Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Bacteriophage consists of:

 
 
 
 

5. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

10. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

19. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. The genetic material of poxvirus is:

 
 
 
 

31. Rhizoids of Riccia are :

 
 
 
 

32. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

35. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Protozoans are considered animals because these are:

 
 
 
 

39. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

40. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

46. Which statement is wrong in regard to bacteria?

 
 
 
 

47. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

48. What is streptomycin?

 
 
 
 

49. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

53. Which of the following have algal zone?

 
 
 
 

54. Transfusion tissue is present in the leaflet of:

 
 
 
 

55. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

57. Which of the following is a monocot?

 
 
 
 

58. Sporophyte of Funaria is :

 
 
 
 

59. Small epidermal swellings due to infection are called :

 
 
 
 

60. Pinus microsporophyll bears:

 
 
 
 

61. Vascular cryptogam is the term used for :

 
 
 
 

62. The first to isolate a plant virus was:

 
 
 
 

63. The disease apple scab is caused by:

 
 
 
 

64. Number of capsomeres forming capsid of TMV is:

 
 
 
 

65. Most primitive group of vascular plants are:

 
 
 
 

66. Which causes red tide?

 
 
 
 

67. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

69. The fungi are usually:

 
 
 
 

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

 
 
 
 

71. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. 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:

 
 
 
 

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

 
 
 
 

78. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

80. Chief constituents of bordeaux mixture are :

 
 
 
 

81. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

88. Tautonyms are illegitimate in:

 
 
 
 

89. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

91. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

93. 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:

 
 
 
 

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

 
 
 
 

95. Water-borne bacterial diseases are:

 
 
 
 

96. Which of the following is sago palm?

 
 
 
 

97. The stele of Dryopteris is a:

 
 
 
 

98. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

100. The archegonia in Selaginella develop on:

 
 
 
 

101. Viruses have:

 
 
 
 

102. Which is a fungicide?

 
 
 
 

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

 
 
 
 

104. The sexual reproductive organs in Rhizopus are:

 
 
 
 

105. Ulothrix produces :

 
 
 
 

106. The megaspore of Selaginella on germination produces:

 
 
 
 

107. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

110. 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:

 
 
 
 

111. Total parasites belong to:

 
 
 
 

112. Meristele of fern is:

 
 
 
 

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

 
 
 
 

114. Spirogyra differs from moss protonema in having :

 
 
 
 

115. An Hfr bacterium is one that contains:

 
 
 
 

116. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. Amoeba is a member of the phylum:

 
 
 
 

120. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

122. The order generally ends with:

 
 
 
 

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

 
 
 
 

124. Which bacteria convert nitrate into nitrogen?

 
 
 
 

125. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

130. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

132. Most of the algae are :

 
 
 
 

133. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

135. The antherozoids of Funaria are :

 
 
 
 

136. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

138. In moss, peristomial teeth are:

 
 
 
 

139. The role of meiosis is for:

 
 
 
 

140. Bryophyta have been placed in cryptogams because:

 
 
 
 

141. The fern plant is:

 
 
 
 

142. What is mycorrhiza?

 
 
 
 

143. Wine turns sour because of:

 
 
 
 

144. Streptomycin is obtained from:

 
 
 
 

145. In binomial system most of the words are:

 
 
 
 

146. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

148. Cycas is similar to a mustard plant :

 
 
 
 

149. Which of the following statement is correct?

 
 
 
 

150. Bacteria are found everywhere, except:

 
 
 
 

151. Chemosynthetic bacteria are:

 
 
 
 

152. Redness of red sea is due to :

 
 
 
 

153. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

155. Siphonogamy is found in:

 
 
 
 

156. 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?

 
 
 
 

157. Heterospory and ligulate leaves are a feature of:

 
 
 
 

158. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

160. Which among the following is a shrub?

 
 
 
 

161. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Synzoospore is produced in:

 
 
 
 

166. Each chloroplast in Spirogyra bears :

 
 
 
 

167. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

170. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

172. Photosynthetic bacteria have:

 
 
 
 

173. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

175. Which is a gametophytic tissue?

 
 
 
 

176. Mycoplasma are sensitive to:

 
 
 
 

177. Which is the correct statement about Selaginella?

 
 
 
 

178.

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

 
 
 
 

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

 
 
 
 

181. Which of the following lichens is harmful?

 
 
 
 

182. Pteridophytes are also known as :

 
 
 
 

183. Longest known virus is:

 
 
 
 

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

 
 
 
 

185. John Hutchinson divided dicots into two divisions:

 
 
 
 

186. The plants of Funaria grow :

 
 
 
 

187. Pseudomycelium is found in:

 
 
 
 

188. Downy mildew disease is caused by :

 
 
 
 

189. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

190. Quarantine regulations are concerned with:

 
 
 
 

191. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Which of the following is a parasitic algae?

 
 
 
 

195. Red rot of sugarcane is caused by :

 
 
 
 

196. Fruiting body of lichens is :

 
 
 
 

197. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

198. The tree fern is:

 
 
 
 

199. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

201. The similarity between cyanobacteria and bacteria:

 
 
 
 

202. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Lichens reproduce by :

 
 
 
 

206. Which part of Riccia bears nurse cells?

 
 
 
 

207. Maximum diversity of life forms occurs in :

 
 
 
 

208. Lichens form the first community in

 
 
 
 

209. Ergot is obtained from :

 
 
 
 

210. Banana bunchy top is caused by :

 
 
 
 

211. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. The sporangiophores in Rhizopus are:

 
 
 
 

216. Antibiotic has been extracted from :

 
 
 
 

217. The chloroplast of Chlamydomonas are:

 
 
 
 

218. Anoxygenic photosynthesis occurs in:

 
 
 
 

219. Diphtheria is caused by:

 
 
 
 

220. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

221. The chief characteristic of class Ascomycetes is:

 
 
 
 

222. Which have the largest antherozoid?

 
 
 
 

223. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. What are plasmids?

 
 
 
 

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

 
 
 
 

229. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

230. Interferon is a:

 
 
 
 

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

 
 
 
 

232. E coli is a:

 
 
 
 

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

 
 
 
 

234. How is moss different from fern?

 
 
 
 

235. Late blight of potato is caused by:

 
 
 
 

236. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

238. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

241. 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:

 
 
 
 

242. In Pteris, the archegonia are present:

 
 
 
 

243. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

247. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

249. Helotism word is used for the symbiosis between :

 
 
 
 

250. . Tapetum develops in:

 
 
 
 

251. To which country Antony van Leeuwenhoek belong?

 
 
 
 

252. In Cycas which structure is equivalent to stamen?

 
 
 
 

253. Germ theory of disease was proposed by:

 
 
 
 

254. Rhizopus belongs to:

 
 
 
 

255. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

256. Infective part of virus was discovered by:

 
 
 
 

257. Which group of algae have an incipient nucleus?

 
 
 
 

258. Most resistant spore in bacteria is:

 
 
 
 

259. Lichen show :

 
 
 
 

260. Streptomyces falls under:

 
 
 
 

261. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

263. Club moss and Peat moss belong to:

 
 
 
 

264. Which organisms are the oldest life forms?

 
 
 
 

265. Economic importance of bacteria lies in their being:

 
 
 
 

266. Facultative saprophyte is:

 
 
 
 

267. Rice, pea, potato are :

 
 
 
 

268. Gram stain is used to:

 
 
 
 

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

 
 
 
 

270. In moss, sporogenous tissue arises from:

 
 
 
 

271. Funaria is a Bryophyta because :

 
 
 
 

272. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

274. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

276. Winged pollen grains are found in :

 
 
 
 

277. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

280. Embryo formation is not known in :

 
 
 
 

281. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. In dinoflagellates, the two flagella are:

 
 
 
 

285. Centric discoid form of diatom is:

 
 
 
 

286. What is absent in Deuteromycetes?

 
 
 
 

287. Funaria is :

 
 
 
 

288. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Bacteria growing on synthetic medium are called:

 
 
 
 

292. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

296. The mode of nutrition of bacteria is usually:

 
 
 
 

297. Mixed cropping helps :

 
 
 
 

298. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

305. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

306. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

312. Pinus is:

 
 
 
 

313. The sporophyte of Riccia is represented by :

 
 
 
 

314. Liverworts are included in :

 
 
 
 

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

 
 
 
 

316. The chief characteristic of bryophyta is that :

 
 
 
 

317. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

319. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

321. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

323. Gymnosperms could also be called as:

 
 
 
 

324. The photosynthetic protists are:

 
 
 
 

325. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

327. Cycas is:

 
 
 
 

328. Bacteria were first discovered by:

 
 
 
 

329. Viroids have:

 
 
 
 

330. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

332. Fruits are not found in :

 
 
 
 

333. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

337. Discovery of penicillin was based on:

 
 
 
 

338. Majority of lichens are :

 
 
 
 

339. The fungi that grow on wood are called:

 
 
 
 

340. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

342. Spermatophyta are characterized by producing:

 
 
 
 

343. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

348. Most primitive embryophytes are placed in :

 
 
 
 

349. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

351. In Gymnocarpeae the fruiting body is :

 
 
 
 

352. Who among the following discovered virus?

 
 
 
 

353. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

355. Common phycobiont in a lichen is :

 
 
 
 

356. The spermatozoids of Cycas are :

 
 
 
 

357. Which is not true for Escherichia coli?

 
 
 
 

358. Mycoplasma contains:

 
 
 
 

359. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

360. Lichens reproduce by :

 
 
 
 

361. True sexuality is not found in:

 
 
 
 

362. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

363. Enteric bacteria are those bacteria that live:

 
 
 
 

364. Pneumonia is caused by:

 
 
 
 

365. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

367. Cryptogams include :

 
 
 
 

368. 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:

 
 
 
 

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

 
 
 
 

370. The lambda phase is a:

 
 
 
 

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

 
 
 
 

372. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Virion refers to:

 
 
 
 

376. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

378. Lichens show :

 
 
 
 

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

 
 
 
 

380. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. What is the role of nitrifying bacteria?

 
 
 
 

384. The spur of Pinus roxburghii has :

 
 
 
 

385. Which of the following applies to Selaginella?

 
 
 
 

386. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

391. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

393. 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:

 
 
 
 

394.

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

 
 
 
 

396. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

398. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

400. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

402. In Funaria :

 
 
 
 

403. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

404. Chemosynthetic bacteria are:

 
 
 
 

405. Water-net is the name of:

 
 
 
 

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

 
 
 
 

407. Which of the following are absent in Mycoplasma?

 
 
 
 

408. The gametophyte of moss has distinct phases :

 
 
 
 

409. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

415. Triple antigen injection or vaccine are for:

 
 
 
 

416.

 

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

 
 
 
 

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

 
 
 
 

419. Nannandria are:

 
 
 
 

420. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

422. Coenogamete is found in:

 
 
 
 

423. Indusium in Dryopteris is:

 
 
 
 

424. Asexual reproductive body of Volvox is called:

 
 
 
 

425. Halophiles are the bacteria that require for growth:

 
 
 
 

426. Selaginella differs from Moss in having:

 
 
 
 

427. Iodine is obtained from :

 
 
 
 

428. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

430. Plasmids are:

 
 
 
 

431. Lichens are ecologically important because :

 
 
 
 

432. Photosynthetic protists belong to:

 
 
 
 

433. Choose the correct statement about Spirogyra:

 
 
 
 

434. In Cycas:

 
 
 
 

435. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

437. Gametophyte is the main plant body in :

 
 
 
 

438. Cycas is :

 
 
 
 

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

 
 
 
 

440. 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:

 
 
 
 

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

 
 
 
 

442. Nitrifying bacteria play an important role by converting:

 
 
 
 

443. Fern prothallus produces:

 
 
 
 

444. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

446. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Which is an edible fungus?

 
 
 
 

453. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

459. Absorptive nutrition is:

 
 
 
 

460. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

472. In Herpes virus DNA is:

 
 
 
 

473. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

478. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

480. Ovary is absent in:

 
 
 
 

481.

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

 
 
 
 

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

 
 
 
 

484. Fern prothallus is:

 
 
 
 

485. Who discovered cyanophages?

 
 
 
 

486. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

488. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

491. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

495. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. Special feature of pollen grains of Pinus is :

 
 
 
 

499. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

502. Black rust of wheat is caused by:

 
 
 
 

503. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

505. Generic name of mango is:

 
 
 
 

506. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

508. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

510. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

512. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

514. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

516. Red rot of sugarcane is caused by:

 
 
 
 

517. Cleavage polyembryony is found in :

 
 
 
 

518. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

520. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

523. Mycoplasma are:

 
 
 
 

524. Which fixes atmospheric nitrogen?

 
 
 
 

525. The fungi are mostly:

 
 
 
 

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

 
 
 
 

527. The chromosomal number in:

 
 
 
 

528. The alga, Spirogyra are found in :

 
 
 
 

529. Cyathia is characterized by:

 
 
 
 

530. Mycoplasmas are not viruses in nature because:

 
 
 
 

531. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

533. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. The sporophyte of Riccia is :

 
 
 
 

537. In tracheophyta:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

541. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

543. Roots are absent in :

 
 
 
 

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

 
 
 
 

545. The disease symptom necrosis refers to :

 
 
 
 

546. Zoogametes are not found in:

 
 
 
 

547. Yeast grows more rapidly in:

 
 
 
 

548. Embryophyta includes :

 
 
 
 

549. Which one of the following is a monocot?

 
 
 
 

550. Cycas plant in appearance resembles :

 
 
 
 

551. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

554. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

558. The nucleus of bacteria is:

 
 
 
 

559. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

561. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

563. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. What is special feature of fern archegonia?

 
 
 
 

572. 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?

 
 
 
 

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

 
 
 
 

574. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

576. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

578. The source of litmus is :

 
 
 
 

579. The coralloid roots are :

 
 
 
 

580. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

582. Multicellular and jacketed sex organs are found in :

 
 
 
 

583. The prothallus of fern is:

 
 
 
 

584. Spirogyra represents the :

 
 
 
 

585. In Selaginella, the microsporangia are:

 
 
 
 

586. The archegonia of Selaginella are differentiated by:

 
 
 
 

587. Botulinum toxin effects:

 
 
 
 

588. Heterosporous pteridophytes always form:

 
 
 
 

589. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

591. The teeth of peristome of Funaria are :

 
 
 
 

592. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

595. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

600. Which lichen is called Reindeer moss?

 
 
 
 

601. Funaria are commonly found :

 
 
 
 

602. Bacteria differ from viruses in being sensitive to:

 
 
 
 

603. All algae have:

 
 
 
 

604. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

606. In a bacteriophage, DNA is present in:

 
 
 
 

607. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

613. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

615. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

619. Clostridium can:

 
 
 
 

620. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

622. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

624. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

626. The development of Selaginella embryo is:

 
 
 
 

627. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. Which is the nuclear material in bacteria?

 
 
 
 

632. Photoautotrophic bacteria have:

 
 
 
 

633. Ectocarpus produces:

 
 
 
 

634. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

636. Who named prion?

 
 
 
 

637. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

639. Fern phloem lacks:

 
 
 
 

640. Rhizopus and yeast are usually:

 
 
 
 

641. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

643. Bacteria are considered to be plants because they:

 
 
 
 

644. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Most of the lichens are composed of :

 
 
 
 

653. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

655. Heterocysts are found in :

 
 
 
 

656. 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?

 
 
 
 

657. The male gametes of Pinus are :

 
 
 
 

658. The smallest bacterium is:

 
 
 
 

659. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

662. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

665. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

667. In moss, conducting tissue is made up of

 
 
 
 

668. The root nodules of leguminous plants contain:

 
 
 
 

669. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

672. The gametophyte produced by apospory is :

 
 
 
 

673. The group algae possesses representatives belonging to kingdom:

 
 
 
 

674. Methanogens belong to:

 
 
 
 

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

 
 
 
 

676. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

681. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

683. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Smallpox is caused by:

 
 
 
 

687. Pythium debaryanum is the causative agent of:

 
 
 
 

688. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

689. Reproduction in Rhizopus is:

 
 
 
 

690. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. Who discovered heterothallism in fungi?

 
 
 
 

695. Cell walls of Gram-positive bacteria contain:

 
 
 
 

696. NBG of Lucknow is now named as:

 
 
 
 

697. The most primitive vascular plants is:

 
 
 
 

698. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

699. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

701. To which class Riccia belongs :

 
 
 
 

702. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

704. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. What are Cyanobacteria?

 
 
 
 

711. In Pteris, the roots are:

 
 
 
 

712. Pollination drop is:

 
 
 
 

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

 
 
 
 

714. Club moss is the common name of :

 
 
 
 

715. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

717. In a diplontic life cycle:

 
 
 
 

718. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

721. The ascus of yeast contains:

 
 
 
 

722. Simple polyembryony is found in :

 
 
 
 

723. Green plants are classified as:

 
 
 
 

724. Which is a redwood tree?

 
 
 
 

725. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

727. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. Oswald Tippo’s classification is:

 
 
 
 

731. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

733. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

736. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

737. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Lichens are the indicator of pollution :

 
 
 
 

741. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

743. Cycas revoluta is widely grown as :

 
 
 
 

744. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

746. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

747. How a fern differs from a moss?

 
 
 
 

748. Detailed study of bacteriophage was made by:

 
 
 
 

749. Leprosy is caused by:

 
 
 
 

750. Select the wrong statement:

 
 
 
 

751. The leafy fern plant represents the:

 
 
 
 

752. Fern plants are:

 
 
 
 

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

 
 
 
 

754. The prothallus of fern represents the plant:

 
 
 
 

755. Late blight of potato is caused by :

 
 
 
 

756. A gill of Agaricus:

 
 
 
 

757. Pollination in Pinus is :

 
 
 
 

758. Enzymes are absent in:

 
 
 
 

759. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. Embryophyta includes:

 
 
 
 

763. The roots of Cycas are :

 
 
 
 

764. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

767. Among the algae kelps are :

 
 
 
 

768. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

770. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. Ethylene oxide is widely used to:

 
 
 
 

775. Yeast is a source of:

 
 
 
 

776. The fungi used as food are:

 
 
 
 

777. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

779. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

781. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. The leaf of Cycas shows:

 
 
 
 

785. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. Vascular tissue is found in :

 
 
 
 

793. What is a vector?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. Reproduction in Cycas takes place by :

 
 
 
 

801. Fruits are not found in:

 
 
 
 

802. Ergot of rye is caused by:

 
 
 
 

803. Linnaeus is credited with introducing:

 
 
 
 

804. Pasteurization of milk involves heating for:

 
 
 
 

805. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

807. Spores of which plants have chloroplast:

 
 
 
 

808. Metulae are found in:

 
 
 
 

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

 
 
 
 

810. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

812. Proembryo in Pinus is :

 
 
 
 

813. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

814. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

816. The mycelium of Rhizopus is:

 
 
 
 

817. Reserve food in Euglena is:

 
 
 
 

818. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

820. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

823. The largest alga is:

 
 
 
 

824. In Cycas the fertilization is:

 
 
 
 

825. The young leaves of Cycas have :

 
 
 
 

826. Which of the following are included in Tracheophyta?

 
 
 
 

827. Most primitive kind of flower is represented by:

 
 
 
 

828. Water bloom is generally caused by :

 
 
 
 

829. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

835. TMV was isolated in crystalline form by:

 
 
 
 

836. Sexual reproduction of lichen is due to :

 
 
 
 

837. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

839. Bacteria are placed under:

 
 
 
 

840. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

843. Bacteriophages have been used as:

 
 
 
 

844. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

846. Vegetative reproduction in Cycas is by means of :

 
 
 
 

847. Pollination in Cycas takes place by :

 
 
 
 

848. Polystelic condition is found in:

 
 
 
 

849. Botulism is a:

 
 
 
 

850. Germination of the seed of Pinus is :

 
 
 
 

851. The ferns are usually found:

 
 
 
 

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

 
 
 
 

853. Facultative parasite is:

 
 
 
 

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

 
 
 
 

855. The Rhizopus is:

 
 
 
 

856. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

858. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

860. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

861. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. First animal pathogenic virus was discovered by: