Quiz_Random

1. Late blight of potato is caused by:

 
 
 
 

2. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. The chromosomal number in:

 
 
 
 

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

 
 
 
 

7. Which group of algae have an incipient nucleus?

 
 
 
 

8. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Smallpox is caused by:

 
 
 
 

12. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

14. Spores of which plants have chloroplast:

 
 
 
 

15. The chief characteristic of class Ascomycetes is:

 
 
 
 

16. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

18. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Which of the following statements is not correct?

 
 
 
 

22. Lichens show :

 
 
 
 

23. Most appropriate word for protozoans is:

 
 
 
 

24. Circular DNA is seen in:

 
 
 
 

25. Most common type of conjugation in Spirogyra is :

 
 
 
 

26. 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?

 
 
 
 

27. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Helotism word is used for the symbiosis between :

 
 
 
 

31. What is absent in Deuteromycetes?

 
 
 
 

32. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Cycas plant in appearance resembles :

 
 
 
 

38. 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:

 
 
 
 

39. Anoxygenic photosynthesis occurs in:

 
 
 
 

40. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Virus and bacteriophage are made-up of:

 
 
 
 

47. The upper region of moss capsule is :

 
 
 
 

48. The genetic material of poxvirus is:

 
 
 
 

49. Tautonyms are illegitimate in:

 
 
 
 

50. Most of the algae are :

 
 
 
 

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

 
 
 
 

52. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

57. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

62. Which of the following applies to Selaginella?

 
 
 
 

63. The tallest moss in the world is :

 
 
 
 

64. Rhizoids of Riccia are :

 
 
 
 

65.

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

 
 
 
 

67. To which country Antony van Leeuwenhoek belong?

 
 
 
 

68. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Vascular tissue is found in :

 
 
 
 

79. Transfusion tissue is present in the leaflet of:

 
 
 
 

80. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

88. In moss, peristomial teeth are:

 
 
 
 

89. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

91. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

93. Pasteur is famous for his:

 
 
 
 

94. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

96. Chemosynthetic bacteria are:

 
 
 
 

97. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

99. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. What is a vector?

 
 
 
 

104. Fruits are not found in Cycas because:

 
 
 
 

105. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

111. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

113. Usually, bacteria reproduce by:

 
 
 
 

114. Pollination in Pinus is :

 
 
 
 

115. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Woody climbers are known as :

 
 
 
 

119. Vegetative reproduction in Cycas is by means of :

 
 
 
 

120. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. Fruiting body of lichens is :

 
 
 
 

124. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

126. LSD is:

 
 
 
 

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

 
 
 
 

128. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

130. The role of meiosis is for:

 
 
 
 

131. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

135. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. The mode of nutrition of bacteria is usually:

 
 
 
 

139. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

147. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

149. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

154. Which among the following is a shrub?

 
 
 
 

155. The Rhizopus is:

 
 
 
 

156. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. A gill of Agaricus:

 
 
 
 

161. Embryophyta includes :

 
 
 
 

162. The source of litmus is :

 
 
 
 

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

 
 
 
 

164. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Climbers are found in genus:

 
 
 
 

168. Which organisms are the oldest life forms?

 
 
 
 

169. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

171. Total parasites belong to:

 
 
 
 

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

 
 
 
 

173. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

175. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

177. The order generally ends with:

 
 
 
 

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

 
 
 
 

179. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

185. Economic importance of bacteria lies in their being:

 
 
 
 

186. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

188. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

190. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

192. Heterocysts are found in :

 
 
 
 

193. Cycas revoluta is widely grown as :

 
 
 
 

194. Cryptogams include :

 
 
 
 

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

 
 
 
 

196. Infective part of virus was discovered by:

 
 
 
 

197. Pinus gerardiana is :

 
 
 
 

198. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Which have the largest antherozoid?

 
 
 
 

202. Bivalved siliceous shell or frustule occur in:

 
 
 
 

203. Which of the following is true for viruses?

 
 
 
 

204. Winged seeds are found in :

 
 
 
 

205. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

207. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

209. The sexual reproductive organs in Rhizopus are:

 
 
 
 

210. Bacteria were first discovered by:

 
 
 
 

211. Soil fertility is lost by the activities of:

 
 
 
 

212. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

214. Most resistant spore in bacteria is:

 
 
 
 

215. Bacteria which are spherical are called:

 
 
 
 

216. Which is a redwood tree?

 
 
 
 

217. Mycoplasma was discovered by:

 
 
 
 

218. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. Oswald Tippo’s classification was based on :

 
 
 
 

223. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

225. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

227. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

229. Gram stain is used to:

 
 
 
 

230. Club moss and Peat moss belong to:

 
 
 
 

231. Ovary is absent in :

 
 
 
 

232. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. Plasmids are:

 
 
 
 

236. Ethylene oxide is widely used to:

 
 
 
 

237. The sporangiophores in Rhizopus are:

 
 
 
 

238. Spermatophyta are characterized by producing:

 
 
 
 

239. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

241. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

243. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

249. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

251. Cellular slime mold is:

 
 
 
 

252. Which fixes atmospheric nitrogen?

 
 
 
 

253. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

254. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Spermatophyta are characterized by producing:

 
 
 
 

258. Lichens are indicators of :

 
 
 
 

259. Which of the following have a prokaryotic cell?

 
 
 
 

260. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

261. Which of the following is true for Selaginella?

 
 
 
 

262. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

264. Black rust of wheat is caused by:

 
 
 
 

265. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. Amoeba is a member of the phylum:

 
 
 
 

269. Cycas is:

 
 
 
 

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

 
 
 
 

271. Enzymes are absent in:

 
 
 
 

272. What is streptomycin?

 
 
 
 

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

 
 
 
 

274. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

276. Nitrogen-fixing bacteria may be located:

 
 
 
 

277. First animal pathogenic virus was discovered by:

 
 
 
 

278. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Multicellular and jacketed sex organs are found in :

 
 
 
 

282. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. Which of the following have algal zone?

 
 
 
 

286. Cyanophage is a virus that attacks:

 
 
 
 

287. Roots are absent in :

 
 
 
 

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

 
 
 
 

289. Banana bunchy top is caused by :

 
 
 
 

290. Lichens form the first community in

 
 
 
 

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

 
 
 
 

292. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

295. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

297. Photosynthetic bacteria have:

 
 
 
 

298. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. The Rhizopus gametes are formed in:

 
 
 
 

309. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

311. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

314. Ovules are not found enclosed in ovary in :

 
 
 
 

315. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

317. Cyathia is characterized by:

 
 
 
 

318. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

320. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

324. Fern prothallus is:

 
 
 
 

325. The zoospores of Ulothrix are :

 
 
 
 

326. Facultative parasite is:

 
 
 
 

327. Sexual reproduction of lichen is due to :

 
 
 
 

328. Number of capsomeres forming capsid of TMV is:

 
 
 
 

329. Which one of the following is a monocot?

 
 
 
 

330. Detailed study of bacteriophage was made by:

 
 
 
 

331. Which condition is found in Cycas?

 
 
 
 

332. Seeds are characteristically found in :

 
 
 
 

333. Fairy ring is the name given to:

 
 
 
 

334. Interferon is a:

 
 
 
 

335. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. The antherozoids of Funaria are :

 
 
 
 

339. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

344. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. The roots of Cycas are :

 
 
 
 

349. Penicillin is obtained from:

 
 
 
 

350. Mostly type of zygospore in Ulothrix is:

 
 
 
 

351. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. Water bloom is generally caused by :

 
 
 
 

356. In Pteris, the archegonia are present:

 
 
 
 

357. Small epidermal swellings due to infection are called :

 
 
 
 

358. 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?

 
 
 
 

359. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

361. The ascus of yeast contains:

 
 
 
 

362. The chloroplast of Chlamydomonas are:

 
 
 
 

363. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

365. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

367. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Who named prion?

 
 
 
 

371. The leaves of Funaria are :

 
 
 
 

372. What are Cyanobacteria?

 
 
 
 

373. The gametophyte of fern bears:

 
 
 
 

374. Placenta in fern is:

 
 
 
 

375. Which causes red tide?

 
 
 
 

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

 
 
 
 

377. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

378. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

380. Red rot of sugarcane is caused by :

 
 
 
 

381. Streptomycin is obtained from:

 
 
 
 

382. The development of Selaginella embryo is:

 
 
 
 

383. Viruses are commonly transmitted in plants through:

 
 
 
 

384. Which of the following lichens is harmful?

 
 
 
 

385. Cocci types of bacteria are:

 
 
 
 

386. The ferns are usually found:

 
 
 
 

387. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. Ginkgo biloba is a:

 
 
 
 

391. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Metulae are found in:

 
 
 
 

395. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. The middle sterile part of capsule is called:

 
 
 
 

399. The root nodules of leguminous plants contain:

 
 
 
 

400. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

402. Isomorphic type alternation of generation is found in:

 
 
 
 

403. Botulism is a:

 
 
 
 

404. Who among the following discovered virus?

 
 
 
 

405. Which of the following is sago palm?

 
 
 
 

406. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

408. In Funaria :

 
 
 
 

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

 
 
 
 

410. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

412. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

413. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. All algae have:

 
 
 
 

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

 
 
 
 

418. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

421. Mycoplasma is different from bacteria due to:

 
 
 
 

422. Spirogyra represents the :

 
 
 
 

423. Meiosis in Ulothrix takes place:

 
 
 
 

424. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

426. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

428. Rice, pea, potato are :

 
 
 
 

429. Asexual reproductive body of Volvox is called:

 
 
 
 

430. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

432. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

434. The spur of Pinus roxburghii has :

 
 
 
 

435. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

437. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

439. The central part of Funaria axis is :

 
 
 
 

440. In moss, stomata are found:

 
 
 
 

441. Cycas is :

 
 
 
 

442. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

443. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

445. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

447. The first to isolate a plant virus was:

 
 
 
 

448. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

450. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

453. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

455. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

457. The lambda phase is a:

 
 
 
 

458. Pasteurized milk is:

 
 
 
 

459. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

468. Which is a tautonym?

 
 
 
 

469. Lichen show :

 
 
 
 

470. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

475. TMV was isolated in crystalline form by:

 
 
 
 

476. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

478. Most primitive group of vascular plants are:

 
 
 
 

479. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. The archegonia in Selaginella develop on:

 
 
 
 

483. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

485. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. The gametophyte of fern is as:

 
 
 
 

490. Psilotum is:

 
 
 
 

491. Smut of maize is caused by :

 
 
 
 

492. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

494. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

501. Embryo formation is not known in :

 
 
 
 

502. The leaf of Cycas shows:

 
 
 
 

503. Diploxylic vascular bundles are found in:

 
 
 
 

504. Reproduction in Cycas takes place by :

 
 
 
 

505. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

507. The term stele was given by:

 
 
 
 

508. Most of the lichens are composed of :

 
 
 
 

509. The stele of Dryopteris is a:

 
 
 
 

510. Funaria is a Bryophyta because :

 
 
 
 

511. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. The gametophyte of moss has distinct phases :

 
 
 
 

517.

518.

519. NBG of Lucknow is now named as:

 
 
 
 

520. The sporophyte of Riccia is represented by :

 
 
 
 

521. Funaria is :

 
 
 
 

522. The sori in Dryopteris are found on:

 
 
 
 

523. Sleeping sickness disease in man is caused by:

 
 
 
 

524. Mycoplasma contains:

 
 
 
 

525. Vascular cryptogam is the term used for :

 
 
 
 

526. 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:

 
 
 
 

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

 
 
 
 

528. Most primitive embryophytes are placed in :

 
 
 
 

529. Fruits are not found in:

 
 
 
 

530. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. Pinus is:

 
 
 
 

535. In tracheophyta:

 
 
 
 

536. Etiology includes the study of :

 
 
 
 

537. Cell walls of Gram-positive bacteria contain:

 
 
 
 

538. Synzoospore is produced in:

 
 
 
 

539. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

544. Simple polyembryony is found in :

 
 
 
 

545. Which of the following does not contain chlorophyll?

 
 
 
 

546. Antibiotic has been extracted from :

 
 
 
 

547. Fruits are not found in :

 
 
 
 

548. Acellular slime mold is/are:

 
 
 
 

549. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

555. In a diplontic life cycle:

 
 
 
 

556. Which is an edible fungus?

 
 
 
 

557. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

562. Germination of the seed of Pinus is :

 
 
 
 

563. Viruses are considered to be:

 
 
 
 

564. Photoautotrophic bacteria have:

 
 
 
 

565. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

566. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. Heterosporous pteridophytes always form:

 
 
 
 

570. Bacteria growing on synthetic medium are called:

 
 
 
 

571. Each chloroplast in Spirogyra bears :

 
 
 
 

572. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

574. Reserve food in Euglena is:

 
 
 
 

575. How a fern differs from a moss?

 
 
 
 

576. 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?

 
 
 
 

577. The fungi used as food are:

 
 
 
 

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

 
 
 
 

579. Sexual reproduction in Rhizopus is by:

 
 
 
 

580. Pollination in Cycas takes place by :

 
 
 
 

581. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

583. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

588. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

590. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

592. The fungi that grow on wood are called:

 
 
 
 

593. Centric discoid form of diatom is:

 
 
 
 

594. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

596. In moss, calyptra is formed from:

 
 
 
 

597. In Gymnocarpeae the fruiting body is :

 
 
 
 

598. Aflatoxin is produced as a product in :

 
 
 
 

599. The fungi are usually:

 
 
 
 

600. Water-net is the name of:

 
 
 
 

601. The tree fern is:

 
 
 
 

602. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. Generic name of mango is:

 
 
 
 

606. Facultative saprophyte is:

 
 
 
 

607. Bacteriophages have been used as:

 
 
 
 

608. The megaspore of Selaginella on germination produces:

 
 
 
 

609. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

611. The microsporophylls on the cone of Cycas are :

 
 
 
 

612. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

614. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Late blight of potato is caused by :

 
 
 
 

620. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

622. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

624. Select the wrong statement:

 
 
 
 

625. Lichens reproduce by :

 
 
 
 

626. Viruses have:

 
 
 
 

627. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

629. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. The most primitive vascular plants is:

 
 
 
 

633. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

639. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

641. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

643. How is moss different from fern?

 
 
 
 

644. Streptomyces falls under:

 
 
 
 

645. Protists which are diploid reproduce sexually by:

 
 
 
 

646. 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?

 
 
 
 

647. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

649. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

651. 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:

 
 
 
 

652. Heterotrichous habit means :

 
 
 
 

653. Cycas is similar to a mustard plant :

 
 
 
 

654. Protozoans are considered animals because these are:

 
 
 
 

655. Cap cells are found in the filament of:

 
 
 
 

656. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

659. Who discovered cyanophages?

 
 
 
 

660. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

661. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

662. Cycas is different from mango in :

 
 
 
 

663. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

666. The truncated cone of HIV consists of:

 
 
 
 

667. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. Viroids have:

 
 
 
 

671. Which is an exception to cell theory?

 
 
 
 

672. Lichens are the indicator of pollution :

 
 
 
 

673. Fern plants are:

 
 
 
 

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

 
 
 
 

675. Liverworts are included in :

 
 
 
 

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

 
 
 
 

677. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

679. In moss, reduction division occurs in :

 
 
 
 

680. Longest known virus is:

 
 
 
 

681. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

683.

 

684. The sporophyte of Riccia is :

 
 
 
 

685. The orders generally have the uniform endings:

 
 
 
 

686. Sometimes the bacterial cell is enclosed in:

 
 
 
 

687. Select the wrong statement:

 
 
 
 

688. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

690. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

692. Bacteria differ from viruses in being sensitive to:

 
 
 
 

693. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

695. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. Which is not true for Escherichia coli?

 
 
 
 

706. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

708. Which of the following are absent in Mycoplasma?

 
 
 
 

709. Rhizophore of Selaginella is:

 
 
 
 

710. Saccharomyces is used in:

 
 
 
 

711. The phloem of vascular system of Cycas is :

 
 
 
 

712. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

715. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

717. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

719. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

721. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

723. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

725. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

727. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

729. Gymnosperms could also be called as:

 
 
 
 

730. The prothallus of fern represents the plant:

 
 
 
 

731. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

735. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

737. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

739. . Tapetum develops in:

 
 
 
 

740. The chief characteristic of bryophyta is that :

 
 
 
 

741. The flagella of Chlamydomonas are:

 
 
 
 

742. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Mixed cropping helps :

 
 
 
 

746. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

748. 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:

 
 
 
 

749. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. Spirogyra differs from moss protonema in having :

 
 
 
 

753. Indusium in Dryopteris is:

 
 
 
 

754. Early blight of potato is caused by:

 
 
 
 

755. Botulinum toxin effects:

 
 
 
 

756. Majority of lichens are :

 
 
 
 

757. Nitrifying bacteria play an important role by converting:

 
 
 
 

758. Antibiotics cure the disease by:

 
 
 
 

759. Ectocarpus produces:

 
 
 
 

760. Selaginella differs from Moss in having:

 
 
 
 

761. In a bacteriophage, DNA is present in:

 
 
 
 

762. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

764. Embryophyta includes:

 
 
 
 

765. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

766. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

769. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

771. The spermatozoids of Cycas are :

 
 
 
 

772. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Lichens are ecologically important because :

 
 
 
 

776. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

778. Some biologists have used the term Mycetozoa for:

 
 
 
 

779. Nannandria are:

 
 
 
 

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

 
 
 
 

781. Where does meiosis occur in yeast?

 
 
 
 

782. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

783. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Fern phloem lacks:

 
 
 
 

788. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

789. Funaria is :

 
 
 
 

790. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. In Cycas which structure is equivalent to stamen?

 
 
 
 

795. Who discovered streptomycin?

 
 
 
 

796. Chemosynthetic bacteria are:

 
 
 
 

797. In Cycas:

 
 
 
 

798. Which class of Protozoa includes all parasitic forms?

 
 
 
 

799. The largest alga is:

 
 
 
 

800. Yeast grows more rapidly in:

 
 
 
 

801. Virion refers to:

 
 
 
 

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

 
 
 
 

803. The photosynthetic protists are:

 
 
 
 

804. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

806. The disease symptom necrosis refers to :

 
 
 
 

807. Pollination drop is:

 
 
 
 

808. Which of the following statement is correct?

 
 
 
 

809. Why is Cycas called a living fossil?

 
 
 
 

810. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

812. The DNA of E coli is:

 
 
 
 

813. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. Clostridium can:

 
 
 
 

818. Black rust of wheat is caused by:

 
 
 
 

819. Linnaeus is credited with introducing:

 
 
 
 

820. To which class Riccia belongs :

 
 
 
 

821. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

823. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

824. Meristele of fern is:

 
 
 
 

825. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

829. The two conjugating gametangia of Rhizopus are:

 
 
 
 

830. Ovules are not found enclosed in ovary of:

 
 
 
 

831. E coli is a:

 
 
 
 

832. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

833. Black rust of wheat is caused by:

 
 
 
 

834. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

836. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

838. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

841. Ovary is absent in:

 
 
 
 

842. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

851. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

856. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

857. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

859. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Discovery of penicillin was based on:

 
 
 
 

864. Rigid cell wall and embryo formation characterise kingdom :