Quiz_Random

1. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

3. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

5. Amoeba is a member of the phylum:

 
 
 
 

6. Helotism word is used for the symbiosis between :

 
 
 
 

7. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

12. Linnaeus is credited with introducing:

 
 
 
 

13. Viruses are considered to be:

 
 
 
 

14. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

16. Which of the following is true for Selaginella?

 
 
 
 

17. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

19. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Which causes red tide?

 
 
 
 

26. Most of the algae are :

 
 
 
 

27. The leafy fern plant represents the:

 
 
 
 

28. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. 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?

 
 
 
 

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

 
 
 
 

33. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

38. Which statement is wrong in regard to bacteria?

 
 
 
 

39. In moss, peristomial teeth are:

 
 
 
 

40. The photosynthetic protists are:

 
 
 
 

41. Cap cells are found in the filament of:

 
 
 
 

42. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

44. The gametophyte of fern bears:

 
 
 
 

45. An Hfr bacterium is one that contains:

 
 
 
 

46. Pasteur is famous for his:

 
 
 
 

47. Bryophyta have been placed in cryptogams because:

 
 
 
 

48. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

53. In Cycas:

 
 
 
 

54. Club moss and Peat moss belong to:

 
 
 
 

55. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

57. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

62. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

64. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

66. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

71. Ergot is obtained from :

 
 
 
 

72. The DNA of E coli is:

 
 
 
 

73. Where does meiosis occur in yeast?

 
 
 
 

74. White rust of crucifers is caused by:

 
 
 
 

75. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Male gametophyte of Selaginella is found:

 
 
 
 

80. The spur of Pinus roxburghii has :

 
 
 
 

81. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

88. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. The coralloid roots are :

 
 
 
 

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

 
 
 
 

93. Acetobacter is useful in:

 
 
 
 

94. The genetic material of poxvirus is:

 
 
 
 

95. Centric discoid form of diatom is:

 
 
 
 

96. The chromosomal number in:

 
 
 
 

97. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

98. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. In moss, reduction division occurs in :

 
 
 
 

103. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

105. Protistan algae obtain their food as:

 
 
 
 

106. 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:

 
 
 
 

107. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

110. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

111. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

113. Nannandria are:

 
 
 
 

114. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

116. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. Some diseases caused by bacteria are:

 
 
 
 

128. Which is a fungicide?

 
 
 
 

129. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. The microsporophylls on the cone of Cycas are :

 
 
 
 

135. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

136. Which class of Protozoa includes all parasitic forms?

 
 
 
 

137. All algae have:

 
 
 
 

138. In a diplontic life cycle:

 
 
 
 

139. The chief characteristic of bryophyta is that :

 
 
 
 

140. The fungi used as food are:

 
 
 
 

141. The sporophyte of Riccia is represented by :

 
 
 
 

142. Zoogametes are not found in:

 
 
 
 

143. Ovules are not found enclosed in ovary in :

 
 
 
 

144. Proembryo in Pinus is :

 
 
 
 

145. Cycas plant in appearance resembles :

 
 
 
 

146. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

148. Plasmids are:

 
 
 
 

149. In Selaginella, the microsporangia are:

 
 
 
 

150. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Select the wrong statement:

 
 
 
 

161. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

163. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

165. Most of the lichens are composed of :

 
 
 
 

166. Common phycobiont in a lichen is :

 
 
 
 

167. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Interferon is a:

 
 
 
 

172. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Which of the following applies to Selaginella?

 
 
 
 

177. Green plants are classified as:

 
 
 
 

178. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. Funaria is :

 
 
 
 

182. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

184. Virus and bacteriophage are made-up of:

 
 
 
 

185. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Virion refers to:

 
 
 
 

191. Seeds are characteristically found in:

 
 
 
 

192. Standard size of a herbarium sheet is:

 
 
 
 

193. The rhizoids of Funaria are :

 
 
 
 

194. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Antibiotics cure the disease by:

 
 
 
 

198. Spirogyra represents the :

 
 
 
 

199. Early blight of potato is caused by:

 
 
 
 

200. In Pteris, the roots are:

 
 
 
 

201. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

203. 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?

 
 
 
 

204. What is absent in Deuteromycetes?

 
 
 
 

205. Heterocysts are found in :

 
 
 
 

206. In Gymnosperms endosperm is a:

 
 
 
 

207. Desired type of Cycas can be grown by:

 
 
 
 

208. Saccharomyces is well known for:

 
 
 
 

209. Black rust of wheat is caused by:

 
 
 
 

210. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

213. Smut of maize is caused by :

 
 
 
 

214. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

221. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

223. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

226. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

232. Agar-agar is obtained from:

 
 
 
 

233. Which of the following is sago palm?

 
 
 
 

234. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

244. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

250. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

252. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. The antibiotic is obtained from:

 
 
 
 

256. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Meristele of fern is:

 
 
 
 

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

 
 
 
 

261. In Pteris, the archegonia are present:

 
 
 
 

262. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. Water-borne bacterial diseases are:

 
 
 
 

267. Sporophyte of fern is:

 
 
 
 

268. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

274. Simple polyembryony is found in :

 
 
 
 

275. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. Each chloroplast in Spirogyra bears :

 
 
 
 

279. The gametophyte of moss has distinct phases :

 
 
 
 

280. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

282. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

284. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

287. What is streptomycin?

 
 
 
 

288. Roots are absent in :

 
 
 
 

289. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

291. Sporophyte of Funaria is :

 
 
 
 

292. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. Embryophyta includes:

 
 
 
 

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

 
 
 
 

303. Downy mildew disease is caused by :

 
 
 
 

304. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

306. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

307. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

309. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

311. Fern plants are:

 
 
 
 

312. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

321. Special feature of pollen grains of Pinus is :

 
 
 
 

322. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

325. Mycoplasma are sensitive to:

 
 
 
 

326. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

328. Soil fertility is lost by the activities of:

 
 
 
 

329. Which of the following have a prokaryotic cell?

 
 
 
 

330. Maximum diversity of life forms occurs in :

 
 
 
 

331. Selaginella differs from Moss in having:

 
 
 
 

332. Select the correct statement: (NEET 2016)

 
 
 
 

333. The truncated cone of HIV consists of:

 
 
 
 

334. E coli is a:

 
 
 
 

335. Enzymes are absent in:

 
 
 
 

336. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Water-net is the name of:

 
 
 
 

343. 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:

 
 
 
 

344. Lichens form the first community in

 
 
 
 

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

 
 
 
 

346. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

348. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

349. The plants of Funaria grow :

 
 
 
 

350. Cycas is:

 
 
 
 

351. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

353. Which of the following shows heterotrichous habit?

 
 
 
 

354. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

356. 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:

 
 
 
 

357. Ovules are not found enclosed in ovary in :

 
 
 
 

358. Transfusion tissue is present in the leaflet of:

 
 
 
 

359. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

361. Citrus canker is caused by:

 
 
 
 

362. Choose the correct statement about Spirogyra:

 
 
 
 

363. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

365. Which of the following does not contain chlorophyll?

 
 
 
 

366. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

372. Which have the largest antherozoid?

 
 
 
 

373. 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:

 
 
 
 

374. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

376. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

382. The similarity between cyanobacteria and bacteria:

 
 
 
 

383. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. Which of the following is a heterosporous pteridophyte?

 
 
 
 

388. Embryophyta includes :

 
 
 
 

389. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

390. Psilotum is:

 
 
 
 

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

 
 
 
 

392. The middle sterile part of capsule is called:

 
 
 
 

393. The orders generally have the uniform endings:

 
 
 
 

394. Cycas is different from mango in :

 
 
 
 

395. Mycoplasma are:

 
 
 
 

396. Fern prothallus is:

 
 
 
 

397. Discovery of penicillin was based on:

 
 
 
 

398. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

400. Streptomycin is obtained from:

 
 
 
 

401. The chloroplast in Ulothrix is :

 
 
 
 

402. All protozoans possess:

 
 
 
 

403. Small epidermal swellings due to infection are called :

 
 
 
 

404. Which organisms are the oldest life forms?

 
 
 
 

405. Lichens reproduce by :

 
 
 
 

406. The flagella of Chlamydomonas are:

 
 
 
 

407. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

409. Chemosynthetic bacteria are:

 
 
 
 

410. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

415. The megaspore of Selaginella on germination produces:

 
 
 
 

416. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Oswald Tippo’s classification was based on :

 
 
 
 

422. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427.

 

428. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

430. Pollination in Cycas takes place by :

 
 
 
 

431. Pseudomycelium is found in:

 
 
 
 

432. Protists which are diploid reproduce sexually by:

 
 
 
 

433. The zoospores of Ulothrix are :

 
 
 
 

434. The male gametes of Pinus are :

 
 
 
 

435. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Placenta in fern is:

 
 
 
 

442. Which of the following lichens is harmful?

 
 
 
 

443. In Herpes virus DNA is:

 
 
 
 

444. Select the wrong statement:

 
 
 
 

445. The disease symptom necrosis refers to :

 
 
 
 

446. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. The smallest bacterium is:

 
 
 
 

455. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

457. Heterosporous pteridophytes always form:

 
 
 
 

458. Kuru, a human disease is caused by:

 
 
 
 

459. Yeast is a source of:

 
 
 
 

460. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

462. Fruiting body of lichens is :

 
 
 
 

463. Indusium in Dryopteris is:

 
 
 
 

464. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

465. Which is an exception to cell theory?

 
 
 
 

466. Some biologists have used the term Mycetozoa for:

 
 
 
 

467. The teeth of peristome of Funaria are :

 
 
 
 

468. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

471. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

473. Etiology includes the study of :

 
 
 
 

474. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Rhizopus belongs to:

 
 
 
 

479. The fungi that grow on wood are called:

 
 
 
 

480. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

484. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

486. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

488. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

496. Facultative saprophyte is:

 
 
 
 

497. The fungi are usually:

 
 
 
 

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

 
 
 
 

499. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. Ulothrix produces :

 
 
 
 

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

 
 
 
 

504. In moss, sporogenous tissue arises from:

 
 
 
 

505. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

510. Reproduction in Rhizopus is:

 
 
 
 

511. Lichens are the indicator of pollution :

 
 
 
 

512. The roots of Cycas are :

 
 
 
 

513. Late blight of potato is caused by:

 
 
 
 

514. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

515. Facultative parasite is:

 
 
 
 

516. Fertility of the soil is increased by:

 
 
 
 

517. Usually, bacteria reproduce by:

 
 
 
 

518. The gametophyte of fern is as:

 
 
 
 

519. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Penicillin was discovered by:

 
 
 
 

523. Majority of lichens are :

 
 
 
 

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

 
 
 
 

525.

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

 
 
 
 

527. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

529. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

531. Green plants are classified as :

 
 
 
 

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

 
 
 
 

533. Who discovered streptomycin?

 
 
 
 

534. Generic name of mango is:

 
 
 
 

535. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

539. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

541. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

543. Rhizoids of Riccia are :

 
 
 
 

544. Redness of red sea is due to :

 
 
 
 

545. Bivalved siliceous shell or frustule occur in:

 
 
 
 

546. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

548. Pasteurized milk is:

 
 
 
 

549. The prothallus of fern is:

 
 
 
 

550. Saccharomyces ludwigii ascus produces:

 
 
 
 

551. Antibiotic has been extracted from :

 
 
 
 

552. The order generally ends with:

 
 
 
 

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

 
 
 
 

554. Chemosynthetic bacteria are:

 
 
 
 

555. What are plasmids?

 
 
 
 

556. To which country Antony van Leeuwenhoek belong?

 
 
 
 

557. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Rhizopus and yeast are usually:

 
 
 
 

561. Pneumonia is caused by:

 
 
 
 

562. Broad spectrum antibiotic is, which:

 
 
 
 

563.

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

 
 
 
 

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

 
 
 
 

566. The spermatozoids of Cycas are :

 
 
 
 

567. Penicillin is obtained from:

 
 
 
 

568. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

570. LSD is:

 
 
 
 

571. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

573. Vascular cryptogams is the term used for:

 
 
 
 

574. Spirogyra differs from moss protonema in having :

 
 
 
 

575. Citrus canker is caused by :

 
 
 
 

576. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

579. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

581. Which condition is found in Cycas?

 
 
 
 

582. Botulism is a:

 
 
 
 

583. Saccharomyces is used in:

 
 
 
 

584. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

586. The archegonia of Selaginella are differentiated by:

 
 
 
 

587. John Hutchinson divided dicots into two divisions:

 
 
 
 

588. NBG of Lucknow is now named as:

 
 
 
 

589. Coenogamete is found in:

 
 
 
 

590. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. The young leaves of Cycas have :

 
 
 
 

596. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

598. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

600. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

602. The term stele was given by:

 
 
 
 

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

 
 
 
 

604. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

606. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. Cyathia is characterized by:

 
 
 
 

611. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

613. Pteridophyta are also called:

 
 
 
 

614. Meiosis in Ulothrix takes place:

 
 
 
 

615. Most appropriate word for protozoans is:

 
 
 
 

616. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Ovary is absent in:

 
 
 
 

620. Mostly type of zygospore in Ulothrix is:

 
 
 
 

621. Who named prion?

 
 
 
 

622. Which is a gametophytic tissue?

 
 
 
 

623. One of the distinctive feature of Spirogyra is :

 
 
 
 

624. Fruits are not found in :

 
 
 
 

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

 
 
 
 

626. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

627. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

629. All archaebacteria lack:

 
 
 
 

630. Iodine is obtained from:

 
 
 
 

631. Bacteria are placed under:

 
 
 
 

632. Rhizophore of Selaginella is:

 
 
 
 

633. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

634. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. Parmelia belongs to :

 
 
 
 

639. 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?

 
 
 
 

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

 
 
 
 

641. Metulae are found in:

 
 
 
 

642. The tallest moss in the world is :

 
 
 
 

643. Mycoplasma is different from bacteria due to:

 
 
 
 

644. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

648. The fungi are mostly:

 
 
 
 

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

 
 
 
 

650. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

652. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

654. The source of litmus is :

 
 
 
 

655. Sexual reproduction of lichen is due to :

 
 
 
 

656. Fruits are not found in:

 
 
 
 

657. Streptomyces falls under:

 
 
 
 

658. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

666. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

668. The seedless plants which possess vascular tissues are:

 
 
 
 

669. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

671. Bacteria were first discovered by:

 
 
 
 

672. Total parasites belong to:

 
 
 
 

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

 
 
 
 

674. The first to isolate a plant virus was:

 
 
 
 

675. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

677. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. Acellular slime mold is/are:

 
 
 
 

681. Bacteriophages have been used as:

 
 
 
 

682. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

684. Fern phloem lacks:

 
 
 
 

685. A gill of Agaricus:

 
 
 
 

686. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

688. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

691. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

697. Methanogens belong to:

 
 
 
 

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

 
 
 
 

699. Which of the following statement is correct?

 
 
 
 

700.

701. An alga which is rich in proteins:

 
 
 
 

702. Who discovered heterothallism in fungi?

 
 
 
 

703. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

705. In angiosperms double fertilization represents:

 
 
 
 

706. The sori in Dryopteris are found on:

 
 
 
 

707. Pinus is:

 
 
 
 

708. Gymnosperms could also be called as:

 
 
 
 

709. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

711. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. True sexuality is not found in:

 
 
 
 

715. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

717. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

722. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

724. Cocci types of bacteria are:

 
 
 
 

725. 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:

 
 
 
 

726. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

728. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

730. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

732. Male gametes in Dryopteris are:

 
 
 
 

733. The prothallus of fern represents the plant:

 
 
 
 

734. The group algae possesses representatives belonging to kingdom:

 
 
 
 

735. Multicellular and jacketed sex organs are found in :

 
 
 
 

736. Iodine is obtained from :

 
 
 
 

737. The sporangiophores in Rhizopus are:

 
 
 
 

738. Which is a redwood tree?

 
 
 
 

739. Club moss is the common name of :

 
 
 
 

740. Pythium debaryanum is the causative agent of:

 
 
 
 

741. The tree fern is:

 
 
 
 

742. Anoxygenic photosynthesis occurs in:

 
 
 
 

743. Ovary is absent in :

 
 
 
 

744. Synzoospore is produced in:

 
 
 
 

745. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

747. Which of the following is true for viruses?

 
 
 
 

748. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

750. What is a vector?

 
 
 
 

751. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

753. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

755. Pythium debaryanum is the causative agent of:

 
 
 
 

756. Milk is converted to curd by:

 
 
 
 

757. Heterospory and ligulate leaves are a feature of:

 
 
 
 

758. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Funaria is :

 
 
 
 

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

 
 
 
 

763. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

765. 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:

 
 
 
 

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

 
 
 
 

767. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

769. Yeast belongs to class:

 
 
 
 

770. Funaria is a Bryophyta because :

 
 
 
 

771. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

773. Mixed cropping helps :

 
 
 
 

774. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

776. Pinus gerardiana is :

 
 
 
 

777. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

780. What is the role of nitrifying bacteria?

 
 
 
 

781. The Rhizopus gametes are formed in:

 
 
 
 

782. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

784. 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?

 
 
 
 

785. Oswald Tippo’s classification is:

 
 
 
 

786. Aflatoxin is produced as a product in :

 
 
 
 

787. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Who among the following discovered virus?

 
 
 
 

792. Woody climbers are known as :

 
 
 
 

793. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

795. Protozoans are considered animals because these are:

 
 
 
 

796. Cryptogams include :

 
 
 
 

797. Viroids have:

 
 
 
 

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

 
 
 
 

799. To which class Riccia belongs :

 
 
 
 

800. The zygospore in Rhizopus on germination forms:

 
 
 
 

801. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

806. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

808. Bryophyta have a special character from other plants:

 
 
 
 

809. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

811. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

813. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

815. The phloem of vascular system of Cycas is :

 
 
 
 

816. Chief constituents of bordeaux mixture are :

 
 
 
 

817. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

819. TMV was isolated in crystalline form by:

 
 
 
 

820. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

822. Sleeping sickness disease in man is caused by:

 
 
 
 

823. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

825. Red rot of sugarcane is caused by :

 
 
 
 

826. Liverworts are included in :

 
 
 
 

827. In moss, conducting tissue is made up of

 
 
 
 

828. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

830. In Funaria :

 
 
 
 

831. The role of meiosis is for:

 
 
 
 

832. Enteric bacteria are those bacteria that live:

 
 
 
 

833. Which of the following are included in Tracheophyta?

 
 
 
 

834. Clostridium can:

 
 
 
 

835. Most primitive embryophytes are placed in :

 
 
 
 

836. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

838. The leaves of Funaria are :

 
 
 
 

839. In tracheophyta:

 
 
 
 

840. What is mycorrhiza?

 
 
 
 

841. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

843. Heterotrichous habit means :

 
 
 
 

844. First animal pathogenic virus was discovered by:

 
 
 
 

845. Infective part of virus was discovered by:

 
 
 
 

846. Aflatoxin is produced by:

 
 
 
 

847. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

849. Quarantine regulations are concerned with:

 
 
 
 

850. Ethylene oxide is widely used to:

 
 
 
 

851. Bacteria differ from viruses in being sensitive to:

 
 
 
 

852. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

854. The archegonia in Selaginella develop on:

 
 
 
 

855. Diphtheria is caused by:

 
 
 
 

856. Viruses have:

 
 
 
 

857. Siphonogamy is found in:

 
 
 
 

858. Endemic plants are characterised by their:

 
 
 
 

859. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

860. The development of sporangium in Selaginella is:

 
 
 
 

861. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. Cleavage polyembryony is found in :