Quiz_Random

1. What is special feature of fern archegonia?

 
 
 
 

2. To which class Riccia belongs :

 
 
 
 

3. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

5. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

7. Fruits are not found in:

 
 
 
 

8. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

9. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

11. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

13. Interferon is a:

 
 
 
 

14. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

16. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

18. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

20. Cocci types of bacteria are:

 
 
 
 

21. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Kuru, a human disease is caused by:

 
 
 
 

26. Cycas is different from mango in :

 
 
 
 

27. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. The spur of Pinus roxburghii has :

 
 
 
 

35. The lichens growing on rocks are called :

 
 
 
 

36. Which group of algae have an incipient nucleus?

 
 
 
 

37. In Gymnosperms endosperm is a:

 
 
 
 

38. Antibiotics cure the disease by:

 
 
 
 

39. Typhoid in man is caused by:

 
 
 
 

40. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

45. Who among the following discovered virus?

 
 
 
 

46. Pseudomycelium is found in:

 
 
 
 

47. The chief characteristic of class Ascomycetes is:

 
 
 
 

48. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

50. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

56. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Most common type of conjugation in Spirogyra is :

 
 
 
 

64. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Lichens are ecologically important because :

 
 
 
 

68. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Yeast grows more rapidly in:

 
 
 
 

72. Synzoospore is produced in:

 
 
 
 

73. The chromosomal number in:

 
 
 
 

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

 
 
 
 

75. In Herpes virus DNA is:

 
 
 
 

76. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. The megaspore of Selaginella on germination produces:

 
 
 
 

80. In Selaginella, the microsporangia are:

 
 
 
 

81. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

83. The two conjugating gametangia of Rhizopus are:

 
 
 
 

84. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

86. Placenta in fern is:

 
 
 
 

87. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

89. Mycoplasma are:

 
 
 
 

90. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

92. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

94. The tallest moss in the world is :

 
 
 
 

95. Funaria is a Bryophyta because :

 
 
 
 

96. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

97. 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:

 
 
 
 

98. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

104. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

109. The term stele was given by:

 
 
 
 

110. Methanogens belong to:

 
 
 
 

111. Early blight of potato is caused by:

 
 
 
 

112. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

114. The microsporophylls on the cone of Cycas are :

 
 
 
 

115. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Economic importance of bacteria lies in their being:

 
 
 
 

119. Lichens are pioneers of vegetation in a :

 
 
 
 

120. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. 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:

 
 
 
 

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

 
 
 
 

125. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. Rhizopus and yeast are usually:

 
 
 
 

131. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Each chloroplast in Spirogyra bears :

 
 
 
 

135. Which is a fungicide?

 
 
 
 

136. 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:

 
 
 
 

137. Facultative saprophyte is:

 
 
 
 

138. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

140. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Roots are absent in :

 
 
 
 

147. Saccharomyces is well known for:

 
 
 
 

148. Number of capsomeres forming capsid of TMV is:

 
 
 
 

149. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

151. Viruses have:

 
 
 
 

152. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

154. Ergot of rye is caused by:

 
 
 
 

155. Green plants are classified as :

 
 
 
 

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

 
 
 
 

157. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

159. In Funaria, calyptra is derived from :

 
 
 
 

160. Siphonogamy is found in:

 
 
 
 

161. Which of the following are absent in Mycoplasma?

 
 
 
 

162. In Cycas the fertilization is:

 
 
 
 

163. Which of the following applies to Selaginella?

 
 
 
 

164. Photosynthetic protists belong to:

 
 
 
 

165. Streptomycin is obtained from:

 
 
 
 

166. NBG of Lucknow is now named as:

 
 
 
 

167. Heterotrichous habit means :

 
 
 
 

168. The leafy fern plant represents the:

 
 
 
 

169. Rhizopus belongs to:

 
 
 
 

170. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

172. Fern plants are:

 
 
 
 

173. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

175. Seeds are characteristically found in:

 
 
 
 

176. Gram stain is used to:

 
 
 
 

177. Winged pollen grains are found in :

 
 
 
 

178. Antibiotic has been extracted from :

 
 
 
 

179. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

184. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

186. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

188. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

189. Citrus canker is caused by:

 
 
 
 

190. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

196. The sporangium of fern contains nearly:

 
 
 
 

197. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

200. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

202. Sexual reproduction in Rhizopus is by:

 
 
 
 

203. Mixed cropping helps :

 
 
 
 

204. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

206. Among the algae kelps are :

 
 
 
 

207. The DNA of E coli is:

 
 
 
 

208. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

220. In a diplontic life cycle:

 
 
 
 

221. Plasmids are:

 
 
 
 

222. Which among the following is a shrub?

 
 
 
 

223. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

225. Saccharomyces ludwigii ascus produces:

 
 
 
 

226. Amoeba is a member of the phylum:

 
 
 
 

227. The development of sporangium in Selaginella is:

 
 
 
 

228. Clostridium can:

 
 
 
 

229. Select the wrong statement:

 
 
 
 

230. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

236. 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?

 
 
 
 

237. Who named prion?

 
 
 
 

238. Wine turns sour because of:

 
 
 
 

239. The lambda phase is a:

 
 
 
 

240. Nannandria are:

 
 
 
 

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

 
 
 
 

242. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

244. 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:

 
 
 
 

245. The prothallus of fern represents the plant:

 
 
 
 

246. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

248. Reproduction in Rhizopus is:

 
 
 
 

249. The sporangia of Selaginella are attached:

 
 
 
 

250. Standard size of a herbarium sheet is:

 
 
 
 

251. Meiosis in Ulothrix takes place:

 
 
 
 

252. Which of the following is sago palm?

 
 
 
 

253. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

255. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. Some bacteria cannot be killed easily because of:

 
 
 
 

259. In moss, peristomial teeth are:

 
 
 
 

260. Yeast is a source of:

 
 
 
 

261. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Disease resistant plant varieties can be produced by :

 
 
 
 

266. Red rot of sugarcane is caused by:

 
 
 
 

267. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

269. Heterospory is the production of:

 
 
 
 

270. Endemic plants are characterised by their:

 
 
 
 

271. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

273. In moss, stomata are found:

 
 
 
 

274. In Funaria :

 
 
 
 

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

 
 
 
 

276. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Photosynthetic bacteria have:

 
 
 
 

281. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

283. Helotism word is used for the symbiosis between :

 
 
 
 

284. Late blight of potato is caused by :

 
 
 
 

285. Which of the following is true for Selaginella?

 
 
 
 

286. Mycoplasma contains:

 
 
 
 

287. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

289. How is moss different from fern?

 
 
 
 

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

 
 
 
 

291. Which of the following statements is not correct?

 
 
 
 

292. Photoautotrophic bacteria have:

 
 
 
 

293. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

295. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. Which of the following is a parasitic algae?

 
 
 
 

300. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

302. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Cleavage polyembryony is found in :

 
 
 
 

306. Ectocarpus produces:

 
 
 
 

307. In Cycas which structure is equivalent to stamen?

 
 
 
 

308. Bacteria are considered to be plants because they:

 
 
 
 

309. The smallest bacterium is:

 
 
 
 

310. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

311. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

313. In moss, sporophyte is formed on:

 
 
 
 

314. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Streptomyces falls under:

 
 
 
 

318. In Cycas microsporangia are borne on:

 
 
 
 

319. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

321. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

323. Most of the lichens are composed of :

 
 
 
 

324. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

328. Black rust of wheat is caused by:

 
 
 
 

329. Yeast belongs to class:

 
 
 
 

330. Acetobacter is useful in:

 
 
 
 

331. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

337. The chloroplast of Chlamydomonas are:

 
 
 
 

338. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

340. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

342. Which statement is wrong in regard to bacteria?

 
 
 
 

343. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

345. Pollination in Cycas takes place by :

 
 
 
 

346. Indusium in Dryopteris is:

 
 
 
 

347. The antherozoids of Funaria are :

 
 
 
 

348. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

350. In binomial system most of the words are:

 
 
 
 

351. What is mycorrhiza?

 
 
 
 

352. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

354. The fungi used as food are:

 
 
 
 

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

 
 
 
 

356. Viroids have:

 
 
 
 

357. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. Which condition is found in Cycas?

 
 
 
 

361. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

363. Which is a redwood tree?

 
 
 
 

364. The nucleus of bacteria is:

 
 
 
 

365. Enteric bacteria are those bacteria that live:

 
 
 
 

366. Reserve food in Euglena is:

 
 
 
 

367. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

369. Which bacteria convert nitrate into nitrogen?

 
 
 
 

370. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

373. Downy mildew disease is caused by :

 
 
 
 

374. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

376. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

378. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

380. The leaves of Funaria are :

 
 
 
 

381. Fruits are not found in :

 
 
 
 

382. Isomorphic type alternation of generation is found in:

 
 
 
 

383. Funaria are commonly found :

 
 
 
 

384. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. Funaria is :

 
 
 
 

389. Ovary is absent in:

 
 
 
 

390. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

392. In moss, calyptra is formed from:

 
 
 
 

393. The mode of nutrition of bacteria is usually:

 
 
 
 

394. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

396. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

398. In moss, conducting tissue is made up of

 
 
 
 

399. Sometimes the bacterial cell is enclosed in:

 
 
 
 

400. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

402. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. Club moss is the common name of :

 
 
 
 

406. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

410. Which is not found in bacteria?

 
 
 
 

411. Cycas is:

 
 
 
 

412. Leprosy is caused by:

 
 
 
 

413. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

418. Most appropriate word for protozoans is:

 
 
 
 

419. The gametophyte of fern bears:

 
 
 
 

420. Embryophyta includes:

 
 
 
 

421. Smallpox is caused by:

 
 
 
 

422. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

424. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427. Usually, bacteria reproduce by:

 
 
 
 

428. In Cycas:

 
 
 
 

429. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. Bacteria are found everywhere, except:

 
 
 
 

433. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

438. Heterocysts are found in :

 
 
 
 

439. The sexual reproductive organs in Rhizopus are:

 
 
 
 

440. Spores of which plants have chloroplast:

 
 
 
 

441. Water-net is the name of:

 
 
 
 

442. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

444. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Circular DNA is seen in:

 
 
 
 

448. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

453. Winged seeds are found in :

 
 
 
 

454. In Gymnocarpeae the fruiting body is :

 
 
 
 

455. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

457. Pollination drop is:

 
 
 
 

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

 
 
 
 

459. The fungi are usually:

 
 
 
 

460. Embryophyta includes :

 
 
 
 

461. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

463. Some biologists have used the term Mycetozoa for:

 
 
 
 

464. Psilotum is:

 
 
 
 

465. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. The seedless plants which possess vascular tissues are:

 
 
 
 

469. The Rhizopus is:

 
 
 
 

470. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

472. Azolla and Salvinia both are:

 
 
 
 

473.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

479. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

481. The middle sterile part of capsule is called:

 
 
 
 

482. In moss, reduction division occurs in :

 
 
 
 

483. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

486. In angiosperms double fertilization represents:

 
 
 
 

487. Chief constituents of bordeaux mixture are :

 
 
 
 

488. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

489. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

491. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

493. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

495. Cyathia is characterized by:

 
 
 
 

496. The teeth of peristome of Funaria are :

 
 
 
 

497. Absorptive nutrition is:

 
 
 
 

498. The gametophyte produced by apospory is :

 
 
 
 

499. The stele of Dryopteris is a:

 
 
 
 

500. The disease apple scab is caused by:

 
 
 
 

501. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

503. To which country Antony van Leeuwenhoek belong?

 
 
 
 

504. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

506. A gill of Agaricus:

 
 
 
 

507. Redness of red sea is due to :

 
 
 
 

508. Infective part of virus was discovered by:

 
 
 
 

509. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

512. Which of the following is a monocot?

 
 
 
 

513. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

515. Quarantine regulations are concerned with:

 
 
 
 

516. The spermatozoids of Cycas are :

 
 
 
 

517. Simple polyembryony is found in :

 
 
 
 

518. Iodine is obtained from:

 
 
 
 

519. Which of the following are included in Tracheophyta?

 
 
 
 

520.

 

521. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

523. The largest known bacterium is:

 
 
 
 

524. Genetic material of TMV is:

 
 
 
 

525. Common phycobiont in a lichen is :

 
 
 
 

526. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. 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?

 
 
 
 

534. Etiology includes the study of :

 
 
 
 

535. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

537. 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?

 
 
 
 

538. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. The zygospore in Rhizopus on germination forms:

 
 
 
 

542. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

544. The upper region of moss capsule is :

 
 
 
 

545. Ovary is absent in :

 
 
 
 

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

 
 
 
 

547. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

552. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

554. Cycas revoluta is widely grown as :

 
 
 
 

555.

556. Multicellular and jacketed sex organs are found in :

 
 
 
 

557. Diphtheria is caused by:

 
 
 
 

558. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Pteridophytes are also known as :

 
 
 
 

563. The sori in Dryopteris are found on:

 
 
 
 

564. The antibiotic is obtained from:

 
 
 
 

565. In a bacteriophage, DNA is present in:

 
 
 
 

566. Fern phloem lacks:

 
 
 
 

567. Protozoans are considered animals because these are:

 
 
 
 

568. Which organisms are the oldest life forms?

 
 
 
 

569. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

571. Most primitive embryophytes are placed in:

 
 
 
 

572. The leaves of Funaria are :

 
 
 
 

573. Botulism is a:

 
 
 
 

574. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

576. Sporophyte of fern is:

 
 
 
 

577. Longest known virus is:

 
 
 
 

578. Green plants are classified as:

 
 
 
 

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

 
 
 
 

580. Proembryo in Pinus is :

 
 
 
 

581. Ergot is obtained from :

 
 
 
 

582. Which is a tautonym?

 
 
 
 

583. Which is not true for Escherichia coli?

 
 
 
 

584. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

590. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. Bacteriophages have been used as:

 
 
 
 

594. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

596. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

598. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

600. Lichen show :

 
 
 
 

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

 
 
 
 

602. Mycoplasma are sensitive to:

 
 
 
 

603. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. Pinus gerardiana is :

 
 
 
 

608. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

610. The alga, Spirogyra are found in :

 
 
 
 

611. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

616. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Fern prothallus is:

 
 
 
 

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

 
 
 
 

621. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

623. Azolla growing in paddy fields helps in:

 
 
 
 

624. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

633. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

635. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

638. An Hfr bacterium is one that contains:

 
 
 
 

639. Virion refers to:

 
 
 
 

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

 
 
 
 

641. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

643. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

645. LSD is:

 
 
 
 

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

 
 
 
 

647. Botulinum toxin effects:

 
 
 
 

648. All archaebacteria lack:

 
 
 
 

649. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

651. The roots of Cycas are :

 
 
 
 

652. Where does meiosis occur in yeast?

 
 
 
 

653. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. An alga which is rich in proteins:

 
 
 
 

658. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

659. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

662. Which is the correct statement about Selaginella?

 
 
 
 

663. The central part of Funaria axis is :

 
 
 
 

664. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

666. Select the wrong statement:

 
 
 
 

667. Fruits are not found in Cycas because:

 
 
 
 

668. The chief characteristic of bryophyta is that :

 
 
 
 

669. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

671. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

673. Bacteriophage consists of:

 
 
 
 

674. Bivalved siliceous shell or frustule occur in:

 
 
 
 

675. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

684. The tree fern is:

 
 
 
 

685. Which class of Protozoa includes all parasitic forms?

 
 
 
 

686. The source of litmus is :

 
 
 
 

687. Vascular cryptogams is the term used for:

 
 
 
 

688. The development of Selaginella embryo is:

 
 
 
 

689. The first to isolate a plant virus was:

 
 
 
 

690. Protists which are diploid reproduce sexually by:

 
 
 
 

691. Black rust of wheat is caused by:

 
 
 
 

692. Heterosporous pteridophytes always form:

 
 
 
 

693. Diploxylic vascular bundles are found in:

 
 
 
 

694. The ferns are usually found:

 
 
 
 

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

 
 
 
 

696. The role of meiosis is for:

 
 
 
 

697. The gametophyte of moss has distinct phases :

 
 
 
 

698. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

701. Bacteria growing on synthetic medium are called:

 
 
 
 

702. The sporangiophores in Rhizopus are:

 
 
 
 

703. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

709. Vascular cryptogam is the term used for :

 
 
 
 

710. Facultative parasite is:

 
 
 
 

711. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

717. Cyanophage is a virus that attacks:

 
 
 
 

718. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

720. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

722. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

723. 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?

 
 
 
 

724. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

725. The megasporangium of Selaginella is:

 
 
 
 

726. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

727. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

729. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

731. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

733. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. Which of the following have a prokaryotic cell?

 
 
 
 

738. Which one of the following statement is wrong?

 
 
 
 

739. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

741. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

743. Nitrogen-fixing bacteria may be located:

 
 
 
 

744. Iodine is obtained from :

 
 
 
 

745. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

747. One of the distinctive feature of Spirogyra is :

 
 
 
 

748.

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

 
 
 
 

750. Rhizophore of Selaginella is:

 
 
 
 

751. Generic name of mango is:

 
 
 
 

752. The most important property of yeast is:

 
 
 
 

753. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

763. Metulae are found in:

 
 
 
 

764. Which is an exception to cell theory?

 
 
 
 

765. Which causes red tide?

 
 
 
 

766. Seeds are characteristically found in :

 
 
 
 

767. Fern prothallus produces:

 
 
 
 

768. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

770. Male gametophyte of Selaginella is found:

 
 
 
 

771. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

778. The fungi are mostly:

 
 
 
 

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

 
 
 
 

780. The young leaves of Cycas have :

 
 
 
 

781. Liverworts are included in :

 
 
 
 

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

 
 
 
 

783. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

785. Chemosynthetic bacteria are:

 
 
 
 

786. What is streptomycin?

 
 
 
 

787. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

793. Spirogyra represents the :

 
 
 
 

794. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Pythium debaryanum is the causative agent of:

 
 
 
 

803. Climbers are found in genus:

 
 
 
 

804. Which part of Riccia bears nurse cells?

 
 
 
 

805. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. 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:

 
 
 
 

811. Water bloom is generally caused by :

 
 
 
 

812. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

814. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

816. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

818. Lichens show :

 
 
 
 

819. Virus and bacteriophage are made-up of:

 
 
 
 

820. Which of the following are included in Tracheophyta?

 
 
 
 

821. Protistan algae obtain their food as:

 
 
 
 

822. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

824. The Rhizopus gametes are formed in:

 
 
 
 

825. Ginkgo biloba is a:

 
 
 
 

826. The photosynthetic protists are:

 
 
 
 

827. The phloem of vascular system of Cycas is :

 
 
 
 

828. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

832. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

834. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

837. Pasteurized milk is:

 
 
 
 

838. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

841. Meristele of fern is:

 
 
 
 

842. Aflatoxin is produced as a product in :

 
 
 
 

843. Smut of maize is caused by :

 
 
 
 

844. How a fern differs from a moss?

 
 
 
 

845. Centric discoid form of diatom is:

 
 
 
 

846. Chemosynthetic bacteria are:

 
 
 
 

847. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Ulothrix produces :

 
 
 
 

851. Most primitive embryophytes are placed in :

 
 
 
 

852. . Tapetum develops in:

 
 
 
 

853. Gametophyte is the main plant body in :

 
 
 
 

854. Pneumonia is caused by:

 
 
 
 

855. Cycas is :

 
 
 
 

856. What is a vector?

 
 
 
 

857. Broad spectrum antibiotic is, which:

 
 
 
 

858. E coli is a:

 
 
 
 

859. 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:

 
 
 
 

860. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Which of the following is a heterosporous pteridophyte?

 
 
 
 

864. Germ theory of disease was proposed by: