Quiz_Random

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

 
 
 
 

2. Club moss is the common name of :

 
 
 
 

3. Streptomyces falls under:

 
 
 
 

4. Early blight of potato is caused by:

 
 
 
 

5. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

7. Which is not found in bacteria?

 
 
 
 

8. Fern prothallus produces:

 
 
 
 

9. Ethylene oxide is widely used to:

 
 
 
 

10. Bacteria are considered to be plants because they:

 
 
 
 

11. Polystelic condition is found in:

 
 
 
 

12. The vascular bundles of Cycas stem are :

 
 
 
 

13. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

20. Photoautotrophic bacteria have:

 
 
 
 

21. Lichen show :

 
 
 
 

22. The development of sporangium in Selaginella is:

 
 
 
 

23. The sporophyte of Riccia is represented by :

 
 
 
 

24. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

26. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Botulism is a:

 
 
 
 

30. Banana bunchy top is caused by :

 
 
 
 

31. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

33. Which of the following is a monocot?

 
 
 
 

34. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

36. The megaspore of Selaginella on germination produces:

 
 
 
 

37. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

39. Which of the following have algal zone?

 
 
 
 

40. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

42. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

44. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

49. Which among the following is a shrub?

 
 
 
 

50. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

52. Most primitive kind of flower is represented by:

 
 
 
 

53. Pythium debaryanum is the causative agent of:

 
 
 
 

54. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

55. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Reserve food in Euglena is:

 
 
 
 

59. Aflatoxin is produced as a product in :

 
 
 
 

60. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. Green plants are classified as:

 
 
 
 

64. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

69. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Gametophyte is the main plant body in :

 
 
 
 

74. In Gymnosperms endosperm is a:

 
 
 
 

75. Ovary is absent in:

 
 
 
 

76. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Virion refers to:

 
 
 
 

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

 
 
 
 

81. Vascular cryptogams is the term used for:

 
 
 
 

82. The ferns are usually found:

 
 
 
 

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

 
 
 
 

84. Clostridium can:

 
 
 
 

85. Mycoplasma contains:

 
 
 
 

86. Photosynthetic bacteria have:

 
 
 
 

87. Which of the following have a prokaryotic cell?

 
 
 
 

88. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

90. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

92. Cyanophage is a virus that attacks:

 
 
 
 

93. The teeth of peristome of Funaria are :

 
 
 
 

94. Circular DNA is seen in:

 
 
 
 

95. Pollination drop is:

 
 
 
 

96. Longest known virus is:

 
 
 
 

97. The young leaves of Cycas have :

 
 
 
 

98. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Red rot of sugarcane is caused by :

 
 
 
 

102. Number of capsomeres forming capsid of TMV is:

 
 
 
 

103. Ectocarpus produces:

 
 
 
 

104. NBG of Lucknow is now named as:

 
 
 
 

105. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

107. How is moss different from fern?

 
 
 
 

108. Pasteurization of milk involves heating for:

 
 
 
 

109. The source of litmus is :

 
 
 
 

110. Who discovered streptomycin?

 
 
 
 

111. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

114. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

116. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. Which group of algae have an incipient nucleus?

 
 
 
 

120. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

122. The lambda phase is a:

 
 
 
 

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

 
 
 
 

124. 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?

 
 
 
 

125. Pneumonia is caused by:

 
 
 
 

126. Bacteria growing on synthetic medium are called:

 
 
 
 

127. Where does meiosis occur in yeast?

 
 
 
 

128. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

129. In Cycas:

 
 
 
 

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

 
 
 
 

131. In moss, conducting tissue is made up of

 
 
 
 

132. Sexual reproduction of lichen is due to :

 
 
 
 

133. In Cycas which structure is equivalent to stamen?

 
 
 
 

134. Red rot of sugarcane is caused by:

 
 
 
 

135. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

137. Which is an exception to cell theory?

 
 
 
 

138. Aflatoxin is produced by:

 
 
 
 

139. The root nodules of leguminous plants contain:

 
 
 
 

140. Mostly type of zygospore in Ulothrix is:

 
 
 
 

141. 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:

 
 
 
 

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

 
 
 
 

143. Which is an edible fungus?

 
 
 
 

144. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

147. Some bacteria cannot be killed easily because of:

 
 
 
 

148. Saccharomyces is well known for:

 
 
 
 

149. Which of the following applies to Selaginella?

 
 
 
 

150. Selaginella differs from Moss in having:

 
 
 
 

151. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

156. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

158. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

159. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

161. Bentham and Hooker placed gymnosperms:

 
 
 
 

162. Bacteria are placed under:

 
 
 
 

163. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Disease resistant plant varieties can be produced by :

 
 
 
 

181. Yeast is a source of:

 
 
 
 

182. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

184. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

188. The chromosomal number in:

 
 
 
 

189. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Centric discoid form of diatom is:

 
 
 
 

198. The coralloid roots are :

 
 
 
 

199. The disease apple scab is caused by:

 
 
 
 

200. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

202. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

210. Standard size of a herbarium sheet is:

 
 
 
 

211. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

213. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

215. Quarantine regulations are concerned with:

 
 
 
 

216. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

218. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

220. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

222. Which is a gametophytic tissue?

 
 
 
 

223. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

225. Downy mildew disease is caused by :

 
 
 
 

226. Fruits are not found in :

 
 
 
 

227. The rhizoids of Funaria are :

 
 
 
 

228. In dinoflagellates, the two flagella are:

 
 
 
 

229. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

232. In Pteris, the archegonia are present:

 
 
 
 

233. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

235. Desired type of Cycas can be grown by:

 
 
 
 

236. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

239. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

241. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

243.

244. Rhizophore of Selaginella is:

 
 
 
 

245. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

247. The group algae possesses representatives belonging to kingdom:

 
 
 
 

248. 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:

 
 
 
 

249. Woody climbers are known as :

 
 
 
 

250. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

252. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

254. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

262. Redness of red sea is due to :

 
 
 
 

263. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

271. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

277. Embryophyta includes :

 
 
 
 

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

 
 
 
 

279. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

280. Pinus microsporophyll bears:

 
 
 
 

281. Fertility of the soil is increased by:

 
 
 
 

282. Ovules are not found enclosed in ovary in :

 
 
 
 

283. In Pteris, the roots are:

 
 
 
 

284. Coenogamete is found in:

 
 
 
 

285. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

287. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

293. 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:

 
 
 
 

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

 
 
 
 

295. Pollination in Cycas takes place by :

 
 
 
 

296. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

298. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. Viruses are commonly transmitted in plants through:

 
 
 
 

302. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

304. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

306. What are Cyanobacteria?

 
 
 
 

307. 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?

 
 
 
 

308. Sexual reproduction in Rhizopus is by:

 
 
 
 

309. Mycoplasma are:

 
 
 
 

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

 
 
 
 

311. Embryo formation is not known in :

 
 
 
 

312. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

314. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

316. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

319. Black rust of wheat is caused by:

 
 
 
 

320. Cycas is :

 
 
 
 

321. The similarity between cyanobacteria and bacteria:

 
 
 
 

322. Fruiting body of lichens is :

 
 
 
 

323. The alga, Spirogyra are found in :

 
 
 
 

324. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

325. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

327. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Smallpox is caused by:

 
 
 
 

331. The sporophyte of Riccia is :

 
 
 
 

332. Fruits are not found in:

 
 
 
 

333. The DNA of E coli is:

 
 
 
 

334. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

336. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

339. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

348. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

350. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Germination of the seed of Pinus is :

 
 
 
 

355. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

357. Viroids have:

 
 
 
 

358. Lichens are pioneers of vegetation in a :

 
 
 
 

359. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

361. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

363. Azolla and Salvinia both are:

 
 
 
 

364. Mixed cropping helps :

 
 
 
 

365. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

367. Cycas is similar to a mustard plant :

 
 
 
 

368. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

371. Which of the following shows heterotrichous habit?

 
 
 
 

372. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

377. All algae have:

 
 
 
 

378. Gram stain is used to:

 
 
 
 

379. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

381. The smallest bacterium is:

 
 
 
 

382. Enteric bacteria are those bacteria that live:

 
 
 
 

383. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

387. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. Iodine is obtained from:

 
 
 
 

391. Broad spectrum antibiotic is, which:

 
 
 
 

392. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. 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:

 
 
 
 

396. Pinus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

401. Reproduction in Cycas takes place by :

 
 
 
 

402. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

404. Pteridophyta are also called:

 
 
 
 

405. Total parasites belong to:

 
 
 
 

406. Bryophyta have a special character from other plants:

 
 
 
 

407. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

409. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. Mycoplasmas are not viruses in nature because:

 
 
 
 

413. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

415. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

420. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

423. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

426. 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:

 
 
 
 

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

 
 
 
 

428. To which class Riccia belongs :

 
 
 
 

429. Who among the following discovered virus?

 
 
 
 

430. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

432. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

434. Indusium in Dryopteris is:

 
 
 
 

435. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

437. The zygospore in Rhizopus on germination forms:

 
 
 
 

438. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

441. Winged seeds are found in :

 
 
 
 

442. In moss, calyptra is formed from:

 
 
 
 

443. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

445. Roots are absent in :

 
 
 
 

446. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

456. Winged pollen grains are found in :

 
 
 
 

457. Bacteria were first discovered by:

 
 
 
 

458. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

461. Which statement is wrong in regard to bacteria?

 
 
 
 

462. The largest alga is:

 
 
 
 

463. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

464. Spirogyra differs from moss protonema in having :

 
 
 
 

465. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

467. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

469. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

476. Nannandria are:

 
 
 
 

477. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

479. Plasmids are:

 
 
 
 

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

 
 
 
 

481. Protistan algae obtain their food as:

 
 
 
 

482. White rust of crucifers is caused by:

 
 
 
 

483. Red rot of sugarcane is caused by :

 
 
 
 

484. John Hutchinson divided dicots into two divisions:

 
 
 
 

485. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

487. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

489. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

493. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

495. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

497. The genetic material of poxvirus is:

 
 
 
 

498. Maximum diversity of life forms occurs in :

 
 
 
 

499. Liverworts are included in :

 
 
 
 

500. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. The chloroplast in Ulothrix is :

 
 
 
 

505. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

507. Penicillin was discovered by:

 
 
 
 

508. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

510. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

512. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

514. In angiosperms double fertilization represents:

 
 
 
 

515. Heterospory and ligulate leaves are a feature of:

 
 
 
 

516. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

520. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. In tracheophyta:

 
 
 
 

524. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

525. Mucilaginous canals in Cycas are found in :

 
 
 
 

526. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. 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?

 
 
 
 

530. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. 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?

 
 
 
 

535. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

539. In Funaria, calyptra is derived from :

 
 
 
 

540. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

542. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

544. The orders generally have the uniform endings:

 
 
 
 

545. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

547. Who named prion?

 
 
 
 

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

 
 
 
 

549. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

550. Facultative parasite is:

 
 
 
 

551. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

554. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

556. Which is a tautonym?

 
 
 
 

557. Ulothrix produces :

 
 
 
 

558. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. Funaria can be differentiated from Cycas :

 
 
 
 

562. Which of the following is sago palm?

 
 
 
 

563. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

566. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

568. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

569. The leaves of Funaria are :

 
 
 
 

570. Tautonyms are illegitimate in:

 
 
 
 

571. 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:

 
 
 
 

572. Who discovered cyanophages?

 
 
 
 

573. The fungi are usually:

 
 
 
 

574. Mycoplasma is different from bacteria due to:

 
 
 
 

575. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

579. Isomorphic type alternation of generation is found in:

 
 
 
 

580. The ascus of yeast contains:

 
 
 
 

581. The lichens growing on rocks are called :

 
 
 
 

582. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. The tree fern is:

 
 
 
 

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

 
 
 
 

587. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

589. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

591. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

593. Simple polyembryony is found in :

 
 
 
 

594. Gymnosperms could also be called as:

 
 
 
 

595. Funaria is :

 
 
 
 

596. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

598. Lichens show :

 
 
 
 

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

 
 
 
 

600. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

602. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

604. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

606. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

608. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Cap cells are found in the filament of:

 
 
 
 

612. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

614. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

616. Which is a fungicide?

 
 
 
 

617.

 

618. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

620. The leaf of Cycas shows:

 
 
 
 

621. Water-net is the name of:

 
 
 
 

622. Vascular cryptogam is the term used for :

 
 
 
 

623.

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

 
 
 
 

625. The archegonia in Selaginella develop on:

 
 
 
 

626. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

629. True sexuality is not found in:

 
 
 
 

630. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

633. Most primitive embryophytes are placed in:

 
 
 
 

634. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. The gametophyte produced by apospory is :

 
 
 
 

638. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

639. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

640. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

644. Heterocysts are found in :

 
 
 
 

645. Late blight of potato is caused by:

 
 
 
 

646. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. Lichens are ecologically important because :

 
 
 
 

650. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

652. Select the wrong statement:

 
 
 
 

653. Nitrogen-fixing bacteria may be located:

 
 
 
 

654. In a diplontic life cycle:

 
 
 
 

655. TMV was isolated in crystalline form by:

 
 
 
 

656. Viruses have:

 
 
 
 

657. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

659. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

660. Ginkgo biloba is a:

 
 
 
 

661. LSD is:

 
 
 
 

662. What are plasmids?

 
 
 
 

663. E coli is a:

 
 
 
 

664. Choose the correct statement about Spirogyra:

 
 
 
 

665. Typhoid in man is caused by:

 
 
 
 

666. The plants of Funaria grow :

 
 
 
 

667. Ovules are not found enclosed in ovary of:

 
 
 
 

668. One of the distinctive feature of Spirogyra is :

 
 
 
 

669. The Rhizopus is:

 
 
 
 

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

 
 
 
 

671. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

674. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

676. Asexual reproductive body of Volvox is called:

 
 
 
 

677. Psilotum is:

 
 
 
 

678. Cycas plant in appearance resembles :

 
 
 
 

679. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

680. In Cycas microsporangia are borne on:

 
 
 
 

681. The sporangiophores in Rhizopus are:

 
 
 
 

682. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

684. Vascular tissue is found in :

 
 
 
 

685. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

688. Spirogyra represents the :

 
 
 
 

689. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. Ovary is absent in :

 
 
 
 

697. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Cyathia is characterized by:

 
 
 
 

703. The first to isolate a plant virus was:

 
 
 
 

704. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

706. Sporophyte of Funaria is :

 
 
 
 

707. Interferon is a:

 
 
 
 

708. Siphonogamy is found in:

 
 
 
 

709. Citrus canker is caused by:

 
 
 
 

710. In moss, reduction division occurs in :

 
 
 
 

711. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

714. The term stele was given by:

 
 
 
 

715. Bacteria which are spherical are called:

 
 
 
 

716. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

718. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

720. The mode of nutrition of bacteria is usually:

 
 
 
 

721. Heterosporous pteridophytes always form:

 
 
 
 

722. Ergot is obtained from :

 
 
 
 

723. Funaria is :

 
 
 
 

724. Metulae are found in:

 
 
 
 

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

 
 
 
 

726. The two conjugating gametangia of Rhizopus are:

 
 
 
 

727. The mycelium of Rhizopus is:

 
 
 
 

728. Leaf spot of groundnut is caused by :

 
 
 
 

729. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

731. Yeast grows more rapidly in:

 
 
 
 

732. The microsporophylls on the cone of Cycas are :

 
 
 
 

733. Oswald Tippo’s classification is:

 
 
 
 

734. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

736. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

739. Absorptive nutrition is:

 
 
 
 

740. Which of the following is true for viruses?

 
 
 
 

741. Proembryo in Pinus is :

 
 
 
 

742. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

744. Male gametophyte of Selaginella is found:

 
 
 
 

745. Vegetative reproduction in Cycas is by means of :

 
 
 
 

746. What is a vector?

 
 
 
 

747. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

749. Climbers are found in genus:

 
 
 
 

750. Select the wrong statement:

 
 
 
 

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

 
 
 
 

752. Most of the algae are :

 
 
 
 

753. The fungi that grow on wood are called:

 
 
 
 

754. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

756. Most primitive group of vascular plants are:

 
 
 
 

757. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

758. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

760. Reproduction in Rhizopus is:

 
 
 
 

761. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

763. Lichens form the first community in

 
 
 
 

764. Fern plants are:

 
 
 
 

765. Fern prothallus is:

 
 
 
 

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

 
 
 
 

767. The fungi used as food are:

 
 
 
 

768. The sexual reproductive organs in Rhizopus are:

 
 
 
 

769. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

770. Rhizoids of Riccia are :

 
 
 
 

771. Mycoplasma are sensitive to:

 
 
 
 

772. In binomial system most of the words are:

 
 
 
 

773. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

774. In Funaria :

 
 
 
 

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

 
 
 
 

776. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

778. Green plants are classified as :

 
 
 
 

779. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. Placenta in fern is:

 
 
 
 

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

 
 
 
 

785. The role of meiosis is for:

 
 
 
 

786. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

788.

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

 
 
 
 

790. Most primitive embryophytes are placed in :

 
 
 
 

791. In Herpes virus DNA is:

 
 
 
 

792. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

795. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

797. Which of the following statement is correct?

 
 
 
 

798. Which is the correct statement about Selaginella?

 
 
 
 

799. Which of the following are included in Tracheophyta?

 
 
 
 

800. First animal pathogenic virus was discovered by:

 
 
 
 

801. Linnaeus is credited with introducing:

 
 
 
 

802. Meristele of fern is:

 
 
 
 

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

 
 
 
 

804. Meiosis in Ulothrix takes place:

 
 
 
 

805. What is special feature of fern archegonia?

 
 
 
 

806. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

808. Photosynthetic protists belong to:

 
 
 
 

809. Facultative saprophyte is:

 
 
 
 

810. How a fern differs from a moss?

 
 
 
 

811. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

813. Helotism word is used for the symbiosis between :

 
 
 
 

814. The truncated cone of HIV consists of:

 
 
 
 

815. In Selaginella, the microsporangia are:

 
 
 
 

816. Which one of the following is a monocot?

 
 
 
 

817. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

819. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. All protozoans possess:

 
 
 
 

824. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

827. Usually, bacteria reproduce by:

 
 
 
 

828. Rhizopus and yeast are usually:

 
 
 
 

829. Cycas is:

 
 
 
 

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

 
 
 
 

831. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

833. Acellular slime mold is/are:

 
 
 
 

834. Sometimes the bacterial cell is enclosed in:

 
 
 
 

835. Why is Cycas called a living fossil?

 
 
 
 

836. Cryptogams include :

 
 
 
 

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

 
 
 
 

838. Cleavage polyembryony is found in :

 
 
 
 

839. 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:

 
 
 
 

840. The fern plant is:

 
 
 
 

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

 
 
 
 

842. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

844. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

846. An Hfr bacterium is one that contains:

 
 
 
 

847. Some biologists have used the term Mycetozoa for:

 
 
 
 

848. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

850. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Seeds are characteristically found in:

 
 
 
 

855. The order generally ends with:

 
 
 
 

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

 
 
 
 

857. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

859. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

861. Generic name of mango is:

 
 
 
 

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

 
 
 
 

863. The zoospores of Ulothrix are :

 
 
 
 

864. The phloem of vascular system of Cycas is :