Quiz_Random

1. Which is a gametophytic tissue?

 
 
 
 

2. Banana bunchy top is caused by :

 
 
 
 

3. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

5. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

6. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. 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?

 
 
 
 

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

 
 
 
 

11.

12. Synzoospore is produced in:

 
 
 
 

13. The teeth of peristome of Funaria are :

 
 
 
 

14. Nitrogen-fixing bacteria may be located:

 
 
 
 

15. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. The gametophyte produced by apospory is :

 
 
 
 

19. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

21. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. Some diseases caused by bacteria are:

 
 
 
 

25.

 

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

 
 
 
 

27. Black rust of wheat is caused by:

 
 
 
 

28. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

33. Majority of lichens are :

 
 
 
 

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

 
 
 
 

35. Viruses have:

 
 
 
 

36. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

38. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

40. Most of the lichens are composed of :

 
 
 
 

41. Which causes red tide?

 
 
 
 

42. Chemosynthetic bacteria are:

 
 
 
 

43. The DNA of E coli is:

 
 
 
 

44. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

50. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

51. The microsporophylls on the cone of Cycas are :

 
 
 
 

52. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

54. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

56. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

58. Redness of red sea is due to :

 
 
 
 

59. Late blight of potato is caused by :

 
 
 
 

60. Funaria are commonly found :

 
 
 
 

61. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

63. Pythium debaryanum is the causative agent of:

 
 
 
 

64. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

65. 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:

 
 
 
 

66. The archegonia in Selaginella develop on:

 
 
 
 

67. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

69. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

71. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

72. Cell walls of Gram-positive bacteria contain:

 
 
 
 

73. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

75. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Lichens show :

 
 
 
 

81. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

92. The order generally ends with:

 
 
 
 

93. The leaf of Cycas shows:

 
 
 
 

94. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

96. Who named prion?

 
 
 
 

97. Sometimes the bacterial cell is enclosed in:

 
 
 
 

98. Spermatophyta are characterized by producing:

 
 
 
 

99. Lichens form the first community in

 
 
 
 

100. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Which of the following is a monocot?

 
 
 
 

107. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. The leafy fern plant represents the:

 
 
 
 

113. The sporangiophores in Rhizopus are:

 
 
 
 

114. Nannandria are:

 
 
 
 

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

 
 
 
 

116. Yeast is a source of:

 
 
 
 

117. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

124. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

126. Standard size of a herbarium sheet is:

 
 
 
 

127. Smallpox is caused by:

 
 
 
 

128. In moss, conducting tissue is made up of

 
 
 
 

129. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

131. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

140. 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:

 
 
 
 

141. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

144. Ovary is absent in :

 
 
 
 

145. Photoautotrophic bacteria have:

 
 
 
 

146. Pollination in Cycas takes place by :

 
 
 
 

147. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

149. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Infective part of virus was discovered by:

 
 
 
 

153. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

155. Club moss is the common name of :

 
 
 
 

156. Cycas plant in appearance resembles :

 
 
 
 

157. Generic name of mango is:

 
 
 
 

158. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

159. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

163. To which class Riccia belongs :

 
 
 
 

164. Which of the following are included in Tracheophyta?

 
 
 
 

165. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

167. Clostridium can:

 
 
 
 

168. Embryo formation is not known in :

 
 
 
 

169. Fertility of the soil is increased by:

 
 
 
 

170. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

175. Germination of the seed of Pinus is :

 
 
 
 

176. How is moss different from fern?

 
 
 
 

177. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

182. The most primitive vascular plants is:

 
 
 
 

183. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

191. Fruits are not found in :

 
 
 
 

192. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. Facultative saprophyte is:

 
 
 
 

197. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

198. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

200. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. Fern phloem lacks:

 
 
 
 

208. Which of the following applies to Selaginella?

 
 
 
 

209. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. The root nodules of leguminous plants contain:

 
 
 
 

213. The lambda phase is a:

 
 
 
 

214. The Rhizopus is:

 
 
 
 

