Quiz_Random

1. The central part of Funaria axis is :

 
 
 
 

2. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

4. Plasmids are:

 
 
 
 

5. Lichen show :

 
 
 
 

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

 
 
 
 

7. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

9. Sexual reproduction of lichen is due to :

 
 
 
 

10. Generic name of mango is:

 
 
 
 

11. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

19. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. The most primitive vascular plants is:

 
 
 
 

23. In Herpes virus DNA is:

 
 
 
 

24. Maximum diversity of life forms occurs in :

 
 
 
 

25. 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:

 
 
 
 

26. The truncated cone of HIV consists of:

 
 
 
 

27. Embryophyta includes :

 
 
 
 

28. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

30. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

32. Cycas is different from mango in :

 
 
 
 

33. The chief characteristic of bryophyta is that :

 
 
 
 

34. Roots are absent in :

 
 
 
 

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

 
 
 
 

36. Bacteriophages have been used as:

 
 
 
 

37. Number of capsomeres forming capsid of TMV is:

 
 
 
 

38. In tracheophyta:

 
 
 
 

39. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

47. Which is a gametophytic tissue?

 
 
 
 

48. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

50. Rhizopus belongs to:

 
 
 
 

51. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

52. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

54. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

56. Cycas plant in appearance resembles :

 
 
 
 

57. Quarantine regulations are concerned with:

 
 
 
 

58. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

60. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

62. Green plants are classified as:

 
 
 
 

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

 
 
 
 

64. Fern plants are:

 
 
 
 

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

 
 
 
 

66. The leaf of Cycas shows:

 
 
 
 

67. The rhizoids of Funaria are :

 
 
 
 

68. The sporangiophores in Rhizopus are:

 
 
 
 

69. The lambda phase is a:

 
 
 
 

70. Penicillin is obtained from:

 
 
 
 

71. Mycoplasma are sensitive to:

 
 
 
 

72. Lichens are the indicator of pollution :

 
 
 
 

73. Which is a fungicide?

 
 
 
 

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

 
 
 
 

75. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

76. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

78. In Funaria :

 
 
 
 

79. The sporangium of fern contains nearly:

 
 
 
 

80. Funaria is :

 
 
 
 

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

 
 
 
 

82. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

84. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

89. Viruses are considered to be:

 
 
 
 

90. The ferns are usually found:

 
 
 
 

91. What is a vector?

 
 
 
 

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

 
 
 
 

93. Standard size of a herbarium sheet is:

 
 
 
 

94. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

96. Diploxylic vascular bundles are found in:

 
 
 
 

97. . Tapetum develops in:

 
 
 
 

98. Which of the following have a prokaryotic cell?

 
 
 
 

99. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

101. Lichens are indicators of :

 
 
 
 

102. Lichens show :

 
 
 
 

103. Some bacteria cannot be killed easily because of:

 
 
 
 

104. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

106. Which of the following statement is correct?

 
 
 
 

107. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

109. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

111. In moss, calyptra is formed from:

 
 
 
 

112. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. Meiosis in Ulothrix takes place:

 
 
 
 

118. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Which condition is found in Cycas?

 
 
 
 

125. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

126. Red rot of sugarcane is caused by :

 
 
 
 

127. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

129. Which of the following are included in Tracheophyta?

 
 
 
 

130. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

132.

133. The upper region of moss capsule is :

 
 
 
 

134. Leaf spot of groundnut is caused by :

 
 
 
 

135. Pinus gerardiana is :

 
 
 
 

136. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

138. Who discovered heterothallism in fungi?

 
 
 
 

139. Mycoplasma contains:

 
 
 
 

140. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Discovery of penicillin was based on:

 
 
 
 

150. The first to isolate a plant virus was:

 
 
 
 

151. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

157. What is special feature of fern archegonia?

 
 
 
 

158. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

161. Pteridophytes are also known as :

 
 
 
 

162. To which class Riccia belongs :

 
 
 
 

163. Lichens reproduce by :

 
 
 
 

164. Facultative saprophyte is:

 
 
 
 

165. Nannandria are:

 
 
 
 

166. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

168. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

170. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Germination of the seed of Pinus is :

 
 
 
 

174. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Agar-agar is obtained from:

 
 
 
 

178. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. Mycoplasma are:

 
 
 
 

182. Mucilaginous canals in Cycas are found in :

 
 
 
 

183. Which bacteria convert nitrate into nitrogen?

 
 
 
 

184. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. The sporophyte of Riccia is represented by :

 
 
 
 

189. Sporophyte of fern is:

 
 
 
 

190. Bacteria are considered to be plants because they:

 
 
 
 

191. The two conjugating gametangia of Rhizopus are:

 
 
 
 

192. The antherozoids of Funaria are :

 
 
 
 

193. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

199. 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:

 
 
 
 

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

 
 
 
 

201. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

203. Fern prothallus produces:

 
 
 
 

204. The fungi used as food are:

 
 
 
 

205. The development of sporangium in Selaginella is:

 
 
 
 

206. Which among the following is a shrub?

 
 
 
 

207. Botulinum toxin effects:

 
 
 
 

208. Ulothrix produces :

 
 
 
 

209. Sexual reproduction in Rhizopus is by:

 
 
 
 

210. Fern prothallus is:

 
 
 
 

211. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Which lichen is called Reindeer moss?

 
 
 
 

216. Spores of which plants have chloroplast:

 
 
 
 

217. Banana bunchy top is caused by :

 
 
 
 

218. Pneumonia is caused by:

 
 
 
 

219. One of the distinctive feature of Spirogyra is :

 
 
 
 

220. Photosynthetic bacteria have:

 
 
 
 

221. Water-borne bacterial diseases are:

 
 
 
 

222. Fruits are not found in:

 
 
 
 

223. In moss, sporogenous tissue arises from:

 
 
 
 

224. Some diseases caused by bacteria are:

 
 
 
 

225. Citrus canker is caused by:

 
 
 
 

226. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

228. Chemosynthetic bacteria are:

 
 
 
 

229. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. Among the algae kelps are :

 
 
 
 

233. In moss, stomata are found:

 
 
 
 

234. In Selaginella, the microsporangia are:

 
 
 
 

235. Infective part of virus was discovered by:

 
 
 
 

236. Downy mildew disease is caused by :

 
 
 
 

237. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

239. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

241. The coralloid roots are :

 
 
 
 

242. Germ theory of disease was proposed by:

 
 
 
 

243. The ascus of yeast contains:

 
 
 
 

244. Mycoplasmas are not viruses in nature because:

 
 
 
 

245. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

249. In moss, reduction division occurs in :

 
 
 
 

250. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

252. Which is a tautonym?

 
 
 
 

253. The fungi are usually:

 
 
 
 

254. Winged seeds are found in :

 
 
 
 

255. Who named prion?

 
 
 
 

256. The gametophyte of moss has distinct phases :

 
 
 
 

257. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. The antibiotic is obtained from:

 
 
 
 

263. The roots of Cycas are :

 
 
 
 

264. Which causes red tide?

 
 
 
 

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

 
 
 
 

266. Which is an edible fungus?

 
 
 
 

267. Reserve food in Euglena is:

 
 
 
 

268. Majority of lichens are :

 
 
 
 

269. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. Typhoid in man is caused by:

 
 
 
 

273. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

281. Fruits are not found in :

 
 
 
 

282. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. Saccharomyces is used in:

 
 
 
 

291. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

296. The seedless plants which possess vascular tissues are:

 
 
 
 

297. Isomorphic type alternation of generation is found in:

 
 
 
 

298. Cryptogams include :

 
 
 
 

299. Male gametophyte of Selaginella is found:

 
 
 
 

300. Vegetative reproduction in Cycas is by means of :

 
 
 
 

301. Longest known virus is:

 
 
 
 

302. Which is not true for Escherichia coli?

 
 
 
 

303. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

305. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

307. True sexuality is not found in:

 
 
 
 

308. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Interferon is a:

 
 
 
 

318. Rhizopus and yeast are usually:

 
 
 
 

319. Cycas revoluta is widely grown as :

 
 
 
 

320. Mycoplasma was discovered by:

 
 
 
 

321. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Most common type of conjugation in Spirogyra is :

 
 
 
 

326. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

331. Black rust of wheat is caused by:

 
 
 
 

332. Protistan algae obtain their food as:

 
 
 
 

333. Halophiles are the bacteria that require for growth:

 
 
 
 

334. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

337. The chloroplast in Ulothrix is :

 
 
 
 

338. The gametophyte of fern bears:

 
 
 
 

339. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Zoogametes are not found in:

 
 
 
 

349. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

351. What is the role of nitrifying bacteria?

 
 
 
 

352. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

358. The stele of Dryopteris is a:

 
 
 
 

359. Cyathia is characterized by:

 
 
 
 

360. The fungi that grow on wood are called:

 
 
 
 

361. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Kuru, a human disease is caused by:

 
 
 
 

366. The gametophyte produced by apospory is :

 
 
 
 

367. Heterospory and ligulate leaves are a feature of:

 
 
 
 

368. Cycas is:

 
 
 
 

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

 
 
 
 

370. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

372. The microsporophylls on the cone of Cycas are :

 
 
 
 

373. Proembryo in Pinus is :

 
 
 
 

374. The mycelium of Rhizopus is:

 
 
 
 

375. In moss, peristomial teeth are:

 
 
 
 

376. Bacteria differ from viruses in being sensitive to:

 
 
 
 

377. Funaria are commonly found :

 
 
 
 

378. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

380. Seeds are characteristically found in :

 
 
 
 

381. Ovules are not found enclosed in ovary in :

 
 
 
 

382. The vascular bundles of Cycas stem are :

 
 
 
 

383. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

387. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

392. Which of the following is true for viruses?

 
 
 
 

393. The orders generally have the uniform endings:

 
 
 
 

394. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

399. Enteric bacteria are those bacteria that live:

 
 
 
 

400. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

402. How is moss different from fern?

 
 
 
 

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

 
 
 
 

404. In moss, sporophyte is formed on:

 
 
 
 

405. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

408. Bacteria were first discovered by:

 
 
 
 

409. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

410. The smallest unit of classification is:

 
 
 
 

411. Genetic material of TMV is:

 
 
 
 

412. Detailed study of bacteriophage was made by:

 
 
 
 

413. Select the wrong statement:

 
 
 
 

414. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

423. Select the correct statement: (NEET 2016)

 
 
 
 

424. Black rust of wheat is caused by:

 
 
 
 

425. Diphtheria is caused by:

 
 
 
 

426. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. In angiosperms double fertilization represents:

 
 
 
 

437. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. All algae have:

 
 
 
 

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

 
 
 
 

446. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

451. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

453.

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

 
 
 
 

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

 
 
 
 

456. Psilotum is:

 
 
 
 

457. The flagella of Chlamydomonas are:

 
 
 
 

458. Metulae are found in:

 
 
 
 

459. Vascular tissue is found in :

 
 
 
 

460. 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:

 
 
 
 

461. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

463. Little leaf disease of Brinjal is caused by:

 
 
 
 

464. Most primitive embryophytes are placed in:

 
 
 
 

465. Red rot of sugarcane is caused by :

 
 
 
 

466. Nitrifying bacteria play an important role by converting:

 
 
 
 

467. Funaria is a Bryophyta because :

 
 
 
 

468. Antibiotics cure the disease by:

 
 
 
 

469. Pasteur is famous for his:

 
 
 
 

470. Transfusion tissue is present in the leaflet of:

 
 
 
 

471. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Synzoospore is produced in:

 
 
 
 

475. The order generally ends with:

 
 
 
 

476. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. Bentham and Hooker placed gymnosperms:

 
 
 
 

480. Which part of Riccia bears nurse cells?

 
 
 
 

481. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

483. Lichens are ecologically important because :

 
 
 
 

484. Select the wrong statement:

 
 
 
 

485. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. Which is the correct statement about Selaginella?

 
 
 
 

490. The chromosomal number in:

 
 
 
 

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

 
 
 
 

492. Viruses have:

 
 
 
 

493. Acellular slime mold is/are:

 
 
 
 

494. A gill of Agaricus:

 
 
 
 

495. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

497. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

499. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

503. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

505. Reproduction in Cycas takes place by :

 
 
 
 

506. Penicillin was discovered by:

 
 
 
 

507. The leafy fern plant represents the:

 
 
 
 

508. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

510. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

518. The megasporangium of Selaginella is:

 
 
 
 

519. The zygospore in Rhizopus on germination forms:

 
 
 
 

520. The disease apple scab is caused by:

 
 
 
 

521. An Hfr bacterium is one that contains:

 
 
 
 

522. Lichens are pioneers of vegetation in a :

 
 
 
 

523. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529.

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

 
 
 
 

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

 
 
 
 

532. The group algae possesses representatives belonging to kingdom:

 
 
 
 

533. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

538. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

544. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

549. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

551. The fungi are mostly:

 
 
 
 

552. What are plasmids?

 
 
 
 

553. All protozoans possess:

 
 
 
 

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

 
 
 
 

555. Pythium debaryanum is the causative agent of:

 
 
 
 

556. Special feature of pollen grains of Pinus is :

 
 
 
 

557. 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?

 
 
 
 

558. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. Virion refers to:

 
 
 
 

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

 
 
 
 

563. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. Parmelia belongs to :

 
 
 
 

567. Ginkgo biloba is a:

 
 
 
 

568. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Gram stain is used to:

 
 
 
 

575. The role of meiosis is for:

 
 
 
 

576. Some biologists have used the term Mycetozoa for:

 
 
 
 

577. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. Lichens form the first community in

 
 
 
 

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

 
 
 
 

582. Water bloom is generally caused by :

 
 
 
 

583. Yeast is a source of:

 
 
 
 

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

 
 
 
 

585. Club moss is the common name of :

 
 
 
 

586. First animal pathogenic virus was discovered by:

 
 
 
 

587. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

589. Liverworts are included in :

 
 
 
 

590. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

592. Cycas is :

 
 
 
 

593. Bryophyta have a special character from other plants:

 
 
 
 

594. Streptomyces falls under:

 
 
 
 

595. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. What is mycorrhiza?

 
 
 
 

600. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

602. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

604. The DNA of E coli is:

 
 
 
 

605. Siphonogamy is found in:

 
 
 
 

606. Facultative parasite is:

 
 
 
 

607. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

609. Enzymes are absent in:

 
 
 
 

610. 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:

 
 
 
 

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

 
 
 
 

612. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Streptomycin is obtained from:

 
 
 
 

617. All archaebacteria lack:

 
 
 
 

618. Which have the largest antherozoid?

 
 
 
 

619. Which is not found in bacteria?

 
 
 
 

620. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

622. Which group of algae have an incipient nucleus?

 
 
 
 

623. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

625. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

627. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

633. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

635. The nucleus of bacteria is:

 
 
 
 

636. What is streptomycin?

 
 
 
 

637. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

641. Funaria is :

 
 
 
 

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

 
 
 
 

643. Protists which are diploid reproduce sexually by:

 
 
 
 

644. Leprosy is caused by:

 
 
 
 

645. In dinoflagellates, the two flagella are:

 
 
 
 

646. In Cycas which structure is equivalent to stamen?

 
 
 
 

647. Spermatophyta are characterized by producing:

 
 
 
 

648. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653.

 

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

 
 
 
 

655. Triple antigen injection or vaccine are for:

 
 
 
 

656. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

658. Most appropriate word for protozoans is:

 
 
 
 

659. Etiology includes the study of :

 
 
 
 

660. Redness of red sea is due to :

 
 
 
 

661. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

663. Cellular slime mold is:

 
 
 
 

664. Which is an exception to cell theory?

 
 
 
 

665. Antibiotic has been extracted from :

 
 
 
 

666. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

667. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

669. Vascular cryptogam is the term used for :

 
 
 
 

670. The largest alga is:

 
 
 
 

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

 
 
 
 

672. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. The archegonia of Selaginella are differentiated by:

 
 
 
 

677. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. The largest known bacterium is:

 
 
 
 

682. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

685. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

687. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

689. The most important property of yeast is:

 
 
 
 

690. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Ovary is absent in :

 
 
 
 

694. Azolla growing in paddy fields helps in:

 
 
 
 

695. Desired type of Cycas can be grown by:

 
 
 
 

696. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

701. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

703. The source of litmus is :

 
 
 
 

704. In a bacteriophage, DNA is present in:

 
 
 
 

705. Bacteriophage consists of:

 
 
 
 

706. Mostly type of zygospore in Ulothrix is:

 
 
 
 

707. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

709. Disease resistant plant varieties can be produced by :

 
 
 
 

710. What are Cyanobacteria?

 
 
 
 

711. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

713. The sexual reproductive organs in Rhizopus are:

 
 
 
 

714. Spirogyra represents the :

 
 
 
 

715. Which of the following shows heterotrichous habit?

 
 
 
 

716. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

717. Fern phloem lacks:

 
 
 
 

718. Citrus canker is caused by :

 
 
 
 

719. Broad spectrum antibiotic is, which:

 
 
 
 

720. Helotism word is used for the symbiosis between :

 
 
 
 

721. Most of the lichens are composed of :

 
 
 
 

722. Most of the algae are :

 
 
 
 

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

 
 
 
 

724. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

729. Viroids have:

 
 
 
 

730. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

734. The alga, Spirogyra are found in :

 
 
 
 

735. In Funaria, calyptra is derived from :

 
 
 
 

736. Club moss and Peat moss belong to:

 
 
 
 

737. Aflatoxin is produced as a product in :

 
 
 
 

738. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

740. Asexual reproductive body of Volvox is called:

 
 
 
 

741. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

743. Bacteria are found everywhere, except:

 
 
 
 

744. Centric discoid form of diatom is:

 
 
 
 

745. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

747. Seeds are characteristically found in:

 
 
 
 

748. Bacteria which are spherical are called:

 
 
 
 

749. Meristele of fern is:

 
 
 
 

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

 
 
 
 

751. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

757. The prothallus of fern is:

 
 
 
 

758. Photosynthetic protists belong to:

 
 
 
 

759. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

763. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Economic importance of bacteria lies in their being:

 
 
 
 

767. Most resistant spore in bacteria is:

 
 
 
 

768. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. Woody climbers are known as :

 
 
 
 

775. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

777. Indusium in Dryopteris is:

 
 
 
 

778. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

782. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. The mode of nutrition of bacteria is usually:

 
 
 
 

791. In Gymnocarpeae the fruiting body is :

 
 
 
 

792. Pollination in Cycas takes place by :

 
 
 
 

793. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

795. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

797. To which country Antony van Leeuwenhoek belong?

 
 
 
 

798. Choose the correct statement about Spirogyra:

 
 
 
 

799. 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:

 
 
 
 

800. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

802. The disease symptom necrosis refers to :

 
 
 
 

803. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Anoxygenic photosynthesis occurs in:

 
 
 
 

808. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. The chief characteristic of class Ascomycetes is:

 
 
 
 

812. Cyanophage is a virus that attacks:

 
 
 
 

813. Ovules are not found enclosed in ovary of:

 
 
 
 

814. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

816. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

818. Botulism is a:

 
 
 
 

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

 
 
 
 

820. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

822. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

825. The leaves of Funaria are :

 
 
 
 

826. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

827. 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?

 
 
 
 

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

 
 
 
 

829. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

831. Circular DNA is seen in:

 
 
 
 

832. NBG of Lucknow is now named as:

 
 
 
 

833. Azolla and Salvinia both are:

 
 
 
 

834. Embryophyta includes:

 
 
 
 

835. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

837. The similarity between cyanobacteria and bacteria:

 
 
 
 

838. Endemic plants are characterised by their:

 
 
 
 

839. Red rot of sugarcane is caused by:

 
 
 
 

840. The tree fern is:

 
 
 
 

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

 
 
 
 

842. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. Oswald Tippo’s classification is:

 
 
 
 

847. Pinus is:

 
 
 
 

848. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. Pollination drop is:

 
 
 
 

853. The prothallus of fern represents the plant:

 
 
 
 

854. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

856. The chloroplast of Chlamydomonas are:

 
 
 
 

857. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

859. Common phycobiont in a lichen is :

 
 
 
 

860. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

862. The Rhizopus gametes are formed in:

 
 
 
 

863. The sori in Dryopteris are found on:

 
 
 
 

864. Hormogonia are the vegetative reproductive structures of :