Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. The term stele was given by:

 
 
 
 

6. What are plasmids?

 
 
 
 

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

 
 
 
 

8. Protistan algae obtain their food as:

 
 
 
 

9. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Funaria is a Bryophyta because :

 
 
 
 

19. Fruiting body of lichens is :

 
 
 
 

20. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

31. Which is a redwood tree?

 
 
 
 

32. Quarantine regulations are concerned with:

 
 
 
 

33. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

38. Sleeping sickness disease in man is caused by:

 
 
 
 

39. Gram stain is used to:

 
 
 
 

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

 
 
 
 

41. Lichens are ecologically important because :

 
 
 
 

42. The ferns are usually found:

 
 
 
 

43. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

45. Sometimes the bacterial cell is enclosed in:

 
 
 
 

46. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

48. Ovary is absent in:

 
 
 
 

49. Endemic plants are characterised by their:

 
 
 
 

50. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. The DNA of E coli is:

 
 
 
 

54. Liverworts are included in :

 
 
 
 

55. Protozoans are considered animals because these are:

 
 
 
 

56. In moss, peristomial teeth are:

 
 
 
 

57. Soil fertility is lost by the activities of:

 
 
 
 

58. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

60. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

62. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. Facultative parasite is:

 
 
 
 

66. Ulothrix produces :

 
 
 
 

67. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

72. The largest known bacterium is:

 
 
 
 

73. Which is an edible fungus?

 
 
 
 

74. Nannandria are:

 
 
 
 

75. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

77. Which part of Riccia bears nurse cells?

 
 
 
 

78. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. The gametophyte produced by apospory is :

 
 
 
 

83. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

85. Embryophyta includes :

 
 
 
 

86. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Germination of the seed of Pinus is :

 
 
 
 

92. Ethylene oxide is widely used to:

 
 
 
 

93. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

95. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Which lichen is called Reindeer moss?

 
 
 
 

99. Meristele of fern is:

 
 
 
 

100. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

104.

105. Pinus is:

 
 
 
 

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

 
 
 
 

107. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

108. Usually, bacteria reproduce by:

 
 
 
 

109. Which causes red tide?

 
 
 
 

110. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. 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?

 
 
 
 

116. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

118. Which one of the following statement is wrong?

 
 
 
 

119. Which of the following is a monocot?

 
 
 
 

120. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. Club moss is the common name of :

 
 
 
 

124. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

126. Which of the following statement is correct?

 
 
 
 

127. Which have the largest antherozoid?

 
 
 
 

128. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Most primitive embryophytes are placed in:

 
 
 
 

135. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Yeast grows more rapidly in:

 
 
 
 

139. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

141. Transfusion tissue is present in the leaflet of:

 
 
 
 

142. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

144. A gill of Agaricus:

 
 
 
 

145. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

147. Black rust of wheat is caused by:

 
 
 
 

148. Cryptogams include :

 
 
 
 

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

 
 
 
 

150. Antibiotic has been extracted from :

 
 
 
 

151. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

159. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

161. Why is Cycas called a living fossil?

 
 
 
 

162. Bacteriophage consists of:

 
 
 
 

163. Ergot is obtained from :

 
 
 
 

164. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

166. Helotism word is used for the symbiosis between :

 
 
 
 

167. The role of meiosis is for:

 
 
 
 

168. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

170. The middle sterile part of capsule is called:

 
 
 
 

171. Bryophyta have been placed in cryptogams because:

 
 
 
 

172. Gametophyte is the main plant body in :

 
 
 
 

173. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Fruits are not found in :

 
 
 
 

177. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. The sporophyte of Riccia is represented by :

 
 
 
 

181. Amoeba is a member of the phylum:

 
 
 
 

182. Penicillin was discovered by:

 
 
 
 

183. 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:

 
 
 
 

184. How a fern differs from a moss?

 
 
 
 

185. In Pteris, the roots are:

 
 
 
 

186. In Gymnocarpeae the fruiting body is :

 
 
 
 

187. The smallest bacterium is:

 
 