215. One of the distinctive feature of Spirogyra is :

 
 
 
 

216. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. Ectocarpus produces:

 
 
 
 

221. What is absent in Deuteromycetes?

 
 
 
 

222. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

225. Fern prothallus produces:

 
 
 
 

226. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

228. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

229. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

231. Ulothrix produces :

 
 
 
 

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

 
 
 
 

233. In dinoflagellates, the two flagella are:

 
 
 
 

234. All algae have:

 
 
 
 

235. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

237. The chloroplast of Chlamydomonas are:

 
 
 
 

238. Woody climbers are known as :

 
 
 
 

239. Which of the following is true for viruses?

 
 
 
 

240. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

242. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

244. Iodine is obtained from:

 
 
 
 

245. 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:

 
 
 
 

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

 
 
 
 

247. Funaria is :

 
 
 
 

248. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. The source of litmus is :

 
 
 
 

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

 
 
 
 

253. To which country Antony van Leeuwenhoek belong?

 
 
 
 

254. Select the wrong statement:

 
 
 
 

255. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

257. An alga which is rich in proteins:

 
 
 
 

258. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. The antherozoids of Funaria are :

 
 
 
 

262. Pinus is:

 
 
 
 

263. Vegetative reproduction in Cycas is by means of :

 
 
 
 

264. Acetobacter is useful in:

 
 
 
 

265. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

267. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Aflatoxin is produced by:

 
 
 
 

271. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

273. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

278. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

280. Nitrifying bacteria play an important role by converting:

 
 
 
 

281. Anoxygenic photosynthesis occurs in:

 
 
 
 

282. Azolla growing in paddy fields helps in:

 
 
 
 

283. The ascus of yeast contains:

 
 
 
 

284. Penicillin was discovered by:

 
 
 
 

285. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

287. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

288. Which of the following are absent in Mycoplasma?

 
 
 
 

289. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

293. The first to isolate a plant virus was:

 
 
 
 

294. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

296. Ethylene oxide is widely used to:

 
 
 
 

297. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

299. The fungi are usually:

 
 
 
 

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

 
 
 
 

301. Selaginella differs from Moss in having:

 
 
 
 

302. Winged seeds are found in :

 
 
 
 

303. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

306. The archegonia of Selaginella are differentiated by:

 
 
 
 

307. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

309. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. The tree fern is:

 
 
 
 

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

 
 
 
 

314. The two conjugating gametangia of Rhizopus are:

 
 
 
 

315. The megaspore of Selaginella on germination produces:

 
 
 
 

316. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. The sporophyte of Riccia is :

 
 
 
 

320. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

322. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

324. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

327. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Which is absent from the xylem of Cycas?

 
 
 
 

331. Which lichen is called Reindeer moss?

 
 
 
 

332. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

334. Pollination in Pinus is :

 
 
 
 

335. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

337. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

341. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

343. Lichens are pioneers of vegetation in a :

 
 
 
 

344. Who discovered heterothallism in fungi?

 
 
 
 

345. The genetic material of poxvirus is:

 
 
 
 

346. Among the algae kelps are :

 
 
 
 

347. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Which of the following statements is not correct?

 
 
 
 

351. Citrus canker is caused by :

 
 
 
 

352. What is a vector?

 
 
 
 

353.

354. The gametophyte of moss has distinct phases :

 
 
 
 

355. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

357. Which of the following does not contain chlorophyll?

 
 
 
 

358. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. The prothallus of fern is:

 
 
 
 

363. Protists which are diploid reproduce sexually by:

 
 
 
 

364. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

366. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

368. Multicellular and jacketed sex organs are found in :

 
 
 
 

369. Seeds are characteristically found in:

 
 
 
 

370. Ovules are not found enclosed in ovary in :

 
 
 
 

371. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

373. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

377. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. The term stele was given by:

 
 
 
 

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

 
 
 
 

382. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. Genetic material of TMV is:

 
 
 
 

386. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. The fungi that grow on wood are called:

 
 
 
 

390. Photosynthetic bacteria have:

 
 
