Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. What is a vector?

 
 
 
 

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

 
 
 
 

7. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

8. Etiology includes the study of :

 
 
 
 

9. Metulae are found in:

 
 
 
 

10. 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:

 
 
 
 

11. Lichens reproduce by :

 
 
 
 

12. Methanogens belong to:

 
 
 
 

13. The gametophyte produced by apospory is :

 
 
 
 

14. Fern prothallus produces:

 
 
 
 

15. Who named prion?

 
 
 
 

16. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

18. Which of the following is true for Selaginella?

 
 
 
 

19. Banana bunchy top is caused by :

 
 
 
 

20. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

25.

26. The gametophyte of moss has distinct phases :

 
 
 
 

27. Placenta in fern is:

 
 
 
 

28. Sexual reproduction in Rhizopus is by:

 
 
 
 

29. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. Which class of Protozoa includes all parasitic forms?

 
 
 
 

34. Funaria is :

 
 
 
 

35. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

37. Bryophyta have been placed in cryptogams because:

 
 
 
 

38. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

40. The word “sea weeds” is used for:

 
 
 
 

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

 
 
 
 

42. Spermatophyta are characterized by producing:

 
 
 
 

43. The sporangiophores in Rhizopus are:

 
 
 
 

44. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

46. Smut of maize is caused by :

 
 
 
 

47. Embryophyta includes :

 
 
 
 

48. Which have the largest antherozoid?

 
 
 
 

49. Which one of the following is a monocot?

 
 
 
 

50. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. Fruits are not found in:

 
 
 
 

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

 
 
 
 

59. In a diplontic life cycle:

 
 
 
 

60. Triple antigen injection or vaccine are for:

 
 
 
 

61. Mycoplasma are:

 
 
 
 

62. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

64. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Lichen show :

 
 
 
 

68. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. The role of meiosis is for:

 
 
 
 

75. Bivalved siliceous shell or frustule occur in:

 
 
 
 

76. Which of the following are absent in Mycoplasma?

 
 
 
 

77. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Which is not found in bacteria?

 
 
 
 

89. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

95. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

97. Late blight of potato is caused by:

 
 
 
 

98. The upper region of moss capsule is :

 
 
 
 

99. The chief characteristic of bryophyta is that :

 
 
 
 

100. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

102. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

104. Vascular cryptogam is the term used for :

 
 
 
 

105. Standard size of a herbarium sheet is:

 
 
 
 

106. Bacteriophage consists of:

 
 
 
 

107. Cap cells are found in the filament of:

 
 
 
 

108. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Fairy ring is the name given to:

 
 
 
 

112. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

114. What are Cyanobacteria?

 
 
 
 

115. Circular DNA is seen in:

 
 
 
 

116. The chloroplast of Chlamydomonas are:

 
 
 
 

117. Cycas plant in appearance resembles :

 
 
 
 

118. Which is a redwood tree?

 
 
 
 

119. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

121. Pinus is:

 
 
 
 

122. Most common type of conjugation in Spirogyra is :

 
 
 
 

123. Which fixes atmospheric nitrogen?

 
 
 
 

124. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Sometimes the bacterial cell is enclosed in:

 
 
 
 

129. Nitrogen-fixing bacteria may be located:

 
 
 
 

130. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Downy mildew disease is caused by :

 
 
 
 

135. Ovary is absent in:

 
 
 
 

136. Ovules are not found enclosed in ovary of:

 
 
 
 

137. In Cycas the fertilization is:

 
 
 
 

138. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

139. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

141. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

143. The group algae possesses representatives belonging to kingdom:

 
 
 
 

144. Most primitive embryophytes are placed in :

 
 
 
 

145. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

149. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

155. Gram stain is used to:

 
 
 
 

156. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Germ theory of disease was proposed by:

 
 
 
 

161. Azolla and Salvinia both are:

 
 
 
 

162. The chief characteristic of class Ascomycetes is:

 
 
 
 

163. Which group of algae have an incipient nucleus?

 
 
 
 

164. Male gametophyte of Selaginella is found:

 
 
 
 

165. The mode of nutrition of bacteria is usually:

 
 
 
 

166. Which of the following does not contain chlorophyll?

 
 
 
 

167. The antibiotic is obtained from:

 
 
 
 

168. 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?

 
 
 
 

169. Lichens are ecologically important because :

 
 
 
 

170. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

174. In moss, calyptra is formed from:

 
 
 
 

175. The first to isolate a plant virus was:

 
 
 
 

176. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. Generic name of mango is:

 
 
 
 

181. Black rust of wheat is caused by:

 
 
 
 

182. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

186. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

189. Leprosy is caused by:

 
 
 
 

190. Cycas is different from mango in :

 
 
 
 

191. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. The spermatozoids of Cycas are :

 
 
 
 

198. Green plants are classified as :

 
 
 
 

199. The two conjugating gametangia of Rhizopus are:

 
 
 
 

200. In Gymnosperms endosperm is a:

 
 
 
 

201. Which among the following is a shrub?

 
 
 
 

202. The root nodules of leguminous plants contain:

 
 
 
 

203. Interferon is a:

 
 
 
 

204. Pinus gerardiana is :

 
 
 
 

205. In Funaria, calyptra is derived from :

 
 
 
 

206. The sporangium of fern contains nearly:

 
 
 
 

207. Reserve food in Euglena is:

 
 
 
 

208. The source of litmus is :

 
 
 
 

209. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

212. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

215. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

217. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

219. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

222. The fungi are mostly:

 
 
 
 

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

 
 
 
 

224. Which is an edible fungus?

 
 
 
 

225. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

226. The zoospores of Ulothrix are :

 
 
 
 

227. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

229. Simple polyembryony is found in :

 
 
 
 

230. Parmelia belongs to :

 
 
 
 

231. Funaria can be differentiated from Cycas :

 
 
 
 

232. The spur of Pinus roxburghii has :

 
 
 
 

233. In tracheophyta:

 
 
 
 

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

 
 
 
 

235. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

236. Majority of lichens are :

 
 
 
 

237. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

239. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

244. Heterosporous pteridophytes always form:

 
 
 
 

245. Proembryo in Pinus is :

 
 
 
 

246. Bentham and Hooker placed gymnosperms:

 
 
 
 

247. Botulism is a:

 
 
 
 

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

 
 
 
 

249. Cell walls of Gram-positive bacteria contain:

 
 
 
 

250. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

252. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

254. Halophiles are the bacteria that require for growth:

 
 
 
 

255. Mycoplasma are sensitive to:

 
 
 
 

256. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

258. Select the wrong statement:

 
 
 
 

259. Asexual reproductive body of Volvox is called:

 
 
 
 

260. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

262. Meristele of fern is:

 
 
 
 

263. Funaria is :

 
 
 
 

264. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

266. Economic importance of bacteria lies in their being:

 
 
 
 

267. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Lichens show :

 
 
 
 

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

 
 
 
 

272. The disease symptom necrosis refers to :

 
 
 
 

273. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

286. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

288. The gametophyte of fern is as:

 
 
 
 

289. In Cycas which structure is equivalent to stamen?

 
 
 
 

290. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

292. 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?

 
 
 
 

293. Isomorphic type alternation of generation is found in:

 
 
 
 

294. Most appropriate word for protozoans is:

 
 
 
 

295. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

298. Facultative saprophyte is:

 
 
 
 

299. The phloem of vascular system of Cycas is :

 
 
 
 

300. Who discovered heterothallism in fungi?

 
 
 
 

301. Tautonyms are illegitimate in:

 
 
 
 

302. The megasporangium of Selaginella is:

 
 
 
 

303. Bacteria were first discovered by:

 
 
 
 

304. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

309. The seedless plants which possess vascular tissues are:

 
 
 
 

310. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

312. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Rhizoids of Riccia are :

 
 
 
 

322. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

324. The coralloid roots are :

 
 
 
 

325. The prothallus of fern is:

 
 
 
 

326. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

328. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

330. Pythium debaryanum is the causative agent of:

 
 
 
 

331. 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?

 
 
 
 

332. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

334. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. Multicellular and jacketed sex organs are found in :

 
 
 
 

339. Bacteria are placed under:

 
 
 
 

340. Cryptogams include :

 
 
 
 

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

 
 
 
 

342. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Embryo formation is not known in :

 
 
 
 

346. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

348. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

351. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Pteridophytes are also known as :

 
 
 
 

355. Fern plants are:

 
 
 
 

356. The zygospore in Rhizopus on germination forms:

 
 
 
 

357. Most of the lichens are composed of :

 
 
 
 

358. The chromosomal number in:

 
 
 
 

359. Chief constituents of bordeaux mixture are :

 
 
 
 

360. Fertility of the soil is increased by:

 
 
 
 

361. Protists which are diploid reproduce sexually by:

 
 
 
 

362. Psilotum is:

 
 
 
 

363. Which is a tautonym?

 
 
 
 

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

 
 
 
 

365. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

367. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

369. Saccharomyces is well known for:

 
 
 
 

370. The truncated cone of HIV consists of:

 
 
 
 

371.

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

 
 
 
 

373. Heterocysts are found in :

 
 
 
 

374. The largest known bacterium is:

 
 
 
 

375. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

379. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

381. Genetic material of TMV is:

 
 
 
 

382. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

385. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

387. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

389. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

392. White rust of crucifers is caused by:

 
 
 
 

393. In dinoflagellates, the two flagella are:

 
 
 
 

394. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. The sporophyte of Riccia is :

 
 
 
 

399. Where does meiosis occur in yeast?

 
 
 
 

400. Cyathia is characterized by:

 
 
 
 

401. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

406. The gametophyte of fern bears:

 
 
 
 

407. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

409. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Discovery of penicillin was based on:

 
 
 
 

414. The tallest moss in the world is :

 
 
 
 

415. Pteridophyta are also called:

 
 
 
 

416. Water-net is the name of:

 
 
 
 

417. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

420. Rhizophore of Selaginella is:

 
 
 
 

421. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

424. Plasmids are:

 
 
 
 

425. Yeast is a source of:

 
 
 
 

426. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

429. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

432. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

434. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

437. First animal pathogenic virus was discovered by:

 
 
 
 

438. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

440. The fungi used as food are:

 
 
 
 

441. The largest alga is:

 
 
 
 

442. In moss, reduction division occurs in :

 
 
 
 

443. The term stele was given by:

 
 
 
 

444. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

449. Which statement is wrong in regard to bacteria?

 
 
 
 

450. Acetobacter is useful in:

 
 
 
 

451. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

455. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

456. Which of the following lichens is harmful?

 
 
 
 

457. Which is a fungicide?

 
 
 
 

458. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

460. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

462. Bacteria which are spherical are called:

 
 
 
 

463. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

465. The leaves of Funaria are :

 
 
 
 

466. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. Which is the correct statement about Selaginella?

 
 
 
 

470. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

472. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

475. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

481. Ergot of rye is caused by:

 
 
 
 

482. Each chloroplast in Spirogyra bears :

 
 
 
 

483. Ulothrix produces :

 
 
 
 

484. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

486. Spermatophyta are characterized by producing:

 
 
 
 

487. Spores of which plants have chloroplast:

 
 
 
 

488. All archaebacteria lack:

 
 
 
 

489. 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?

 
 
 
 

490.

 

491. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

493. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

495. What is absent in Deuteromycetes?

 
 
 
 

496. The lichens growing on rocks are called :

 
 
 
 

497. Cellular slime mold is:

 
 
 
 

498. The mycelium of Rhizopus is:

 
 
 
 

499. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

506. Which of the following are included in Tracheophyta?

 
 
 
 

507. Amoeba is a member of the phylum:

 
 
 
 

508. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

510. Transfusion tissue is present in the leaflet of:

 
 
 
 

511. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

512. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

514. Roots are absent in :

 
 
 
 

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

 
 
 
 

516. Streptomyces falls under:

 
 
 
 

517. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

519. Mostly type of zygospore in Ulothrix is:

 
 
 
 

520. Detailed study of bacteriophage was made by:

 
 
 
 

521. Vascular cryptogams is the term used for:

 
 
 
 

522. Disease resistant plant varieties can be produced by :

 
 
 
 

523. Lichens are pioneers of vegetation in a :

 
 
 
 

524. In moss, stomata are found:

 
 
 
 

525. Number of capsomeres forming capsid of TMV is:

 
 
 
 

526. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. Heterospory and ligulate leaves are a feature of:

 
 
 
 

534. Who among the following discovered virus?

 
 
 
 

535. Photoautotrophic bacteria have:

 
 
 
 

536. Cycas is similar to a mustard plant :

 
 
 
 

537. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

545. Quarantine regulations are concerned with:

 
 
 
 

546. Heterotrichous habit means :

 
 
 
 

547. The sporophyte of Riccia is represented by :

 
 
 
 

548. Which is the nuclear material in bacteria?

 
 
 
 

549. Smallpox is caused by:

 
 
 
 

550. Desired type of Cycas can be grown by:

 
 
 
 

551. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

553. Liverworts are included in :

 
 
 
 

554. In Selaginella, the microsporangia are:

 
 
 
 

555. To which class Riccia belongs :

 
 
 
 

556. Cyanophage is a virus that attacks:

 
 
 
 

557. Redness of red sea is due to :

 
 
 
 

558. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

560. Typhoid in man is caused by:

 
 
 
 

561. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

563. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

565. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. Fruits are not found in :

 
 
 
 

569. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

571. Rhizopus and yeast are usually:

 
 
 
 

572. The microsporophylls on the cone of Cycas are :

 
 
 
 

573. In Pteris, the archegonia are present:

 
 
 
 

574. All algae have:

 
 
 
 

575. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

577. Cycas is :

 
 
 
 

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

 
 
 
 

579. Most resistant spore in bacteria is:

 
 
 
 

580. Which of the following are included in Tracheophyta?

 
 
 
 

581. LSD is:

 
 
 
 

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

 
 
 
 

583. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

585. In moss, peristomial teeth are:

 
 
 
 

586. Oswald Tippo’s classification is:

 
 
 
 

587. The nucleus of bacteria is:

 
 
 
 

588. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

589. Pasteur is famous for his:

 
 
 
 

590. Pollination drop is:

 
 
 
 

591. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

593. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

595. Special feature of pollen grains of Pinus is :

 
 
 
 

596. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

598. Antibiotics cure the disease by:

 
 
 
 

599. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

601. The fungi are usually:

 
 
 
 

602. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

604. Water bloom is generally caused by :

 
 
 
 

605. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

607. Total parasites belong to:

 
 
 
 

608. Photosynthetic protists belong to:

 
 
 
 

609. Ectocarpus produces:

 
 
 
 

610. Ergot is obtained from :

 
 
 
 

611. Longest known virus is:

 
 
 
 

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

 
 
 
 

613. True sexuality is not found in:

 
 
 
 

614. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

617. What are plasmids?

 
 
 
 

618. Streptomycin is obtained from:

 
 
 
 

619. Select the correct statement: (NEET 2016)

 
 
 
 

620. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

622. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

627. The similarity between cyanobacteria and bacteria:

 
 
 
 

628. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

630. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

632. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. Spirogyra differs from moss protonema in having :

 
 
 
 

636. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

639. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

641. Pasteurization of milk involves heating for:

 
 
 
 

642. 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:

 
 
 
 

643. The development of Selaginella embryo is:

 
 
 
 

644. Pasteurized milk is:

 
 
 
 

645. What is special feature of fern archegonia?

 
 
 
 

646. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

648. Green plants are classified as:

 
 
 
 

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

 
 
 
 

650. The leaf of Cycas shows:

 
 
 
 

651. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Absorptive nutrition is:

 
 
 
 

659. Pollination in Cycas takes place by :

 
 
 
 

660. The ferns are usually found:

 
 
 
 

661. The tree fern is:

 
 
 
 

662. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

664. Fern phloem lacks:

 
 
 
 

665. Pneumonia is caused by:

 
 
 
 

666. The male gametes of Pinus are :

 
 
 
 

667. Saccharomyces ludwigii ascus produces:

 
 
 
 

668. The fern plant is:

 
 
 
 

669. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

670. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. Enzymes are absent in:

 
 
 
 

674. In Herpes virus DNA is:

 
 
 
 

675. All protozoans possess:

 
 
 
 

676. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

678. . Tapetum develops in:

 
 
 
 

679. Facultative parasite is:

 
 
 
 

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

 
 
 
 

681. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

683. Leaf spot of groundnut is caused by :

 
 
 
 

684. Cycas is:

 
 
 
 

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

 
 
 
 

686. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

688. What is the role of nitrifying bacteria?

 
 
 
 

689. In Funaria :

 
 
 
 

690. Winged pollen grains are found in :

 
 
 
 

691. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

693. The smallest bacterium is:

 
 
 
 

694. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

696. Which is a gametophytic tissue?

 
 
 
 

697. How is moss different from fern?

 
 
 
 

698. Sporophyte of fern is:

 
 
 
 

699. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. Azolla growing in paddy fields helps in:

 
 
 
 

706. The most primitive vascular plants is:

 
 
 
 

707. 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:

 
 
 
 

708. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

713. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

715. NBG of Lucknow is now named as:

 
 
 
 

716. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

719. Which causes red tide?

 
 
 
 

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

 
 
 
 

721. Red rot of sugarcane is caused by:

 
 
 
 

722. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

726. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. Which bacteria convert nitrate into nitrogen?

 
 
 
 

730. Who discovered streptomycin?

 
 
 
 

731. Pseudomycelium is found in:

 
 
 
 

732. Fern prothallus is:

 
 
 
 

733. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

734. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

737. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

743. How a fern differs from a moss?

 
 
 
 

744.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

748. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

751. The Rhizopus is:

 
 
 
 

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

 
 
 
 

753. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

755. The ascus of yeast contains:

 
 
 
 

756. Maximum diversity of life forms occurs in :

 
 
 
 

757. A gill of Agaricus:

 
 
 
 

758. Bacteriophages have been used as:

 
 
 
 

759. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. Early blight of potato is caused by:

 
 
 
 

763. Which of the following is a monocot?

 
 
 
 

764. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

766. What is streptomycin?

 
 
 
 

767. Choose the correct statement about Spirogyra:

 
 
 
 

768. Little leaf disease of Brinjal is caused by:

 
 
 
 

769. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

771. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

773. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

778. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

781. Winged seeds are found in :

 
 
 
 

782. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

784. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

785. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

789. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

792. The DNA of E coli is:

 
 
 
 

793. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

795. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

797. 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:

 
 
 
 

798. Centric discoid form of diatom is:

 
 
 
 

799. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

801. The order generally ends with:

 
 
 
 

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

 
 
 
 

803. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

805. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

807. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

809. Funaria is a Bryophyta because :

 
 
 
 

810. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

815. The sexual reproductive organs in Rhizopus are:

 
 
 
 

816. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

818. Mycoplasma is different from bacteria due to:

 
 
 
 

819. Seeds are characteristically found in:

 
 
 
 

820. Zoogametes are not found in:

 
 
 
 

821. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

822. Germination of the seed of Pinus is :

 
 
 
 

823. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

827. Ginkgo biloba is a:

 
 
 
 

828. Nitrifying bacteria play an important role by converting:

 
 
 
 

829. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

832. Iodine is obtained from:

 
 
 
 

833. Sexual reproduction of lichen is due to :

 
 
 
 

834. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

836. Lichens form the first community in

 
 
 
 

837. Viruses are commonly transmitted in plants through:

 
 
 
 

838. Embryophyta includes:

 
 
 
 

839. The photosynthetic protists are:

 
 
 
 

840. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

844. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

846. Water-borne bacterial diseases are:

 
 
 
 

847. Enteric bacteria are those bacteria that live:

 
 
 
 

848. Which of the following statements is not correct?

 
 
 
 

849. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

852. In Cycas:

 
 
 
 

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

 
 
 
 

854. Soil fertility is lost by the activities of:

 
 
 
 

855. Helotism word is used for the symbiosis between :

 
 
 
 

856. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

859. 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:

 
 
 
 

860. Black rust of wheat is caused by:

 
 
 
 

861. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

863. In moss, sporogenous tissue arises from:

 
 
 
 

864. Chemosynthetic bacteria are: