Quiz_Random

1. Viruses are commonly transmitted in plants through:

 
 
 
 

2. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

4. Penicillin was discovered by:

 
 
 
 

5. Pollination in Cycas takes place by :

 
 
 
 

6. Bacteria were first discovered by:

 
 
 
 

7. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. White rust of crucifers is caused by:

 
 
 
 

11. Cap cells are found in the filament of:

 
 
 
 

12. Lichens are indicators of :

 
 
 
 

13. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

15. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Citrus canker is caused by :

 
 
 
 

20. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

27. Lichens are pioneers of vegetation in a :

 
 
 
 

28. Viruses have:

 
 
 
 

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

 
 
 
 

30. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Fern prothallus produces:

 
 
 
 

34. Special feature of pollen grains of Pinus is :

 
 
 
 

35. Redness of red sea is due to :

 
 
 
 

36. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

38. The genetic material of poxvirus is:

 
 
 
 

39. Select the wrong statement:

 
 
 
 

40. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

46. The leaves of Funaria are :

 
 
 
 

47. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

49. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

51. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Which have the largest antherozoid?

 
 
 
 

55. Bentham and Hooker placed gymnosperms:

 
 
 
 

56. The fungi are mostly:

 
 
 
 

57. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

59. What is the role of nitrifying bacteria?

 
 
 
 

60. In Cycas:

 
 
 
 

61. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. The spermatozoids of Cycas are :

 
 
 
 

65. Cryptogams include :

 
 
 
 

66. Seeds are characteristically found in :

 
 
 
 

67. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

69. Rhizophore of Selaginella is:

 
 
 
 

70. Which of the following shows heterotrichous habit?

 
 
 
 

71. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

73. Acetobacter is useful in:

 
 
 
 

74. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

76. In Cycas microsporangia are borne on:

 
 
 
 

77. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

79. The antibiotic is obtained from:

 
 
 
 

80. Generic name of mango is:

 
 
 
 

81. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. The chief characteristic of class Ascomycetes is:

 
 
 
 

85. Liverworts are included in :

 
 
 
 

86. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

91. The sporophyte of Riccia is represented by :

 
 
 
 

92. Pneumonia is caused by:

 
 
 
 

93. Who discovered cyanophages?

 
 
 
 

94. Why is Cycas called a living fossil?

 
 
 
 

95. Roots are absent in :

 
 
 
 

96. Vascular cryptogams is the term used for:

 
 
 
 

97. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

99. Most of the algae are :

 
 
 
 

100. An Hfr bacterium is one that contains:

 
 
 
 

101. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

103. Cycas is :

 
 
 
 

104. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

109. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

113. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

115. Which part of Riccia bears nurse cells?

 
 
 
 

116. Bacteriophages have been used as:

 
 
 
 

117. Which is an exception to cell theory?

 
 
 
 

118. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

120. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

123. How is moss different from fern?

 
 
 
 

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

 
 
 
 

125. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

127. The two conjugating gametangia of Rhizopus are:

 
 
 
 

128. Which is absent from the xylem of Cycas?

 
 
 
 

129. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

135. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

137. Ergot is obtained from :

 
 
 
 

138. Amoeba is a member of the phylum:

 
 
 
 

139. Indusium in Dryopteris is:

 
 
 
 

140. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

142. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

144. The coralloid roots are :

 
 
 
 

145.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Ovules are not found enclosed in ovary in :

 
 
 
 

150. The fungi used as food are:

 
 
 
 

151. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

153. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

155. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

157. The source of litmus is :

 
 
 
 

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

 
 
 
 

159. Black rust of wheat is caused by:

 
 
 
 

160. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

163. In binomial system most of the words are:

 
 
 
 

164. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

166. Cycas is:

 
 
 
 

167. Desired type of Cycas can be grown by:

 
 
 
 

168. Rhizopus and yeast are usually:

 
 
 
 

169. Diploxylic vascular bundles are found in:

 
 
 
 

170. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. Which of the following is sago palm?

 
 
 
 

174. Clostridium can:

 
 
 
 

175. The upper region of moss capsule is :

 
 
 
 

176. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

177. Virus and bacteriophage are made-up of:

 
 
 
 

178. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

182. Lichens form the first community in

 
 
 
 

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

 
 
 
 

184. Which of the following is true for viruses?

 
 
 
 

185. In moss, sporogenous tissue arises from:

 
 
 
 

186. Rhizopus belongs to:

 
 
 
 

187. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. In moss, conducting tissue is made up of

 
 
 
 

191. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

193. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

195. In Pteris, the roots are:

 
 
 
 

196. Which bacteria convert nitrate into nitrogen?

 
 
 
 

197. Who named prion?

 
 
 
 

198. Woody climbers are known as :

 
 
 
 

199. The young leaves of Cycas have :

 
 
 
 

200. Saccharomyces is well known for:

 
 
 
 

201. Which class of Protozoa includes all parasitic forms?

 
 
 
 

202. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

204. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

209. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

211. What is absent in Deuteromycetes?

 
 
 
 

212. Nannandria are:

 
 
 
 

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

 
 
 
 

214. Facultative saprophyte is:

 
 
 
 

215. Sexual reproduction of lichen is due to :

 
 
 
 

216. Plasmids are:

 
 
 
 

217. Azolla and Salvinia both are:

 
 
 
 

218. Spermatophyta are characterized by producing:

 
 
 
 

219. Psilotum is:

 
 
 
 

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

 
 
 
 

221. The zoospores of Ulothrix are :

 
 
 
 

222. Which of the following statements is not correct?

 
 
 
 

223. Coenogamete is found in:

 
 
 
 

224. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. Multicellular and jacketed sex organs are found in :

 
 
 
 

228. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. What is a vector?

 
 
 
 

233. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

235. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Bryophyta have been placed in cryptogams because:

 
 
 
 

239. Pinus is:

 
 
 
 

240. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

243. The first to isolate a plant virus was:

 
 
 
 

244. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

246. Cocci types of bacteria are:

 
 
 
 

247. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

249. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

253. Pseudomycelium is found in:

 
 
 
 

254. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

256. Which of the following statement is correct?

 
 
 
 

257. Saccharomyces ludwigii ascus produces:

 
 
 
 

258. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. Antibiotics cure the disease by:

 
 
 
 

262. Which is a tautonym?

 
 
 
 

263. Enteric bacteria are those bacteria that live:

 
 
 
 

264. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

266. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

268. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

270. Climbers are found in genus:

 
 
 
 

271. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

273. Spirogyra differs from moss protonema in having :

 
 
 
 

274. In Funaria, calyptra is derived from :

 
 
 
 

275. Which is an edible fungus?

 
 
 
 

276. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

278. TMV was isolated in crystalline form by:

 
 
 
 

279. Late blight of potato is caused by :

 
 
 
 

280. Standard size of a herbarium sheet is:

 
 
 
 

281. 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?

 
 
 
 

282. In Gymnosperms endosperm is a:

 
 
 
 

283. Small epidermal swellings due to infection are called :

 
 
 
 

284. The fern plant is:

 
 
 
 

285. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

287. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

289. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

291. The most important property of yeast is:

 
 
 
 

292. In moss, peristomial teeth are:

 
 
 
 

293. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

298. Pasteurization of milk involves heating for:

 
 
 
 

299. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

301. The male gametes of Pinus are :

 
 
 
 

302. Smut of maize is caused by :

 
 
 
 

303. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

305. In a diplontic life cycle:

 
 
 
 

306. Reproduction in Cycas takes place by :

 
 
 
 

307. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

309. Lichens reproduce by :

 
 
 
 

310. In Gymnocarpeae the fruiting body is :

 
 
 
 

311. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

313. The fungi are usually:

 
 
 
 

314. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

323. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

329. Photoautotrophic bacteria have:

 
 
 
 

330. Mixed cropping helps :

 
 
 
 

331. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

334. In moss, reduction division occurs in :

 
 
 
 

335. Reproduction in Rhizopus is:

 
 
 
 

336. Which is not true for Escherichia coli?

 
 
 
 

337. Ulothrix produces :

 
 
 
 

338. Lichen show :

 
 
 
 

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

 
 
 
 

340. What is streptomycin?

 
 
 
 

341. Placenta in fern is:

 
 
 
 

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

 
 
 
 

343. Maximum diversity of life forms occurs in :

 
 
 
 

344. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

347. The leaves of Funaria are :

 
 
 
 

348. Protists which are diploid reproduce sexually by:

 
 
 
 

349. Typhoid in man is caused by:

 
 
 
 

350. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. Majority of lichens are :

 
 
 
 

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

 
 
 
 

358. Mycoplasma was discovered by:

 
 
 
 

359. What is mycorrhiza?

 
 
 
 

360. One of the distinctive feature of Spirogyra is :

 
 
 
 

361. The largest alga is:

 
 
 
 

362. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Cycas revoluta is widely grown as :

 
 
 
 

366. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

368. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

376. Embryophyta includes :

 
 
 
 

377. Meristele of fern is:

 
 
 
 

378. Some diseases caused by bacteria are:

 
 
 
 

379. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

381. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

391. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

394. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

399. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

401. Fern prothallus is:

 
 
 
 

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

 
 
 
 

403. Chemosynthetic bacteria are:

 
 
 
 

404. The Rhizopus gametes are formed in:

 
 
 
 

405. Asexual reproductive body of Volvox is called:

 
 
 
 

406. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

414. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

416. Circular DNA is seen in:

 
 
 
 

417. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

418. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

420. The sporangium of fern contains nearly:

 
 
 
 

421. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Black rust of wheat is caused by:

 
 
 
 

426. All archaebacteria lack:

 
 
 
 

427. Gametophyte is the main plant body in :

 
 
 
 

428. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

430. Male gametophyte of Selaginella is found:

 
 
 
 

431. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

433. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

435. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

437. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

439. Most resistant spore in bacteria is:

 
 
 
 

440. Common phycobiont in a lichen is :

 
 
 
 

441. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

443. Germ theory of disease was proposed by:

 
 
 
 

444. NBG of Lucknow is now named as:

 
 
 
 

445. The phloem of vascular system of Cycas is :

 
 
 
 

446. Viruses are considered to be:

 
 
 
 

447. Endemic plants are characterised by their:

 
 
 
 

448. To which country Antony van Leeuwenhoek belong?

 
 
 
 

449. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

450. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

452. Longest known virus is:

 
 
 
 

453. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

455. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

457. The gametophyte of fern is as:

 
 
 
 

458. The chief characteristic of bryophyta is that :

 
 
 
 

459. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

461. Interferon is a:

 
 
 
 

462. To which class Riccia belongs :

 
 
 
 

463. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. The mycelium of Rhizopus is:

 
 
 
 

468. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

470. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

472. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

480. In moss, calyptra is formed from:

 
 
 
 

481. The Rhizopus is:

 
 
 
 

482. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

484. Vascular tissue is found in :

 
 
 
 

485. Pollination drop is:

 
 
 
 

486. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

487. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. Mycoplasma are sensitive to:

 
 
 
 

491. Diphtheria is caused by:

 
 
 
 

492. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

497. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

502. Which is a fungicide?

 
 
 
 

503. Facultative parasite is:

 
 
 
 

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

 
 
 
 

505. Fern phloem lacks:

 
 
 
 

506. Cyathia is characterized by:

 
 
 
 

507. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

509. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

511. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Which of the following is a heterosporous pteridophyte?

 
 
 
 

515. The chloroplast of Chlamydomonas are:

 
 
 
 

516. Red rot of sugarcane is caused by:

 
 
 
 

517. Which lichen is called Reindeer moss?

 
 
 
 

518. The similarity between cyanobacteria and bacteria:

 
 
 
 

519. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

521. Which is a gametophytic tissue?

 
 
 
 

522. Mycoplasmas are not viruses in nature because:

 
 
 
 

523. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

525.

526.

 

527. Which of the following have algal zone?

 
 
 
 

528. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Simple polyembryony is found in :

 
 
 
 

532. The tallest moss in the world is :

 
 
 
 

533. Most appropriate word for protozoans is:

 
 
 
 

534. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

537. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

538. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

544. E coli is a:

 
 
 
 

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

 
 
 
 

546. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

548. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

550. The gametophyte produced by apospory is :

 
 
 
 

551. Discovery of penicillin was based on:

 
 
 
 

552. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

554. Lichens show :

 
 
 
 

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

 
 
 
 

556. Acellular slime mold is/are:

 
 
 
 

557. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

558. Viroids have:

 
 
 
 

559. Yeast is a source of:

 
 
 
 

560. Red rot of sugarcane is caused by :

 
 
 
 

561. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

563. Triple antigen injection or vaccine are for:

 
 
 
 

564. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

566. Late blight of potato is caused by:

 
 
 
 

567. 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:

 
 
 
 

568. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

570. Which condition is found in Cycas?

 
 
 
 

571. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Bryophyta have a special character from other plants:

 
 
 
 

577. In moss, stomata are found:

 
 
 
 

578. Fern plants are:

 
 
 
 

579. The ferns are usually found:

 
 
 
 

580. First animal pathogenic virus was discovered by:

 
 
 
 

581. The lambda phase is a:

 
 
 
 

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

 
 
 
 

583. Funaria is :

 
 
 
 

584. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

586. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

588. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

590. The stele of Dryopteris is a:

 
 
 
 

591. Streptomyces falls under:

 
 
 
 

592. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

594. Protistan algae obtain their food as:

 
 
 
 

595. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

597. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

600. The fungi that grow on wood are called:

 
 
 
 

601. Fruits are not found in:

 
 
 
 

602. The tree fern is:

 
 
 
 

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

 
 
 
 

604. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

607. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

609. What are plasmids?

 
 
 
 

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

 
 
 
 

611. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Green plants are classified as :

 
 
 
 

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

 
 
 
 

621. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

623. Bacteria are placed under:

 
 
 
 

624. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Ovary is absent in :

 
 
 
 

629. Siphonogamy is found in:

 
 
 
 

630. Which is the nuclear material in bacteria?

 
 
 
 

631. Fertility of the soil is increased by:

 
 
 
 

632. Club moss is the common name of :

 
 
 
 

633. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. Absorptive nutrition is:

 
 
 
 

637. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

639. Which of the following is a monocot?

 
 
 
 

640. In Funaria :

 
 
 
 

641. Pinus gerardiana is :

 
 
 
 

642. The vascular bundles of Cycas stem are :

 
 
 
 

643. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

645. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

647. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

649. What is special feature of fern archegonia?

 
 
 
 

650. Most of the lichens are composed of :

 
 
 
 

651. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

652. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

654. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

657. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

660. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

662. Cleavage polyembryony is found in :

 
 
 
 

663. Helotism word is used for the symbiosis between :

 
 
 
 

664. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

666. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

668. Linnaeus is credited with introducing:

 
 
 
 

669. The orders generally have the uniform endings:

 
 
 
 

670. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

672. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

673. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Pteridophyta are also called:

 
 
 
 

677. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

679. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

681. Which of the following is true for Selaginella?

 
 
 
 

682. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

684. The smallest unit of classification is:

 
 
 
 

685. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

687. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

689. Select the wrong statement:

 
 
 
 

690. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

692. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

694. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

696. Sometimes the bacterial cell is enclosed in:

 
 
 
 

697. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

699. Vascular cryptogam is the term used for :

 
 
 
 

700. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

703.

704. Nitrifying bacteria play an important role by converting:

 
 
 
 

705. The antherozoids of Funaria are :

 
 
 
 

706. Ectocarpus produces:

 
 
 
 

707. Club moss and Peat moss belong to:

 
 
 
 

708. The development of Selaginella embryo is:

 
 
 
 

709. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

711. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

713. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

715. Funaria is a Bryophyta because :

 
 
 
 

716. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

718. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

720. Which one of the following is a monocot?

 
 
 
 

721. Penicillin is obtained from:

 
 
 
 

722. Fruiting body of lichens is :

 
 
 
 

723. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

725. Cycas is different from mango in :

 
 
 
 

726. All algae have:

 
 
 
 

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

 
 
 
 

728. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

732. In Cycas which structure is equivalent to stamen?

 
 
 
 

733. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

734. Proembryo in Pinus is :

 
 
 
 

735. Water-net is the name of:

 
 
 
 

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

 
 
 
 

737. 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?

 
 
 
 

738. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

741. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Total parasites belong to:

 
 
 
 

747. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

749. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

751. Winged seeds are found in :

 
 
 
 

752. 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?

 
 
 
 

753. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

755. Protozoans are considered animals because these are:

 
 
 
 

756. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

759. Antibiotic has been extracted from :

 
 
 
 

760. Pythium debaryanum is the causative agent of:

 
 
 
 

761. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

770. Gram stain is used to:

 
 
 
 

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

 
 
 
 

772. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

774. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

776. The term stele was given by:

 
 
 
 

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

 
 
 
 

778. Bacteria differ from viruses in being sensitive to:

 
 
 
 

779. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

781. Ginkgo biloba is a:

 
 
 
 

782. Seeds are characteristically found in:

 
 
 
 

783. The megasporangium of Selaginella is:

 
 
 
 

784. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

786. The leaf of Cycas shows:

 
 
 
 

787. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

789. Which is not found in bacteria?

 
 
 
 

790. Iodine is obtained from:

 
 
 
 

791. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

796. The truncated cone of HIV consists of:

 
 
 
 

797. Metulae are found in:

 
 
 
 

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

 
 
 
 

799. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

800. Which is the correct statement about Selaginella?

 
 
 
 

801. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Which group of algae have an incipient nucleus?

 
 
 
 

808. Reserve food in Euglena is:

 
 
 
 

809. Heterospory is the production of:

 
 
 
 

810. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

815. Tautonyms are illegitimate in:

 
 
 
 

816. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

818. The root nodules of leguminous plants contain:

 
 
 
 

819. The roots of Cycas are :

 
 
 
 

820. 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:

 
 
 
 

821. In tracheophyta:

 
 
 
 

822. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

832. Parmelia belongs to :

 
 
 
 

833. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

835. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

837. The plants of Funaria grow :

 
 
 
 

838. 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:

 
 
 
 

839. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. Which causes red tide?

 
 
 
 

843. The DNA of E coli is:

 
 
 
 

844. Which of the following does not contain chlorophyll?

 
 
 
 

845. Pasteur is famous for his:

 
 
 
 

846. Which of the following applies to Selaginella?

 
 
 
 

847. The flagella of Chlamydomonas are:

 
 
 
 

848. Economic importance of bacteria lies in their being:

 
 
 
 

849. Fruits are not found in :

 
 
 
 

850. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

852. The mode of nutrition of bacteria is usually:

 
 
 
 

853. In Pteris, the archegonia are present:

 
 
 
 

854. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

856. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

858. Botulism is a:

 
 
 
 

859. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

861. Embryophyta includes:

 
 
 
 

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

 
 
 
 

863. A gill of Agaricus:

 
 
 
 

864. Rice, pea, potato are :