Quiz_Random

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

 
 
 
 

2. To which class Riccia belongs :

 
 
 
 

3. Acellular slime mold is/are:

 
 
 
 

4. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

6. In Funaria, calyptra is derived from :

 
 
 
 

7. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. What are Cyanobacteria?

 
 
 
 

11. Heterospory and ligulate leaves are a feature of:

 
 
 
 

12. The prothallus of fern is:

 
 
 
 

13. Genetic material of TMV is:

 
 
 
 

14. Azolla and Salvinia both are:

 
 
 
 

15. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

17. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

19. Mycoplasma was discovered by:

 
 
 
 

20. Pythium debaryanum is the causative agent of:

 
 
 
 

21. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

23. Bacteria which are spherical are called:

 
 
 
 

24. In moss, stomata are found:

 
 
 
 

25. Which have the largest antherozoid?

 
 
 
 

26. Pneumonia is caused by:

 
 
 
 

27. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

34. Halophiles are the bacteria that require for growth:

 
 
 
 

35. Liverworts are included in :

 
 
 
 

36. The flagella of Chlamydomonas are:

 
 
 
 

37. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Late blight of potato is caused by :

 
 
 
 

41. Ulothrix produces :

 
 
 
 

42. Roots are absent in :

 
 
 
 

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

 
 
 
 

44. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

46. Fruits are not found in :

 
 
 
 

47. The development of sporangium in Selaginella is:

 
 
 
 

48. The truncated cone of HIV consists of:

 
 
 
 

49. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

50. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

51. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. 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?

 
 
 
 

55. Some biologists have used the term Mycetozoa for:

 
 
 
 

56. Sexual reproduction in Rhizopus is by:

 
 
 
 

57. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Among the algae kelps are :

 
 
 
 

61. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. Which organisms are the oldest life forms?

 
 
 
 

71. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

73. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

75. The fern plant is:

 
 
 
 

76. The group algae possesses representatives belonging to kingdom:

 
 
 
 

77. Which is an edible fungus?

 
 
 
 

78. Broad spectrum antibiotic is, which:

 
 
 
 

79. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

80. Viroids have:

 
 
 
 

81. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

83. Rhizophore of Selaginella is:

 
 
 
 

84. The photosynthetic protists are:

 
 
 
 

85. Male gametes in Dryopteris are:

 
 
 
 

86. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

91. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

93. Etiology includes the study of :

 
 
 
 

94. The Rhizopus gametes are formed in:

 
 
 
 

95. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

111. Circular DNA is seen in:

 
 
 
 

112. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

114. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

119. In tracheophyta:

 
 
 
 

120. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

122. Cyathia is characterized by:

 
 
 
 

123. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

124. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. The gametophyte of moss has distinct phases :

 
 
 
 

131. Yeast is a source of:

 
 
 
 

132. Methanogens belong to:

 
 
 
 

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

 
 
 
 

134. Aflatoxin is produced by:

 
 
 
 

135. Which one of the following statement is wrong?

 
 
 
 

136. The mode of nutrition of bacteria is usually:

 
 
 
 

137. All archaebacteria lack:

 
 
 
 

138. Viruses have:

 
 
 
 

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

 
 
 
 

140. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. The largest known bacterium is:

 
 
 
 

147. The zoospores of Ulothrix are :

 
 
 
 

148. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

150. Cycas is:

 
 
 
 

151. Bacteria are placed under:

 
 
 
 

152. Funaria are commonly found :

 
 
 
 

153. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. Zoogametes are not found in:

 
 
 
 

163. Select the correct statement: (NEET 2016)

 
 
 
 

164. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

165. Embryo formation is not known in :

 
 
 
 

166. Antibiotics cure the disease by:

 
 
 
 

167. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

169. Funaria is :

 
 
 
 

170. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

175. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

177. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. The sexual reproductive organs in Rhizopus are:

 
 
 
 

181. The coralloid roots are :

 
 
 
 

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

 
 
 
 

183. Fern prothallus produces:

 
 
 
 

184. Transfusion tissue is present in the leaflet of:

 
 
 
 

185. The orders generally have the uniform endings:

 
 
 
 

186. The chloroplast in Ulothrix is :

 
 
 
 

187. The fungi used as food are:

 
 
 
 

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

 
 
 
 

189. Funaria is :

 
 
 
 

190. The order generally ends with:

 
 
 
 

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

 
 
 
 

192. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Diploxylic vascular bundles are found in:

 
 
 
 

201. Cell walls of Gram-positive bacteria contain:

 
 
 
 

202. Bacteria were first discovered by:

 
 
 
 

203. An Hfr bacterium is one that contains:

 
 
 
 

204. NBG of Lucknow is now named as:

 
 
 
 

205. Water bloom is generally caused by :

 
 
 
 

206. Heterosporous pteridophytes always form:

 
 
 
 

207. Which is a gametophytic tissue?

 
 
 
 

208. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. Embryophyta includes:

 
 
 
 

213. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

219. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. Ectocarpus produces:

 
 
 
 

223. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

224. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. In moss, conducting tissue is made up of

 
 
 
 

228. The two conjugating gametangia of Rhizopus are:

 
 
 
 

229. Vascular cryptogam is the term used for :

 
 
 
 

230. Select the wrong statement:

 
 
 
 

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

 
 
 
 

232. Desired type of Cycas can be grown by:

 
 
 
 

233. Ethylene oxide is widely used to:

 
 
 
 

234. Cellular slime mold is:

 
 
 
 

235. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

237. Enzymes are absent in:

 
 
 
 

238. Which is not found in bacteria?

 
 
 
 

239.

 

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

 
 
 
 

241. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

243. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

245. Ovary is absent in:

 
 
 
 

246. Sporophyte of Funaria is :

 
 
 
 

247. In Cycas which structure is equivalent to stamen?

 
 
 
 

248. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Siphonogamy is found in:

 
 
 
 

252. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

254. The source of litmus is :

 
 
 
 

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

 
 
 
 

256. Absorptive nutrition is:

 
 
 
 

257. Diphtheria is caused by:

 
 
 
 

258. Viruses are considered to be:

 
 
 
 

259. Wine turns sour because of:

 
 
 
 

260. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. Sometimes the bacterial cell is enclosed in:

 
 
 
 

264. 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?

 
 
 
 

265. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. To which country Antony van Leeuwenhoek belong?

 
 
 
 

269. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. Green plants are classified as:

 
 
 
 

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

 
 
 
 

274. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

276. In Cycas:

 
 
 
 

277. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Which of the following is a heterosporous pteridophyte?

 
 
 
 

281. Who discovered cyanophages?

 
 
 
 

282. Most primitive group of vascular plants are:

 
 
 
 

283. Ovary is absent in :

 
 
 
 

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

 
 
 
 

285. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

286. Cryptogams include :

 
 
 
 

287. Rhizoids of Riccia are :

 
 
 
 

288. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. The sporophyte of Riccia is represented by :

 
 
 
 

292. Which of the following applies to Selaginella?

 
 
 
 

293. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

298. Lichens show :

 
 
 
 

299. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

301. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

304. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

306. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

308. Mucilaginous canals in Cycas are found in :

 
 
 
 

309. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. Indusium in Dryopteris is:

 
 
 
 

313. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

316. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

317. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

319. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

320. Who named prion?

 
 
 
 

321. Coenogamete is found in:

 
 
 
 

322. Kuru, a human disease is caused by:

 
 
 
 

323. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

324. Protists which are diploid reproduce sexually by:

 
 
 
 

325. Penicillin is obtained from:

 
 
 
 

326. The role of meiosis is for:

 
 
 
 

327. Which group of algae have an incipient nucleus?

 
 
 
 

328. Lichen show :

 
 
 
 

329. Nannandria are:

 
 
 
 

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

 
 
 
 

331. The fungi are mostly:

 
 
 
 

332. The microsporophylls on the cone of Cycas are :

 
 
 
 

333. Botulinum toxin effects:

 
 
 
 

334. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Seeds are characteristically found in:

 
 
 
 

339. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. How is moss different from fern?

 
 
 
 

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

 
 
 
 

344. Fruits are not found in:

 
 
 
 

345. The gametophyte of fern bears:

 
 
 
 

346. Economic importance of bacteria lies in their being:

 
 
 
 

347. Germ theory of disease was proposed by:

 
 
 
 

348. Cycas plant in appearance resembles :

 
 
 
 

349. The megasporangium of Selaginella is:

 
 
 
 

350. The fungi that grow on wood are called:

 
 
 
 

351. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

353. The gametophyte of fern is as:

 
 
 
 

354.

355.

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

 
 
 
 

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

 
 
 
 

358. Nitrogen-fixing bacteria may be located:

 
 
 
 

359. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Photosynthetic bacteria have:

 
 
 
 

371. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

373. Which is a tautonym?

 
 
 
 

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

 
 
 
 

375. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Each chloroplast in Spirogyra bears :

 
 
 
 

379. The fungi are usually:

 
 
 
 

380. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

382. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

384. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

386. In moss, peristomial teeth are:

 
 
 
 

387. Which is not true for Escherichia coli?

 
 
 
 

388. Agar-agar is obtained from:

 
 
 
 

389. Pasteurized milk is:

 
 
 
 

390. Pasteur is famous for his:

 
 
 
 

391. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

392. Fern prothallus is:

 
 
 
 

393. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

395. The ascus of yeast contains:

 
 
 
 

396. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

398. Which is the correct statement about Selaginella?

 
 
 
 

399. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

401. Mostly type of zygospore in Ulothrix is:

 
 
 
 

402. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

404. Facultative parasite is:

 
 
 
 

405. True sexuality is not found in:

 
 
 
 

406. Pinus gerardiana is :

 
 
 
 

407. Why is Cycas called a living fossil?

 
 
 
 

408. In a bacteriophage, DNA is present in:

 
 
 
 

409. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. What are plasmids?

 
 
 
 

413. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

415. The leafy fern plant represents the:

 
 
 
 

416. Psilotum is:

 
 
 
 

417. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

419. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

425. In moss, reduction division occurs in :

 
 
 
 

426. Which of the following lichens is harmful?

 
 
 
 

427. Pasteurization of milk involves heating for:

 
 
 
 

428. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

431. Most of the algae are :

 
 
 
 

432. Photoautotrophic bacteria have:

 
 
 
 

433. Saccharomyces ludwigii ascus produces:

 
 
 
 

434. Most of the lichens are composed of :

 
 
 
 

435. Interferon is a:

 
 
 
 

436. The chromosomal number in:

 
 
 
 

437. The Rhizopus is:

 
 
 
 

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

 
 
 
 

439. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

441. Smallpox is caused by:

 
 
 
 

442. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. The sporangium of fern contains nearly:

 
 
 
 

454. Spirogyra represents the :

 
 
 
 

455. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

457. Generic name of mango is:

 
 
 
 

458. The archegonia in Selaginella develop on:

 
 
 
 

459. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

461. Viruses are commonly transmitted in plants through:

 
 
 
 

462. Red rot of sugarcane is caused by:

 
 
 
 

463. Water-net is the name of:

 
 
 
 

464. Citrus canker is caused by:

 
 
 
 

465. The largest alga is:

 
 
 
 

466. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. Embryophyta includes :

 
 
 
 

470. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. Mycoplasma contains:

 
 
 
 

474. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

476. Special feature of pollen grains of Pinus is :

 
 
 
 

477. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. The middle sterile part of capsule is called:

 
 
 
 

484. Most common type of conjugation in Spirogyra is :

 
 
 
 

485. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

486. Photosynthetic protists belong to:

 
 
 
 

487. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

489. Gametophyte is the main plant body in :

 
 
 
 

490. Mycoplasma are sensitive to:

 
 
 
 

491. The antibiotic is obtained from:

 
 
 
 

492. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

495. Pteridophyta are also called:

 
 
 
 

496. Ergot is obtained from :

 
 
 
 

497. Isomorphic type alternation of generation is found in:

 
 
 
 

498. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

500. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

502. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. Oswald Tippo’s classification is:

 
 
 
 

506. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Funaria is a Bryophyta because :

 
 
 
 

511. The tree fern is:

 
 
 
 

512. Triple antigen injection or vaccine are for:

 
 
 
 

513. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

515. Tautonyms are illegitimate in:

 
 
 
 

516. The sori in Dryopteris are found on:

 
 
 
 

517. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. Longest known virus is:

 
 
 
 

524. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

529. Which is a fungicide?

 
 
 
 

530. Pinus is:

 
 
 
 

531. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

533. Which statement is wrong in regard to bacteria?

 
 
 
 

534. The leaf of Cycas shows:

 
 
 
 

535. Maximum diversity of life forms occurs in :

 
 
 
 

536. Who discovered heterothallism in fungi?

 
 
 
 

537. A gill of Agaricus:

 
 
 
 

538. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

540. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. . Tapetum develops in:

 
 
 
 

544. Bacteria growing on synthetic medium are called:

 
 
 
 

545. Detailed study of bacteriophage was made by:

 
 
 
 

546. Iodine is obtained from :

 
 
 
 

547. Select the wrong statement:

 
 
 
 

548. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

550. In moss, sporogenous tissue arises from:

 
 
 
 

551. Which of the following are included in Tracheophyta?

 
 
 
 

552. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Pythium debaryanum is the causative agent of:

 
 
 
 

557. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

567. The DNA of E coli is:

 
 
 
 

568. Lichens reproduce by :

 
 
 
 

569. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

571. One of the distinctive feature of Spirogyra is :

 
 
 
 

572. In moss, calyptra is formed from:

 
 
 
 

573. Cocci types of bacteria are:

 
 
 
 

574. Bacteria are found everywhere, except:

 
 
 
 

575. The central part of Funaria axis is :

 
 
 
 

576. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

579. Cycas revoluta is widely grown as :

 
 
 
 

580. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

582. Bacteria are considered to be plants because they:

 
 
 
 

583. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

584. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

586. Leaf spot of groundnut is caused by :

 
 
 
 

587. Rhizopus and yeast are usually:

 
 
 
 

588. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

589. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

591. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

596. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. Penicillin was discovered by:

 
 
 
 

600. Which of the following is a parasitic algae?

 
 
 
 

601. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

604. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Which of the following is true for Selaginella?

 
 
 
 

612. Cycas is different from mango in :

 
 
 
 

613. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. The lambda phase is a:

 
 
 
 

617. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

621. All protozoans possess:

 
 
 
 

622. What is streptomycin?

 
 
 
 

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

 
 
 
 

624. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. Which is a redwood tree?

 
 
 
 

632. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

634. Chemosynthetic bacteria are:

 
 
 
 

635. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

640. 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:

 
 
 
 

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

 
 
 
 

642. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

644. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

646. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

655. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

657. Which of the following does not contain chlorophyll?

 
 
 
 

658. Most primitive embryophytes are placed in :

 
 
 
 

659. The roots of Cycas are :

 
 
 
 

660. Green plants are classified as :

 
 
 
 

661. Cleavage polyembryony is found in :

 
 
 
 

662. Pollination in Cycas takes place by :

 
 
 
 

663. The development of Selaginella embryo is:

 
 
 
 

664. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. Reserve food in Euglena is:

 
 
 
 

668. Amoeba is a member of the phylum:

 
 
 
 

669. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

671. In Pteris, the roots are:

 
 
 
 

672. The sporangiophores in Rhizopus are:

 
 
 
 

673. Anoxygenic photosynthesis occurs in:

 
 
 
 

674. Pseudomycelium is found in:

 
 
 
 

675. Which of the following have a prokaryotic cell?

 
 
 
 

676. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Cyanophage is a virus that attacks:

 
 
 
 

681. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

683. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

685. The leaves of Funaria are :

 
 
 
 

686. Facultative saprophyte is:

 
 
 
 

687. The stele of Dryopteris is a:

 
 
 
 

688. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

690. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

691. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. In Pteris, the archegonia are present:

 
 
 
 

696. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

698. The spermatozoids of Cycas are :

 
 
 
 

699. Asexual reproductive body of Volvox is called:

 
 
 
 

700. Reproduction in Cycas takes place by :

 
 
 
 

701. Soil fertility is lost by the activities of:

 
 
 
 

702. Rhizopus belongs to:

 
 
 
 

703. Yeast belongs to class:

 
 
 
 

704. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

712. Protozoans are considered animals because these are:

 
 
 
 

713. Who among the following discovered virus?

 
 
 
 

714. Total parasites belong to:

 
 
 
 

715. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. What is a vector?

 
 
 
 

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

 
 
 
 

720. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

722. Majority of lichens are :

 
 
 
 

723. Placenta in fern is:

 
 
 
 

724. Ergot of rye is caused by:

 
 
 
 

725. Most resistant spore in bacteria is:

 
 
 
 

726. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

728. Lichens are indicators of :

 
 
 
 

729. Early blight of potato is caused by:

 
 
 
 

730. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

732. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. What is special feature of fern archegonia?

 
 
 
 

738. Which of the following shows heterotrichous habit?

 
 
 
 

739. Mycoplasma are:

 
 
 
 

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

 
 
 
 

741. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

743. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

745. Lichens are the indicator of pollution :

 
 
 
 

746. Fern phloem lacks:

 
 
 
 

747. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

749. The archegonia of Selaginella are differentiated by:

 
 
 
 

750. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

752. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

754. Pinus microsporophyll bears:

 
 
 
 

755. The smallest bacterium is:

 
 
 
 

756. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

758. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. In moss, sporophyte is formed on:

 
 
 
 

763. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

765. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

772. Ginkgo biloba is a:

 
 
 
 

773. The gametophyte produced by apospory is :

 
 
 
 

774. Vascular cryptogams is the term used for:

 
 
 
 

775. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

777. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

780. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. Fertility of the soil is increased by:

 
 
 
 

784. 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:

 
 
 
 

785. The teeth of peristome of Funaria are :

 
 
 
 

786. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

788. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

790. Proembryo in Pinus is :

 
 
 
 

791. Helotism word is used for the symbiosis between :

 
 
 
 

792. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. Which causes red tide?

 
 
 
 

796. The smallest unit of classification is:

 
 
 
 

797. Cap cells are found in the filament of:

 
 
 
 

798. TMV was isolated in crystalline form by:

 
 
 
 

799.

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

 
 
 
 

801. In Cycas microsporangia are borne on:

 
 
 
 

802. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

804. The plants of Funaria grow :

 
 
 
 

805. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

807. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. John Hutchinson divided dicots into two divisions:

 
 
 
 

811. Climbers are found in genus:

 
 
 
 

812. In Funaria :

 
 
 
 

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

 
 
 
 

814. Centric discoid form of diatom is:

 
 
 
 

815. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

819. 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?

 
 
 
 

820. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

822. Meristele of fern is:

 
 
 
 

823. Meiosis in Ulothrix takes place:

 
 
 
 

824. Antibiotic has been extracted from :

 
 
 
 

825. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

827. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

829. Cycas is similar to a mustard plant :

 
 
 
 

830. 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:

 
 
 
 

831. Little leaf disease of Brinjal is caused by:

 
 
 
 

832. Lichens form the first community in

 
 
 
 

833. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. 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:

 
 
 
 

837. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

839. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

841. Bryophyta have been placed in cryptogams because:

 
 
 
 

842. Which of the following is true for viruses?

 
 
 
 

843. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

845. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

847. In Gymnosperms endosperm is a:

 
 
 
 

848. Milk is converted to curd by:

 
 
 
 

849. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

851. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

853. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

855. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. The sporangia of Selaginella are attached:

 
 
 
 

860. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

862. Heterotrichous habit means :

 
 
 
 

863. Funaria can be differentiated from Cycas :

 
 
 
 

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