Quiz_Random

1. The Rhizopus is:

 
 
 
 

2. Which is a redwood tree?

 
 
 
 

3. In tracheophyta:

 
 
 
 

4. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

6. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Yeast is a source of:

 
 
 
 

10. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Yeast grows more rapidly in:

 
 
 
 

14. Protistan algae obtain their food as:

 
 
 
 

15. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

17. Green plants are classified as :

 
 
 
 

18. Lichens form the first community in

 
 
 
 

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

 
 
 
 

20. The lambda phase is a:

 
 
 
 

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

 
 
 
 

22. Mostly type of zygospore in Ulothrix is:

 
 
 
 

23. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

25. Fruiting body of lichens is :

 
 
 
 

26. What is special feature of fern archegonia?

 
 
 
 

27. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

29. Lichen show :

 
 
 
 

30. Coenogamete is found in:

 
 
 
 

31. Which is a tautonym?

 
 
 
 

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

 
 
 
 

33. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. What are plasmids?

 
 
 
 

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

 
 
 
 

40. Transfusion tissue is present in the leaflet of:

 
 
 
 

41. Club moss and Peat moss belong to:

 
 
 
 

42. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

44. Streptomycin is obtained from:

 
 
 
 

45. The gametophyte of fern is as:

 
 
 
 

46. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Lichens reproduce by :

 
 
 
 

53. Reproduction in Rhizopus is:

 
 
 
 

54. The lichens growing on rocks are called :

 
 
 
 

55. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

57. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

59. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

61. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. Pollination in Pinus is :

 
 
 
 

66.

67. Bacteria are found everywhere, except:

 
 
 
 

68. Which one of the following is a monocot?

 
 
 
 

69. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Aflatoxin is produced as a product in :

 
 
 
 

74. Botulinum toxin effects:

 
 
 
 

75. Lichens show :

 
 
 
 

76. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

78. The fungi are mostly:

 
 
 
 

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

 
 
 
 

80. In Selaginella, the microsporangia are:

 
 
 
 

81. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

83. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Longest known virus is:

 
 
 
 

91. Siphonogamy is found in:

 
 
 
 

92. Parmelia belongs to :

 
 
 
 

93. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

95. Seeds are characteristically found in :

 
 
 
 

96. Who named prion?

 
 
 
 

97. Majority of lichens are :

 
 
 
 

98. Quarantine regulations are concerned with:

 
 
 
 

99. Sexual reproduction in Rhizopus is by:

 
 
 
 

100. The vascular bundles of Cycas stem are :

 
 
 
 

101. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

103. Which organisms are the oldest life forms?

 
 
 
 

104. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

108. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. White rust of crucifers is caused by:

 
 
 
 

112. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

117. Red rot of sugarcane is caused by :

 
 
 
 

118. Most appropriate word for protozoans is:

 
 
 
 

119. The antherozoids of Funaria are :

 
 
 
 

120. Photosynthetic protists belong to:

 
 
 
 

121. Liverworts are included in :

 
 
 
 

122. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

124. Late blight of potato is caused by:

 
 
 
 

125. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

127. The sporangium of fern contains nearly:

 
 
 
 

128. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Leprosy is caused by:

 
 
 
 

132. Funaria is a Bryophyta because :

 
 
 
 

133. 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:

 
 
 
 

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

 
 
 
 

135. In binomial system most of the words are:

 
 
 
 

136. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Sexual reproduction of lichen is due to :

 
 
 
 

141. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

144. Botulism is a:

 
 
 
 

145. Black rust of wheat is caused by:

 
 
 
 

146. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

150. The largest known bacterium is:

 
 
 
 

151. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

153.

154. The source of litmus is :

 
 
 
 

155. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

157. Which among the following is a shrub?

 
 
 
 

158. LSD is:

 
 
 
 

159. The coralloid roots are :

 
 
 
 

160. The ascus of yeast contains:

 
 
 
 

161. Funaria is :

 
 
 
 

162. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

164. The sexual reproductive organs in Rhizopus are:

 
 
 
 

165. Helotism word is used for the symbiosis between :

 
 
 
 

166. The root nodules of leguminous plants contain:

 
 
 
 

167. Most primitive embryophytes are placed in:

 
 
 
 

168. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Nitrogen-fixing bacteria may be located:

 
 
 
 

172. 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:

 
 
 
 

173. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Citrus canker is caused by :

 
 
 
 

184. The zoospores of Ulothrix are :

 
 
 
 

185. Etiology includes the study of :

 
 
 
 

186. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Meiosis in Ulothrix takes place:

 
 
 
 

191. Oswald Tippo’s classification is:

 
 
 
 

192. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. Which statement is wrong in regard to bacteria?

 
 
 
 

200. Lichens reproduce by :

 
 
 
 

201. Antibiotics cure the disease by:

 
 
 
 

202. Embryophyta includes:

 
 
 
 

203. Halophiles are the bacteria that require for growth:

 
 
 
 

204. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. Iodine is obtained from :

 
 
 
 

210. Which is not found in bacteria?

 
 
 
 

211. Viruses are commonly transmitted in plants through:

 
 
 
 

212. Standard size of a herbarium sheet is:

 
 
 
 

213. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

215. Proembryo in Pinus is :

 
 
 
 

216. Fruits are not found in Cycas because:

 
 
 
 

217. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. Bacteria differ from viruses in being sensitive to:

 
 
 
 

225. In Pteris, the roots are:

 
 
 
 

226. Which is a fungicide?

 
 
 
 

227. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. Most of the algae are :

 
 
 
 

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

 
 
 
 

235. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

237. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

239. The central part of Funaria axis is :

 
 
 
 

240. What are Cyanobacteria?

 
 
 
 

241. The most primitive vascular plants is:

 
 
 
 

242. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

247. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

250. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

252. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

254. What is absent in Deuteromycetes?

 
 
 
 

255. Enteric bacteria are those bacteria that live:

 
 
 
 

256. Mycoplasma contains:

 
 
 
 

257. The seedless plants which possess vascular tissues are:

 
 
 
 

258. Anoxygenic photosynthesis occurs in:

 
 
 
 

259. The chief characteristic of bryophyta is that :

 
 
 
 

260. Germination of the seed of Pinus is :

 
 
 
 

261. The sporophyte of Riccia is represented by :

 
 
 
 

262. Spirogyra represents the :

 
 
 
 

263. Small epidermal swellings due to infection are called :

 
 
 
 

264. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

266. What is a vector?

 
 
 
 

267. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

269. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

271. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

273. The disease apple scab is caused by:

 
 
 
 

274. Soil fertility is lost by the activities of:

 
 
 
 

275. Black rust of wheat is caused by:

 
 
 
 

276. In a diplontic life cycle:

 
 
 
 

277. Cell walls of Gram-positive bacteria contain:

 
 
 
 

278. All algae have:

 
 
 
 

279. Lichens are ecologically important because :

 
 
 
 

280. Cyanophage is a virus that attacks:

 
 
 
 

281. Circular DNA is seen in:

 
 
 
 

282. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

293. Multicellular and jacketed sex organs are found in :

 
 
 
 

294. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

300. Ovary is absent in:

 
 
 
 

301. Clostridium can:

 
 
 
 

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

 
 
 
 

303. The sporophyte of Riccia is :

 
 
 
 

304. Cocci types of bacteria are:

 
 
 
 

305. Which bacteria convert nitrate into nitrogen?

 
 
 
 

306. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

308. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. Lichens are indicators of :

 
 
 
 

316. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

318. Mycoplasma is different from bacteria due to:

 
 
 
 

319. Which of the following is true for viruses?

 
 
 
 

320. Pasteur is famous for his:

 
 
 
 

321. The sporangia of Selaginella are attached:

 
 
 
 

322. Ergot of rye is caused by:

 
 
 
 

323. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

325. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

327. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Black rust of wheat is caused by:

 
 
 
 

331. The similarity between cyanobacteria and bacteria:

 
 
 
 

332. The gametophyte of fern bears:

 
 
 
 

333. Red rot of sugarcane is caused by:

 
 
 
 

334. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

341. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

343. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. The archegonia of Selaginella are differentiated by:

 
 
 
 

350. Most resistant spore in bacteria is:

 
 
 
 

351. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

353. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. The chief characteristic of class Ascomycetes is:

 
 
 
 

358. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. What is the role of nitrifying bacteria?

 
 
 
 

363. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

364. Protozoans are considered animals because these are:

 
 
 
 

365. Mucilaginous canals in Cycas are found in :

 
 
 
 

366. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

368. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

370. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

373. Some biologists have used the term Mycetozoa for:

 
 
 
 

374. Ovules are not found enclosed in ovary in :

 
 
 
 

375. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Which part of Riccia bears nurse cells?

 
 
 
 

379. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. Gymnosperms could also be called as:

 
 
 
 

383. Cycas plant in appearance resembles :

 
 
 
 

384. Cycas revoluta is widely grown as :

 
 
 
 

385. Kuru, a human disease is caused by:

 
 
 
 

386. Green plants are classified as:

 
 
 
 

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

 
 
 
 

388. Most primitive embryophytes are placed in :

 
 
 
 

389. Fruits are not found in:

 
 
 
 

390. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. The plants of Funaria grow :

 
 
 
 

394. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

395. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. In a bacteriophage, DNA is present in:

 
 
 
 

399. Select the wrong statement:

 
 
 
 

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

 
 
 
 

401. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. The fungi used as food are:

 
 
 
 

405. One of the distinctive feature of Spirogyra is :

 
 
 
 

406. Heterocysts are found in :

 
 
 
 

407. A gill of Agaricus:

 
 
 
 

408. Spermatophyta are characterized by producing:

 
 
 
 

409. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

411. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

413. Pollination in Cycas takes place by :

 
 
 
 

414. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

419. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. The leaf of Cycas shows:

 
 
 
 

424. Pteridophyta are also called:

 
 
 
 

425. Triple antigen injection or vaccine are for:

 
 
 
 

426. Pteridophytes are also known as :

 
 
 
 

427. Pasteurization of milk involves heating for:

 
 
 
 

428. Embryophyta includes :

 
 
 
 

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

 
 
 
 

430. In Gymnocarpeae the fruiting body is :

 
 
 
 

431. Sporophyte of fern is:

 
 
 
 

432. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

434. The upper region of moss capsule is :

 
 
 
 

435. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

439. 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?

 
 
 
 

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

 
 
 
 

441. Bentham and Hooker placed gymnosperms:

 
 
 
 

442. The tree fern is:

 
 
 
 

443. Virus and bacteriophage are made-up of:

 
 
 
 

444. Interferon is a:

 
 
 
 

445. Usually, bacteria reproduce by:

 
 
 
 

446. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

447. Which have the largest antherozoid?

 
 
 
 

448. Which is a gametophytic tissue?

 
 
 
 

449. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

450. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

452. The spermatozoids of Cycas are :

 
 
 
 

453. The microsporophylls on the cone of Cycas are :

 
 
 
 

454. Pollination drop is:

 
 
 
 

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

 
 
 
 

456. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. The fern plant is:

 
 
 
 

460. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

462. The disease symptom necrosis refers to :

 
 
 
 

463. The male gametes of Pinus are :

 
 
 
 

464. In Gymnosperms endosperm is a:

 
 
 
 

465. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

467. Facultative parasite is:

 
 
 
 

468. The alga, Spirogyra are found in :

 
 
 
 

469. Protists which are diploid reproduce sexually by:

 
 
 
 

470. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

472. The sori in Dryopteris are found on:

 
 
 
 

473. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. Choose the correct statement about Spirogyra:

 
 
 
 

480. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

491. Methanogens belong to:

 
 
 
 

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

 
 
 
 

493. Bryophyta have a special character from other plants:

 
 
 
 

494. Cleavage polyembryony is found in :

 
 
 
 

495. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

499. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

501.

 

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

 
 
 
 

503. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

505. Diphtheria is caused by:

 
 
 
 

506. All archaebacteria lack:

 
 
 
 

507. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Photoautotrophic bacteria have:

 
 
 
 

511. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Red rot of sugarcane is caused by :

 
 
 
 

515. An alga which is rich in proteins:

 
 
 
 

516. NBG of Lucknow is now named as:

 
 
 
 

517. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

519. John Hutchinson divided dicots into two divisions:

 
 
 
 

520. Lichens are pioneers of vegetation in a :

 
 
 
 

521. Placenta in fern is:

 
 
 
 

522. Linnaeus is credited with introducing:

 
 
 
 

523. Which causes red tide?

 
 
 
 

524. The antibiotic is obtained from:

 
 
 
 

525. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

527. Gram stain is used to:

 
 
 
 

528. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

532. Which is the nuclear material in bacteria?

 
 
 
 

533. Chemosynthetic bacteria are:

 
 
 
 

534. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. The teeth of peristome of Funaria are :

 
 
 
 

538. Which condition is found in Cycas?

 
 
 
 

539. Gametophyte is the main plant body in :

 
 
 
 

540. Photosynthetic bacteria have:

 
 
 
 

541. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

544. Azolla growing in paddy fields helps in:

 
 
 
 

545. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

549. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

551. Cyathia is characterized by:

 
 
 
 

552. Amoeba is a member of the phylum:

 
 
 
 

553. Economic importance of bacteria lies in their being:

 
 
 
 

554. Fern plants are:

 
 
 
 

555. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

557. Which is an exception to cell theory?

 
 
 
 

558. Bivalved siliceous shell or frustule occur in:

 
 
 
 

559. The nucleus of bacteria is:

 
 
 
 

560. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

565. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. The two conjugating gametangia of Rhizopus are:

 
 
 
 

569. Sometimes the bacterial cell is enclosed in:

 
 
 
 

570. The middle sterile part of capsule is called:

 
 
 
 

571. Roots are absent in :

 
 
 
 

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

 
 
 
 

573. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

575. The stele of Dryopteris is a:

 
 
 
 

576. 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?

 
 
 
 

577. Ovules are not found enclosed in ovary in :

 
 
 
 

578. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. Yeast belongs to class:

 
 
 
 

587. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. Which of the following is sago palm?

 
 
 
 

592. Select the wrong statement:

 
 
 
 

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

 
 
 
 

594. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. 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:

 
 
 
 

599. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

601. In Cycas:

 
 
 
 

602. Cap cells are found in the filament of:

 
 
 
 

603. How is moss different from fern?

 
 
 
 

604. Little leaf disease of Brinjal is caused by:

 
 
 
 

605. Vascular cryptogam is the term used for :

 
 
 
 

606. Which class of Protozoa includes all parasitic forms?

 
 
 
 

607. 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?

 
 
 
 

608. Sleeping sickness disease in man is caused by:

 
 
 
 

609. Pneumonia is caused by:

 
 
 
 

610. Where does meiosis occur in yeast?

 
 
 
 

611. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. Pinus is:

 
 
 
 

615. The spur of Pinus roxburghii has :

 
 
 
 

616. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

618. Indusium in Dryopteris is:

 
 
 
 

619. Fertility of the soil is increased by:

 
 
 
 

620. Rhizopus belongs to:

 
 
 
 

621. Mycoplasmas are not viruses in nature because:

 
 
 
 

622. The most important property of yeast is:

 
 
 
 

623. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

629. The group algae possesses representatives belonging to kingdom:

 
 
 
 

630. Bacteria are considered to be plants because they:

 
 
 
 

631. Bryophyta have been placed in cryptogams because:

 
 
 
 

632. Mycoplasma was discovered by:

 
 
 
 

633. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

639.

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

 
 
 
 

641. Fern phloem lacks:

 
 
 
 

642. Germ theory of disease was proposed by:

 
 
 
 

643. Saccharomyces is used in:

 
 
 
 

644. The prothallus of fern represents the plant:

 
 
 
 

645. Who among the following discovered virus?

 
 
 
 

646. Bacteria are placed under:

 
 
 
 

647. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. The gametophyte produced by apospory is :

 
 
 
 

651. Discovery of penicillin was based on:

 
 
 
 

652. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. The order generally ends with:

 
 
 
 

657. Typhoid in man is caused by:

 
 
 
 

658. Funaria is :

 
 
 
 

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

 
 
 
 

660. Ergot is obtained from :

 
 
 
 

661. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

669. Streptomyces falls under:

 
 
 
 

670. Ovary is absent in :

 
 
 
 

671. Asexual reproductive body of Volvox is called:

 
 
 
 

672. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

675. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

678. Chief constituents of bordeaux mixture are :

 
 
 
 

679. Acellular slime mold is/are:

 
 
 
 

680. Which fixes atmospheric nitrogen?

 
 
 
 

681. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

685. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

687. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

689. The sporangiophores in Rhizopus are:

 
 
 
 

690. Number of capsomeres forming capsid of TMV is:

 
 
 
 

691. Which of the following is a parasitic algae?

 
 
 
 

692. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Male gametes in Dryopteris are:

 
 
 
 

696. The DNA of E coli is:

 
 
 
 

697. Absorptive nutrition is:

 
 
 
 

698. Select the correct statement: (NEET 2016)

 
 
 
 

699. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. In Cycas the fertilization is:

 
 
 
 

703. Psilotum is:

 
 
 
 

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

 
 
 
 

705. Ulothrix produces :

 
 
 
 

706. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

708. 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:

 
 
 
 

709. 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?

 
 
 
 

710. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

713. The roots of Cycas are :

 
 
 
 

714. Funaria can be differentiated from Cycas :

 
 
 
 

715. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. Banana bunchy top is caused by :

 
 
 
 

719. Diploxylic vascular bundles are found in:

 
 
 
 

720. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. The fungi that grow on wood are called:

 
 
 
 

725. Facultative saprophyte is:

 
 
 
 

726. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

727. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. What is mycorrhiza?

 
 
 
 

731. Mixed cropping helps :

 
 
 
 

732. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

735. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. Pseudomycelium is found in:

 
 
 
 

739. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

743. Winged pollen grains are found in :

 
 
 
 

744. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

747. Enzymes are absent in:

 
 
 
 

748. Viroids have:

 
 
 
 

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

 
 
 
 

750. Agar-agar is obtained from:

 
 
 
 

751. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

753. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

755. All protozoans possess:

 
 
 
 

756. Pythium debaryanum is the causative agent of:

 
 
 
 

757. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

759. Rice, pea, potato are :

 
 
 
 

760. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

763. The smallest bacterium is:

 
 
 
 

764. Which is an edible fungus?

 
 
 
 

765. The development of Selaginella embryo is:

 
 
 
 

766. Vascular tissue is found in :

 
 
 
 

767. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Which of the following are absent in Mycoplasma?

 
 
 
 

776. Broad spectrum antibiotic is, which:

 
 
 
 

777. Cycas is:

 
 
 
 

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

 
 
 
 

779. Citrus canker is caused by:

 
 
 
 

780. Bacteria which are spherical are called:

 
 
 
 

781. The truncated cone of HIV consists of:

 
 
 
 

782. Iodine is obtained from:

 
 
 
 

783. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

785. What is streptomycin?

 
 
 
 

786. Rhizopus and yeast are usually:

 
 
 
 

787. In Cycas which structure is equivalent to stamen?

 
 
 
 

788. Cycas is different from mango in :

 
 
 
 

789. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

791. The term stele was given by:

 
 
 
 

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

 
 
 
 

793. Virion refers to:

 
 
 
 

794. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

796. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. Spirogyra differs from moss protonema in having :

 
 
 
 

800. The rhizoids of Funaria are :

 
 
 
 

801. Some diseases caused by bacteria are:

 
 
 
 

802. The fungi are usually:

 
 
 
 

803. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

806. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Which group of algae have an incipient nucleus?

 
 
 
 

812. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. Cycas is :

 
 
 
 

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

 
 
 
 

819. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

821. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

823. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

827. Which of the following shows heterotrichous habit?

 
 
 
 

828. Plasmids are:

 
 
 
 

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

 
 
 
 

830. Smut of maize is caused by :

 
 
 
 

831. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Nitrifying bacteria play an important role by converting:

 
 
 
 

836. Metulae are found in:

 
 
 
 

837. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

844. Which of the following are included in Tracheophyta?

 
 
 
 

845. Heterosporous pteridophytes always form:

 
 
 
 

846. Infective part of virus was discovered by:

 
 
 
 

847. Oswald Tippo’s classification was based on :

 
 
 
 

848. The ferns are usually found:

 
 
 
 

849. The development of sporangium in Selaginella is:

 
 
 
 

850. Wine turns sour because of:

 
 
 
 

851. Vegetative reproduction in Cycas is by means of :

 
 
 
 

852. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Generic name of mango is:

 
 
 
 

856. The orders generally have the uniform endings:

 
 
 
 

857. Endemic plants are characterised by their:

 
 
 
 

858. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Centric discoid form of diatom is: