Quiz_Random

1. Choose the correct statement about Spirogyra:

 
 
 
 

2. Citrus canker is caused by:

 
 
 
 

3. Protists which are diploid reproduce sexually by:

 
 
 
 

4. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

5. Cycas is similar to a mustard plant :

 
 
 
 

6. The sporangiophores in Rhizopus are:

 
 
 
 

7. The development of sporangium in Selaginella is:

 
 
 
 

8. Sleeping sickness disease in man is caused by:

 
 
 
 

9. Pinus microsporophyll bears:

 
 
 
 

10. The largest alga is:

 
 
 
 

11. Cycas revoluta is widely grown as :

 
 
 
 

12. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

17. Fern prothallus is:

 
 
 
 

18. Some diseases caused by bacteria are:

 
 
 
 

19. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

21. White rust of crucifers is caused by:

 
 
 
 

22. Pasteurized milk is:

 
 
 
 

23. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

25. Which fixes atmospheric nitrogen?

 
 
 
 

26. The smallest bacterium is:

 
 
 
 

27. Proembryo in Pinus is :

 
 
 
 

28. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

30. The Rhizopus is:

 
 
 
 

31. Lichens show :

 
 
 
 

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

 
 
 
 

33. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Fern plants are:

 
 
 
 

41. Cryptogams include :

 
 
 
 

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

 
 
 
 

43. Lichens reproduce by :

 
 
 
 

44. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

46. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

48. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

50. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

54. Lichen show :

 
 
 
 

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

 
 
 
 

56. The gametophyte of fern bears:

 
 
 
 

57. Male gametes in Dryopteris are:

 
 
 
 

58. Rhizopus and yeast are usually:

 
 
 
 

59. Which is an exception to cell theory?

 
 
 
 

60. Pollination drop is:

 
 
 
 

61. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

66. Saccharomyces ludwigii ascus produces:

 
 
 
 

67. Woody climbers are known as :

 
 
 
 

68. Streptomycin is obtained from:

 
 
 
 

69. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. In Herpes virus DNA is:

 
 
 
 

73. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

75. Lichens are indicators of :

 
 
 
 

76. The lambda phase is a:

 
 
 
 

77. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. The sporangia of Selaginella are attached:

 
 
 
 

87. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Virion refers to:

 
 
 
 

91. Pythium debaryanum is the causative agent of:

 
 
 
 

92. Funaria are commonly found :

 
 
 
 

93. Longest known virus is:

 
 
 
 

94. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Sporophyte of Funaria is :

 
 
 
 

98. In Cycas the fertilization is:

 
 
 
 

99. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

100. Funaria is a Bryophyta because :

 
 
 
 

101. The orders generally have the uniform endings:

 
 
 
 

102. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

104. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

106. Cycas is :

 
 
 
 

107. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

113. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

115. In moss, conducting tissue is made up of

 
 
 
 

116. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

118. Pythium debaryanum is the causative agent of:

 
 
 
 

119. Chemosynthetic bacteria are:

 
 
 
 

120. A gill of Agaricus:

 
 
 
 

121. Pinus is:

 
 
 
 

122. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

131. Bacteria are considered to be plants because they:

 
 
 
 

132. Chief constituents of bordeaux mixture are :

 
 
 
 

133. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. The order generally ends with:

 
 
 
 

139. The sporophyte of Riccia is represented by :

 
 
 
 

140. The gametophyte of fern is as:

 
 
 
 

141. Cyanophage is a virus that attacks:

 
 
 
 

142. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. Germ theory of disease was proposed by:

 
 
 
 

149. Most appropriate word for protozoans is:

 
 
 
 

150. Ergot of rye is caused by:

 
 
 
 

151. Amoeba is a member of the phylum:

 
 
 
 

152. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

154. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

156. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

158. Vascular tissue is found in :

 
 
 
 

159. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

161. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

163. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

165. Redness of red sea is due to :

 
 
 
 

166. Etiology includes the study of :

 
 
 
 

167. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. All protozoans possess:

 
 
 
 

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

 
 
 
 

172. Ginkgo biloba is a:

 
 
 
 

173. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. Which of the following is true for viruses?

 
 
 
 

177. Ovary is absent in :

 
 
 
 

178. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

185. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

187. The Rhizopus gametes are formed in:

 
 
 
 

188. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

197. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

199. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. The male gametes of Pinus are :

 
 
 
 

204. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

206. The fern plant is:

 
 
 
 

207. Which causes red tide?

 
 
 
 

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

 
 
 
 

209. 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:

 
 
 
 

210. What is mycorrhiza?

 
 
 
 

211. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

213. The first to isolate a plant virus was:

 
 
 
 

214. Winged seeds are found in :

 
 
 
 

215. Heterocysts are found in :

 
 
 
 

216. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

222. Water-borne bacterial diseases are:

 
 
 
 

223. Nitrifying bacteria play an important role by converting:

 
 
 
 

224. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. Lichens are pioneers of vegetation in a :

 
 
 
 

228. Chemosynthetic bacteria are:

 
 
 
 

229. The upper region of moss capsule is :

 
 
 
 

230. The term stele was given by:

 
 
 
 

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

 
 
 
 

232. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

234. In a bacteriophage, DNA is present in:

 
 
 
 

235. Yeast is a source of:

 
 
 
 

236. Bivalved siliceous shell or frustule occur in:

 
 
 
 

237.

238. The coralloid roots are :

 
 
 
 

239. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

241. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

243. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

245. Typhoid in man is caused by:

 
 
 
 

246. All archaebacteria lack:

 
 
 
 

247. The source of litmus is :

 
 
 
 

248. The seedless plants which possess vascular tissues are:

 
 
 
 

249. NBG of Lucknow is now named as:

 
 
 
 

250. The sori in Dryopteris are found on:

 
 
 
 

251. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

253. Leprosy is caused by:

 
 
 
 

254. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

256. Bacteria are found everywhere, except:

 
 
 
 

257. 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:

 
 
 
 

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

 
 
 
 

259. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

264. In Cycas:

 
 
 
 

265. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

267. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

269. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

271. The fungi used as food are:

 
 
 
 

272. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

274. Ergot is obtained from :

 
 
 
 

275. Green plants are classified as:

 
 
 
 

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

 
 
 
 

277. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

278. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. Ovules are not found enclosed in ovary of:

 
 
 
 

282. In binomial system most of the words are:

 
 
 
 

283. Seeds are characteristically found in :

 
 
 
 

284. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

286. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

289. The chloroplast in Ulothrix is :

 
 
 
 

290. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

296. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

298. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

300. Standard size of a herbarium sheet is:

 
 
 
 

301. Most primitive embryophytes are placed in:

 
 
 
 

302. Fern phloem lacks:

 
 
 
 

303. Indusium in Dryopteris is:

 
 
 
 

304. Parmelia belongs to :

 
 
 
 

305. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. Metulae are found in:

 
 
 
 

310. The middle sterile part of capsule is called:

 
 
 
 

311. Fruits are not found in :

 
 
 
 

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

 
 
 
 

313. In Funaria :

 
 
 
 

314. Clostridium can:

 
 
 
 

315. Mycoplasma is different from bacteria due to:

 
 
 
 

316. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

321. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

323. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

328. Funaria can be differentiated from Cycas :

 
 
 
 

329. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

331. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Which bacteria convert nitrate into nitrogen?

 
 
 
 

336. The most primitive vascular plants is:

 
 
 
 

337. Who discovered heterothallism in fungi?

 
 
 
 

338. Mycoplasma are:

 
 
 
 

339. Which part of Riccia bears nurse cells?

 
 
 
 

340. Diphtheria is caused by:

 
 
 
 

341. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

346. Which of the following is a monocot?

 
 
 
 

347. Most primitive embryophytes are placed in :

 
 
 
 

348. Triple antigen injection or vaccine are for:

 
 
 
 

349. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

350. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

355. Facultative parasite is:

 
 
 
 

356. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

358. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

361. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

363. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

365. Red rot of sugarcane is caused by :

 
 
 
 

366. Club moss and Peat moss belong to:

 
 
 
 

367. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

369. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

371. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Germination of the seed of Pinus is :

 
 
 
 

375. The zoospores of Ulothrix are :

 
 
 
 

376. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

378. 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?

 
 
 
 

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

 
 
 
 

380. The tree fern is:

 
 
 
 

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

 
 
 
 

382. The chromosomal number in:

 
 
 
 

383. Interferon is a:

 
 
 
 

384. Bacteria are placed under:

 
 
 
 

385. The chloroplast of Chlamydomonas are:

 
 
 
 

386. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. In Cycas microsporangia are borne on:

 
 
 
 

390. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

395. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

397. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

398. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

400. The nucleus of bacteria is:

 
 
 
 

401. In Funaria, calyptra is derived from :

 
 
 
 

402. Synzoospore is produced in:

 
 
 
 

403. Which is a tautonym?

 
 
 
 

404. Which of the following have algal zone?

 
 
 
 

405. Bacteria were first discovered by:

 
 
 
 

406. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

408. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Bacteria differ from viruses in being sensitive to:

 
 
 
 

414. Reserve food in Euglena is:

 
 
 
 

415. Fruits are not found in:

 
 
 
 

416. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

418. Liverworts are included in :

 
 
 
 

419. The disease apple scab is caused by:

 
 
 
 

420. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. Yeast belongs to class:

 
 
 
 

430. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

432. Small epidermal swellings due to infection are called :

 
 
 
 

433. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

435. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

437. The antibiotic is obtained from:

 
 
 
 

438. Heterosporous pteridophytes always form:

 
 
 
 

439. The two conjugating gametangia of Rhizopus are:

 
 
 
 

440. Bryophyta have been placed in cryptogams because:

 
 
 
 

441. Enzymes are absent in:

 
 
 
 

442. Some bacteria cannot be killed easily because of:

 
 
 
 

443. The megaspore of Selaginella on germination produces:

 
 
 
 

444. Reproduction in Rhizopus is:

 
 
 
 

445. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

447. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

449. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

451. Most of the algae are :

 
 
 
 

452. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

454. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

456. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Late blight of potato is caused by :

 
 
 
 

462.

463. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

464. Which of the following is sago palm?

 
 
 
 

465. LSD is:

 
 
 
 

466. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

468. Embryophyta includes :

 
 
 
 

469. Methanogens belong to:

 
 
 
 

470. The fungi are usually:

 
 
 
 

471. Late blight of potato is caused by:

 
 
 
 

472. Select the wrong statement:

 
 
 
 

473. Which of the following is a parasitic algae?

 
 
 
 

474. Virus and bacteriophage are made-up of:

 
 
 
 

475. Pollination in Pinus is :

 
 
 
 

476. Who named prion?

 
 
 
 

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

 
 
 
 

478. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

480. The photosynthetic protists are:

 
 
 
 

481. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

488. Which is a redwood tree?

 
 
 
 

489. Cycas is different from mango in :

 
 
 
 

490. Zoogametes are not found in:

 
 
 
 

491. Which of the following lichens is harmful?

 
 
 
 

492. Majority of lichens are :

 
 
 
 

493. Viroids have:

 
 
 
 

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

 
 
 
 

495. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

499. Spores of which plants have chloroplast:

 
 
 
 

500. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

502. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. Saccharomyces is used in:

 
 
 
 

506. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

515. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

517. Rhizophore of Selaginella is:

 
 
 
 

518. Select the wrong statement:

 
 
 
 

519. Desired type of Cycas can be grown by:

 
 
 
 

520.

521. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

524. Ethylene oxide is widely used to:

 
 
 
 

525. Ovary is absent in:

 
 
 
 

526. The chief characteristic of class Ascomycetes is:

 
 
 
 

527. The mycelium of Rhizopus is:

 
 
 
 

528. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

530. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

532. Rhizoids of Riccia are :

 
 
 
 

533. . Tapetum develops in:

 
 
 
 

534. Black rust of wheat is caused by:

 
 
 
 

535. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

537. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

539. Which condition is found in Cycas?

 
 
 
 

540. In moss, reduction division occurs in :

 
 
 
 

541. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

543. The zygospore in Rhizopus on germination forms:

 
 
 
 

544. Who among the following discovered virus?

 
 
 
 

545. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

549. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

554. Which have the largest antherozoid?

 
 
 
 

555. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

557. Why is Cycas called a living fossil?

 
 
 
 

558. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

560. The root nodules of leguminous plants contain:

 
 
 
 

561. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

563. The tallest moss in the world is :

 
 
 
 

564. Circular DNA is seen in:

 
 
 
 

565. Number of capsomeres forming capsid of TMV is:

 
 
 
 

566. Acellular slime mold is/are:

 
 
 
 

567. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

569. The ferns are usually found:

 
 
 
 

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

 
 
 
 

571. Iodine is obtained from:

 
 
 
 

572. In Pteris, the roots are:

 
 
 
 

573. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

575. Mostly type of zygospore in Ulothrix is:

 
 
 
 

576. Funaria is :

 
 
 
 

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

 
 
 
 

578. Pneumonia is caused by:

 
 
 
 

579. E coli is a:

 
 
 
 

580. All algae have:

 
 
 
 

581. Heterotrichous habit means :

 
 
 
 

582. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

586. Lichens are ecologically important because :

 
 
 
 

587. Agar-agar is obtained from:

 
 
 
 

588. True sexuality is not found in:

 
 
 
 

589. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Which is not found in bacteria?

 
 
 
 

596. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

598. Endemic plants are characterised by their:

 
 
 
 

599. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

602. Which of the following are included in Tracheophyta?

 
 
 
 

603. Smut of maize is caused by :

 
 
 
 

604. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

609. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

610. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

612. Among the algae kelps are :

 
 
 
 

613. Pasteur is famous for his:

 
 
 
 

614. Total parasites belong to:

 
 
 
 

615. Cycas plant in appearance resembles :

 
 
 
 

616. Isomorphic type alternation of generation is found in:

 
 
 
 

617. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

619. Facultative saprophyte is:

 
 
 
 

620. Which of the following statement is correct?

 
 
 
 

621. 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:

 
 
 
 

622. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

624. Cycas is:

 
 
 
 

625. Which is a fungicide?

 
 
 
 

626. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

631. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

633. Enteric bacteria are those bacteria that live:

 
 
 
 

634. In moss, stomata are found:

 
 
 
 

635. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

637. Smallpox is caused by:

 
 
 
 

638. Ulothrix produces :

 
 
 
 

639. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. Pseudomycelium is found in:

 
 
 
 

644. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

649. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

651. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

653. Fern prothallus produces:

 
 
 
 

654. In moss, peristomial teeth are:

 
 
 
 

655. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

660. Fairy ring is the name given to:

 
 
 
 

661. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Which of the following is true for Selaginella?

 
 
 
 

665. Which of the following applies to Selaginella?

 
 
 
 

666. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

668. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

670. Bacteriophages have been used as:

 
 
 
 

671. What is a vector?

 
 
 
 

672. Photosynthetic bacteria have:

 
 
 
 

673. Viruses have:

 
 
 
 

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

 
 
 
 

675. Climbers are found in genus:

 
 
 
 

676. Saccharomyces is well known for:

 
 
 
 

677. Which is the nuclear material in bacteria?

 
 
 
 

678. Selaginella differs from Moss in having:

 
 
 
 

679. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

682. Citrus canker is caused by :

 
 
 
 

683. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

685. In Pteris, the archegonia are present:

 
 
 
 

686. The development of Selaginella embryo is:

 
 
 
 

687. Funaria is :

 
 
 
 

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

 
 
 
 

689. Protozoans are considered animals because these are:

 
 
 
 

690. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

692. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

698. Reproduction in Cycas takes place by :

 
 
 
 

699. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Bacteria which are spherical are called:

 
 
 
 

703. Azolla growing in paddy fields helps in:

 
 
 
 

704. Infective part of virus was discovered by:

 
 
 
 

705. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

706. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

708. Cellular slime mold is:

 
 
 
 

709. The antherozoids of Funaria are :

 
 
 
 

710. Ovules are not found enclosed in ovary in :

 
 
 
 

711. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

718. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

721. Heterospory and ligulate leaves are a feature of:

 
 
 
 

722. The archegonia in Selaginella develop on:

 
 
 
 

723. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

725. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. The chief characteristic of bryophyta is that :

 
 
 
 

730. The most important property of yeast is:

 
 
 
 

731. Antibiotic has been extracted from :

 
 
 
 

732. In Gymnocarpeae the fruiting body is :

 
 
 
 

733. Quarantine regulations are concerned with:

 
 
 
 

734. The microsporophylls on the cone of Cycas are :

 
 
 
 

735. Gram stain is used to:

 
 
 
 

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

 
 
 
 

737. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

738. Lichens form the first community in

 
 
 
 

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

 
 
 
 

740. Which one of the following statement is wrong?

 
 
 
 

741. 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:

 
 
 
 

742. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

743. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

745.

 

746. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

751. The fungi are mostly:

 
 
 
 

752. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. Plasmids are:

 
 
 
 

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

 
 
 
 

757. The rhizoids of Funaria are :

 
 
 
 

758. Which of the following are absent in Mycoplasma?

 
 
 
 

759. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

764. Roots are absent in :

 
 
 
 

765. Transfusion tissue is present in the leaflet of:

 
 
 
 

766. Where does meiosis occur in yeast?

 
 
 
 

767. In Selaginella, the microsporangia are:

 
 
 
 

768. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

770. In moss, sporogenous tissue arises from:

 
 
 
 

771. Little leaf disease of Brinjal is caused by:

 
 
 
 

772. The similarity between cyanobacteria and bacteria:

 
 
 
 

773. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

775. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

777. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

782. The role of meiosis is for:

 
 
 
 

783. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

785. The flagella of Chlamydomonas are:

 
 
 
 

786. 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?

 
 
 
 

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

 
 
 
 

788. Diploxylic vascular bundles are found in:

 
 
 
 

789. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

794. The fungi that grow on wood are called:

 
 
 
 

795. Which among the following is a shrub?

 
 
 
 

796. The leaf of Cycas shows:

 
 
 
 

797. Sporophyte of fern is:

 
 
 
 

798. Which of the following shows heterotrichous habit?

 
 
 
 

799. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

801. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

803. The spermatozoids of Cycas are :

 
 
 
 

804. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

812. Some biologists have used the term Mycetozoa for:

 
 
 
 

813. Polystelic condition is found in:

 
 
 
 

814. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

817. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

819. Green plants are classified as :

 
 
 
 

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

 
 
 
 

821. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

824. Meristele of fern is:

 
 
 
 

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

 
 
 
 

826. Rice, pea, potato are :

 
 
 
 

827. 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?

 
 
 
 

828. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Spermatophyta are characterized by producing:

 
 
 
 

833. Generic name of mango is:

 
 
 
 

834. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

835. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

837. Halophiles are the bacteria that require for growth:

 
 
 
 

838. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

841. Vascular cryptogams is the term used for:

 
 
 
 

842. Seeds are characteristically found in:

 
 
 
 

843. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

846. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

848. How is moss different from fern?

 
 
 
 

849. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. An Hfr bacterium is one that contains:

 
 
 
 

853. Embryophyta includes:

 
 
 
 

854. Cell walls of Gram-positive bacteria contain:

 
 
 
 

855. Aflatoxin is produced by:

 
 
 
 

856. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

861. 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:

 
 
 
 

862. Broad spectrum antibiotic is, which:

 
 
 
 

863. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

864. Botulism is a: