Quiz_Random

1. Ovules are not found enclosed in ovary in :

 
 
 
 

2. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Roots are absent in :

 
 
 
 

9. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

11. Botulinum toxin effects:

 
 
 
 

12. Fern phloem lacks:

 
 
 
 

13. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

15. Pasteurization of milk involves heating for:

 
 
 
 

16. Pythium debaryanum is the causative agent of:

 
 
 
 

17. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

19. 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?

 
 
 
 

20. The ferns are usually found:

 
 
 
 

21. In dinoflagellates, the two flagella are:

 
 
 
 

22. Parmelia belongs to :

 
 
 
 

23. 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?

 
 
 
 

24. Pinus gerardiana is :

 
 
 
 

25. Some diseases caused by bacteria are:

 
 
 
 

26. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

28. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

30. Siphonogamy is found in:

 
 
 
 

31. Meristele of fern is:

 
 
 
 

32. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

34. The stele of Dryopteris is a:

 
 
 
 

35. The two conjugating gametangia of Rhizopus are:

 
 
 
 

36. Centric discoid form of diatom is:

 
 
 
 

37. The sporangium of fern contains nearly:

 
 
 
 

38. LSD is:

 
 
 
 

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

 
 
 
 

40. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

42. Pasteurized milk is:

 
 
 
 

43. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. Viruses have:

 
 
 
 

49. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54.

55. Which condition is found in Cycas?

 
 
 
 

56. The roots of Cycas are :

 
 
 
 

57. Smut of maize is caused by :

 
 
 
 

58. Funaria are commonly found :

 
 
 
 

59. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

61. Pneumonia is caused by:

 
 
 
 

62. 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:

 
 
 
 

63. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. All archaebacteria lack:

 
 
 
 

67. Select the wrong statement:

 
 
 
 

68. Late blight of potato is caused by:

 
 
 
 

69. The leafy fern plant represents the:

 
 
 
 

70. Pteridophyta are also called:

 
 
 
 

71. Water-borne bacterial diseases are:

 
 
 
 

72. The megasporangium of Selaginella is:

 
 
 
 

73. The photosynthetic protists are:

 
 
 
 

74. Botulism is a:

 
 
 
 

75. Fruiting body of lichens is :

 
 
 
 

76. Sometimes the bacterial cell is enclosed in:

 
 
 
 

77. Funaria is a Bryophyta because :

 
 
 
 

78. Spirogyra represents the :

 
 
 
 

79. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

80. Yeast is a source of:

 
 
 
 

81. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

91. What is streptomycin?

 
 
 
 

92. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Green plants are classified as :

 
 
 
 

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

 
 
 
 

97. Which of the following statements is not correct?

 
 
 
 

98. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

100. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

105. Fern prothallus produces:

 
 
 
 

106. Which statement is wrong in regard to bacteria?

 
 
 
 

107. The leaf of Cycas shows:

 
 
 
 

108. Chemosynthetic bacteria are:

 
 
 
 

109. The male gametes of Pinus are :

 
 
 
 

110. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

111. Rhizoids of Riccia are :

 
 
 
 

112. Rhizopus and yeast are usually:

 
 
 
 

113. Linnaeus is credited with introducing:

 
 
 
 

114. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

116. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

121. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

126. The tallest moss in the world is :

 
 
 
 

127. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

129. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

131. Which is a tautonym?

 
 
 
 

132. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

134. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

136. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

138. Which organisms are the oldest life forms?

 
 
 
 

139. Heterosporous pteridophytes always form:

 
 
 
 

140. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

142. Typhoid in man is caused by:

 
 
 
 

143. Who discovered heterothallism in fungi?

 
 
 
 

144. Bacteria differ from viruses in being sensitive to:

 
 
 
 

145. 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:

 
 
 
 

146. The gametophyte of fern is as:

 
 
 
 

147. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

150. Reproduction in Cycas takes place by :

 
 
 
 

151. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

153. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

161. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

166. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Ginkgo biloba is a:

 
 
 
 

172. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

174. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

179. Little leaf disease of Brinjal is caused by:

 
 
 
 

180. Bacteriophage consists of:

 
 
 
 

181. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

184. Where does meiosis occur in yeast?

 
 
 
 

185. Citrus canker is caused by :

 
 
 
 

186. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Downy mildew disease is caused by :

 
 
 
 

196. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

198. Zoogametes are not found in:

 
 
 
 

199. Funaria is :

 
 
 
 

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

 
 
 
 

201. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

203. Some biologists have used the term Mycetozoa for:

 
 
 
 

204. Vascular cryptogam is the term used for :

 
 
 
 

205. How is moss different from fern?

 
 
 
 

206. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

208. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

210. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

212. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

214. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

216. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

218. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Pinus microsporophyll bears:

 
 
 
 

224. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

226. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

228. Discovery of penicillin was based on:

 
 
 
 

229. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

231. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

233. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

238. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

240. Mycoplasma contains:

 
 
 
 

241. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

243. Which group of algae have an incipient nucleus?

 
 
 
 

244. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. Nannandria are:

 
 
 
 

248. Oswald Tippo’s classification is:

 
 
 
 

249. Most primitive kind of flower is represented by:

 
 
 
 

250. Bryophyta have a special character from other plants:

 
 
 
 

251. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

255. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

257. In a bacteriophage, DNA is present in:

 
 
 
 

258. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

262. Bacteriophages have been used as:

 
 
 
 

263. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

266. Interferon is a:

 
 
 
 

267. Which of the following are included in Tracheophyta?

 
 
 
 

268. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

272. Bentham and Hooker placed gymnosperms:

 
 
 
 

273. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

275. Fern prothallus is:

 
 
 
 

276. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. What are Cyanobacteria?

 
 
 
 

280. The archegonia of Selaginella are differentiated by:

 
 
 
 

281. In moss, stomata are found:

 
 
 
 

282. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

284. To which class Riccia belongs :

 
 
 
 

285. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

287. Coenogamete is found in:

 
 
 
 

288. Chemosynthetic bacteria are:

 
 
 
 

289. Most primitive embryophytes are placed in :

 
 
 
 

290. In moss, reduction division occurs in :

 
 
 
 

291. The spermatozoids of Cycas are :

 
 
 
 

292. Bacteria are considered to be plants because they:

 
 
 
 

293. Enzymes are absent in:

 
 
 
 

294. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

296. The fungi used as food are:

 
 
 
 

297. Facultative parasite is:

 
 
 
 

298. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

300. Lichens reproduce by :

 
 
 
 

301. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

303. Most primitive embryophytes are placed in:

 
 
 
 

304. Reproduction in Rhizopus is:

 
 
 
 

305. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

307. Ergot is obtained from :

 
 
 
 

308. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

310. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. 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:

 
 
 
 

314. Soil fertility is lost by the activities of:

 
 
 
 

315. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

317. The term stele was given by:

 
 
 
 

318. In moss, conducting tissue is made up of

 
 
 
 

319. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

322. Germ theory of disease was proposed by:

 
 
 
 

323. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

325. The chromosomal number in:

 
 
 
 

326. Viroids have:

 
 
 
 

327. Climbers are found in genus:

 
 
 
 

328. Leprosy is caused by:

 
 
 
 

329. The group algae possesses representatives belonging to kingdom:

 
 
 
 

330. Cryptogams include :

 
 
 
 

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

 
 
 
 

332. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

340. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

342. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

344. Water bloom is generally caused by :

 
 
 
 

345. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

347. In Cycas:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. The development of Selaginella embryo is:

 
 
 
 

352. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

353. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

355. Clostridium can:

 
 
 
 

356. Bivalved siliceous shell or frustule occur in:

 
 
 
 

357. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

360. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

362. The tree fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Fern plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

369. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

371. Which is not found in bacteria?

 
 
 
 

372. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

374. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

376. Proembryo in Pinus is :

 
 
 
 

377. Photoautotrophic bacteria have:

 
 
 
 

378. Mucilaginous canals in Cycas are found in :

 
 
 
 

379.

380. Which of the following are included in Tracheophyta?

 
 
 
 

381. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

384. Number of capsomeres forming capsid of TMV is:

 
 
 
 

385. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

387. Common phycobiont in a lichen is :

 
 
 
 

388. Which bacteria convert nitrate into nitrogen?

 
 
 
 

389. Yeast belongs to class:

 
 
 
 

390. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

391. Cocci types of bacteria are:

 
 
 
 

392. Which causes red tide?

 
 
 
 

393. Mixed cropping helps :

 
 
 
 

394. Ovules are not found enclosed in ovary of:

 
 
 
 

395. Streptomycin is obtained from:

 
 
 
 

396. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

398. The role of meiosis is for:

 
 
 
 

399. Bryophyta have been placed in cryptogams because:

 
 
 
 

400. Vegetative reproduction in Cycas is by means of :

 
 
 
 

401. Fruits are not found in :

 
 
 
 

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

 
 
 
 

403. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

407. Mycoplasma are:

 
 
 
 

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

 
 
 
 

409. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. Chief constituents of bordeaux mixture are :

 
 
 
 

413. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

415. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

418. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

420. Spermatophyta are characterized by producing:

 
 
 
 

421. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

423. Seeds are characteristically found in:

 
 
 
 

424. In a diplontic life cycle:

 
 
 
 

425. The upper region of moss capsule is :

 
 
 
 

426. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

428. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

430. Early blight of potato is caused by:

 
 
 
 

431. Lichens are indicators of :

 
 
 
 

432. Virus and bacteriophage are made-up of:

 
 
 
 

433. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

439. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443. In Funaria :

 
 
 
 

444. Enteric bacteria are those bacteria that live:

 
 
 
 

445. Lichens are ecologically important because :

 
 
 
 

446. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

448. The gametophyte of fern bears:

 
 
 
 

449. Tautonyms are illegitimate in:

 
 
 
 

450. Green plants are classified as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Heterospory and ligulate leaves are a feature of:

 
 
 
 

455. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

457. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

459. TMV was isolated in crystalline form by:

 
 
 
 

460. The chloroplast of Chlamydomonas are:

 
 
 
 

461. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

465. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

467. Club moss and Peat moss belong to:

 
 
 
 

468. Protists which are diploid reproduce sexually by:

 
 
 
 

469. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. E coli is a:

 
 
 
 

473. 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:

 
 
 
 

474. Which of the following is a parasitic algae?

 
 
 
 

475. The development of sporangium in Selaginella is:

 
 
 
 

476. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

479. Fertility of the soil is increased by:

 
 
 
 

480. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

482. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. The fern plant is:

 
 
 
 

486. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

488. The leaves of Funaria are :

 
 
 
 

489. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

491. The sori in Dryopteris are found on:

 
 
 
 

492. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

496. Ovary is absent in:

 
 
 
 

497. Mycoplasma was discovered by:

 
 
 
 

498. The central part of Funaria axis is :

 
 
 
 

499. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

505. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

507. Most of the algae are :

 
 
 
 

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

 
 
 
 

509. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

511. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Black rust of wheat is caused by:

 
 
 
 

515. Male gametes in Dryopteris are:

 
 
 
 

516. Genetic material of TMV is:

 
 
 
 

517. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

519. Ergot of rye is caused by:

 
 
 
 

520. Lichens are the indicator of pollution :

 
 
 
 

521. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

523. Which lichen is called Reindeer moss?

 
 
 
 

524. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

526. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

527. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

533. Isomorphic type alternation of generation is found in:

 
 
 
 

534. Maximum diversity of life forms occurs in :

 
 
 
 

535. The most primitive vascular plants is:

 
 
 
 

536. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

541. Which is the nuclear material in bacteria?

 
 
 
 

542. The zygospore in Rhizopus on germination forms:

 
 
 
 

543. Pinus is:

 
 
 
 

544. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

547. The fungi are mostly:

 
 
 
 

548. The order generally ends with:

 
 
 
 

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

 
 
 
 

550. The fungi are usually:

 
 
 
 

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

 
 
 
 

552. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

554. Pollination in Cycas takes place by :

 
 
 
 

555. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

557. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

560. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Which among the following is a shrub?

 
 
 
 

564. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. Bacteria are placed under:

 
 
 
 

572. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

573. Funaria is :

 
 
 
 

574. Black rust of wheat is caused by:

 
 
 
 

575. Which one of the following statement is wrong?

 
 
 
 

576. Pythium debaryanum is the causative agent of:

 
 
 
 

577. Which fixes atmospheric nitrogen?

 
 
 
 

578. The middle sterile part of capsule is called:

 
 
 
 

579. Some bacteria cannot be killed easily because of:

 
 
 
 

580. Broad spectrum antibiotic is, which:

 
 
 
 

581.

 

582. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

584. Plasmids are:

 
 
 
 

585. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

587. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

589. Cap cells are found in the filament of:

 
 
 
 

590. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. The genetic material of poxvirus is:

 
 
 
 

596. Water-net is the name of:

 
 
 
 

597. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

599. Red rot of sugarcane is caused by :

 
 
 
 

600. Lichens form the first community in

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. The lambda phase is a:

 
 
 
 

610. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

612. A gill of Agaricus:

 
 
 
 

613. The lichens growing on rocks are called :

 
 
 
 

614. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

623. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

628. Select the wrong statement:

 
 
 
 

629. The flagella of Chlamydomonas are:

 
 
 
 

630. Diploxylic vascular bundles are found in:

 
 
 
 

631. Cell walls of Gram-positive bacteria contain:

 
 
 
 

632. Infective part of virus was discovered by:

 
 
 
 

633. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

635. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

637. . Tapetum develops in:

 
 
 
 

638. The seedless plants which possess vascular tissues are:

 
 
 
 

639. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

641. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

643. Majority of lichens are :

 
 
 
 

644. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

646. What are plasmids?

 
 
 
 

647. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

649. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

650. In moss, sporogenous tissue arises from:

 
 
 
 

651. Pteridophytes are also known as :

 
 
 
 

652. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

655. Which of the following have algal zone?

 
 
 
 

656. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Gram stain is used to:

 
 
 
 

665. In moss, peristomial teeth are:

 
 
 
 

666. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

670. Generic name of mango is:

 
 
 
 

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

 
 
 
 

672. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

674. Psilotum is:

 
 
 
 

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

 
 
 
 

676. Who discovered cyanophages?

 
 
 
 

677. Cellular slime mold is:

 
 
 
 

678. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

680. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

683. Cycas is:

 
 
 
 

684. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

686. 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:

 
 
 
 

687. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

691. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

692. Pasteur is famous for his:

 
 
 
 

693. Most common type of conjugation in Spirogyra is :

 
 
 
 

694. Longest known virus is:

 
 
 
 

695. In tracheophyta:

 
 
 
 

696. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

698. Cycas is different from mango in :

 
 
 
 

699. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

701. Winged pollen grains are found in :

 
 
 
 

702. Who named prion?

 
 
 
 

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

 
 
 
 

704. The archegonia in Selaginella develop on:

 
 
 
 

705. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

707. Banana bunchy top is caused by :

 
 
 
 

708. Amoeba is a member of the phylum:

 
 
 
 

709. Who discovered streptomycin?

 
 
 
 

710. Choose the correct statement about Spirogyra:

 
 
 
 

711. The sporophyte of Riccia is :

 
 
 
 

712. The zoospores of Ulothrix are :

 
 
 
 

713. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

715. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

717. Embryophyta includes :

 
 
 
 

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

 
 
 
 

719. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Simple polyembryony is found in :

 
 
 
 

723. The ascus of yeast contains:

 
 
 
 

724. First animal pathogenic virus was discovered by:

 
 
 
 

725. Placenta in fern is:

 
 
 
 

726. Viruses are commonly transmitted in plants through:

 
 
 
 

727. What is absent in Deuteromycetes?

 
 
 
 

728. Acellular slime mold is/are:

 
 
 
 

729. Which is absent from the xylem of Cycas?

 
 
 
 

730. Which of the following statement is correct?

 
 
 
 

731. Which is an exception to cell theory?

 
 
 
 

732. Pollination drop is:

 
 
 
 

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

 
 
 
 

734. Cycas revoluta is widely grown as :

 
 
 
 

735. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

737. John Hutchinson divided dicots into two divisions:

 
 
 
 

738. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

740. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

742. Transfusion tissue is present in the leaflet of:

 
 
 
 

743. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

745. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

747. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

749. Acetobacter is useful in:

 
 
 
 

750. Among the algae kelps are :

 
 
 
 

751. The disease symptom necrosis refers to :

 
 
 
 

752. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. Spores of which plants have chloroplast:

 
 
 
 

756. Oswald Tippo’s classification was based on :

 
 
 
 

757. Virion refers to:

 
 
 
 

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

 
 
 
 

759. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

761. 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:

 
 
 
 

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

 
 
 
 

763. 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?

 
 
 
 

764. Viruses are considered to be:

 
 
 
 

765. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

767. The Rhizopus is:

 
 
 
 

768. Ethylene oxide is widely used to:

 
 
 
 

769. Most primitive group of vascular plants are:

 
 
 
 

770. Selaginella differs from Moss in having:

 
 
 
 

771. Which is not true for Escherichia coli?

 
 
 
 

772. Which of the following is a heterosporous pteridophyte?

 
 
 
 

773. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

774. Which of the following is true for viruses?

 
 
 
 

775. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

777. Male gametophyte of Selaginella is found:

 
 
 
 

778. Which is a fungicide?

 
 
 
 

779. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

781. Kuru, a human disease is caused by:

 
 
 
 

782. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

784. Economic importance of bacteria lies in their being:

 
 
 
 

785. Lichens reproduce by :

 
 
 
 

786. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

788. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

793. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. Woody climbers are known as :

 
 
 
 

799. Protistan algae obtain their food as:

 
 
 
 

800. Methanogens belong to:

 
 
 
 

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

 
 
 
 

802. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

804. In angiosperms double fertilization represents:

 
 
 
 

805. Standard size of a herbarium sheet is:

 
 
 
 

806. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

808. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

810. Winged seeds are found in :

 
 
 
 

811. The source of litmus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

814. Select the correct statement: (NEET 2016)

 
 
 
 

815. In Cycas microsporangia are borne on:

 
 
 
 

816. Which of the following have a prokaryotic cell?

 
 
 
 

817. The young leaves of Cycas have :

 
 
 
 

818. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

823. Red rot of sugarcane is caused by:

 
 
 
 

824. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

826. The DNA of E coli is:

 
 
 
 

827. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

829. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

831. The rhizoids of Funaria are :

 
 
 
 

832. Agar-agar is obtained from:

 
 
 
 

833. Ulothrix produces :

 
 
 
 

834. All protozoans possess:

 
 
 
 

835. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

838. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

840.

841. Which of the following are absent in Mycoplasma?

 
 
 
 

842. Photosynthetic bacteria have:

 
 
 
 

843. The plants of Funaria grow :

 
 
 
 

844. 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:

 
 
 
 

845. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

847. In Pteris, the roots are:

 
 
 
 

848. Which is the correct statement about Selaginella?

 
 
 
 

849. Azolla and Salvinia both are:

 
 
 
 

850. All algae have:

 
 
 
 

851. The leaves of Funaria are :

 
 
 
 

852. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

858. Mycoplasma are sensitive to:

 
 
 
 

859. Gymnosperms could also be called as:

 
 
 
 

860. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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