Quiz_Random

1. The most primitive vascular plants is:

 
 
 
 

2. The source of litmus is :

 
 
 
 

3. Viruses are considered to be:

 
 
 
 

4. Facultative parasite is:

 
 
 
 

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

 
 
 
 

6. What are plasmids?

 
 
 
 

7. What is the role of nitrifying bacteria?

 
 
 
 

8. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

10. Saccharomyces is used in:

 
 
 
 

11. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. What is a vector?

 
 
 
 

15. Bentham and Hooker placed gymnosperms:

 
 
 
 

16. The young leaves of Cycas have :

 
 
 
 

17. All protozoans possess:

 
 
 
 

18. The Rhizopus is:

 
 
 
 

19. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. What is streptomycin?

 
 
 
 

23. Lichens are ecologically important because :

 
 
 
 

24. Streptomyces falls under:

 
 
 
 

25. NBG of Lucknow is now named as:

 
 
 
 

26. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

27. The fungi are mostly:

 
 
 
 

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

 
 
 
 

29. Funaria are commonly found :

 
 
 
 

30. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

32. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

34. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

36. Azolla and Salvinia both are:

 
 
 
 

37. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

42. Which of the following have a prokaryotic cell?

 
 
 
 

43. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

45. Cycas is different from mango in :

 
 
 
 

46. Which is not found in bacteria?

 
 
 
 

47. Ulothrix produces :

 
 
 
 

48. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

50. Which is not true for Escherichia coli?

 
 
 
 

51. Vascular cryptogams is the term used for:

 
 
 
 

52. Water-borne bacterial diseases are:

 
 
 
 

53. Club moss is the common name of :

 
 
 
 

54. In tracheophyta:

 
 
 
 

55. Lichen show :

 
 
 
 

56. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Quarantine regulations are concerned with:

 
 
 
 

61. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Saccharomyces ludwigii ascus produces:

 
 
 
 

70. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

72. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Funaria is a Bryophyta because :

 
 
 
 

76. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

78. Embryo formation is not known in :

 
 
 
 

79. Oswald Tippo’s classification was based on :

 
 
 
 

80. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

82. Fruits are not found in:

 
 
 
 

83. The archegonia in Selaginella develop on:

 
 
 
 

84. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

85. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

87. Anoxygenic photosynthesis occurs in:

 
 
 
 

88. Lichens are indicators of :

 
 
 
 

89. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. The fern plant is:

 
 
 
 

96. Mixed cropping helps :

 
 
 
 

97. Transfusion tissue is present in the leaflet of:

 
 
 
 

98. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. Penicillin is obtained from:

 
 
 
 

106. Streptomycin is obtained from:

 
 
 
 

107. The similarity between cyanobacteria and bacteria:

 
 
 
 

108. The gametophyte of moss has distinct phases :

 
 
 
 

109. The phloem of vascular system of Cycas is :

 
 
 
 

110. Cleavage polyembryony is found in :

 
 
 
 

111. Who discovered cyanophages?

 
 
 
 

112. Which is a redwood tree?

 
 
 
 

113. Ovules are not found enclosed in ovary in :

 
 
 
 

114. Psilotum is:

 
 
 
 

115. Generic name of mango is:

 
 
 
 

116. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

118. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

123. Disease resistant plant varieties can be produced by :

 
 
 
 

124. Embryophyta includes:

 
 
 
 

125. Botulinum toxin effects:

 
 
 
 

126. The chromosomal number in:

 
 
 
 

127. Ginkgo biloba is a:

 
 
 
 

128. Maximum diversity of life forms occurs in :

 
 
 
 

129. Majority of lichens are :

 
 
 
 

130. Enzymes are absent in:

 
 
 
 

131. Pneumonia is caused by:

 
 
 
 

132. Synzoospore is produced in:

 
 
 
 

133. 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?

 
 
 
 

134. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

136. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

138. Which of the following is a parasitic algae?

 
 
 
 

139. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

141. The vascular bundles of Cycas stem are :

 
 
 
 

142. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

145. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. Citrus canker is caused by:

 
 
 
 

149. Each chloroplast in Spirogyra bears :

 
 
 
 

150. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

152. Clostridium can:

 
 
 
 

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

 
 
 
 

154.

 

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

 
 
 
 

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

 
 
 
 

157. E coli is a:

 
 
 
 

158. Yeast is a source of:

 
 
 
 

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

 
 
 
 

160.

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

 
 
 
 

162. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

166. Mucilaginous canals in Cycas are found in :

 
 
 
 

167. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

169. The fungi that grow on wood are called:

 
 
 
 

170. The spermatozoids of Cycas are :

 
 
 
 

171. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

173. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

175. Tautonyms are illegitimate in:

 
 
 
 

176. Cocci types of bacteria are:

 
 
 
 

177. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

179. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

181. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

183. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

192. Leprosy is caused by:

 
 
 
 

193. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

195. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

198. Special feature of pollen grains of Pinus is :

 
 
 
 

199. Which have the largest antherozoid?

 
 
 
 

200. Broad spectrum antibiotic is, which:

 
 
 
 

201. Fern plants are:

 
 
 
 

202. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

208. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

210. Fruits are not found in :

 
 
 
 

211. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

213. Gram stain is used to:

 
 
 
 

214. Spirogyra differs from moss protonema in having :

 
 
 
 

215. Roots are absent in :

 
 
 
 

216. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

218. Which condition is found in Cycas?

 
 
 
 

219. Green plants are classified as:

 
 
 
 

220. Funaria is :

 
 
 
 

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

 
 
 
 

222. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

224. Which is an edible fungus?

 
 
 
 

225. Sexual reproduction of lichen is due to :

 
 
 
 

226. Bivalved siliceous shell or frustule occur in:

 
 
 
 

227. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

229. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

230. Bacteriophages have been used as:

 
 
 
 

231. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

233. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

235. 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?

 
 
 
 

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

 
 
 
 

237. Plasmids are:

 
 
 
 

238. In moss, calyptra is formed from:

 
 
 
 

239. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

241. The two conjugating gametangia of Rhizopus are:

 
 
 
 

242. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

245. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

247. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. Sexual reproduction in Rhizopus is by:

 
 
 
 

253. Enteric bacteria are those bacteria that live:

 
 
 
 

254. Which is a tautonym?

 
 
 
 

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

 
 
 
 

256. Fertility of the soil is increased by:

 
 
 
 

257. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

260. Which is the correct statement about Selaginella?

 
 
 
 

261. Redness of red sea is due to :

 
 
 
 

262. Siphonogamy is found in:

 
 
 
 

263. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

264. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

265. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

273. Ergot of rye is caused by:

 
 
 
 

274. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

276. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

278. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

279. Liverworts are included in :

 
 
 
 

280. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

282. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

284. Desired type of Cycas can be grown by:

 
 
 
 

285. Helotism word is used for the symbiosis between :

 
 
 
 

286. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

288. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. The tree fern is:

 
 
 
 

295. Agar-agar is obtained from:

 
 
 
 

296. The roots of Cycas are :

 
 
 
 

297. The megasporangium of Selaginella is:

 
 
 
 

298.

299. Viroids have:

 
 
 
 

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

 
 
 
 

301. In Funaria :

 
 
 
 

302. Fern prothallus is:

 
 
 
 

303. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

306. The truncated cone of HIV consists of:

 
 
 
 

307. Typhoid in man is caused by:

 
 
 
 

308. Mycoplasma contains:

 
 
 
 

309. The root nodules of leguminous plants contain:

 
 
 
 

310. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

315. Viruses have:

 
 
 
 

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

 
 
 
 

317. In Cycas the fertilization is:

 
 
 
 

318. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

320. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

322. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

324. Coenogamete is found in:

 
 
 
 

325. Botulism is a:

 
 
 
 

326. Linnaeus is credited with introducing:

 
 
 
 

327. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

330. Select the wrong statement:

 
 
 
 

331. Which statement is wrong in regard to bacteria?

 
 
 
 

332. The archegonia of Selaginella are differentiated by:

 
 
 
 

333. The zygospore in Rhizopus on germination forms:

 
 
 
 

334. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Mycoplasmas are not viruses in nature because:

 
 
 
 

339. Male gametes in Dryopteris are:

 
 
 
 

340. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

342. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

344. The sporophyte of Riccia is :

 
 
 
 

345. Cap cells are found in the filament of:

 
 
 
 

346. To which class Riccia belongs :

 
 
 
 

347. Which is a gametophytic tissue?

 
 
 
 

348. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

349. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. The flagella of Chlamydomonas are:

 
 
 
 

354. 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:

 
 
 
 

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

 
 
 
 

356. Mycoplasma are sensitive to:

 
 
 
 

357. In Herpes virus DNA is:

 
 
 
 

358. The first to isolate a plant virus was:

 
 
 
 

359. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

363. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

366. Discovery of penicillin was based on:

 
 
 
 

367. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Funaria is :

 
 
 
 

371. In binomial system most of the words are:

 
 
 
 

372. Which bacteria convert nitrate into nitrogen?

 
 
 
 

373. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

376. Which is a fungicide?

 
 
 
 

377. Fairy ring is the name given to:

 
 
 
 

378. Who among the following discovered virus?

 
 
 
 

379. The sporophyte of Riccia is represented by :

 
 
 
 

380. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. Which is an exception to cell theory?

 
 
 
 

384. Vascular cryptogam is the term used for :

 
 
 
 

385. In Selaginella, the microsporangia are:

 
 
 
 

386. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

388. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

393. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

394. Which is absent from the xylem of Cycas?

 
 
 
 

395. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. Which of the following shows heterotrichous habit?

 
 
 
 

399. Infective part of virus was discovered by:

 
 
 
 

400. In Funaria, calyptra is derived from :

 
 
 
 

401. Cell walls of Gram-positive bacteria contain:

 
 
 
 

402. Triple antigen injection or vaccine are for:

 
 
 
 

403. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

405. Nitrogen-fixing bacteria may be located:

 
 
 
 

406. Etiology includes the study of :

 
 
 
 

407. The sporangiophores in Rhizopus are:

 
 
 
 

408. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

412. Most common type of conjugation in Spirogyra is :

 
 
 
 

413. Pasteurized milk is:

 
 
 
 

414. Green plants are classified as :

 
 
 
 

415. Vascular tissue is found in :

 
 
 
 

416. What is mycorrhiza?

 
 
 
 

417. The plants of Funaria grow :

 
 
 
 

418. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

420. The gametophyte of fern bears:

 
 
 
 

421. In Cycas which structure is equivalent to stamen?

 
 
 
 

422. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

431. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. Black rust of wheat is caused by:

 
 
 
 

437. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

440. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

442. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

444. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

452. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

454. Rhizopus and yeast are usually:

 
 
 
 

455. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

457. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

459. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

462. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Winged seeds are found in :

 
 
 
 

467. Sporophyte of Funaria is :

 
 
 
 

468. Mycoplasma was discovered by:

 
 
 
 

469. Choose the correct statement about Spirogyra:

 
 
 
 

470. Where does meiosis occur in yeast?

 
 
 
 

471. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Methanogens belong to:

 
 
 
 

475. Placenta in fern is:

 
 
 
 

476. The prothallus of fern is:

 
 
 
 

477. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

481. Photosynthetic protists belong to:

 
 
 
 

482. First animal pathogenic virus was discovered by:

 
 
 
 

483. Who named prion?

 
 
 
 

484. Black rust of wheat is caused by:

 
 
 
 

485. Endemic plants are characterised by their:

 
 
 
 

486. The fungi used as food are:

 
 
 
 

487. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

491. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

494. The alga, Spirogyra are found in :

 
 
 
 

495. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Seeds are characteristically found in :

 
 
 
 

499. Pteridophytes are also known as :

 
 
 
 

500. 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:

 
 
 
 

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

 
 
 
 

502. The most important property of yeast is:

 
 
 
 

503. The leafy fern plant represents the:

 
 
 
 

504. Nannandria are:

 
 
 
 

505. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

508. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

510. Bacteria are placed under:

 
 
 
 

511. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

512. Protozoans are considered animals because these are:

 
 
 
 

513. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

521. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

523. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

525. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

527. Metulae are found in:

 
 
 
 

528. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

536. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

538. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. The fungi are usually:

 
 
 
 

544. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

553. Ovary is absent in:

 
 
 
 

554. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

559. Mycoplasma are:

 
 
 
 

560. Some bacteria cannot be killed easily because of:

 
 
 
 

561. Which of the following statements is not correct?

 
 
 
 

562. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

564. Bacteria which are spherical are called:

 
 
 
 

565. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

567. TMV was isolated in crystalline form by:

 
 
 
 

568. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

570. Ectocarpus produces:

 
 
 
 

571. What is special feature of fern archegonia?

 
 
 
 

572. 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:

 
 
 
 

573. The gametophyte of fern is as:

 
 
 
 

574. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

576. Lichens form the first community in

 
 
 
 

577. Bacteria growing on synthetic medium are called:

 
 
 
 

578. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

580. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

582. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

584. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

587. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

589. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

591. Which of the following does not contain chlorophyll?

 
 
 
 

592. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

599. The central part of Funaria axis is :

 
 
 
 

600. Banana bunchy top is caused by :

 
 
 
 

601. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

603. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

608. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

610. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

612. Which of the following applies to Selaginella?

 
 
 
 

613. Ovary is absent in :

 
 
 
 

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

 
 
 
 

615. Cryptogams include :

 
 
 
 

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

 
 
 
 

617. Late blight of potato is caused by:

 
 
 
 

618. The upper region of moss capsule is :

 
 
 
 

619. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

621. John Hutchinson divided dicots into two divisions:

 
 
 
 

622. Red rot of sugarcane is caused by :

 
 
 
 

623. The sporangium of fern contains nearly:

 
 
 
 

624. Soil fertility is lost by the activities of:

 
 
 
 

625. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

627. Pteridophyta are also called:

 
 
 
 

628. Sporophyte of fern is:

 
 
 
 

629. Most appropriate word for protozoans is:

 
 
 
 

630. Which group of algae have an incipient nucleus?

 
 
 
 

631. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

640. Fern prothallus produces:

 
 
 
 

641. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

643. Iodine is obtained from:

 
 
 
 

644. . Tapetum develops in:

 
 
 
 

645. Bacteria were first discovered by:

 
 
 
 

646. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

650. Total parasites belong to:

 
 
 
 

651. Most of the algae are :

 
 
 
 

652. The chloroplast of Chlamydomonas are:

 
 
 
 

653. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

655. Which one of the following statement is wrong?

 
 
 
 

656. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

658. The group algae possesses representatives belonging to kingdom:

 
 
 
 

659. Diphtheria is caused by:

 
 
 
 

660. Indusium in Dryopteris is:

 
 
 
 

661. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

664. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

669. Which of the following is true for viruses?

 
 
 
 

670. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

678. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

680. Most primitive kind of flower is represented by:

 
 
 
 

681. Pinus is:

 
 
 
 

682. What are Cyanobacteria?

 
 
 
 

683. Chemosynthetic bacteria are:

 
 
 
 

684. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

686. LSD is:

 
 
 
 

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

 
 
 
 

688. In Pteris, the archegonia are present:

 
 
 
 

689. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

691. Mostly type of zygospore in Ulothrix is:

 
 
 
 

692. Bacteriophage consists of:

 
 
 
 

693. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

694. Saccharomyces is well known for:

 
 
 
 

695. Germination of the seed of Pinus is :

 
 
 
 

696. Water-net is the name of:

 
 
 
 

697. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

699. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

701. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

704. The DNA of E coli is:

 
 
 
 

705. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

708. Diploxylic vascular bundles are found in:

 
 
 
 

709. Most primitive embryophytes are placed in:

 
 
 
 

710. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

711. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

713. Aflatoxin is produced as a product in :

 
 
 
 

714. The ferns are usually found:

 
 
 
 

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

 
 
 
 

716. 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?

 
 
 
 

717. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

722. The Rhizopus gametes are formed in:

 
 
 
 

723. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

725. Sometimes the bacterial cell is enclosed in:

 
 
 
 

726. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

728. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

729. In angiosperms double fertilization represents:

 
 
 
 

730. The order generally ends with:

 
 
 
 

731. Lichens reproduce by :

 
 
 
 

732. All algae have:

 
 
 
 

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

 
 
 
 

734. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

736. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. The development of sporangium in Selaginella is:

 
 
 
 

741. A gill of Agaricus:

 
 
 
 

742. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

744. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

746.

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

 
 
 
 

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

 
 
 
 

749. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

751. Common phycobiont in a lichen is :

 
 
 
 

752. 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?

 
 
 
 

753. Most resistant spore in bacteria is:

 
 
 
 

754. In a bacteriophage, DNA is present in:

 
 
 
 

755. The lambda phase is a:

 
 
 
 

756. The gametophyte produced by apospory is :

 
 
 
 

757. Meristele of fern is:

 
 
 
 

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

 
 
 
 

759. Acetobacter is useful in:

 
 
 
 

760. In Cycas:

 
 
 
 

761. Halophiles are the bacteria that require for growth:

 
 
 
 

762. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

764. Amoeba is a member of the phylum:

 
 
 
 

765. Black rust of wheat is caused by:

 
 
 
 

766. Most primitive embryophytes are placed in :

 
 
 
 

767. Among the algae kelps are :

 
 
 
 

768. Genetic material of TMV is:

 
 
 
 

769. Interferon is a:

 
 
 
 

770. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

772. Kuru, a human disease is caused by:

 
 
 
 

773. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. Late blight of potato is caused by :

 
 
 
 

780. Pollination drop is:

 
 
 
 

781. Which of the following have algal zone?

 
 
 
 

782. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

784. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Lichens show :

 
 
 
 

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

 
 
 
 

791. Select the correct statement: (NEET 2016)

 
 
 
 

792. Rice, pea, potato are :

 
 
 
 

793. Cycas is:

 
 
 
 

794. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

796. The middle sterile part of capsule is called:

 
 
 
 

797. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

802. Pollination in Pinus is :

 
 
 
 

803. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

805. In Cycas microsporangia are borne on:

 
 
 
 

806. Wine turns sour because of:

 
 
 
 

807. Climbers are found in genus:

 
 
 
 

808. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

810. Which of the following lichens is harmful?

 
 
 
 

811. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

813. Which lichen is called Reindeer moss?

 
 
 
 

814. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

816. The chloroplast in Ulothrix is :

 
 
 
 

817. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

822. Heterospory and ligulate leaves are a feature of:

 
 
 
 

823. Why is Cycas called a living fossil?

 
 
 
 

824. Bacteria are considered to be plants because they:

 
 
 
 

825. Ergot is obtained from :

 
 
 
 

826. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

828. Cellular slime mold is:

 
 
 
 

829. Penicillin was discovered by:

 
 
 
 

830. Cycas revoluta is widely grown as :

 
 
 
 

831. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

834. Centric discoid form of diatom is:

 
 
 
 

835. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

837. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. The coralloid roots are :

 
 
 
 

841. The genetic material of poxvirus is:

 
 
 
 

842. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

844. Cycas is :

 
 
 
 

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

 
 
 
 

846. The largest known bacterium is:

 
 
 
 

847. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

849. Small epidermal swellings due to infection are called :

 
 
 
 

850. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

853. Which causes red tide?

 
 
 
 

854. In a diplontic life cycle:

 
 
 
 

855. Antibiotic has been extracted from :

 
 
 
 

856. The largest alga is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

860. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

862. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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