Quiz_Random

1. The disease apple scab is caused by:

 
 
 
 

2. Bacteriophage consists of:

 
 
 
 

3. The phloem of vascular system of Cycas is :

 
 
 
 

4. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

6. Absorptive nutrition is:

 
 
 
 

7. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

9. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

14. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

16. 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:

 
 
 
 

17. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

19. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. Chief constituents of bordeaux mixture are :

 
 
 
 

24. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

26. Mycoplasma are:

 
 
 
 

27. Citrus canker is caused by :

 
 
 
 

28. Rhizophore of Selaginella is:

 
 
 
 

29. Black rust of wheat is caused by:

 
 
 
 

30. LSD is:

 
 
 
 

31. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. The first to isolate a plant virus was:

 
 
 
 

38. 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?

 
 
 
 

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

 
 
 
 

40. The fungi are mostly:

 
 
 
 

41. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

43. Liverworts are included in :

 
 
 
 

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

 
 
 
 

45. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

47. The gametophyte of fern bears:

 
 
 
 

48. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Pollination in Cycas takes place by :

 
 
 
 

52. Photosynthetic protists belong to:

 
 
 
 

53. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

55. Pasteurized milk is:

 
 
 
 

56. The disease symptom necrosis refers to :

 
 
 
 

57. Winged seeds are found in :

 
 
 
 

58. Yeast grows more rapidly in:

 
 
 
 

59. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Bacteria are found everywhere, except:

 
 
 
 

63. Genetic material of TMV is:

 
 
 
 

64. Enzymes are absent in:

 
 
 
 

65. Spores of which plants have chloroplast:

 
 
 
 

66. Who among the following discovered virus?

 
 
 
 

67. Which is a redwood tree?

 
 
 
 

68. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

70. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

72. In Cycas which structure is equivalent to stamen?

 
 
 
 

73. All algae have:

 
 
 
 

74. Green plants are classified as :

 
 
 
 

75. The orders generally have the uniform endings:

 
 
 
 

76. Which is a tautonym?

 
 
 
 

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

 
 
 
 

78. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

79. Green plants are classified as:

 
 
 
 

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

 
 
 
 

81. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Circular DNA is seen in:

 
 
 
 

87. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

89. Which of the following lichens is harmful?

 
 
 
 

90. The alga, Spirogyra are found in :

 
 
 
 

91. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

93. The lichens growing on rocks are called :

 
 
 
 

94. Gymnosperms could also be called as:

 
 
 
 

95. Gram stain is used to:

 
 
 
 

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

 
 
 
 

97. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

102. Which is the nuclear material in bacteria?

 
 
 
 

103. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

105. Germ theory of disease was proposed by:

 
 
 
 

106. Simple polyembryony is found in :

 
 
 
 

107. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

110. Pinus is:

 
 
 
 

111. Azolla growing in paddy fields helps in:

 
 
 
 

112. The leaf of Cycas shows:

 
 
 
 

113. Among the algae kelps are :

 
 
 
 

114. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

116. Banana bunchy top is caused by :

 
 
 
 

117. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

125. Usually, bacteria reproduce by:

 
 
 
 

126. Some diseases caused by bacteria are:

 
 
 
 

127. A gill of Agaricus:

 
 
 
 

128. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Leprosy is caused by:

 
 
 
 

132. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

134. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

140. Which statement is wrong in regard to bacteria?

 
 
 
 

141. Cycas plant in appearance resembles :

 
 
 
 

142. Facultative saprophyte is:

 
 
 
 

143. The sori in Dryopteris are found on:

 
 
 
 

144. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

145. The chloroplast of Chlamydomonas are:

 
 
 
 

146. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

148. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. What is the role of nitrifying bacteria?

 
 
 
 

155. Coenogamete is found in:

 
 
 
 

156. The microsporophylls on the cone of Cycas are :

 
 
 
 

157. Mycoplasma are sensitive to:

 
 
 
 

158. Ergot is obtained from :

 
 
 
 

159. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

161. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Early blight of potato is caused by:

 
 
 
 

168. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

173. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

175. The seedless plants which possess vascular tissues are:

 
 
 
 

176. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

178. The tallest moss in the world is :

 
 
 
 

179. E coli is a:

 
 
 
 

180. Ovary is absent in :

 
 
 
 

181. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

183. In a bacteriophage, DNA is present in:

 
 
 
 

184. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

189. The truncated cone of HIV consists of:

 
 
 
 

190. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

192. Virion refers to:

 
 
 
 

193. Little leaf disease of Brinjal is caused by:

 
 
 
 

194. Fern prothallus is:

 
 
 
 

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

 
 
 
 

196. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. How is moss different from fern?

 
 
 
 

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

 
 
 
 

202. Pteridophyta are also called:

 
 
 
 

203. Fern plants are:

 
 
 
 

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

 
 
 
 

205. Yeast is a source of:

 
 
 
 

206. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

209. 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:

 
 
 
 

210. Which of the following statement is correct?

 
 
 
 

211. All protozoans possess:

 
 
 
 

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

 
 
 
 

213. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. Lichen show :

 
 
 
 

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

 
 
 
 

218. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

219. Which of the following is a heterosporous pteridophyte?

 
 
 
 

220. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

222. Why is Cycas called a living fossil?

 
 
 
 

223. The sporophyte of Riccia is :

 
 
 
 

224. NBG of Lucknow is now named as:

 
 
 
 

225. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

228. Pseudomycelium is found in:

 
 
 
 

229. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

234. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. The male gametes of Pinus are :

 
 
 
 

240. Lichens are indicators of :

 
 
 
 

241. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

244. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

246. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

248. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

250.

 

251. Fertility of the soil is increased by:

 
 
 
 

252. Standard size of a herbarium sheet is:

 
 
 
 

253. Azolla and Salvinia both are:

 
 
 
 

254. The prothallus of fern represents the plant:

 
 
 
 

255. Oswald Tippo’s classification was based on :

 
 
 
 

256. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. The teeth of peristome of Funaria are :

 
 
 
 

260. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

262. Lichens show :

 
 
 
 

263. Pythium debaryanum is the causative agent of:

 
 
 
 

264. Which of the following is true for Selaginella?

 
 
 
 

265. Some biologists have used the term Mycetozoa for:

 
 
 
 

266. Winged pollen grains are found in :

 
 
 
 

267. Bivalved siliceous shell or frustule occur in:

 
 
 
 

268. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

270. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

275. Pinus gerardiana is :

 
 
 
 

276. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

278. Red rot of sugarcane is caused by:

 
 
 
 

279. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

281. The largest known bacterium is:

 
 
 
 

282. Metulae are found in:

 
 
 
 

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

 
 
 
 

284. The source of litmus is :

 
 
 
 

285. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

288. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Isomorphic type alternation of generation is found in:

 
 
 
 

292. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

294. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

302. The roots of Cycas are :

 
 
 
 

303. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

305. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Embryo formation is not known in :

 
 
 
 

310. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

311. The largest alga is:

 
 
 
 

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

 
 
 
 

313. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

315. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

317. Which bacteria convert nitrate into nitrogen?

 
 
 
 

318. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

320. What are plasmids?

 
 
 
 

321. Who discovered cyanophages?

 
 
 
 

322. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

324. Each chloroplast in Spirogyra bears :

 
 
 
 

325. Ethylene oxide is widely used to:

 
 
 
 

326. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

328. Rhizoids of Riccia are :

 
 
 
 

329. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

333. The genetic material of poxvirus is:

 
 
 
 

334. Yeast belongs to class:

 
 
 
 

335. What are Cyanobacteria?

 
 
 
 

336. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

337. 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:

 
 
 
 

338. Meiosis in Ulothrix takes place:

 
 
 
 

339. Which is a fungicide?

 
 
 
 

340. Which of the following are included in Tracheophyta?

 
 
 
 

341. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

343. The fungi are usually:

 
 
 
 

344. True sexuality is not found in:

 
 
 
 

345. Water-net is the name of:

 
 
 
 

346. Ovary is absent in:

 
 
 
 

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

 
 
 
 

348. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

352. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

354. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. The term stele was given by:

 
 
 
 

361. Rice, pea, potato are :

 
 
 
 

362. The fungi used as food are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Vegetative reproduction in Cycas is by means of :

 
 
 
 

366. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

368. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Roots are absent in :

 
 
 
 

372. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

377. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

379. Most primitive embryophytes are placed in :

 
 
 
 

380. 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:

 
 
 
 

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

 
 
 
 

382. Which of the following are absent in Mycoplasma?

 
 
 
 

383. The coralloid roots are :

 
 
 
 

384. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. In Gymnosperms endosperm is a:

 
 
 
 

390. Transfusion tissue is present in the leaflet of:

 
 
 
 

391. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

393.

394. Tautonyms are illegitimate in:

 
 
 
 

395. The chloroplast in Ulothrix is :

 
 
 
 

396.

397. Centric discoid form of diatom is:

 
 
 
 

398. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

401. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

403. Sleeping sickness disease in man is caused by:

 
 
 
 

404. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. In Funaria, calyptra is derived from :

 
 
 
 

409. Which one of the following statement is wrong?

 
 
 
 

410. Most primitive group of vascular plants are:

 
 
 
 

411. Funaria is a Bryophyta because :

 
 
 
 

412. The most important property of yeast is:

 
 
 
 

413. Which of the following shows heterotrichous habit?

 
 
 
 

414. The order generally ends with:

 
 
 
 

415. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

420. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. Halophiles are the bacteria that require for growth:

 
 
 
 

424. Which causes red tide?

 
 
 
 

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

 
 
 
 

426. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. Cycas is similar to a mustard plant :

 
 
 
 

437. Chemosynthetic bacteria are:

 
 
 
 

438. The ferns are usually found:

 
 
 
 

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

 
 
 
 

440. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

442. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

444. Photosynthetic bacteria have:

 
 
 
 

445. Saccharomyces is well known for:

 
 
 
 

446. Which among the following is a shrub?

 
 
 
 

447. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

451. The fern plant is:

 
 
 
 

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

 
 
 
 

453. Which one of the following is a monocot?

 
 
 
 

454. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

456. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

458. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

460. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

462. Iodine is obtained from :

 
 
 
 

463. Diphtheria is caused by:

 
 
 
 

464. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

466. Lichens are the indicator of pollution :

 
 
 
 

467. Which is an exception to cell theory?

 
 
 
 

468. The gametophyte of fern is as:

 
 
 
 

469. Psilotum is:

 
 
 
 

470. The sporangium of fern contains nearly:

 
 
 
 

471. In moss, sporophyte is formed on:

 
 
 
 

472. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

485. Majority of lichens are :

 
 
 
 

486. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

488. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

490. Mostly type of zygospore in Ulothrix is:

 
 
 
 

491. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

493. The mode of nutrition of bacteria is usually:

 
 
 
 

494. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. To which country Antony van Leeuwenhoek belong?

 
 
 
 

499. Lichens form the first community in

 
 
 
 

500. Endemic plants are characterised by their:

 
 
 
 

501. Total parasites belong to:

 
 
 
 

502. Pollination drop is:

 
 
 
 

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

 
 
 
 

504. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

506. Mycoplasmas are not viruses in nature because:

 
 
 
 

507. Helotism word is used for the symbiosis between :

 
 
 
 

508. Choose the correct statement about Spirogyra:

 
 
 
 

509. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Select the wrong statement:

 
 
 
 

514. Which group of algae have an incipient nucleus?

 
 
 
 

515. Reserve food in Euglena is:

 
 
 
 

516. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

518. Most resistant spore in bacteria is:

 
 
 
 

519. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

521. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

529. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

531. Late blight of potato is caused by:

 
 
 
 

532. Nannandria are:

 
 
 
 

533. The sexual reproductive organs in Rhizopus are:

 
 
 
 

534. An alga which is rich in proteins:

 
 
 
 

535. Bacteriophages have been used as:

 
 
 
 

536. Ulothrix produces :

 
 
 
 

537. Quarantine regulations are concerned with:

 
 
 
 

538. Which is an edible fungus?

 
 
 
 

539. The development of Selaginella embryo is:

 
 
 
 

540. Etiology includes the study of :

 
 
 
 

541. Plasmids are:

 
 
 
 

542. Reproduction in Cycas takes place by :

 
 
 
 

543. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

545. The antibiotic is obtained from:

 
 
 
 

546. Diploxylic vascular bundles are found in:

 
 
 
 

547. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

550. Cycas revoluta is widely grown as :

 
 
 
 

551. The sporangiophores in Rhizopus are:

 
 
 
 

552. The middle sterile part of capsule is called:

 
 
 
 

553. Which condition is found in Cycas?

 
 
 
 

554. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

556. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

559. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Linnaeus is credited with introducing:

 
 
 
 

564. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

569. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

571. Number of capsomeres forming capsid of TMV is:

 
 
 
 

572. Broad spectrum antibiotic is, which:

 
 
 
 

573. In binomial system most of the words are:

 
 
 
 

574. Which of the following applies to Selaginella?

 
 
 
 

575. Club moss and Peat moss belong to:

 
 
 
 

576. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

578. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

580. Red rot of sugarcane is caused by :

 
 
 
 

581. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

583. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. Parmelia belongs to :

 
 
 
 

587. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. What is a vector?

 
 
 
 

592. The leaves of Funaria are :

 
 
 
 

593. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

595. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

597. Viruses are commonly transmitted in plants through:

 
 
 
 

598. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

599. The chromosomal number in:

 
 
 
 

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

 
 
 
 

601. Ovules are not found enclosed in ovary in :

 
 
 
 

602. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

603. Amoeba is a member of the phylum:

 
 
 
 

604. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Most of the algae are :

 
 
 
 

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

 
 
 
 

611. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

613. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

615. Special feature of pollen grains of Pinus is :

 
 
 
 

616. Funaria is :

 
 
 
 

617. Cycas is :

 
 
 
 

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

 
 
 
 

619. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

623. Discovery of penicillin was based on:

 
 
 
 

624. Saccharomyces is used in:

 
 
 
 

625. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. . Tapetum develops in:

 
 
 
 

630. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

631. In Cycas:

 
 
 
 

632. Rhizopus belongs to:

 
 
 
 

633. Spermatophyta are characterized by producing:

 
 
 
 

634. Seeds are characteristically found in:

 
 
 
 

635. Disease resistant plant varieties can be produced by :

 
 
 
 

636. Ovules are not found enclosed in ovary of:

 
 
 
 

637. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

645. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

647. Acellular slime mold is/are:

 
 
 
 

648. Interferon is a:

 
 
 
 

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

 
 
 
 

650. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

652. Cryptogams include :

 
 
 
 

653. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

655. The leaves of Funaria are :

 
 
 
 

656. Which is not found in bacteria?

 
 
 
 

657. The archegonia in Selaginella develop on:

 
 
 
 

658. Bacteria growing on synthetic medium are called:

 
 
 
 

659. Ergot of rye is caused by:

 
 
 
 

660. Which of the following is a parasitic algae?

 
 
 
 

661. Spermatophyta are characterized by producing:

 
 
 
 

662. Rhizopus and yeast are usually:

 
 
 
 

663. In moss, calyptra is formed from:

 
 
 
 

664. Synzoospore is produced in:

 
 
 
 

665. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

667. Photoautotrophic bacteria have:

 
 
 
 

668. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

670. Redness of red sea is due to :

 
 
 
 

671. Which of the following have algal zone?

 
 
 
 

672. Select the wrong statement:

 
 
 
 

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

 
 
 
 

674. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

676. The smallest unit of classification is:

 
 
 
 

677. The role of meiosis is for:

 
 
 
 

678. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

684. Seeds are characteristically found in :

 
 
 
 

685. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Late blight of potato is caused by :

 
 
 
 

689. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

698. Black rust of wheat is caused by:

 
 
 
 

699. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

701. Who discovered heterothallism in fungi?

 
 
 
 

702. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Funaria is :

 
 
 
 

707. Acetobacter is useful in:

 
 
 
 

708. In Cycas microsporangia are borne on:

 
 
 
 

709. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

711. Meristele of fern is:

 
 
 
 

712. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Generic name of mango is:

 
 
 
 

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

 
 
 
 

718. Methanogens belong to:

 
 
 
 

719. Downy mildew disease is caused by :

 
 
 
 

720. Reproduction in Rhizopus is:

 
 
 
 

721. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

725. Gametophyte is the main plant body in :

 
 
 
 

726. Germination of the seed of Pinus is :

 
 
 
 

727. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Mixed cropping helps :

 
 
 
 

732. Embryophyta includes :

 
 
 
 

733. Bentham and Hooker placed gymnosperms:

 
 
 
 

734. Penicillin was discovered by:

 
 
 
 

735. Ectocarpus produces:

 
 
 
 

736. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Embryophyta includes:

 
 
 
 

741. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. First animal pathogenic virus was discovered by:

 
 
 
 

746. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

751. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

753. In Pteris, the roots are:

 
 
 
 

754. Lichens reproduce by :

 
 
 
 

755. Sporophyte of fern is:

 
 
 
 

756. Spirogyra represents the :

 
 
 
 

757. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

759. One of the distinctive feature of Spirogyra is :

 
 
 
 

760. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

762. Viruses have:

 
 
 
 

763. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

765. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

767. 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?

 
 
 
 

768. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

770. The DNA of E coli is:

 
 
 
 

771. Who named prion?

 
 
 
 

772. The gametophyte produced by apospory is :

 
 
 
 

773. Leaf spot of groundnut is caused by :

 
 
 
 

774. The ascus of yeast contains:

 
 
 
 

775. Bacteria are considered to be plants because they:

 
 
 
 

776. Polystelic condition is found in:

 
 
 
 

777. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

778. Bacteria which are spherical are called:

 
 
 
 

779. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

781. Facultative parasite is:

 
 
 
 

782. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

784. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

786. Most of the lichens are composed of :

 
 
 
 

787. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

789. The archegonia of Selaginella are differentiated by:

 
 
 
 

790. Pollination in Pinus is :

 
 
 
 

791. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

793. Placenta in fern is:

 
 
 
 

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

 
 
 
 

795. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

797. Which of the following is true for viruses?

 
 
 
 

798. The rhizoids of Funaria are :

 
 
 
 

799. Cycas is:

 
 
 
 

800. 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?

 
 
 
 

801. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

806. The Rhizopus is:

 
 
 
 

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

 
 
 
 

808. Which fixes atmospheric nitrogen?

 
 
 
 

809. Fruits are not found in Cycas because:

 
 
 
 

810. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

812. Soil fertility is lost by the activities of:

 
 
 
 

813. Fruits are not found in:

 
 
 
 

814. Agar-agar is obtained from:

 
 
 
 

815. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

817. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820.

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

 
 
 
 

822. Bryophyta have a special character from other plants:

 
 
 
 

823. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

825. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

827. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

829. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

831. Siphonogamy is found in:

 
 
 
 

832. The sporophyte of Riccia is represented by :

 
 
 
 

833. The group algae possesses representatives belonging to kingdom:

 
 
 
 

834. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

836. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

838. The spermatozoids of Cycas are :

 
 
 
 

839. Nitrifying bacteria play an important role by converting:

 
 
 
 

840. Indusium in Dryopteris is:

 
 
 
 

841. Cyanophage is a virus that attacks:

 
 
 
 

842. Cycas is different from mango in :

 
 
 
 

843. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

847. Which is not true for Escherichia coli?

 
 
 
 

848. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. Small epidermal swellings due to infection are called :

 
 
 
 

856. Heterosporous pteridophytes always form:

 
 
 
 

857. Where does meiosis occur in yeast?

 
 
 
 

858. The zygospore in Rhizopus on germination forms:

 
 
 
 

859. In Funaria :

 
 
 
 

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

 
 
 
 

861. Mucilaginous canals in Cycas are found in :

 
 
 
 

862. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

864. Most primitive kind of flower is represented by: