Quiz_Random

1. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

3. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. All protozoans possess:

 
 
 
 

8. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. White rust of crucifers is caused by:

 
 
 
 

13. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

15. The lichens growing on rocks are called :

 
 
 
 

16. The term stele was given by:

 
 
 
 

17. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

18. The vascular bundles of Cycas stem are :

 
 
 
 

19. Helotism word is used for the symbiosis between :

 
 
 
 

20. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

22. The plants of Funaria grow :

 
 
 
 

23. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

25. In Selaginella, the microsporangia are:

 
 
 
 

26. An alga which is rich in proteins:

 
 
 
 

27. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

29. 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:

 
 
 
 

30. Cryptogams include :

 
 
 
 

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

 
 
 
 

32. What is streptomycin?

 
 
 
 

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

 
 
 
 

34. Which of the following have algal zone?

 
 
 
 

35. Absorptive nutrition is:

 
 
 
 

36. Methanogens belong to:

 
 
 
 

37. Number of capsomeres forming capsid of TMV is:

 
 
 
 

38. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

40. Ethylene oxide is widely used to:

 
 
 
 

41. Fern plants are:

 
 
 
 

42. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. Fruits are not found in Cycas because:

 
 
 
 

46. Psilotum is:

 
 
 
 

47. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

49. Among the algae kelps are :

 
 
 
 

50. Some bacteria cannot be killed easily because of:

 
 
 
 

51. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. In moss, sporophyte is formed on:

 
 
 
 

55. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

57. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

59. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

61. Downy mildew disease is caused by :

 
 
 
 

62. Polystelic condition is found in:

 
 
 
 

63. Which of the following lichens is harmful?

 
 
 
 

64. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

66. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73.

74. Select the wrong statement:

 
 
 
 

75. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

77. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Bacteriophage consists of:

 
 
 
 

81. In moss, stomata are found:

 
 
 
 

82.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Fruits are not found in :

 
 
 
 

87. The mode of nutrition of bacteria is usually:

 
 
 
 

88. Penicillin was discovered by:

 
 
 
 

89. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Which of the following shows heterotrichous habit?

 
 
 
 

93. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

95. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

97. Mycoplasmas are not viruses in nature because:

 
 
 
 

98. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. Who discovered cyanophages?

 
 
 
 

103. Which one of the following is a monocot?

 
 
 
 

104. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Interferon is a:

 
 
 
 

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

 
 
 
 

109. Funaria is a Bryophyta because :

 
 
 
 

110. Which is a gametophytic tissue?

 
 
 
 

111. Select the wrong statement:

 
 
 
 

112. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. In Cycas the fertilization is:

 
 
 
 

117. In Gymnocarpeae the fruiting body is :

 
 
 
 

118. To which class Riccia belongs :

 
 
 
 

119. Saccharomyces is used in:

 
 
 
 

120. An Hfr bacterium is one that contains:

 
 
 
 

121. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. Most primitive embryophytes are placed in :

 
 
 
 

125. Select the correct statement: (NEET 2016)

 
 
 
 

126. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. Indusium in Dryopteris is:

 
 
 
 

131. Sleeping sickness disease in man is caused by:

 
 
 
 

132. The genetic material of poxvirus is:

 
 
 
 

133. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

135. Bacteria growing on synthetic medium are called:

 
 
 
 

136. In moss, peristomial teeth are:

 
 
 
 

137. The leafy fern plant represents the:

 
 
 
 

138. Generic name of mango is:

 
 
 
 

139. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

141. Antibiotic has been extracted from :

 
 
 
 

142. 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:

 
 
 
 

143. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Smut of maize is caused by :

 
 
 
 

147. The antibiotic is obtained from:

 
 
 
 

148. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. Each chloroplast in Spirogyra bears :

 
 
 
 

157. The fern plant is:

 
 
 
 

158. The largest known bacterium is:

 
 
 
 

159. Water-net is the name of:

 
 
 
 

160. Pasteurization of milk involves heating for:

 
 
 
 

161. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

169. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

171. Most of the algae are :

 
 
 
 

172. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

174. 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?

 
 
 
 

175. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. The development of sporangium in Selaginella is:

 
 
 
 

179. Ulothrix produces :

 
 
 
 

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

 
 
 
 

181. Photoautotrophic bacteria have:

 
 
 
 

182. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. Simple polyembryony is found in :

 
 
 
 

186. Embryophyta includes:

 
 
 
 

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

 
 
 
 

188. The male gametes of Pinus are :

 
 
 
 

189.

 

190. Sexual reproduction in Rhizopus is by:

 
 
 
 

191. 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:

 
 
 
 

192. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

194. Bacteria are found everywhere, except:

 
 
 
 

195. Vegetative reproduction in Cycas is by means of :

 
 
 
 

196. Who among the following discovered virus?

 
 
 
 

197. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Lichens show :

 
 
 
 

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

 
 
 
 

202. The upper region of moss capsule is :

 
 
 
 

203. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

205. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

210. In a diplontic life cycle:

 
 
 
 

211. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

218. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

220. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

221. The Rhizopus gametes are formed in:

 
 
 
 

222. The source of litmus is :

 
 
 
 

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

 
 
 
 

224. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

226. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

228. In Cycas:

 
 
 
 

229. Cocci types of bacteria are:

 
 
 
 

230. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

232. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

234. The rhizoids of Funaria are :

 
 
 
 

235. The chief characteristic of class Ascomycetes is:

 
 
 
 

236. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

238. The chloroplast of Chlamydomonas are:

 
 
 
 

239. 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:

 
 
 
 

240. Early blight of potato is caused by:

 
 
 
 

241. In dinoflagellates, the two flagella are:

 
 
 
 

242. Ovary is absent in:

 
 
 
 

243. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

245. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

247. Placenta in fern is:

 
 
 
 

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

 
 
 
 

249. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

253. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

258. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

260. The middle sterile part of capsule is called:

 
 
 
 

261. The smallest bacterium is:

 
 
 
 

262. Botulism is a:

 
 
 
 

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

 
 
 
 

264. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. The flagella of Chlamydomonas are:

 
 
 
 

269. Heterocysts are found in :

 
 
 
 

270. The seedless plants which possess vascular tissues are:

 
 
 
 

271. Which is a fungicide?

 
 
 
 

272. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

275. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

276. Azolla growing in paddy fields helps in:

 
 
 
 

277. The tree fern is:

 
 
 
 

278. In moss, sporogenous tissue arises from:

 
 
 
 

279. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. 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:

 
 
 
 

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

 
 
 
 

284. Red rot of sugarcane is caused by :

 
 
 
 

285. Green plants are classified as :

 
 
 
 

286. The first to isolate a plant virus was:

 
 
 
 

287. . Tapetum develops in:

 
 
 
 

288. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. The roots of Cycas are :

 
 
 
 

292. Cycas is:

 
 
 
 

293. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

295. Ovary is absent in :

 
 
 
 

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

 
 
 
 

297. The orders generally have the uniform endings:

 
 
 
 

298. The prothallus of fern represents the plant:

 
 
 
 

299. Virion refers to:

 
 
 
 

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

 
 
 
 

301. The sporangiophores in Rhizopus are:

 
 
 
 

302. Iodine is obtained from:

 
 
 
 

303. Aflatoxin is produced as a product in :

 
 
 
 

304. 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?

 
 
 
 

305. Who discovered heterothallism in fungi?

 
 
 
 

306. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

308. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

310. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. Cap cells are found in the filament of:

 
 
 
 

314. Fern phloem lacks:

 
 
 
 

315. Tautonyms are illegitimate in:

 
 
 
 

316. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

317. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Typhoid in man is caused by:

 
 
 
 

321. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

323. 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:

 
 
 
 

324. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

326. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

328. Heterospory and ligulate leaves are a feature of:

 
 
 
 

329. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

332. Which of the following are absent in Mycoplasma?

 
 
 
 

333. Mycoplasma was discovered by:

 
 
 
 

334. Quarantine regulations are concerned with:

 
 
 
 

335. Usually, bacteria reproduce by:

 
 
 
 

336. Ergot is obtained from :

 
 
 
 

337. Viroids have:

 
 
 
 

338. Selaginella differs from Moss in having:

 
 
 
 

339. Metulae are found in:

 
 
 
 

340. In Funaria :

 
 
 
 

341. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. The ferns are usually found:

 
 
 
 

345. The chromosomal number in:

 
 
 
 

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

 
 
 
 

347. Ergot of rye is caused by:

 
 
 
 

348. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

350. In Herpes virus DNA is:

 
 
 
 

351. Which of the following applies to Selaginella?

 
 
 
 

352. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

354. The sexual reproductive organs in Rhizopus are:

 
 
 
 

355. The tallest moss in the world is :

 
 
 
 

356. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

359. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

362. Late blight of potato is caused by :

 
 
 
 

363. What is special feature of fern archegonia?

 
 
 
 

364. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

365. Mucilaginous canals in Cycas are found in :

 
 
 
 

366. Parmelia belongs to :

 
 
 
 

367.

368. Lichen show :

 
 
 
 

369. The lambda phase is a:

 
 
 
 

370. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

372. Male gametophyte of Selaginella is found:

 
 
 
 

373. Which is absent from the xylem of Cycas?

 
 
 
 

374. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

377. In Cycas which structure is equivalent to stamen?

 
 
 
 

378. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

380. The phloem of vascular system of Cycas is :

 
 
 
 

381. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Facultative parasite is:

 
 
 
 

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

 
 
 
 

386. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

388. Viruses have:

 
 
 
 

389. Soil fertility is lost by the activities of:

 
 
 
 

390. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

392. Meristele of fern is:

 
 
 
 

393. A gill of Agaricus:

 
 
 
 

394. Cell walls of Gram-positive bacteria contain:

 
 
 
 

395. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

397. Winged seeds are found in :

 
 
 
 

398. Vascular cryptogam is the term used for :

 
 
 
 

399. The archegonia of Selaginella are differentiated by:

 
 
 
 

400. The disease symptom necrosis refers to :

 
 
 
 

401. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

403. Fern prothallus produces:

 
 
 
 

404. Oswald Tippo’s classification was based on :

 
 
 
 

405. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. The leaf of Cycas shows:

 
 
 
 

413. How is moss different from fern?

 
 
 
 

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

 
 
 
 

415. Bryophyta have been placed in cryptogams because:

 
 
 
 

416. The leaves of Funaria are :

 
 
 
 

417. The archegonia in Selaginella develop on:

 
 
 
 

418. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

420. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Mixed cropping helps :

 
 
 
 

433. 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?

 
 
 
 

434. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

439. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

442. Clostridium can:

 
 
 
 

443. Saccharomyces ludwigii ascus produces:

 
 
 
 

444. Milk is converted to curd by:

 
 
 
 

445. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

447. In angiosperms double fertilization represents:

 
 
 
 

448. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

450. The spur of Pinus roxburghii has :

 
 
 
 

451. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

453. The fungi are mostly:

 
 
 
 

454. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

456. Centric discoid form of diatom is:

 
 
 
 

457. First animal pathogenic virus was discovered by:

 
 
 
 

458. Circular DNA is seen in:

 
 
 
 

459. Spores of which plants have chloroplast:

 
 
 
 

460. In binomial system most of the words are:

 
 
 
 

461. Standard size of a herbarium sheet is:

 
 
 
 

462. E coli is a:

 
 
 
 

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

 
 
 
 

464. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

466. Which is the nuclear material in bacteria?

 
 
 
 

467. Late blight of potato is caused by:

 
 
 
 

468. The central part of Funaria axis is :

 
 
 
 

469. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

473. Leaf spot of groundnut is caused by :

 
 
 
 

474. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

476. Water bloom is generally caused by :

 
 
 
 

477. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

479. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

481. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Diphtheria is caused by:

 
 
 
 

486. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

488. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. The role of meiosis is for:

 
 
 
 

493. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

498. Roots are absent in :

 
 
 
 

499. Germ theory of disease was proposed by:

 
 
 
 

500. Pseudomycelium is found in:

 
 
 
 

501. Pasteur is famous for his:

 
 
 
 

502. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

504. Lichens reproduce by :

 
 
 
 

505. In moss, reduction division occurs in :

 
 
 
 

506. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

508. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

510. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. In Gymnosperms endosperm is a:

 
 
 
 

517. Which is a tautonym?

 
 
 
 

518. In Cycas microsporangia are borne on:

 
 
 
 

519. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

521. The sporangia of Selaginella are attached:

 
 
 
 

522. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

525. Spermatophyta are characterized by producing:

 
 
 
 

526. Cellular slime mold is:

 
 
 
 

527. The antherozoids of Funaria are :

 
 
 
 

528. Embryophyta includes :

 
 
 
 

529. Plasmids are:

 
 
 
 

530. Club moss and Peat moss belong to:

 
 
 
 

531. Which one of the following statement is wrong?

 
 
 
 

532. Mostly type of zygospore in Ulothrix is:

 
 
 
 

533. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. Mycoplasma is different from bacteria due to:

 
 
 
 

538. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

540. Botulinum toxin effects:

 
 
 
 

541. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

543. The fungi used as food are:

 
 
 
 

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

 
 
 
 

545. Wine turns sour because of:

 
 
 
 

546. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

548. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

550. Streptomyces falls under:

 
 
 
 

551. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

553. Yeast is a source of:

 
 
 
 

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

 
 
 
 

555. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

564. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

566. Coenogamete is found in:

 
 
 
 

567. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

570. Saccharomyces is well known for:

 
 
 
 

571. The ascus of yeast contains:

 
 
 
 

572. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. Ginkgo biloba is a:

 
 
 
 

576. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

578. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

580. Some diseases caused by bacteria are:

 
 
 
 

581. The order generally ends with:

 
 
 
 

582. Funaria is :

 
 
 
 

583. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

585. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

587. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. NBG of Lucknow is now named as:

 
 
 
 

595. Water-borne bacterial diseases are:

 
 
 
 

596. Citrus canker is caused by :

 
 
 
 

597. Liverworts are included in :

 
 
 
 

598. Which is an exception to cell theory?

 
 
 
 

599. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

601. Spirogyra differs from moss protonema in having :

 
 
 
 

602. Pteridophyta are also called:

 
 
 
 

603. What is a vector?

 
 
 
 

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

 
 
 
 

605. Cyanophage is a virus that attacks:

 
 
 
 

606. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. LSD is:

 
 
 
 

610. Cycas is :

 
 
 
 

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

 
 
 
 

612. The similarity between cyanobacteria and bacteria:

 
 
 
 

613. Protozoans are considered animals because these are:

 
 
 
 

614. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

616. Winged pollen grains are found in :

 
 
 
 

617. The gametophyte produced by apospory is :

 
 
 
 

618. Which of the following are included in Tracheophyta?

 
 
 
 

619. Spirogyra represents the :

 
 
 
 

620. Gram stain is used to:

 
 
 
 

621. Pollination in Cycas takes place by :

 
 
 
 

622. Photosynthetic protists belong to:

 
 
 
 

623. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

625. The sporangium of fern contains nearly:

 
 
 
 

626. Which lichen is called Reindeer moss?

 
 
 
 

627. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

629. Bacteria are placed under:

 
 
 
 

630. The Rhizopus is:

 
 
 
 

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

 
 
 
 

632. Ectocarpus produces:

 
 
 
 

633. Bacteria differ from viruses in being sensitive to:

 
 
 
 

634. All archaebacteria lack:

 
 
 
 

635. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

639. Mycoplasma are:

 
 
 
 

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

 
 
 
 

641. Nannandria are:

 
 
 
 

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

 
 
 
 

643. Seeds are characteristically found in:

 
 
 
 

644. What are plasmids?

 
 
 
 

645. One of the distinctive feature of Spirogyra is :

 
 
 
 

646. Which organisms are the oldest life forms?

 
 
 
 

647. The megaspore of Selaginella on germination produces:

 
 
 
 

648. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

650. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

653. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

658. In tracheophyta:

 
 
 
 

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

 
 
 
 

660. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

662. Facultative saprophyte is:

 
 
 
 

663. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

664. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

666. Rhizopus and yeast are usually:

 
 
 
 

667. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. Multicellular and jacketed sex organs are found in :

 
 
 
 

671. Red rot of sugarcane is caused by:

 
 
 
 

672. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

674. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

676. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. The gametophyte of moss has distinct phases :

 
 
 
 

680. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. Enteric bacteria are those bacteria that live:

 
 
 
 

685. Zoogametes are not found in:

 
 
 
 

686. The leaves of Funaria are :

 
 
 
 

687. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

689. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

691. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

693. Funaria can be differentiated from Cycas :

 
 
 
 

694. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

696. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. Virus and bacteriophage are made-up of:

 
 
 
 

701. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

703. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

705. Pinus is:

 
 
 
 

706. Which causes red tide?

 
 
 
 

707. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

708. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

710. Most common type of conjugation in Spirogyra is :

 
 
 
 

711. 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?

 
 
 
 

712. Oswald Tippo’s classification is:

 
 
 
 

713. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

717. Black rust of wheat is caused by:

 
 
 
 

718. Which group of algae have an incipient nucleus?

 
 
 
 

719. Most primitive embryophytes are placed in:

 
 
 
 

720. Funaria are commonly found :

 
 
 
 

721. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. The fungi are usually:

 
 
 
 

725. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

732. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

734. Viruses are considered to be:

 
 
 
 

735. Pinus microsporophyll bears:

 
 
 
 

736. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. The fungi that grow on wood are called:

 
 
 
 

740. Fruits are not found in:

 
 
 
 

741. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

744. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

745. The photosynthetic protists are:

 
 
 
 

746. Longest known virus is:

 
 
 
 

747. Which is a redwood tree?

 
 
 
 

748. Pythium debaryanum is the causative agent of:

 
 
 
 

749. Fruiting body of lichens is :

 
 
 
 

750. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

753. Which of the following is sago palm?

 
 
 
 

754. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

761. Fern prothallus is:

 
 
 
 

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

 
 
 
 

763. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Bivalved siliceous shell or frustule occur in:

 
 
 
 

767. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

772. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

777. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

779. All algae have:

 
 
 
 

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

 
 
 
 

781. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

785. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

788. Pteridophytes are also known as :

 
 
 
 

789. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Which of the following statements is not correct?

 
 
 
 

798. Pasteurized milk is:

 
 
 
 

799. The mycelium of Rhizopus is:

 
 
 
 

800. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

803. Cycas revoluta is widely grown as :

 
 
 
 

804. What is absent in Deuteromycetes?

 
 
 
 

805. 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:

 
 
 
 

806. Sometimes the bacterial cell is enclosed in:

 
 
 
 

807. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. The two conjugating gametangia of Rhizopus are:

 
 
 
 

811. Heterospory is the production of:

 
 
 
 

812. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

814. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

816. Isomorphic type alternation of generation is found in:

 
 
 
 

817. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

826. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

829. Kuru, a human disease is caused by:

 
 
 
 

830. The sporophyte of Riccia is :

 
 
 
 

831. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

833. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

835. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

840. Choose the correct statement about Spirogyra:

 
 
 
 

841. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

842. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

844. Infective part of virus was discovered by:

 
 
 
 

845. The smallest unit of classification is:

 
 
 
 

846. Pythium debaryanum is the causative agent of:

 
 
 
 

847. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. In Pteris, the archegonia are present:

 
 
 
 

851. Which of the following is true for viruses?

 
 
 
 

852. Protistan algae obtain their food as:

 
 
 
 

853. Iodine is obtained from :

 
 
 
 

854. John Hutchinson divided dicots into two divisions:

 
 
 
 

855. The coralloid roots are :

 
 
 
 

856. The megasporangium of Selaginella is:

 
 
 
 

857. Citrus canker is caused by:

 
 
 
 

858. What is the role of nitrifying bacteria?

 
 
 
 

859. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. Pollination drop is:

 
 
 
 

863. The stele of Dryopteris is a:

 
 
 
 

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