 
 

188. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

191. The order generally ends with:

 
 
 
 

192. Fairy ring is the name given to:

 
 
 
 

193. Detailed study of bacteriophage was made by:

 
 
 
 

194. Redness of red sea is due to :

 
 
 
 

195. The sori in Dryopteris are found on:

 
 
 
 

196. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

197. Roots are absent in :

 
 
 
 

198. 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:

 
 
 
 

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

 
 
 
 

200. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. The lambda phase is a:

 
 
 
 

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

 
 
 
 

205. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

207. Pseudomycelium is found in:

 
 
 
 

208. Absorptive nutrition is:

 
 
 
 

209. Which is the correct statement about Selaginella?

 
 
 
 

210. Lichens are indicators of :

 
 
 
 

211. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. Protists which are diploid reproduce sexually by:

 
 
 
 

220. Bacteria growing on synthetic medium are called:

 
 
 
 

221. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

223. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

225. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

228. Bentham and Hooker placed gymnosperms:

 
 
 
 

229. Some biologists have used the term Mycetozoa for:

 
 
 
 

230. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. Mycoplasma was discovered by:

 
 
 
 

238. Ovules are not found enclosed in ovary in :

 
 
 
 

239. Cleavage polyembryony is found in :

 
 
 
 

240. Which condition is found in Cycas?

 
 
 
 

241. Pasteurization of milk involves heating for:

 
 
 
 

242. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. Early blight of potato is caused by:

 
 
 
 

246. 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?

 
 
 
 

247. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Mycoplasmas are not viruses in nature because:

 
 
 
 

252. Which of the following applies to Selaginella?

 
 
 
 

253. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Standard size of a herbarium sheet is:

 
 
 
 

257. The coralloid roots are :

 
 
 
 

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

 
 
 
 

259. Ginkgo biloba is a:

 
 
 
 

260. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Simple polyembryony is found in :

 
 
 
 

266. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. Most primitive group of vascular plants are:

 
 
 
 

270. Lichens are pioneers of vegetation in a :

 
 
 
 

271. The tallest moss in the world is :

 
 
 
 

272. Red rot of sugarcane is caused by:

 
 
 
 

273. The phloem of vascular system of Cycas is :

 
 
 
 

274. Chemosynthetic bacteria are:

 
 
 
 

275.

276. Which is the nuclear material in bacteria?

 
 
 
 

277. In moss, reduction division occurs in :

 
 
 
 

278. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

280. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

286. Generic name of mango is:

 
 
 
 

287. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

288. Vascular tissue is found in :

 
 
 
 

289. The similarity between cyanobacteria and bacteria:

 
 
 
 

290. The mycelium of Rhizopus is:

 
 
 
 

291. Enzymes are absent in:

 
 
 
 

292. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. Lichens show :

 
 
 
 

296. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. Late blight of potato is caused by :

 
 
 
 

301. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

303. Viruses have:

 
 
 
 

304. Pasteurized milk is:

 
 
 
 

305. . Tapetum develops in:

 
 
 
 

306. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

308. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

310. The development of Selaginella embryo is:

 
 
 
 

311. Saccharomyces ludwigii ascus produces:

 
 
 
 

312. Which of the following have algal zone?

 
 
 
 

313. Which of the following is true for Selaginella?

 
 
 
 

314. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. The tree fern is:

 
 
 
 

318. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

320. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

322. Funaria is :

 
 
 
 

323. Smallpox is caused by:

 
 
 
 

324. Economic importance of bacteria lies in their being:

 
 
 
 

325. Cycas plant in appearance resembles :

 
 
 
 

326. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

328. Aflatoxin is produced as a product in :

 
 
 
 

329. Which bacteria convert nitrate into nitrogen?

 
 
 
 

330. Virus and bacteriophage are made-up of:

 
 
 
 

331. Desired type of Cycas can be grown by:

 
 
 
 

332. The photosynthetic protists are:

 
 
 
 

333. Small epidermal swellings due to infection are called :

 
 
 
 

334. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

335. Vegetative reproduction in Cycas is by means of :

 
 
 
 

336. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

338. Rhizopus and yeast are usually:

 
 
 
 

339. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Tautonyms are illegitimate in:

 
 
 
 

343. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

349. Nitrogen-fixing bacteria may be located:

 
 
 
 

350. 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:

 
 
 
 

351. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. Lichen show :

 
 
 
 

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

 
 
 
 

361. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

363. The smallest unit of classification is:

 
 
 
 

364. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

367. The chloroplast in Ulothrix is :

 
 
 
 

368. LSD is:

 
 
 
 

369. Mycoplasma are sensitive to:

 
 
 
 

370. In Herpes virus DNA is:

 
 
 
 

371. The fungi are usually:

 
 
 
 

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

 
 
 
 

373. Lichens reproduce by :

 
 
 
 

374. Which of the following shows heterotrichous habit?

 
 
 
 

375. NBG of Lucknow is now named as:

 
 
 
 

376. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

378. The mode of nutrition of bacteria is usually:

 
 
 
 

379. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. In dinoflagellates, the two flagella are:

 
 
 
 

386. Winged pollen grains are found in :

 
 
 
 

387. Which class of Protozoa includes all parasitic forms?

 
 
 
 

388. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

390. The Rhizopus gametes are formed in:

 
 
 
 

391. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

393. Water-net is the name of:

 
 
 
 

394. Viroids have:

 
 
 
 

395. Which fixes atmospheric nitrogen?

 
 
 
 

396. What are Cyanobacteria?

 
 
 
 

397. Which is not found in bacteria?

 
 
 
 

398. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

401. Which is a fungicide?

 
 
 
 

402. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

403. Banana bunchy top is caused by :

 
 
 
 

404. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

406. To which country Antony van Leeuwenhoek belong?

 
 
 
 

407. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

409. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

411. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. Photosynthetic bacteria have:

 
 
 
 

415. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. Which is a gametophytic tissue?

 
 
 
 

419. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

421. The roots of Cycas are :

 
 
 
 

422. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

428. In Pteris, the archegonia are present:

 
 
 
 

429. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

433. In moss, calyptra is formed from:

 
 
 
 

434. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. Select the correct statement: (NEET 2016)

 
 
 
 

438. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

443. Which one of the following is a monocot?

 
 
 
 

444. Streptomycin is obtained from:

 
 
 
 

445. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

447. Which of the following is sago palm?

 
 
 
 

448. The Rhizopus is:

 
 
 
 

449. Cell walls of Gram-positive bacteria contain:

 
 
 
 

450. Most of the algae are :

 
 
 
 

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

 
 
 
 

452. Which of the following is true for viruses?

 
 
 
 

453. Maximum diversity of life forms occurs in :

 
 
 
 

454. The source of litmus is :

 
 
 
 

455. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

457. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

459. In moss, sporogenous tissue arises from:

 
 
 
 

460. Longest known virus is:

 
 
 
 

461. Which of the following is a parasitic algae?

 
 
 
 

462. Bryophyta have a special character from other plants:

 
 
 
 

463. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

465. The chief characteristic of bryophyta is that :

 
 
 
 

466. What is streptomycin?

 
 
 
 

467. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

469. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

471. Meiosis in Ulothrix takes place:

 
 
 
 

472. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Who discovered streptomycin?

 
 
 
 

476. What is the role of nitrifying bacteria?

 
 
 
 

477. An alga which is rich in proteins:

 
 
 
 

478. Embryophyta includes:

 
 
 
 

479. In Cycas the fertilization is:

 
 
 
 

480. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

482. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

484. Fern prothallus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

487. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

489. What is absent in Deuteromycetes?

 
 
 
 

490. True sexuality is not found in:

 
 
 
 

491. Black rust of wheat is caused by:

 
 
 
 

492. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

494. E coli is a:

 
 
 
 

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

 
 
 
 

496. Pneumonia is caused by:

 
 
 
 

497. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

499. Pteridophyta are also called:

 
 
 
 

500. Pollination drop is:

 
 
 
 

501. Reproduction in Rhizopus is:

 
 
 
 

502. The leafy fern plant represents the:

 
 
 
 

503. Cycas is :

 
 
 
 

504. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

505. In Funaria, calyptra is derived from :

 
 
 
 

506. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

508. Mycoplasma are:

 
 
 
 

509. Broad spectrum antibiotic is, which:

 
 
 
 

510. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

512. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

515. The chloroplast of Chlamydomonas are:

 
 
 
 

516. Wine turns sour because of:

 
 
 
 

517. The sporangia of Selaginella are attached:

 
 
 
 

518. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

520. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

522. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

525. Circular DNA is seen in:

 
 
 
 

526. In tracheophyta:

 
 
 
 

527. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

529. The fungi used as food are:

 
 
 
 

530. Metulae are found in:

 
 
 
 

531. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

533. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

534. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. The most primitive vascular plants is:

 
 
 
 

538. Late blight of potato is caused by:

 
 
 
 

539. TMV was isolated in crystalline form by:

 
 
 
 

540. How is moss different from fern?

 
 
 
 

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

 
 
 
 

542. Ectocarpus produces:

 
 
 
 

543. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

545. Downy mildew disease is caused by :

 
 
 
 

546. All algae have:

 
 
 
 

547. Embryo formation is not known in :

 
 
 
 

548. Each chloroplast in Spirogyra bears :

 
 
 
 

549. Winged seeds are found in :

 
 
 
 

550. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Cocci types of bacteria are:

 
 
 
 

557. Total parasites belong to:

 
 
 
 

558. Discovery of penicillin was based on:

 
 
 
 

559. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. The truncated cone of HIV consists of:

 
 
 
 

564. Most of the lichens are composed of :

 
 
 
 

565. Which is not true for Escherichia coli?

 
 
 
 

566. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

568. Vascular cryptogam is the term used for :

 
 
 
 

569. One of the distinctive feature of Spirogyra is :

 
 
 
 

570. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

572. Select the wrong statement:

 
 
 
 

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

 
 
 
 

574. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

583. In binomial system most of the words are:

 
 
 
 

584. Oswald Tippo’s classification is:

 
 
 
 

585. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

587.

 

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

 
 
 
 

589. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

590. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

592. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Most primitive embryophytes are placed in :

 
 
 
 

596. Mucilaginous canals in Cycas are found in :

 
 
 
 

597. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

599. Black rust of wheat is caused by:

 
 
 
 

600. In a bacteriophage, DNA is present in:

 
 
 
 

601. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

607. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

609. Disease resistant plant varieties can be produced by :

 
 
 
 

610. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

615. Diphtheria is caused by:

 
 
 
 

616. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

618. The fern plant is:

 
 
 
 

619. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Leprosy is caused by:

 
 
 
 

623. Nitrifying bacteria play an important role by converting:

 
 
 
 

624. Some diseases caused by bacteria are:

 
 
 
 

625. Synzoospore is produced in:

 
 
 
 

626. First animal pathogenic virus was discovered by:

 
 
 
 

627. In moss, stomata are found:

 
 
 
 

628. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

630. Mixed cropping helps :

 
 
 
 

631. Germ theory of disease was proposed by:

 
 
 
 

632. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

634. What is a vector?

 
 
 
 

635. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

637. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. Methanogens belong to:

 
 
 
 

641. In Selaginella, the microsporangia are:

 
 
 
 

642. Climbers are found in genus:

 
 
 
 

643. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

645. In angiosperms double fertilization represents:

 
 
 
 

646. The rhizoids of Funaria are :

 
 
 
 

647. The stele of Dryopteris is a:

 
 
 
 

648. 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?

 
 
 
 

649. Heterospory and ligulate leaves are a feature of:

 
 
 
 

650. All protozoans possess:

 
 
 
 

651. Mostly type of zygospore in Ulothrix is:

 
 
 
 

652. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

653. Milk is converted to curd by:

 
 
 
 

654. The megasporangium of Selaginella is:

 
 
 
 

655. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

657. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

662. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. Azolla growing in paddy fields helps in:

 
 
 
 

666. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

668. Bacteria are placed under:

 
 
 
 

669. Woody climbers are known as :

 
 
 
 

670. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

671. Interferon is a:

 
 
 
 

672. Green plants are classified as :

 
 
 
 

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

 
 
 
 

674. Enteric bacteria are those bacteria that live:

 
 
 
 

675. Most primitive kind of flower is represented by:

 
 
 
 

676. Funaria is :

 
 
 
 

677. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

679. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

683. Cycas is different from mango in :

 
 
 
 

684. Bacteria which are spherical are called:

 
 
 
 

685. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. The antibiotic is obtained from:

 
 
 
 

692. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. The fungi are mostly:

 
 
 
 

696. The chief characteristic of class Ascomycetes is:

 
 
 
 

697. Yeast is a source of:

 
 
 
 

698.

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

 
 
 
 

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

 
 
 
 

701. The largest alga is:

 
 
 
 

702. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Asexual reproductive body of Volvox is called:

 
 
 
 

707. Pollination in Cycas takes place by :

 
 
 
 

708. Spermatophyta are characterized by producing:

 
 
 
 

709. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

711. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

715. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

717. The chromosomal number in:

 
 
 
 

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

 
 
 
 

719. Chemosynthetic bacteria are:

 
 
 
 

720. Fern phloem lacks:

 
 
 
 

721. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

726. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Ovary is absent in :

 
 
 
 

731. Cap cells are found in the filament of:

 
 
 
 

732. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

734. Rhizophore of Selaginella is:

 
 
 
 

735. Fruits are not found in:

 
 
 
 

736. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

737. Psilotum is:

 
 
 
 

738. In Gymnosperms endosperm is a:

 
 
 
 

739. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

742. 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?

 
 
 
 

743. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

745. Typhoid in man is caused by:

 
 
 
 

746. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

750. The nucleus of bacteria is:

 
 
 
 

751. Infective part of virus was discovered by:

 
 
 
 

752. Bacteriophages have been used as:

 
 
 
 

753. Iodine is obtained from:

 
 
 
 

754. In Cycas which structure is equivalent to stamen?

 
 
 
 

755. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

763. Parmelia belongs to :

 
 
 
 

764. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

766. Virion refers to:

 
 
 
 

767. Cellular slime mold is:

 
 
 
 

768. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. The gametophyte of fern bears:

 
 
 
 

775. Clostridium can:

 
 
 
 

776. Coenogamete is found in:

 
 
 
 

777. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

779. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

781. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

783. Saccharomyces is used in:

 
 
 
 

784. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

786. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Proembryo in Pinus is :

 
 
 
 

790. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Bivalved siliceous shell or frustule occur in:

 
 
 
 

797. In Funaria :

 
 
 
 

798. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. The seedless plants which possess vascular tissues are:

 
 
 
 

803. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

805. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

809. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

811. Azolla and Salvinia both are:

 
 
 
 

812. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

814. The sexual reproductive organs in Rhizopus are:

 
 
 
 

815. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

818. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

820. The young leaves of Cycas have :

 
 
 
 

821. Saccharomyces is well known for:

 
 
 
 

822. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

824. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

825. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

830. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

834. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

836. Streptomyces falls under:

 
 
 
 

837. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

841. Agar-agar is obtained from:

 
 
 
 

842. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

845. Sporophyte of Funaria is :

 
 
 
 

846. The fungi that grow on wood are called:

 
 
 
 

847. The upper region of moss capsule is :

 
 
 
 

848. Iodine is obtained from :

 
 
 
 

849. Green plants are classified as:

 
 
 
 

850. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

852. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

854. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. Spermatophyta are characterized by producing:

 
 
 
 

858. Ergot of rye is caused by:

 
 
 
 

859. Fruits are not found in Cycas because:

 
 
 
 

860. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

862. Club moss and Peat moss belong to:

 
 
 
 

863. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

864. Common phycobiont in a lichen is :