 
 

391. Fern prothallus is:

 
 
 
 

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

 
 
 
 

393. What is mycorrhiza?

 
 
 
 

394. Which of the following have algal zone?

 
 
 
 

395. In moss, sporogenous tissue arises from:

 
 
 
 

396. Which one of the following is a monocot?

 
 
 
 

397. Rice, pea, potato are :

 
 
 
 

398. Bacteria are considered to be plants because they:

 
 
 
 

399. Which of the following lichens is harmful?

 
 
 
 

400. What is special feature of fern archegonia?

 
 
 
 

401. Black rust of wheat is caused by:

 
 
 
 

402. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. Asexual reproductive body of Volvox is called:

 
 
 
 

406. Soil fertility is lost by the activities of:

 
 
 
 

407. Vascular tissue is found in :

 
 
 
 

408. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

409. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

411. Where does meiosis occur in yeast?

 
 
 
 

412. In moss, sporophyte is formed on:

 
 
 
 

413. Circular DNA is seen in:

 
 
 
 

414. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

416. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

419. The truncated cone of HIV consists of:

 
 
 
 

420. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

422. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

424. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

426. The plants of Funaria grow :

 
 
 
 

427. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

429. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

437. Pasteurized milk is:

 
 
 
 

438. Embryophyta includes:

 
 
 
 

439. What is streptomycin?

 
 
 
 

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

 
 
 
 

441. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

445. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

447. In Gymnosperms endosperm is a:

 
 
 
 

448. Triple antigen injection or vaccine are for:

 
 
 
 

449. Psilotum is:

 
 
 
 

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

 
 
 
 

451. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

453. Most primitive embryophytes are placed in:

 
 
 
 

454. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

456. Total parasites belong to:

 
 
 
 

457. Which is an edible fungus?

 
 
 
 

458. Lichen show :

 
 
 
 

459. Parmelia belongs to :

 
 
 
 

460. Sporophyte of Funaria is :

 
 
 
 

461. In moss, stomata are found:

 
 
 
 

462. The ferns are usually found:

 
 
 
 

463. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. Gram stain is used to:

 
 
 
 

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

 
 
 
 

470. Placenta in fern is:

 
 
 
 

471. Tautonyms are illegitimate in:

 
 
 
 

472. Which of the following is true for Selaginella?

 
 
 
 

473. Mostly type of zygospore in Ulothrix is:

 
 
 
 

474. LSD is:

 
 
 
 

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

 
 
 
 

476. Most primitive kind of flower is represented by:

 
 
 
 

477. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

479. 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?

 
 
 
 

480. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

482. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

484. Embryophyta includes :

 
 
 
 

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

 
 
 
 

486. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

488. Most appropriate word for protozoans is:

 
 
 
 

489. Desired type of Cycas can be grown by:

 
 
 
 

490. The stele of Dryopteris is a:

 
 
 
 

491. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

495. Bacteria which are spherical are called:

 
 
 
 

496. In a diplontic life cycle:

 
 
 
 

497. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

499. Bryophyta have a special character from other plants:

 
 
 
 

500. Absorptive nutrition is:

 
 
 
 

501. Sexual reproduction of lichen is due to :

 
 
 
 

502. Which of the following is a heterosporous pteridophyte?

 
 
 
 

503. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

510. Simple polyembryony is found in :

 
 
 
 

511. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

513. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

515. Meiosis in Ulothrix takes place:

 
 
 
 

516. In Pteris, the archegonia are present:

 
 
 
 

517. Spirogyra represents the :

 
 
 
 

518. Select the wrong statement:

 
 
 
 

519. Bacteria were first discovered by:

 
 
 
 

520. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

521. Red rot of sugarcane is caused by :

 
 
 
 

522. The fungi used as food are:

 
 
 
 

523. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

525. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

527. Rhizopus and yeast are usually:

 
 
 
 

528. Which of the following is sago palm?

 
 
 
 

529. Disease resistant plant varieties can be produced by :

 
 
 
 

530. Pinus microsporophyll bears:

 
 
 
 

531. Rhizoids of Riccia are :

 
 
 
 

532. Halophiles are the bacteria that require for growth:

 
 
 
 

533. Water-net is the name of:

 
 
 
 

534. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

543. The fungi are mostly:

 
 
 
 

544. Pteridophyta are also called:

 
 
 
 

545. 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:

 
 
 
 

546. Botulism is a:

 
 
 
 

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

 
 
 
 

548. Wine turns sour because of:

 
 
 
 

549. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

555. Plasmids are:

 
 
 
 

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

 
 
 
 

557. Cycas is different from mango in :

 
 
 
 

558. Yeast belongs to class:

 
 
 
 

559. Saccharomyces is well known for:

 
 
 
 

560. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

562. Each chloroplast in Spirogyra bears :

 
 
 
 

563. Most of the algae are :

 
 
 
 

564. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

566. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

568. Bacteria are found everywhere, except:

 
 
 
 

569. The gametophyte of fern is as:

 
 
 
 

570. Fern plants are:

 
 
 
 

571. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

573. Typhoid in man is caused by:

 
 
 
 

574. Club moss and Peat moss belong to:

 
 
 
 

575. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

577. The roots of Cycas are :

 
 
 
 

578. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Mycoplasma are:

 
 
 
 

586. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

589. Metulae are found in:

 
 
 
 

590. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

591. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

593. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

595. Meristele of fern is:

 
 
 
 

596. Citrus canker is caused by:

 
 
 
 

597. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

599. The sexual reproductive organs in Rhizopus are:

 
 
 
 

600. Leprosy is caused by:

 
 
 
 

601. Bryophyta have been placed in cryptogams because:

 
 
 
 

602. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

604. Funaria is a Bryophyta because :

 
 
 
 

605. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

606. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

612. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

614. The most important property of yeast is:

 
 
 
 

615. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

617. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

619. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

621. Funaria can be differentiated from Cycas :

 
 
 
 

622. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. Liverworts are included in :

 
 
 
 

627. Coenogamete is found in:

 
 
 
 

628. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

630. Most common type of conjugation in Spirogyra is :

 
 
 
 

631. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

633. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

635. Mycoplasma contains:

 
 
 
 

636. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

638. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

640. Which is a tautonym?

 
 
 
 

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

 
 
 
 

642. The orders generally have the uniform endings:

 
 
 
 

643. True sexuality is not found in:

 
 
 
 

644. In Funaria, calyptra is derived from :

 
 
 
 

645. Acellular slime mold is/are:

 
 
 
 

646. The mycelium of Rhizopus is:

 
 
 
 

647. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. In Cycas which structure is equivalent to stamen?

 
 
 
 

651. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

654. Fruits are not found in:

 
 
 
 

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

 
 
 
 

656. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

658. In Funaria :

 
 
 
 

659. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

661. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

663. Aflatoxin is produced as a product in :

 
 
 
 

664. An Hfr bacterium is one that contains:

 
 
 
 

665. The chromosomal number in:

 
 
 
 

666. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

669. Lichens are ecologically important because :

 
 
 
 

670. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. Seeds are characteristically found in :

 
 
 
 

674. Why is Cycas called a living fossil?

 
 
 
 

675. Some bacteria cannot be killed easily because of:

 
 
 
 

676. The coralloid roots are :

 
 
 
 

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

 
 
 
 

678. Lichens are the indicator of pollution :

 
 
 
 

679. The upper region of moss capsule is :

 
 
 
 

680. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

682. Funaria is :

 
 
 
 

683. Select the correct statement: (NEET 2016)

 
 
 
 

684. Ovules are not found enclosed in ovary in :

 
 
 
 

685. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

691. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. Facultative parasite is:

 
 
 
 

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

 
 
 
 

701. Botulinum toxin effects:

 
 
 
 

702. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

706. Usually, bacteria reproduce by:

 
 
 
 

707. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

709. What are Cyanobacteria?

 
 
 
 

710. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. Mucilaginous canals in Cycas are found in :

 
 
 
 

715. Germ theory of disease was proposed by:

 
 
 
 

716. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

718. In Cycas microsporangia are borne on:

 
 
 
 

719. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

721. Reproduction in Cycas takes place by :

 
 
 
 

722. Ovary is absent in:

 
 
 
 

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

 
 
 
 

724. The flagella of Chlamydomonas are:

 
 
 
 

725. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

728. The phloem of vascular system of Cycas is :

 
 
 
 

729. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

732. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

733. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

734. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. Cycas is :

 
 
 
 

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

 
 
 
 

740. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

742. Photosynthetic protists belong to:

 
 
 
 

743. Early blight of potato is caused by:

 
 
 
 

744. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

746. Which bacteria convert nitrate into nitrogen?

 
 
 
 

747. In Gymnocarpeae the fruiting body is :

 
 
 
 

748. Leaf spot of groundnut is caused by :

 
 
 
 

749. Antibiotic has been extracted from :

 
 
 
 

750. The largest alga is:

 
 
 
 

751. The prothallus of fern represents the plant:

 
 
 
 

752. Water bloom is generally caused by :

 
 
 
 

753. Red rot of sugarcane is caused by :

 
 
 
 

754. The alga, Spirogyra are found in :

 
 
 
 

755. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

765. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769.

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

 
 
 
 

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

 
 
 
 

772. Lichens reproduce by :

 
 
 
 

773. In Cycas the fertilization is:

 
 
 
 

774. Helotism word is used for the symbiosis between :

 
 
 
 

775. 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?

 
 
 
 

776. Special feature of pollen grains of Pinus is :

 
 
 
 

777. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

779. 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:

 
 
 
 

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

 
 
 
 

781. Which of the following are included in Tracheophyta?

 
 
 
 

782. Which fixes atmospheric nitrogen?

 
 
 
 

783. Late blight of potato is caused by:

 
 
 
 

784. Oswald Tippo’s classification was based on :

 
 
 
 

785. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Viroids have:

 
 
 
 

790. The megasporangium of Selaginella is:

 
 
 
 

791. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

796. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

798. Cycas is similar to a mustard plant :

 
 
 
 

799. Maximum diversity of life forms occurs in :

 
 
 
 

800. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

802. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

805. Cyathia is characterized by:

 
 
 
 

806. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

808. Economic importance of bacteria lies in their being:

 
 
 
 

809. Kuru, a human disease is caused by:

 
 
 
 

810. In tracheophyta:

 
 
 
 

811. Ergot of rye is caused by:

 
 
 
 

812. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

814. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

819. The central part of Funaria axis is :

 
 
 
 

820. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

822. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. John Hutchinson divided dicots into two divisions:

 
 
 
 

827. The tallest moss in the world is :

 
 
 
 

828. Interferon is a:

 
 
 
 

829. Cleavage polyembryony is found in :

 
 
 
 

830. Saccharomyces is used in:

 
 
 
 

831. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

833. The group algae possesses representatives belonging to kingdom:

 
 
 
 

834. Saccharomyces ludwigii ascus produces:

 
 
 
 

835. Fairy ring is the name given to:

 
 
 
 

836. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

839. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. Which is a fungicide?

 
 
 
 

843. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

845. What is the role of nitrifying bacteria?

 
 
 
 

846. Ovules are not found enclosed in ovary of:

 
 
 
 

847. Male gametes in Dryopteris are:

 
 
 
 

848. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

850. All protozoans possess:

 
 
 
 

851. Longest known virus is:

 
 
 
 

852. Azolla and Salvinia both are:

 
 
 
 

853. Which one of the following statement is wrong?

 
 
 
 

854. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

855. Which have the largest antherozoid?

 
 
 
 

856. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

858. Cap cells are found in the filament of:

 
 
 
 

859. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. The chief characteristic of bryophyta is that :

 
 
 
 

863. The nucleus of bacteria is:

 
 
 
 

864. Broad spectrum antibiotic is, which: