Quiz_Random

1. In moss, reduction division occurs in :

 
 
 
 

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

 
 
 
 

3. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

5. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

6. The alga, Spirogyra are found in :

 
 
 
 

7. Which statement is wrong in regard to bacteria?

 
 
 
 

8. Heterotrichous habit means :

 
 
 
 

9. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

11. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. The young leaves of Cycas have :

 
 
 
 

15. The plants of Funaria grow :

 
 
 
 

16. The microsporophylls on the cone of Cycas are :

 
 
 
 

17. Acellular slime mold is/are:

 
 
 
 

18. Black rust of wheat is caused by:

 
 
 
 

19. Which is not true for Escherichia coli?

 
 
 
 

20. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

30. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

32. The sporangia of Selaginella are attached:

 
 
 
 

33. Ovary is absent in:

 
 
 
 

34. The antherozoids of Funaria are :

 
 
 
 

35. Who discovered cyanophages?

 
 
 
 

36. Smallpox is caused by:

 
 
 
 

37. The sporangiophores in Rhizopus are:

 
 
 
 

38. The Rhizopus gametes are formed in:

 
 
 
 

39. The vascular bundles of Cycas stem are :

 
 
 
 

40. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

42. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

44. Choose the correct statement about Spirogyra:

 
 
 
 

45. Agar-agar is obtained from:

 
 
 
 

46. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

48. The megaspore of Selaginella on germination produces:

 
 
 
 

49. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

51. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Fruits are not found in Cycas because:

 
 
 
 

56. Pseudomycelium is found in:

 
 
 
 

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

 
 
 
 

58. Lichens show :

 
 
 
 

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

 
 
 
 

60. Downy mildew disease is caused by :

 
 
 
 

61. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

68. Ovules are not found enclosed in ovary in :

 
 
 
 

69. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

70. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

75. Green plants are classified as:

 
 
 
 

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

 
 
 
 

77. In moss, stomata are found:

 
 
 
 

78. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. Which is not found in bacteria?

 
 
 
 

84. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Some diseases caused by bacteria are:

 
 
 
 

88. Water-net is the name of:

 
 
 
 

89. Streptomycin is obtained from:

 
 
 
 

90. Sexual reproduction of lichen is due to :

 
 
 
 

91. Linnaeus is credited with introducing:

 
 
 
 

92. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

94. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

96. Bacteria differ from viruses in being sensitive to:

 
 
 
 

97.

98. What is mycorrhiza?

 
 
 
 

99. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

101. Fruits are not found in:

 
 
 
 

102. Helotism word is used for the symbiosis between :

 
 
 
 

103. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

108. Bivalved siliceous shell or frustule occur in:

 
 
 
 

109. The two conjugating gametangia of Rhizopus are:

 
 
 
 

110. 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:

 
 
 
 

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

 
 
 
 

112. Cycas revoluta is widely grown as :

 
 
 
 

113. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

115. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

120. Funaria is a Bryophyta because :

 
 
 
 

121. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. The chief characteristic of bryophyta is that :

 
 
 
 

126. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

128. Triple antigen injection or vaccine are for:

 
 
 
 

129. Facultative saprophyte is:

 
 
 
 

130. Spores of which plants have chloroplast:

 
 
 
 

131. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

133. Embryophyta includes :

 
 
 
 

134. Winged seeds are found in :

 
 
 
 

135. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

141. In Pteris, the archegonia are present:

 
 
 
 

142. Yeast grows more rapidly in:

 
 
 
 

143. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

145. Vascular cryptogams is the term used for:

 
 
 
 

146. Which among the following is a shrub?

 
 
 
 

147. Simple polyembryony is found in :

 
 
 
 

148. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

149. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

151. Yeast belongs to class:

 
 
 
 

152. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

154. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. The source of litmus is :

 
 
 
 

159. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

163. Leprosy is caused by:

 
 
 
 

164. In a bacteriophage, DNA is present in:

 
 
 
 

165. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

166. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

172. Tautonyms are illegitimate in:

 
 
 
 

173. Bacteria are placed under:

 
 
 
 

174. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

176. The leaves of Funaria are :

 
 
 
 

177. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

179. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

184. Rhizopus belongs to:

 
 
 
 

185. 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:

 
 
 
 

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

 
 
 
 

187. Absorptive nutrition is:

 
 
 
 

188. Pythium debaryanum is the causative agent of:

 
 
 
 

189. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. Viruses are considered to be:

 
 
 
 

194. The antibiotic is obtained from:

 
 
 
 

195. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

196. Germination of the seed of Pinus is :

 
 
 
 

197. Fairy ring is the name given to:

 
 
 
 

198. Iodine is obtained from :

 
 
 
 

199. Sexual reproduction in Rhizopus is by:

 
 
 
 

200. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

202. Which is a tautonym?

 
 
 
 

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

 
 
 
 

204. In dinoflagellates, the two flagella are:

 
 
 
 

205. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

207. The ferns are usually found:

 
 
 
 

208. Nitrifying bacteria play an important role by converting:

 
 
 
 

209. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

211. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

214. Male gametophyte of Selaginella is found:

 
 
 
 

215. Which of the following statement is correct?

 
 
 
 

216. Polystelic condition is found in:

 
 
 
 

217. Pythium debaryanum is the causative agent of:

 
 
 
 

218. Which class of Protozoa includes all parasitic forms?

 
 
 
 

219. Green plants are classified as :

 
 
 
 

220. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

223. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

225. Mycoplasma is different from bacteria due to:

 
 
 
 

226. Roots are absent in :

 
 
 
 

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

 
 
 
 

228. Who named prion?

 
 
 
 

229. In Cycas the fertilization is:

 
 
 
 

230. Isomorphic type alternation of generation is found in:

 
 
 
 

231. Which part of Riccia bears nurse cells?

 
 
 
 

232. Funaria is :

 
 
 
 

233. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

236. The orders generally have the uniform endings:

 
 
 
 

237. The spur of Pinus roxburghii has :

 
 
 
 

238. Virion refers to:

 
 
 
 

239. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

240. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

242. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

244. Desired type of Cycas can be grown by:

 
 
 
 

245. Gram stain is used to:

 
 
 
 

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

 
 
 
 

247. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

248. Typhoid in man is caused by:

 
 
 
 

249. In Cycas:

 
 
 
 

250. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

254. Funaria is :

 
 
 
 

255. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

257. Photoautotrophic bacteria have:

 
 
 
 

258. Plasmids are:

 
 
 
 

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

 
 
 
 

260. Which lichen is called Reindeer moss?

 
 
 
 

261. Mixed cropping helps :

 
 
 
 

262. Pasteurization of milk involves heating for:

 
 
 
 

263. Bacteria growing on synthetic medium are called:

 
 
 
 

264. The sporangium of fern contains nearly:

 
 
 
 

265. Total parasites belong to:

 
 
 
 

266. In tracheophyta:

 
 
 
 

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

 
 
 
 

268. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

270. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

272. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. 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:

 
 
 
 

277. What is streptomycin?

 
 
 
 

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

 
 
 
 

279.

 

280. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

281. Methanogens belong to:

 
 
 
 

282. Cap cells are found in the filament of:

 
 
 
 

283. The disease apple scab is caused by:

 
 
 
 

284. Rhizopus and yeast are usually:

 
 
 
 

285. Pteridophytes are also known as :

 
 
 
 

286. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

287. The phloem of vascular system of Cycas is :

 
 
 
 

288. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

290. The fungi that grow on wood are called:

 
 
 
 

291. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

293. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

299. In Funaria, calyptra is derived from :

 
 
 
 

300. Yeast is a source of:

 
 
 
 

301. Which of the following is a heterosporous pteridophyte?

 
 
 
 

302. Interferon is a:

 
 
 
 

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

 
 
 
 

304. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

306. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

308.

309. Placenta in fern is:

 
 
 
 

310. Which is the nuclear material in bacteria?

 
 
 
 

311. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

312. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Chief constituents of bordeaux mixture are :

 
 
 
 

321. Iodine is obtained from:

 
 
 
 

322. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

323. The flagella of Chlamydomonas are:

 
 
 
 

324. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

326. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

328. Which of the following shows heterotrichous habit?

 
 
 
 

329. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

331. Indusium in Dryopteris is:

 
 
 
 

332. Azolla and Salvinia both are:

 
 
 
 

333. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

335. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

337. Penicillin was discovered by:

 
 
 
 

338. Maximum diversity of life forms occurs in :

 
 
 
 

339. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

342. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

344. Acetobacter is useful in:

 
 
 
 

345. Infective part of virus was discovered by:

 
 
 
 

346. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

348. Circular DNA is seen in:

 
 
 
 

349. Common phycobiont in a lichen is :

 
 
 
 

350. Viruses have:

 
 
 
 

351. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

353. Chemosynthetic bacteria are:

 
 
 
 

354. Kuru, a human disease is caused by:

 
 
 
 

355. The tree fern is:

 
 
 
 

356. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

358. The spermatozoids of Cycas are :

 
 
 
 

359. Oswald Tippo’s classification was based on :

 
 
 
 

360. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

363. Which of the following have a prokaryotic cell?

 
 
 
 

364. Which organisms are the oldest life forms?

 
 
 
 

365. Select the correct statement: (NEET 2016)

 
 
 
 

366. The smallest unit of classification is:

 
 
 
 

367. The archegonia in Selaginella develop on:

 
 
 
 

368. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

370. The lichens growing on rocks are called :

 
 
 
 

371. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

373. Antibiotics cure the disease by:

 
 
 
 

374. Ulothrix produces :

 
 
 
 

375. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

377. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

379. TMV was isolated in crystalline form by:

 
 
 
 

380. True sexuality is not found in:

 
 
 
 

381. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

383. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. 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:

 
 
 
 

389. Most of the algae are :

 
 
 
 

390. 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:

 
 
 
 

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

 
 
 
 

392. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

397. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

400. Coenogamete is found in:

 
 
 
 

401. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. The male gametes of Pinus are :

 
 
 
 

405. White rust of crucifers is caused by:

 
 
 
 

406. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

408. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

410. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

412. Which of the following statements is not correct?

 
 
 
 

413. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

415. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

417. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

420. Black rust of wheat is caused by:

 
 
 
 

421. The root nodules of leguminous plants contain:

 
 
 
 

422. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

424. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

429. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

431. Little leaf disease of Brinjal is caused by:

 
 
 
 

432. Small epidermal swellings due to infection are called :

 
 
 
 

433. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

436. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

438. 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?

 
 
 
 

439. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

441. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

446. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

448. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

450. Pneumonia is caused by:

 
 
 
 

451. Clostridium can:

 
 
 
 

452. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

460. Ethylene oxide is widely used to:

 
 
 
 

461. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

463. Centric discoid form of diatom is:

 
 
 
 

464. The genetic material of poxvirus is:

 
 
 
 

465. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. The term stele was given by:

 
 
 
 

471. The upper region of moss capsule is :

 
 
 
 

472. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

474. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

481.

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

 
 
 
 

483. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

485. Select the wrong statement:

 
 
 
 

486. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

488. The development of Selaginella embryo is:

 
 
 
 

489. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

491. The truncated cone of HIV consists of:

 
 
 
 

492. Cellular slime mold is:

 
 
 
 

493. Cycas is :

 
 
 
 

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

 
 
 
 

495. Banana bunchy top is caused by :

 
 
 
 

496. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. In Funaria :

 
 
 
 

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

 
 
 
 

502. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

503. Transfusion tissue is present in the leaflet of:

 
 
 
 

504. Reserve food in Euglena is:

 
 
 
 

505. The prothallus of fern represents the plant:

 
 
 
 

506. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. Most resistant spore in bacteria is:

 
 
 
 

510. Majority of lichens are :

 
 
 
 

511. Seeds are characteristically found in:

 
 
 
 

512. The ascus of yeast contains:

 
 
 
 

513. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

515. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

519. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Lichens are pioneers of vegetation in a :

 
 
 
 

523. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

528. Meristele of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

531. Which is absent from the xylem of Cycas?

 
 
 
 

532. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

534. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

540. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. The fungi are mostly:

 
 
 
 

544. Pollination drop is:

 
 
 
 

545. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

548. What are plasmids?

 
 
 
 

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

 
 
 
 

550. Cycas is similar to a mustard plant :

 
 
 
 

551. Lichens are ecologically important because :

 
 
 
 

552. Amoeba is a member of the phylum:

 
 
 
 

553. The smallest bacterium is:

 
 
 
 

554. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

557. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

559. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

561. 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?

 
 
 
 

562. Fern plants are:

 
 
 
 

563. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

564. In Pteris, the roots are:

 
 
 
 

565. Which is a fungicide?

 
 
 
 

566. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

570. Selaginella differs from Moss in having:

 
 
 
 

571. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

573. Ergot of rye is caused by:

 
 
 
 

574. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. Which of the following are absent in Mycoplasma?

 
 
 
 

578. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

580. The disease symptom necrosis refers to :

 
 
 
 

581. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. Ergot is obtained from :

 
 
 
 

592. Diploxylic vascular bundles are found in:

 
 
 
 

593. Botulism is a:

 
 
 
 

594. Longest known virus is:

 
 
 
 

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

 
 
 
 

596. In moss, peristomial teeth are:

 
 
 
 

597. Pteridophyta are also called:

 
 
 
 

598. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

600. Protists which are diploid reproduce sexually by:

 
 
 
 

601. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

609. Late blight of potato is caused by :

 
 
 
 

610. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

617. The leaves of Funaria are :

 
 
 
 

618. Nannandria are:

 
 
 
 

619. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

622. Which of the following is true for viruses?

 
 
 
 

623. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

625. Milk is converted to curd by:

 
 
 
 

626. Endemic plants are characterised by their:

 
 
 
 

627. Mostly type of zygospore in Ulothrix is:

 
 
 
 

628. Male gametes in Dryopteris are:

 
 
 
 

629. The gametophyte of fern is as:

 
 
 
 

630. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

632. Cell walls of Gram-positive bacteria contain:

 
 
 
 

633. Viroids have:

 
 
 
 

634. Chemosynthetic bacteria are:

 
 
 
 

635. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

636. Parmelia belongs to :

 
 
 
 

637. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

639. Mycoplasma are sensitive to:

 
 
 
 

640. The largest alga is:

 
 
 
 

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

 
 
 
 

642. 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:

 
 
 
 

643. Which is a gametophytic tissue?

 
 
 
 

644. How a fern differs from a moss?

 
 
 
 

645. In Selaginella, the microsporangia are:

 
 
 
 

646. E coli is a:

 
 
 
 

647. The chief characteristic of class Ascomycetes is:

 
 
 
 

648. Cycas is:

 
 
 
 

649. Broad spectrum antibiotic is, which:

 
 
 
 

650. Lichen show :

 
 
 
 

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

 
 
 
 

652. LSD is:

 
 
 
 

653. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

655. Bacteria are found everywhere, except:

 
 
 
 

656. In Gymnosperms endosperm is a:

 
 
 
 

657. The gametophyte of moss has distinct phases :

 
 
 
 

658. Embryophyta includes:

 
 
 
 

659. Leaf spot of groundnut is caused by :

 
 
 
 

660. Heterospory and ligulate leaves are a feature of:

 
 
 
 

661. The chromosomal number in:

 
 
 
 

662. Which have the largest antherozoid?

 
 
 
 

663. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

665. The Rhizopus is:

 
 
 
 

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

 
 
 
 

667. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

669. All protozoans possess:

 
 
 
 

670. Pollination in Pinus is :

 
 
 
 

671. The seedless plants which possess vascular tissues are:

 
 
 
 

672. Ovary is absent in :

 
 
 
 

673. Pasteur is famous for his:

 
 
 
 

674. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

676. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

678. Azolla growing in paddy fields helps in:

 
 
 
 

679. Red rot of sugarcane is caused by :

 
 
 
 

680. What is absent in Deuteromycetes?

 
 
 
 

681. Spermatophyta are characterized by producing:

 
 
 
 

682. The stele of Dryopteris is a:

 
 
 
 

683. Most appropriate word for protozoans is:

 
 
 
 

684. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

695. Mucilaginous canals in Cycas are found in :

 
 
 
 

696. Lichens form the first community in

 
 
 
 

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

 
 
 
 

698. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

700. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

702. The order generally ends with:

 
 
 
 

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

 
 
 
 

704. Sometimes the bacterial cell is enclosed in:

 
 
 
 

705. The first to isolate a plant virus was:

 
 
 
 

706. Protistan algae obtain their food as:

 
 
 
 

707. Which causes red tide?

 
 
 
 

708. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

714. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

716. 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:

 
 
 
 

717. Lichens reproduce by :

 
 
 
 

718. The group algae possesses representatives belonging to kingdom:

 
 
 
 

719. Which condition is found in Cycas?

 
 
 
 

720. Which of the following does not contain chlorophyll?

 
 
 
 

721. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

729. Pinus is:

 
 
 
 

730. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

732. Water bloom is generally caused by :

 
 
 
 

733. Who discovered streptomycin?

 
 
 
 

734. One of the distinctive feature of Spirogyra is :

 
 
 
 

735. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. What is a vector?

 
 
 
 

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

 
 
 
 

750. Psilotum is:

 
 
 
 

751. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

753. Virus and bacteriophage are made-up of:

 
 
 
 

754. The lambda phase is a:

 
 
 
 

755. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

757. Detailed study of bacteriophage was made by:

 
 
 
 

758. The mycelium of Rhizopus is:

 
 
 
 

759. What is special feature of fern archegonia?

 
 
 
 

760. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

765. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

767. The rhizoids of Funaria are :

 
 
 
 

768. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

770. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

772. Ginkgo biloba is a:

 
 
 
 

773. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

775. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

779. The similarity between cyanobacteria and bacteria:

 
 
 
 

780. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

782. Liverworts are included in :

 
 
 
 

783. Fern prothallus is:

 
 
 
 

784. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

786. Protozoans are considered animals because these are:

 
 
 
 

787. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

789. Bryophyta have a special character from other plants:

 
 
 
 

790. Fruits are not found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

794. Standard size of a herbarium sheet is:

 
 
 
 

795. Which of the following are included in Tracheophyta?

 
 
 
 

796. . Tapetum develops in:

 
 
 
 

797. Funaria are commonly found :

 
 
 
 

798. Zoogametes are not found in:

 
 
 
 

799. Vegetative reproduction in Cycas is by means of :

 
 
 
 

800. To which country Antony van Leeuwenhoek belong?

 
 
 
 

801. Black rust of wheat is caused by:

 
 
 
 

802. Bacteriophages have been used as:

 
 
 
 

803. How is moss different from fern?

 
 
 
 

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

 
 
 
 

805. Reproduction in Cycas takes place by :

 
 
 
 

806. Most primitive embryophytes are placed in :

 
 
 
 

807. Which group of algae have an incipient nucleus?

 
 
 
 

808. Mycoplasma are:

 
 
 
 

809. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

811. The archegonia of Selaginella are differentiated by:

 
 
 
 

812. The tallest moss in the world is :

 
 
 
 

813. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

818. Antibiotic has been extracted from :

 
 
 
 

819. Embryo formation is not known in :

 
 
 
 

820. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

822. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

825. Select the wrong statement:

 
 
 
 

826. Ectocarpus produces:

 
 
 
 

827. Late blight of potato is caused by:

 
 
 
 

828. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

830. The fungi used as food are:

 
 
 
 

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

 
 
 
 

832. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

834. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

836. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

838. In angiosperms double fertilization represents:

 
 
 
 

839. Pinus microsporophyll bears:

 
 
 
 

840. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

842. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

844. John Hutchinson divided dicots into two divisions:

 
 
 
 

845. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

847. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

854. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

856. An Hfr bacterium is one that contains:

 
 
 
 

857. Special feature of pollen grains of Pinus is :

 
 
 
 

858. Asexual reproductive body of Volvox is called:

 
 
 
 

859. Fern prothallus produces:

 
 
 
 

860. Fertility of the soil is increased by:

 
 
 
 

861. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

863. Penicillin is obtained from:

 
 
 
 

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