomycin?

 
 
 
 

649. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

651. How a fern differs from a moss?

 
 
 
 

652. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

654. Which fixes atmospheric nitrogen?

 
 
 
 

655. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

657. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

659. Reserve food in Euglena is:

 
 
 
 

660. Heterocysts are found in :

 
 
 
 

661. The leafy fern plant represents the:

 
 
 
 

662. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. Which condition is found in Cycas?

 
 
 
 

666. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

668. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

670. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

672. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Downy mildew disease is caused by :

 
 
 
 

680. Iodine is obtained from :

 
 
 
 

681. Sexual reproduction of lichen is due to :

 
 
 
 

682. Cap cells are found in the filament of:

 
 
 
 

683. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

685. White rust of crucifers is caused by:

 
 
 
 

686. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Cyathia is characterized by:

 
 
 
 

690. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Fruits are not found in Cycas because:

 
 
 
 

694. Endemic plants are characterised by their:

 
 
 
 

695. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. Which bacteria convert nitrate into nitrogen?

 
 
 
 

700. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703. Saccharomyces is used in:

 
 
 
 

704. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Mycoplasma is different from bacteria due to:

 
 
 
 

713. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

714. The chloroplast of Chlamydomonas are:

 
 
 
 

715. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

719. The fungi used as food are:

 
 
 
 

720. Asexual reproductive body of Volvox is called:

 
 
 
 

721. Triple antigen injection or vaccine are for:

 
 
 
 

722. Detailed study of bacteriophage was made by:

 
 
 
 

723. The root nodules of leguminous plants contain:

 
 
 
 

724. Which is the correct statement about Selaginella?

 
 
 
 

725. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

727. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

728. The sori in Dryopteris are found on:

 
 
 
 

729. Pythium debaryanum is the causative agent of:

 
 
 
 

730. Saccharomyces is well known for:

 
 
 
 

731. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

732. Pteridophyta are also called:

 
 
 
 

733. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

738. Plasmids are:

 
 
 
 

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

 
 
 
 

740. The first to isolate a plant virus was:

 
 
 
 

741. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

743. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

745. Where does meiosis occur in yeast?

 
 
 
 

746.

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

 
 
 
 

748. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

750. Polystelic condition is found in:

 
 
 
 

751. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

753. In binomial system most of the words are:

 
 
 
 

754. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

757. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

759. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

761. 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:

 
 
 
 

762. One of the distinctive feature of Spirogyra is :

 
 
 
 

763. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

765. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

771. Which causes red tide?

 
 
 
 

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

 
 
 
 

773. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

775. The Rhizopus gametes are formed in:

 
 
 
 

776. NBG of Lucknow is now named as:

 
 
 
 

777. Disease resistant plant varieties can be produced by :

 
 
 
 

778. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

780. Green plants are classified as:

 
 
 
 

781. The chloroplast in Ulothrix is :

 
 
 
 

782. The role of meiosis is for:

 
 
 
 

783. Cyanophage is a virus that attacks:

 
 
 
 

784. Sleeping sickness disease in man is caused by:

 
 
 
 

785. Siphonogamy is found in:

 
 
 
 

786. Pollination in Cycas takes place by :

 
 
 
 

787. Which organisms are the oldest life forms?

 
 
 
 

788. Nitrogen-fixing bacteria may be located:

 
 
 
 

789. The group algae possesses representatives belonging to kingdom:

 
 
 
 

790. Germ theory of disease was proposed by:

 
 
 
 

791. The gametophyte of fern bears:

 
 
 
 

792. The tallest moss in the world is :

 
 
 
 

793. Some bacteria cannot be killed easily because of:

 
 
 
 

794. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Roots are absent in :

 
 
 
 

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

 
 
 
 

799. Which one of the following is a monocot?

 
 
 
 

800. Linnaeus is credited with introducing:

 
 
 
 

801. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

803. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

805. Broad spectrum antibiotic is, which:

 
 
 
 

806. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

809. Longest known virus is:

 
 
 
 

810. The coralloid roots are :

 
 
 
 

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

 
 
 
 

812. Funaria is :

 
 
 
 

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

 
 
 
 

814. Little leaf disease of Brinjal is caused by:

 
 
 
 

815. Special feature of pollen grains of Pinus is :

 
 
 
 

816. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

818. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

819. Bacteria growing on synthetic medium are called:

 
 
 
 

820. Water-borne bacterial diseases are:

 
 
 
 

821. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

829. The most important property of yeast is:

 
 
 
 

830. Discovery of penicillin was based on:

 
 
 
 

831. The fern plant is:

 
 
 
 

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

 
 
 
 

833. Which statement is wrong in regard to bacteria?

 
 
 
 

834. Protozoans are considered animals because these are:

 
 
 
 

835. Which of the following is a parasitic algae?

 
 
 
 

836. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

838. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. Pinus gerardiana is :

 
 
 
 

843. Most primitive embryophytes are placed in:

 
 
 
 

844. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

847. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

849. Fruits are not found in:

 
 
 
 

850. Mucilaginous canals in Cycas are found in :

 
 
 
 

851. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. In Cycas microsporangia are borne on:

 
 
 
 

858. Yeast grows more rapidly in:

 
 
 
 

859. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

861. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

863. Quarantine regulations are concerned with:

 
 
 
 

864. The fungi that grow on wood are called: