Quiz_Random

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

 
 
 
 

2. Most of the algae are :

 
 
 
 

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

 
 
 
 

4. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

6. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

8. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

10. Viruses are commonly transmitted in plants through:

 
 
 
 

11. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

16. The word “sea weeds” is used for:

 
 
 
 

17. Which have the largest antherozoid?

 
 
 
 

18. Placenta in fern is:

 
 
 
 

19. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

21. Yeast grows more rapidly in:

 
 
 
 

22. The upper region of moss capsule is :

 
 
 
 

23. Wine turns sour because of:

 
 
 
 

24. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

26. Male gametes in Dryopteris are:

 
 
 
 

27. Circular DNA is seen in:

 
 
 
 

28. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

30. The mode of nutrition of bacteria is usually:

 
 
 
 

31. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. The zoospores of Ulothrix are :

 
 
 
 

35. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Choose the correct statement about Spirogyra:

 
 
 
 

42. All algae have:

 
 
 
 

43. Fruits are not found in :

 
 
 
 

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

 
 
 
 

45. Mycoplasma was discovered by:

 
 
 
 

46. 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?

 
 
 
 

47. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

49. Fairy ring is the name given to:

 
 
 
 

50. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Mucilaginous canals in Cycas are found in :

 
 
 
 

54. Cycas is similar to a mustard plant :

 
 
 
 

55. Cryptogams include :

 
 
 
 

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

 
 
 
 

57. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

58. The teeth of peristome of Funaria are :

 
 
 
 

59. Citrus canker is caused by:

 
 
 
 

60. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Polystelic condition is found in:

 
 
 
 

65. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. John Hutchinson divided dicots into two divisions:

 
 
 
 

70. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

72. The mycelium of Rhizopus is:

 
 
 
 

73. Mixed cropping helps :

 
 
 
 

74. The similarity between cyanobacteria and bacteria:

 
 
 
 

75. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

77. Fruits are not found in Cycas because:

 
 
 
 

78. Male gametophyte of Selaginella is found:

 
 
 
 

79. The male gametes of Pinus are :

 
 
 
 

80. The sori in Dryopteris are found on:

 
 
 
 

81. 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:

 
 
 
 

82. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

84. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

86. 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:

 
 
 
 

87. Ulothrix produces :

 
 
 
 

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

 
 
 
 

89. A gill of Agaricus:

 
 
 
 

90. The gametophyte produced by apospory is :

 
 
 
 

91. Interferon is a:

 
 
 
 

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

 
 
 
 

93. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

95. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

97. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

99. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

101. The archegonia of Selaginella are differentiated by:

 
 
 
 

102. The smallest unit of classification is:

 
 
 
 

103. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

105. Lichens reproduce by :

 
 
 
 

106. Chief constituents of bordeaux mixture are :

 
 
 
 

107. The truncated cone of HIV consists of:

 
 
 
 

108. Transfusion tissue is present in the leaflet of:

 
 
 
 

109. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

111. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

113. The archegonia in Selaginella develop on:

 
 
 
 

114. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

116. Halophiles are the bacteria that require for growth:

 
 
 
 

117. Acetobacter is useful in:

 
 
 
 

118.

119. Which is a tautonym?

 
 
 
 

120. Which class of Protozoa includes all parasitic forms?

 
 
 
 

121. Infective part of virus was discovered by:

 
 
 
 

122. Bryophyta have been placed in cryptogams because:

 
 
 
 

123. Rhizophore of Selaginella is:

 
 
 
 

124. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Among the algae kelps are :

 
 
 
 

141. Fertility of the soil is increased by:

 
 
 
 

142. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

144. Lichens are ecologically important because :

 
 
 
 

145. Seeds are characteristically found in:

 
 
 
 

146. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

148. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Synzoospore is produced in:

 
 
 
 

152. Which of the following is true for Selaginella?

 
 
 
 

153. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

159. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

160. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Which of the following shows heterotrichous habit?

 
 
 
 

165. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

168. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. E coli is a:

 
 
 
 

172. The source of litmus is :

 
 
 
 

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

 
 
 
 

174. Cycas is:

 
 
 
 

175. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

177. Vascular tissue is found in :

 
 
 
 

178. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. The chief characteristic of class Ascomycetes is:

 
 
 
 

182. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

184. Some bacteria cannot be killed easily because of:

 
 
 
 

185. Mycoplasma is different from bacteria due to:

 
 
 
 

186. Cycas is different from mango in :

 
 
 
 

187. Pneumonia is caused by:

 
 
 
 

188. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. 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:

 
 
 
 

196. The root nodules of leguminous plants contain:

 
 
 
 

197. The sporangiophores in Rhizopus are:

 
 
 
 

198. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

200. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. Gram stain is used to:

 
 
 
 

204. The smallest bacterium is:

 
 
 
 

205. Soil fertility is lost by the activities of:

 
 
 
 

206. 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:

 
 
 
 

207. Linnaeus is credited with introducing:

 
 
 
 

208. Most resistant spore in bacteria is:

 
 
 
 

209. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

211. Which of the following applies to Selaginella?

 
 
 
 

212. Rice, pea, potato are :

 
 
 
 

213. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

218. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

225. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

227. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

229. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

231. The gametophyte of moss has distinct phases :

 
 
 
 

232. The flagella of Chlamydomonas are:

 
 
 
 

233. Selaginella differs from Moss in having:

 
 
 
 

234. Bacteriophage consists of:

 
 
 
 

235. The most important property of yeast is:

 
 
 
 

236. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. Pinus is:

 
 
 
 

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

 
 
 
 

241. Virion refers to:

 
 
 
 

242. Funaria are commonly found :

 
 
 
 

243. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

244. Heterocysts are found in :

 
 
 
 

245. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

249. Water-net is the name of:

 
 
 
 

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

 
 
 
 

251. Viruses have:

 
 
 
 

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

 
 
 
 

253. Sleeping sickness disease in man is caused by:

 
 
 
 

254. Detailed study of bacteriophage was made by:

 
 
 
 

255. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Pinus microsporophyll bears:

 
 
 
 

266. In Gymnosperms endosperm is a:

 
 
 
 

267. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Ovules are not found enclosed in ovary in :

 
 
 
 

271. 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:

 
 
 
 

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

 
 
 
 

273. Gymnosperms could also be called as:

 
 
 
 

274. 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?

 
 
 
 

275. Gametophyte is the main plant body in :

 
 
 
 

276. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. Which of the following have algal zone?

 
 
 
 

286. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. True sexuality is not found in:

 
 
 
 

290. One of the distinctive feature of Spirogyra is :

 
 
 
 

291. The sporangia of Selaginella are attached:

 
 
 
 

292. Spirogyra represents the :

 
 
 
 

293. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. Iodine is obtained from :

 
 
 
 

298. Generic name of mango is:

 
 
 
 

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

 
 
 
 

300. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

302. Antibiotics cure the disease by:

 
 
 
 

303. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

305. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

307. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

309. The fungi used as food are:

 
 
 
 

310. In a bacteriophage, DNA is present in:

 
 
 
 

311. The sexual reproductive organs in Rhizopus are:

 
 
 
 

312. Bacteria are placed under:

 
 
 
 

313. Liverworts are included in :

 
 
 
 

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

 
 
 
 

315. Green plants are classified as:

 
 
 
 

316. Which is a fungicide?

 
 
 
 

317. Pollination drop is:

 
 
 
 

318. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

319. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

321. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

323. Cycas is :

 
 
 
 

324. An alga which is rich in proteins:

 
 
 
 

325. Ergot of rye is caused by:

 
 
 
 

326. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

331. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

333. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

335. To which class Riccia belongs :

 
 
 
 

336. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

344. Which of the following are included in Tracheophyta?

 
 
 
 

345. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

347. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

351. Most of the lichens are composed of :

 
 
 
 

352. Vascular cryptogam is the term used for :

 
 
 
 

353. The nucleus of bacteria is:

 
 
 
 

354. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. Select the wrong statement:

 
 
 
 

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

 
 
 
 

359. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

361. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

368. Mycoplasma are:

 
 
 
 

369. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

371. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. The central part of Funaria axis is :

 
 
 
 

379. Banana bunchy top is caused by :

 
 
 
 

380. What are plasmids?

 
 
 
 

381. Mostly type of zygospore in Ulothrix is:

 
 
 
 

382. Spermatophyta are characterized by producing:

 
 
 
 

383. In moss, sporogenous tissue arises from:

 
 
 
 

384. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. The spur of Pinus roxburghii has :

 
 
 
 

388. In tracheophyta:

 
 
 
 

389. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Woody climbers are known as :

 
 
 
 

394. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. The fungi that grow on wood are called:

 
 
 
 

400. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

402. Ethylene oxide is widely used to:

 
 
 
 

403. The plants of Funaria grow :

 
 
 
 

404. Bacteria are found everywhere, except:

 
 
 
 

405. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

407. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

415. White rust of crucifers is caused by:

 
 
 
 

416. Diphtheria is caused by:

 
 
 
 

417. Ovary is absent in:

 
 
 
 

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

 
 
 
 

419. Which is an exception to cell theory?

 
 
 
 

420. In moss, sporophyte is formed on:

 
 
 
 

421. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

423. Viruses are considered to be:

 
 
 
 

424. Bacteria are considered to be plants because they:

 
 
 
 

425. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

427. Red rot of sugarcane is caused by :

 
 
 
 

428. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

431. Aflatoxin is produced by:

 
 
 
 

432. Funaria is :

 
 
 
 

433. Amoeba is a member of the phylum:

 
 
 
 

434. Lichens form the first community in

 
 
 
 

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

 
 
 
 

436. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

437. The antibiotic is obtained from:

 
 
 
 

438. The chromosomal number in:

 
 
 
 

439. Heterospory is the production of:

 
 
 
 

440. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

445. The zygospore in Rhizopus on germination forms:

 
 
 
 

446. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

447. The largest alga is:

 
 
 
 

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

 
 
 
 

449. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

451. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Heterospory and ligulate leaves are a feature of:

 
 
 
 

455. Reproduction in Rhizopus is:

 
 
 
 

456. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

458. Coenogamete is found in:

 
 
 
 

459. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

464. Which of the following lichens is harmful?

 
 
 
 

465. Which is not true for Escherichia coli?

 
 
 
 

466. Which part of Riccia bears nurse cells?

 
 
 
 

467. Winged pollen grains are found in :

 
 
 
 

468. Spirogyra differs from moss protonema in having :

 
 
 
 

469. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

471. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

473. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

476. Photosynthetic bacteria have:

 
 
 
 

477. Redness of red sea is due to :

 
 
 
 

478. Longest known virus is:

 
 
 
 

479. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

481. 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?

 
 
 
 

482. Which is a gametophytic tissue?

 
 
 
 

483. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

485. Pythium debaryanum is the causative agent of:

 
 
 
 

486. The antherozoids of Funaria are :

 
 
 
 

487. Photosynthetic protists belong to:

 
 
 
 

488. Meristele of fern is:

 
 
 
 

489. Which fixes atmospheric nitrogen?

 
 
 
 

490. Downy mildew disease is caused by :

 
 
 
 

491. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

493.

 

494. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

496. In a diplontic life cycle:

 
 
 
 

497. Ovules are not found enclosed in ovary in :

 
 
 
 

498. Which one of the following statement is wrong?

 
 
 
 

499. Which of the following are absent in Mycoplasma?

 
 
 
 

500. The fern plant is:

 
 
 
 

501. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

503. Which is not found in bacteria?

 
 
 
 

504. Cycas revoluta is widely grown as :

 
 
 
 

505. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. To which country Antony van Leeuwenhoek belong?

 
 
 
 

511. In Gymnocarpeae the fruiting body is :

 
 
 
 

512. What is the role of nitrifying bacteria?

 
 
 
 

513. The fungi are usually:

 
 
 
 

514. Enteric bacteria are those bacteria that live:

 
 
 
 

515. Milk is converted to curd by:

 
 
 
 

516. Ovary is absent in :

 
 
 
 

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

 
 
 
 

518. Cellular slime mold is:

 
 
 
 

519. Fern plants are:

 
 
 
 

520. The two conjugating gametangia of Rhizopus are:

 
 
 
 

521. Mycoplasma are sensitive to:

 
 
 
 

522. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

524. Which lichen is called Reindeer moss?

 
 
 
 

525. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

527. Lichen show :

 
 
 
 

528. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

530. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

532. Proembryo in Pinus is :

 
 
 
 

533. Which of the following is a heterosporous pteridophyte?

 
 
 
 

534. Protists which are diploid reproduce sexually by:

 
 
 
 

535. Helotism word is used for the symbiosis between :

 
 
 
 

536. The orders generally have the uniform endings:

 
 
 
 

537. Protistan algae obtain their food as:

 
 
 
 

538. Select the correct statement: (NEET 2016)

 
 
 
 

539. Oswald Tippo’s classification is:

 
 
 
 

540. In Pteris, the roots are:

 
 
 
 

541. The first to isolate a plant virus was:

 
 
 
 

542. Cyathia is characterized by:

 
 
 
 

543. In Cycas:

 
 
 
 

544. Winged seeds are found in :

 
 
 
 

545. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

547. Which one of the following is a monocot?

 
 
 
 

548. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

550. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

552. Aflatoxin is produced as a product in :

 
 
 
 

553. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

555. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. LSD is:

 
 
 
 

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

 
 
 
 

560. Acellular slime mold is/are:

 
 
 
 

561. What is a vector?

 
 
 
 

562. Rhizopus and yeast are usually:

 
 
 
 

563. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

565. Pasteurization of milk involves heating for:

 
 
 
 

566. The group algae possesses representatives belonging to kingdom:

 
 
 
 

567. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

569. Cycas plant in appearance resembles :

 
 
 
 

570. Triple antigen injection or vaccine are for:

 
 
 
 

571. Which condition is found in Cycas?

 
 
 
 

572. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

574. Viroids have:

 
 
 
 

575.

576. Most primitive embryophytes are placed in:

 
 
 
 

577. Fruiting body of lichens is :

 
 
 
 

578. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

581. Which group of algae have an incipient nucleus?

 
 
 
 

582. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

584. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. Nitrogen-fixing bacteria may be located:

 
 
 
 

588. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

590. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. In Pteris, the archegonia are present:

 
 
 
 

598. The chloroplast in Ulothrix is :

 
 
 
 

599. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

601. In moss, reduction division occurs in :

 
 
 
 

602. Cell walls of Gram-positive bacteria contain:

 
 
 
 

603. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

605. Azolla and Salvinia both are:

 
 
 
 

606. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Bacteriophages have been used as:

 
 
 
 

610. Who named prion?

 
 
 
 

611. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

621. Fruits are not found in:

 
 
 
 

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

 
 
 
 

623. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. . Tapetum develops in:

 
 
 
 

627. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. Vegetative reproduction in Cycas is by means of :

 
 
 
 

631. Pseudomycelium is found in:

 
 
 
 

632. Select the wrong statement:

 
 
 
 

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

 
 
 
 

634. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

635. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

637. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

639. Spores of which plants have chloroplast:

 
 
 
 

640. Red rot of sugarcane is caused by :

 
 
 
 

641. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

643. The chief characteristic of bryophyta is that :

 
 
 
 

644. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

646. Fern prothallus is:

 
 
 
 

647. Fern prothallus produces:

 
 
 
 

648. 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?

 
 
 
 

649. The alga, Spirogyra are found in :

 
 
 
 

650. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653. Methanogens belong to:

 
 
 
 

654. The young leaves of Cycas have :

 
 
 
 

655. The lichens growing on rocks are called :

 
 
 
 

656. Facultative parasite is:

 
 
 
 

657. The sporophyte of Riccia is represented by :

 
 
 
 

658. Reserve food in Euglena is:

 
 
 
 

659. TMV was isolated in crystalline form by:

 
 
 
 

660. Citrus canker is caused by :

 
 
 
 

661. In moss, calyptra is formed from:

 
 
 
 

662. Smallpox is caused by:

 
 
 
 

663. Cocci types of bacteria are:

 
 
 
 

664. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

666. Meiosis in Ulothrix takes place:

 
 
 
 

667. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. The gametophyte of fern bears:

 
 
 
 

674. Centric discoid form of diatom is:

 
 
 
 

675. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. In angiosperms double fertilization represents:

 
 
 
 

680. Who discovered cyanophages?

 
 
 
 

681. Lichens are pioneers of vegetation in a :

 
 
 
 

682. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Clostridium can:

 
 
 
 

687. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

689. The seedless plants which possess vascular tissues are:

 
 
 
 

690. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

698. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

710. Water-borne bacterial diseases are:

 
 
 
 

711. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

712. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

717. The phloem of vascular system of Cycas is :

 
 
 
 

718. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Genetic material of TMV is:

 
 
 
 

723. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

724. Pollination in Cycas takes place by :

 
 
 
 

725. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

727. Saccharomyces is well known for:

 
 
 
 

728. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

730. What is absent in Deuteromycetes?

 
 
 
 

731. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

733. Lichens reproduce by :

 
 
 
 

734. All protozoans possess:

 
 
 
 

735. Who discovered streptomycin?

 
 
 
 

736. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

738. Which among the following is a shrub?

 
 
 
 

739. Which of the following is true for viruses?

 
 
 
 

740. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

742. In Funaria, calyptra is derived from :

 
 
 
 

743. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

745. What are Cyanobacteria?

 
 
 
 

746. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. In Herpes virus DNA is:

 
 
 
 

750. Vascular cryptogams is the term used for:

 
 
 
 

751. Economic importance of bacteria lies in their being:

 
 
 
 

752. The spermatozoids of Cycas are :

 
 
 
 

753. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

755. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

760. Funaria can be differentiated from Cycas :

 
 
 
 

761. Most primitive group of vascular plants are:

 
 
 
 

762. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

764. Mycoplasmas are not viruses in nature because:

 
 
 
 

765. Which of the following statements is not correct?

 
 
 
 

766. Heterosporous pteridophytes always form:

 
 
 
 

767. In Cycas which structure is equivalent to stamen?

 
 
 
 

768. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. How is moss different from fern?

 
 
 
 

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

 
 
 
 

773. The Rhizopus is:

 
 
 
 

774. Which of the following statement is correct?

 
 
 
 

775. Which of the following does not contain chlorophyll?

 
 
 
 

776. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

778. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

780. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Who among the following discovered virus?

 
 
 
 

785. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. Agar-agar is obtained from:

 
 
 
 

791. Embryophyta includes :

 
 
 
 

792. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

794. Ergot is obtained from :

 
 
 
 

795. Which statement is wrong in regard to bacteria?

 
 
 
 

796. Some diseases caused by bacteria are:

 
 
 
 

797. In binomial system most of the words are:

 
 
 
 

798. Rhizopus belongs to:

 
 
 
 

799. Pasteur is famous for his:

 
 
 
 

800. Pteridophyta are also called:

 
 
 
 

801.

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

 
 
 
 

803. The genetic material of poxvirus is:

 
 
 
 

804. Desired type of Cycas can be grown by:

 
 
 
 

805. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

807. The most primitive vascular plants is:

 
 
 
 

808. In Funaria :

 
 
 
 

809. 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:

 
 
 
 

810. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

813. The sporangium of fern contains nearly:

 
 
 
 

814. The fungi are mostly:

 
 
 
 

815. Which of the following have a prokaryotic cell?

 
 
 
 

816. Streptomyces falls under:

 
 
 
 

817. Lichens show :

 
 
 
 

818. Isomorphic type alternation of generation is found in:

 
 
 
 

819. The rhizoids of Funaria are :

 
 
 
 

820. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

828. Club moss is the common name of :

 
 
 
 

829. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

834. Simple polyembryony is found in :

 
 
 
 

835. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

837. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

839. The coralloid roots are :

 
 
 
 

840. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. Metulae are found in:

 
 
 
 

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

 
 
 
 

848. Parmelia belongs to :

 
 
 
 

849. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

851. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

853. Number of capsomeres forming capsid of TMV is:

 
 
 
 

854. The term stele was given by:

 
 
 
 

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

 
 
 
 

856. Tautonyms are illegitimate in:

 
 
 
 

857. Yeast is a source of:

 
 
 
 

858. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

861. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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