Quiz_Random

1. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

3. In Cycas which structure is equivalent to stamen?

 
 
 
 

4. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. The photosynthetic protists are:

 
 
 
 

12. Which is a tautonym?

 
 
 
 

13. Simple polyembryony is found in :

 
 
 
 

14. Germination of the seed of Pinus is :

 
 
 
 

15. Heterosporous pteridophytes always form:

 
 
 
 

16. Pasteurized milk is:

 
 
 
 

17. 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:

 
 
 
 

18. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. The sporangia of Selaginella are attached:

 
 
 
 

22. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

23. In binomial system most of the words are:

 
 
 
 

24. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

26. Infective part of virus was discovered by:

 
 
 
 

27. Viruses are considered to be:

 
 
 
 

28. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

30. Late blight of potato is caused by:

 
 
 
 

31. Which of the following is sago palm?

 
 
 
 

32. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

34. What is the role of nitrifying bacteria?

 
 
 
 

35. Select the wrong statement:

 
 
 
 

36. Red rot of sugarcane is caused by :

 
 
 
 

37. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

39. Most primitive embryophytes are placed in:

 
 
 
 

40. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

45. Special feature of pollen grains of Pinus is :

 
 
 
 

46. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

48. The mycelium of Rhizopus is:

 
 
 
 

49. In Gymnosperms endosperm is a:

 
 
 
 

50. Cap cells are found in the filament of:

 
 
 
 

51. 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:

 
 
 
 

52. Nitrifying bacteria play an important role by converting:

 
 
 
 

53. Pollination drop is:

 
 
 
 

54. Indusium in Dryopteris is:

 
 
 
 

55. Antibiotic has been extracted from :

 
 
 
 

56. The fungi are mostly:

 
 
 
 

57. Methanogens belong to:

 
 
 
 

58. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Lichens reproduce by :

 
 
 
 

64. The chief characteristic of bryophyta is that :

 
 
 
 

65. The disease symptom necrosis refers to :

 
 
 
 

66. In moss, reduction division occurs in :

 
 
 
 

67. Citrus canker is caused by :

 
 
 
 

68. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Pollination in Cycas takes place by :

 
 
 
 

72. Common phycobiont in a lichen is :

 
 
 
 

73. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Choose the correct statement about Spirogyra:

 
 
 
 

77. Late blight of potato is caused by :

 
 
 
 

78. Which of the following is a parasitic algae?

 
 
 
 

79. Streptomyces falls under:

 
 
 
 

80. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

82. The tallest moss in the world is :

 
 
 
 

83. The spur of Pinus roxburghii has :

 
 
 
 

84. Spermatophyta are characterized by producing:

 
 
 
 

85. Viruses have:

 
 
 
 

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

 
 
 
 

87. Clostridium can:

 
 
 
 

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

 
 
 
 

89. Placenta in fern is:

 
 
 
 

90. Funaria is :

 
 
 
 

91. Plasmids are:

 
 
 
 

92. Pinus is:

 
 
 
 

93. Which fixes atmospheric nitrogen?

 
 
 
 

94. Cyanophage is a virus that attacks:

 
 
 
 

95. The fern plant is:

 
 
 
 

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

 
 
 
 

97. Club moss and Peat moss belong to:

 
 
 
 

98. True sexuality is not found in:

 
 
 
 

99. Roots are absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

114. White rust of crucifers is caused by:

 
 
 
 

115. The tree fern is:

 
 
 
 

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

 
 
 
 

117. Citrus canker is caused by:

 
 
 
 

118. Etiology includes the study of :

 
 
 
 

119. Botulinum toxin effects:

 
 
 
 

120. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

122. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

124. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Water-borne bacterial diseases are:

 
 
 
 

138. Downy mildew disease is caused by :

 
 
 
 

139. In moss, calyptra is formed from:

 
 
 
 

140. Lichens are indicators of :

 
 
 
 

141. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

143. Ergot of rye is caused by:

 
 
 
 

144. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

145. Chemosynthetic bacteria are:

 
 
 
 

146. The group algae possesses representatives belonging to kingdom:

 
 
 
 

147. Disease resistant plant varieties can be produced by :

 
 
 
 

148. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Linnaeus is credited with introducing:

 
 
 
 

153. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

155. Fern plants are:

 
 
 
 

156. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

159. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

161. In Cycas the fertilization is:

 
 
 
 

162. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

164. 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:

 
 
 
 

165. Triple antigen injection or vaccine are for:

 
 
 
 

166. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

172. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

175. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

177. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Bacteria are placed under:

 
 
 
 

184. In Funaria, calyptra is derived from :

 
 
 
 

185. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

187. Halophiles are the bacteria that require for growth:

 
 
 
 

188. All protozoans possess:

 
 
 
 

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

 
 
 
 

190. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

192. 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?

 
 
 
 

193. The fungi used as food are:

 
 
 
 

194. Penicillin was discovered by:

 
 
 
 

195. In Gymnocarpeae the fruiting body is :

 
 
 
 

196. Protists which are diploid reproduce sexually by:

 
 
 
 

197. The lambda phase is a:

 
 
 
 

198. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. Selaginella differs from Moss in having:

 
 
 
 

203. Ovules are not found enclosed in ovary of:

 
 
 
 

204. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

208. Meristele of fern is:

 
 
 
 

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

 
 
 
 

210. Azolla growing in paddy fields helps in:

 
 
 
 

211. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

213.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Who named prion?

 
 
 
 

218. Viroids have:

 
 
 
 

219. TMV was isolated in crystalline form by:

 
 
 
 

220. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

225. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

227. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

229. Fern prothallus produces:

 
 
 
 

230. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

232. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235. The coralloid roots are :

 
 
 
 

236. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

238. Fruits are not found in :

 
 
 
 

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

 
 
 
 

240. Embryophyta includes :

 
 
 
 

241. Heterocysts are found in :

 
 
 
 

242. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. Cyathia is characterized by:

 
 
 
 

248. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

254. The chloroplast of Chlamydomonas are:

 
 
 
 

255. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

257. The gametophyte of fern is as:

 
 
 
 

258. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

260. How a fern differs from a moss?

 
 
 
 

261. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

263. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. The development of sporangium in Selaginella is:

 
 
 
 

267. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

269. Total parasites belong to:

 
 
 
 

270. Viruses are commonly transmitted in plants through:

 
 
 
 

271. Fern prothallus is:

 
 
 
 

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

 
 
 
 

273. Lichen show :

 
 
 
 

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

 
 
 
 

275. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. 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:

 
 
 
 

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

 
 
 
 

280. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

286. The leaves of Funaria are :

 
 
 
 

287. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

289. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

290. Fruits are not found in:

 
 
 
 

291. 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:

 
 
 
 

292. To which class Riccia belongs :

 
 
 
 

293. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. Helotism word is used for the symbiosis between :

 
 
 
 

297. Proembryo in Pinus is :

 
 
 
 

298. The upper region of moss capsule is :

 
 
 
 

299. Which is a fungicide?

 
 
 
 

300. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

302. Bentham and Hooker placed gymnosperms:

 
 
 
 

303. The fungi that grow on wood are called:

 
 
 
 

304. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

306. Sexual reproduction in Rhizopus is by:

 
 
 
 

307. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

309. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

311. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

313. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

315. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

318. Which is an edible fungus?

 
 
 
 

319. Zoogametes are not found in:

 
 
 
 

320. Sexual reproduction of lichen is due to :

 
 
 
 

321. The chromosomal number in:

 
 
 
 

322. Which one of the following statement is wrong?

 
 
 
 

323. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

325. Black rust of wheat is caused by:

 
 
 
 

326. The leafy fern plant represents the:

 
 
 
 

327. In moss, stomata are found:

 
 
 
 

328. The megaspore of Selaginella on germination produces:

 
 
 
 

329. Mycoplasma contains:

 
 
 
 

330. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

333. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. Generic name of mango is:

 
 
 
 

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

 
 
 
 

341. Ovary is absent in :

 
 
 
 

342. Sporophyte of fern is:

 
 
 
 

343. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

345. The DNA of E coli is:

 
 
 
 

346. Which of the following applies to Selaginella?

 
 
 
 

347. Vegetative reproduction in Cycas is by means of :

 
 
 
 

348. Sporophyte of Funaria is :

 
 
 
 

349. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

354. Smallpox is caused by:

 
 
 
 

355. Which lichen is called Reindeer moss?

 
 
 
 

356. Most appropriate word for protozoans is:

 
 
 
 

357. Pseudomycelium is found in:

 
 
 
 

358. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

360. Saccharomyces is well known for:

 
 
 
 

361. Number of capsomeres forming capsid of TMV is:

 
 
 
 

362. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

364. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

366. Funaria is :

 
 
 
 

367. The largest known bacterium is:

 
 
 
 

368. Diphtheria is caused by:

 
 
 
 

369. The ascus of yeast contains:

 
 
 
 

370. Little leaf disease of Brinjal is caused by:

 
 
 
 

371. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

372. The orders generally have the uniform endings:

 
 
 
 

373. In Pteris, the archegonia are present:

 
 
 
 

374. Facultative saprophyte is:

 
 
 
 

375. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

378. Detailed study of bacteriophage was made by:

 
 
 
 

379. Spirogyra represents the :

 
 
 
 

380. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

382. The smallest bacterium is:

 
 
 
 

383. Iodine is obtained from :

 
 
 
 

384. In a bacteriophage, DNA is present in:

 
 
 
 

385. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

387. What are plasmids?

 
 
 
 

388. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

390. Chief constituents of bordeaux mixture are :

 
 
 
 

391. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

393. Which is an exception to cell theory?

 
 
 
 

394. How is moss different from fern?

 
 
 
 

395. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. A gill of Agaricus:

 
 
 
 

399. Funaria are commonly found :

 
 
 
 

400. The vascular bundles of Cycas stem are :

 
 
 
 

401. Lichens reproduce by :

 
 
 
 

402. Ginkgo biloba is a:

 
 
 
 

403. Iodine is obtained from:

 
 
 
 

404. In moss, peristomial teeth are:

 
 
 
 

405. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

407. Cycas is different from mango in :

 
 
 
 

408. The similarity between cyanobacteria and bacteria:

 
 
 
 

409.

 

410. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Which of the following are included in Tracheophyta?

 
 
 
 

414. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

416. In Selaginella, the microsporangia are:

 
 
 
 

417. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

419. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

421. Green plants are classified as:

 
 
 
 

422. Broad spectrum antibiotic is, which:

 
 
 
 

423. An alga which is rich in proteins:

 
 
 
 

424. Yeast is a source of:

 
 
 
 

425. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

427. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

429. The chief characteristic of class Ascomycetes is:

 
 
 
 

430. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

432. Which is a redwood tree?

 
 
 
 

433. Seeds are characteristically found in:

 
 
 
 

434. Desired type of Cycas can be grown by:

 
 
 
 

435. Which is not true for Escherichia coli?

 
 
 
 

436. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

439. Aflatoxin is produced as a product in :

 
 
 
 

440. The male gametes of Pinus are :

 
 
 
 

441. Polystelic condition is found in:

 
 
 
 

442. Bacteria growing on synthetic medium are called:

 
 
 
 

443. The young leaves of Cycas have :

 
 
 
 

444. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

446. Facultative parasite is:

 
 
 
 

447. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

452. Circular DNA is seen in:

 
 
 
 

453. Photosynthetic protists belong to:

 
 
 
 

454. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. Which of the following lichens is harmful?

 
 
 
 

458. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

459. Absorptive nutrition is:

 
 
 
 

460. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

465. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. Which of the following statements is not correct?

 
 
 
 

471. Soil fertility is lost by the activities of:

 
 
 
 

472. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

477. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

479. Interferon is a:

 
 
 
 

480. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Ergot is obtained from :

 
 
 
 

484. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

486. Which of the following is true for Selaginella?

 
 
 
 

487. Genetic material of TMV is:

 
 
 
 

488. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. Rhizoids of Riccia are :

 
 
 
 

494. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. Virus and bacteriophage are made-up of:

 
 
 
 

498. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

500. Lichens show :

 
 
 
 

501. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

508. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

511. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

513. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

514. Which bacteria convert nitrate into nitrogen?

 
 
 
 

515. Chemosynthetic bacteria are:

 
 
 
 

516. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

518. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

520. Bacteria which are spherical are called:

 
 
 
 

521. The antibiotic is obtained from:

 
 
 
 

522. The smallest unit of classification is:

 
 
 
 

523. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

525. To which country Antony van Leeuwenhoek belong?

 
 
 
 

526. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

528. The sporophyte of Riccia is :

 
 
 
 

529. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

530. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. The zoospores of Ulothrix are :

 
 
 
 

535. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

539. In moss, conducting tissue is made up of

 
 
 
 

540. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Cycas is:

 
 
 
 

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

 
 
 
 

548. Winged seeds are found in :

 
 
 
 

549. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

551. Who discovered cyanophages?

 
 
 
 

552. What is mycorrhiza?

 
 
 
 

553. The phloem of vascular system of Cycas is :

 
 
 
 

554. Woody climbers are known as :

 
 
 
 

555. Some biologists have used the term Mycetozoa for:

 
 
 
 

556. 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?

 
 
 
 

557. The largest alga is:

 
 
 
 

558. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Which one of the following is a monocot?

 
 
 
 

563. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. Mycoplasma was discovered by:

 
 
 
 

567. Majority of lichens are :

 
 
 
 

568. Bacteriophage consists of:

 
 
 
 

569. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

571. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

580. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

582. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. 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?

 
 
 
 

587. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

588. Cryptogams include :

 
 
 
 

589. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

592. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

593. Lichens are ecologically important because :

 
 
 
 

594. The plants of Funaria grow :

 
 
 
 

595. Bryophyta have been placed in cryptogams because:

 
 
 
 

596. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

600. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

613. Bacteria are found everywhere, except:

 
 
 
 

614. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

618. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

620. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

622. The truncated cone of HIV consists of:

 
 
 
 

623. Economic importance of bacteria lies in their being:

 
 
 
 

624. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

629. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. Siphonogamy is found in:

 
 
 
 

633. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

641. Psilotum is:

 
 
 
 

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

 
 
 
 

643. Mycoplasma are sensitive to:

 
 
 
 

644. Which of the following are absent in Mycoplasma?

 
 
 
 

645. Cycas plant in appearance resembles :

 
 
 
 

646. Pneumonia is caused by:

 
 
 
 

647. Anoxygenic photosynthesis occurs in:

 
 
 
 

648. In Cycas:

 
 
 
 

649. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Water-net is the name of:

 
 
 
 

653. Metulae are found in:

 
 
 
 

654. Which of the following is a monocot?

 
 
 
 

655. Longest known virus is:

 
 
 
 

656. Which of the following are included in Tracheophyta?

 
 
 
 

657. In Herpes virus DNA is:

 
 
 
 

658. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

663. In moss, sporophyte is formed on:

 
 
 
 

664. Which condition is found in Cycas?

 
 
 
 

665. Lichens form the first community in

 
 
 
 

666. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

668. Sleeping sickness disease in man is caused by:

 
 
 
 

669. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

671. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

681. Nitrogen-fixing bacteria may be located:

 
 
 
 

682. Pasteur is famous for his:

 
 
 
 

683. Embryophyta includes:

 
 
 
 

684. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

687. Quarantine regulations are concerned with:

 
 
 
 

688. In Funaria :

 
 
 
 

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

 
 
 
 

690. Mycoplasmas are not viruses in nature because:

 
 
 
 

691. NBG of Lucknow is now named as:

 
 
 
 

692. Which of the following statement is correct?

 
 
 
 

693. Pythium debaryanum is the causative agent of:

 
 
 
 

694. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

699. Bivalved siliceous shell or frustule occur in:

 
 
 
 

700. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

702. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. Asexual reproductive body of Volvox is called:

 
 
 
 

706. Which statement is wrong in regard to bacteria?

 
 
 
 

707. Most of the lichens are composed of :

 
 
 
 

708. Ovules are not found enclosed in ovary in :

 
 
 
 

709. Typhoid in man is caused by:

 
 
 
 

710. Black rust of wheat is caused by:

 
 
 
 

711. All algae have:

 
 
 
 

712. Select the wrong statement:

 
 
 
 

713. Fern phloem lacks:

 
 
 
 

714. Wine turns sour because of:

 
 
 
 

715. In Pteris, the roots are:

 
 
 
 

716. Select the correct statement: (NEET 2016)

 
 
 
 

717. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

719. Saccharomyces is used in:

 
 
 
 

720. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

723. The disease apple scab is caused by:

 
 
 
 

724. Which part of Riccia bears nurse cells?

 
 
 
 

725. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. Vascular cryptogam is the term used for :

 
 
 
 

730. Meiosis in Ulothrix takes place:

 
 
 
 

731. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

733. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

734. Antibiotics cure the disease by:

 
 
 
 

735. Kuru, a human disease is caused by:

 
 
 
 

736. Green plants are classified as :

 
 
 
 

737. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

739. Ovary is absent in:

 
 
 
 

740. Black rust of wheat is caused by:

 
 
 
 

741. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

743. Most primitive embryophytes are placed in :

 
 
 
 

744.

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

 
 
 
 

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

 
 
 
 

747. The order generally ends with:

 
 
 
 

748. Cellular slime mold is:

 
 
 
 

749. Red rot of sugarcane is caused by:

 
 
 
 

750. Discovery of penicillin was based on:

 
 
 
 

751. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

753. Fruiting body of lichens is :

 
 
 
 

754. The leaves of Funaria are :

 
 
 
 

755. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

757. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. Fruits are not found in Cycas because:

 
 
 
 

763. Virion refers to:

 
 
 
 

764. Centric discoid form of diatom is:

 
 
 
 

765. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

767. Embryo formation is not known in :

 
 
 
 

768. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

769. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

771. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

772. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

775. Yeast belongs to class:

 
 
 
 

776. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

781. Which group of algae have an incipient nucleus?

 
 
 
 

782. Among the algae kelps are :

 
 
 
 

783. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

785. Which of the following does not contain chlorophyll?

 
 
 
 

786. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

788. Pinus gerardiana is :

 
 
 
 

789. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

791. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

793. Which of the following have a prokaryotic cell?

 
 
 
 

794. The lichens growing on rocks are called :

 
 
 
 

795. Reproduction in Cycas takes place by :

 
 
 
 

796. All archaebacteria lack:

 
 
 
 

797. Winged pollen grains are found in :

 
 
 
 

798. Botulism is a:

 
 
 
 

799. Which of the following have algal zone?

 
 
 
 

800. Which is a gametophytic tissue?

 
 
 
 

801. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

803. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Ulothrix produces :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. Funaria is a Bryophyta because :

 
 
 
 

811. Bacteria differ from viruses in being sensitive to:

 
 
 
 

812. Acetobacter is useful in:

 
 
 
 

813. Acellular slime mold is/are:

 
 
 
 

814. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

816. The first to isolate a plant virus was:

 
 
 
 

817. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

819. The development of Selaginella embryo is:

 
 
 
 

820. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. Cleavage polyembryony is found in :

 
 
 
 

824. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

827. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

832. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. Yeast grows more rapidly in:

 
 
 
 

836. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

841. LSD is:

 
 
 
 

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

 
 
 
 

843. Penicillin is obtained from:

 
 
 
 

844. In Cycas microsporangia are borne on:

 
 
 
 

845. Pinus microsporophyll bears:

 
 
 
 

846. Tautonyms are illegitimate in:

 
 
 
 

847. The source of litmus is :

 
 
 
 

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

 
 
 
 

849. Ethylene oxide is widely used to:

 
 
 
 

850. What is a vector?

 
 
 
 

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

 
 
 
 

852. Bacteriophages have been used as:

 
 
 
 

853. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

855.

856. The prothallus of fern represents the plant:

 
 
 
 

857. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

861. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

862. What is streptomycin?

 
 
 
 

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

 
 
 
 

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