Quiz_Random

1. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

3. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

5. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Cocci types of bacteria are:

 
 
 
 

9. Embryophyta includes:

 
 
 
 

10. Which of the following is a parasitic algae?

 
 
 
 

11. The archegonia in Selaginella develop on:

 
 
 
 

12. Placenta in fern is:

 
 
 
 

13. Absorptive nutrition is:

 
 
 
 

14. Vegetative reproduction in Cycas is by means of :

 
 
 
 

15. Antibiotic has been extracted from :

 
 
 
 

16. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

18. The leaves of Funaria are :

 
 
 
 

19. Red rot of sugarcane is caused by:

 
 
 
 

20. The gametophyte of fern is as:

 
 
 
 

21. The fern plant is:

 
 
 
 

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

 
 
 
 

23. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

25. The mode of nutrition of bacteria is usually:

 
 
 
 

26. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

27. Which of the following is a monocot?

 
 
 
 

28. Cryptogams include :

 
 
 
 

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

 
 
 
 

30. What is mycorrhiza?

 
 
 
 

31. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

33. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

35. The fungi are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

42. Selaginella differs from Moss in having:

 
 
 
 

43. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. The alga, Spirogyra are found in :

 
 
 
 

48. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. In Cycas microsporangia are borne on:

 
 
 
 

52. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

54. The genetic material of poxvirus is:

 
 
 
 

55. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

57. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

62. Protozoans are considered animals because these are:

 
 
 
 

63. Triple antigen injection or vaccine are for:

 
 
 
 

64. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

66. Which is an edible fungus?

 
 
 
 

67. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

73. Most common type of conjugation in Spirogyra is :

 
 
 
 

74. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Enzymes are absent in:

 
 
 
 

78. Number of capsomeres forming capsid of TMV is:

 
 
 
 

79. Cycas is:

 
 
 
 

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

 
 
 
 

81. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

86. Oswald Tippo’s classification was based on :

 
 
 
 

87. Embryo formation is not known in :

 
 
 
 

88. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. 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:

 
 
 
 

92. Ovules are not found enclosed in ovary in :

 
 
 
 

93. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. The gametophyte produced by apospory is :

 
 
 
 

99. Smut of maize is caused by :

 
 
 
 

100. Streptomycin is obtained from:

 
 
 
 

101. Bentham and Hooker placed gymnosperms:

 
 
 
 

102. Protists which are diploid reproduce sexually by:

 
 
 
 

103. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

105. The fungi are mostly:

 
 
 
 

106. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

107. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

110. Spermatophyta are characterized by producing:

 
 
 
 

111. Which group of algae have an incipient nucleus?

 
 
 
 

112. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

114. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

120. Parmelia belongs to :

 
 
 
 

121. Germ theory of disease was proposed by:

 
 
 
 

122. Heterocysts are found in :

 
 
 
 

123. Diphtheria is caused by:

 
 
 
 

124. Each chloroplast in Spirogyra bears :

 
 
 
 

125. Lichens show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

130. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

132. Cycas revoluta is widely grown as :

 
 
 
 

133. Virion refers to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. Winged pollen grains are found in :

 
 
 
 

137. Cycas plant in appearance resembles :

 
 
 
 

138. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

142. Generic name of mango is:

 
 
 
 

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

 
 
 
 

144. Viroids have:

 
 
 
 

145. Fern plants are:

 
 
 
 

146. In Cycas which structure is equivalent to stamen?

 
 
 
 

147. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

149. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

151. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

153. Black rust of wheat is caused by:

 
 
 
 

154. Fertility of the soil is increased by:

 
 
 
 

155. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

157. Nitrifying bacteria play an important role by converting:

 
 
 
 

158. Anoxygenic photosynthesis occurs in:

 
 
 
 

159. The gametophyte of fern bears:

 
 
 
 

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

 
 
 
 

161. Azolla and Salvinia both are:

 
 
 
 

162. Bacteria are found everywhere, except:

 
 
 
 

163. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

164. Acetobacter is useful in:

 
 
 
 

165. The middle sterile part of capsule is called:

 
 
 
 

166. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

168. Which organisms are the oldest life forms?

 
 
 
 

169. The mycelium of Rhizopus is:

 
 
 
 

170. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

174. Mycoplasma are sensitive to:

 
 
 
 

175.

176. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

177. Siphonogamy is found in:

 
 
 
 

178. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

180. Chief constituents of bordeaux mixture are :

 
 
 
 

181. The microsporophylls on the cone of Cycas are :

 
 
 
 

182. Which of the following is true for viruses?

 
 
 
 

183. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

186. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

188. Lichens are ecologically important because :

 
 
 
 

189. Discovery of penicillin was based on:

 
 
 
 

190. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

192. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. What is the role of nitrifying bacteria?

 
 
 
 

196. In moss, conducting tissue is made up of

 
 
 
 

197. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

202. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

204. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

206. Bacteria are considered to be plants because they:

 
 
 
 

207. Halophiles are the bacteria that require for growth:

 
 
 
 

208. Which condition is found in Cycas?

 
 
 
 

209. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

213. Lichen show :

 
 
 
 

214. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

216. True sexuality is not found in:

 
 
 
 

217. Which part of Riccia bears nurse cells?

 
 
 
 

218. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. The rhizoids of Funaria are :

 
 
 
 

222. Green plants are classified as :

 
 
 
 

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

 
 
 
 

224. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

226. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

229. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

231. Pasteur is famous for his:

 
 
 
 

232. In Cycas the fertilization is:

 
 
 
 

233. The chloroplast in Ulothrix is :

 
 
 
 

234. Chemosynthetic bacteria are:

 
 
 
 

235. The sori in Dryopteris are found on:

 
 
 
 

236. The Rhizopus is:

 
 
 
 

237. Which is a tautonym?

 
 
 
 

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

 
 
 
 

239. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. In moss, reduction division occurs in :

 
 
 
 

243. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

246. Fern phloem lacks:

 
 
 
 

247. A gill of Agaricus:

 
 
 
 

248. Mucilaginous canals in Cycas are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

259. Club moss is the common name of :

 
 
 
 

260. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

262. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

264. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

266. 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?

 
 
 
 

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

 
 
 
 

268. Etiology includes the study of :

 
 
 
 

269. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

271. Mycoplasma are:

 
 
 
 

272. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

273. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

275. The leaves of Funaria are :

 
 
 
 

276. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. Ovary is absent in:

 
 
 
 

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

 
 
 
 

281. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

285. Transfusion tissue is present in the leaflet of:

 
 
 
 

286. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

288. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

292. The photosynthetic protists are:

 
 
 
 

293. Which is a redwood tree?

 
 
 
 

294. Botulinum toxin effects:

 
 
 
 

295. Linnaeus is credited with introducing:

 
 
 
 

296. Lichens reproduce by :

 
 
 
 

297. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

301. The truncated cone of HIV consists of:

 
 
 
 

302. The vascular bundles of Cycas stem are :

 
 
 
 

303. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

310. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

312. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

315. In Cycas:

 
 
 
 

316. Leprosy is caused by:

 
 
 
 

317. In Selaginella, the microsporangia are:

 
 
 
 

318. 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:

 
 
 
 

319. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

321. Which of the following is true for Selaginella?

 
 
 
 

322. The fungi that grow on wood are called:

 
 
 
 

323. The tallest moss in the world is :

 
 
 
 

324. Funaria is a Bryophyta because :

 
 
 
 

325. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

327. Lichens are indicators of :

 
 
 
 

328. Which one of the following statement is wrong?

 
 
 
 

329. The antherozoids of Funaria are :

 
 
 
 

330. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

332. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

334. Saccharomyces is used in:

 
 
 
 

335. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

347. Iodine is obtained from :

 
 
 
 

348. To which country Antony van Leeuwenhoek belong?

 
 
 
 

349. In dinoflagellates, the two flagella are:

 
 
 
 

350. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

352. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

354. To which class Riccia belongs :

 
 
 
 

355. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

357. Reproduction in Rhizopus is:

 
 
 
 

358. Fern prothallus is:

 
 
 
 

359. Methanogens belong to:

 
 
 
 

360. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

363. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

364. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

366. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

368. Reserve food in Euglena is:

 
 
 
 

369. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. 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:

 
 
 
 

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

 
 
 
 

377. Bacteria are placed under:

 
 
 
 

378. Yeast is a source of:

 
 
 
 

379. Green plants are classified as:

 
 
 
 

380. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

382. Pollination in Cycas takes place by :

 
 
 
 

383. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

385. Majority of lichens are :

 
 
 
 

386. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

389. Penicillin is obtained from:

 
 
 
 

390. The roots of Cycas are :

 
 
 
 

391. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

395. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

397. The sexual reproductive organs in Rhizopus are:

 
 
 
 

398. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

404. How a fern differs from a moss?

 
 
 
 

405. Economic importance of bacteria lies in their being:

 
 
 
 

406. The lichens growing on rocks are called :

 
 
 
 

407. Black rust of wheat is caused by:

 
 
 
 

408. In angiosperms double fertilization represents:

 
 
 
 

409. The coralloid roots are :

 
 
 
 

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

 
 
 
 

411. Indusium in Dryopteris is:

 
 
 
 

412. In Pteris, the archegonia are present:

 
 
 
 

413. The chloroplast of Chlamydomonas are:

 
 
 
 

414. An Hfr bacterium is one that contains:

 
 
 
 

415. Synzoospore is produced in:

 
 
 
 

416. 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?

 
 
 
 

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

 
 
 
 

418. 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:

 
 
 
 

419. E coli is a:

 
 
 
 

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

 
 
 
 

421. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

423. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

425. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

427. Bryophyta have a special character from other plants:

 
 
 
 

428.

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

 
 
 
 

430. White rust of crucifers is caused by:

 
 
 
 

431. Which is not true for Escherichia coli?

 
 
 
 

432. Mostly type of zygospore in Ulothrix is:

 
 
 
 

433. TMV was isolated in crystalline form by:

 
 
 
 

434. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

439. Acellular slime mold is/are:

 
 
 
 

440. The prothallus of fern is:

 
 
 
 

441. The antibiotic is obtained from:

 
 
 
 

442. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

443. 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:

 
 
 
 

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

 
 
 
 

445. Ovary is absent in :

 
 
 
 

446. The DNA of E coli is:

 
 
 
 

447. Pasteurized milk is:

 
 
 
 

448. Ergot is obtained from :

 
 
 
 

449. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

451. LSD is:

 
 
 
 

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

 
 
 
 

453. Liverworts are included in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

459. Pollination drop is:

 
 
 
 

460. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

462. What is streptomycin?

 
 
 
 

463. Standard size of a herbarium sheet is:

 
 
 
 

464. 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:

 
 
 
 

465. Meristele of fern is:

 
 
 
 

466. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. Helotism word is used for the symbiosis between :

 
 
 
 

471. Common phycobiont in a lichen is :

 
 
 
 

472. Winged seeds are found in :

 
 
 
 

473. Pinus is:

 
 
 
 

474. Which is a gametophytic tissue?

 
 
 
 

475. Chemosynthetic bacteria are:

 
 
 
 

476. Cyathia is characterized by:

 
 
 
 

477. The tree fern is:

 
 
 
 

478. Pteridophyta are also called:

 
 
 
 

479. Spirogyra differs from moss protonema in having :

 
 
 
 

480. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

482. In Gymnocarpeae the fruiting body is :

 
 
 
 

483. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

485. The fungi used as food are:

 
 
 
 

486. Lichens are the indicator of pollution :

 
 
 
 

487. Fruits are not found in :

 
 
 
 

488. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

490. Which of the following shows heterotrichous habit?

 
 
 
 

491. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

493. Metulae are found in:

 
 
 
 

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

 
 
 
 

495. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

498. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

499. The source of litmus is :

 
 
 
 

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

 
 
 
 

501. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

503. How is moss different from fern?

 
 
 
 

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

 
 
 
 

505. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

509. Which is a fungicide?

 
 
 
 

510. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

512. Red rot of sugarcane is caused by :

 
 
 
 

513. Water bloom is generally caused by :

 
 
 
 

514. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

516. Meiosis in Ulothrix takes place:

 
 
 
 

517. The two conjugating gametangia of Rhizopus are:

 
 
 
 

518. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

520. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

522. Sometimes the bacterial cell is enclosed in:

 
 
 
 

523. Mycoplasma is different from bacteria due to:

 
 
 
 

524. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

527. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

528. Interferon is a:

 
 
 
 

529. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

535. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

537. Select the wrong statement:

 
 
 
 

538. The megasporangium of Selaginella is:

 
 
 
 

539. What is absent in Deuteromycetes?

 
 
 
 

540. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

542. Antibiotics cure the disease by:

 
 
 
 

543. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

549. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

551. Nannandria are:

 
 
 
 

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

 
 
 
 

553. Cell walls of Gram-positive bacteria contain:

 
 
 
 

554. Some diseases caused by bacteria are:

 
 
 
 

555.

 

556. 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?

 
 
 
 

557. The lambda phase is a:

 
 
 
 

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

 
 
 
 

559. Water-net is the name of:

 
 
 
 

560. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. Which of the following have a prokaryotic cell?

 
 
 
 

564. In moss, sporogenous tissue arises from:

 
 
 
 

565. The term stele was given by:

 
 
 
 

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

 
 
 
 

567. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

569. Saccharomyces ludwigii ascus produces:

 
 
 
 

570. Funaria is :

 
 
 
 

571. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

574. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. Pythium debaryanum is the causative agent of:

 
 
 
 

579. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

581. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

583. Bryophyta have been placed in cryptogams because:

 
 
 
 

584. Sporophyte of fern is:

 
 
 
 

585. Select the correct statement: (NEET 2016)

 
 
 
 

586. Isomorphic type alternation of generation is found in:

 
 
 
 

587. Viruses are commonly transmitted in plants through:

 
 
 
 

588. The male gametes of Pinus are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. Pinus microsporophyll bears:

 
 
 
 

592. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

597. Mycoplasmas are not viruses in nature because:

 
 
 
 

598. Who named prion?

 
 
 
 

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

 
 
 
 

600. Heterospory and ligulate leaves are a feature of:

 
 
 
 

601. Clostridium can:

 
 
 
 

602. Vascular cryptogam is the term used for :

 
 
 
 

603. Disease resistant plant varieties can be produced by :

 
 
 
 

604. The megaspore of Selaginella on germination produces:

 
 
 
 

605. The archegonia of Selaginella are differentiated by:

 
 
 
 

606. Which of the following statements is not correct?

 
 
 
 

607. In moss, stomata are found:

 
 
 
 

608. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. The ferns are usually found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

614. What is a vector?

 
 
 
 

615. Bacteria were first discovered by:

 
 
 
 

616. Polystelic condition is found in:

 
 
 
 

617. Rhizopus and yeast are usually:

 
 
 
 

618. Which bacteria convert nitrate into nitrogen?

 
 
 
 

619. Streptomyces falls under:

 
 
 
 

620. Woody climbers are known as :

 
 
 
 

621. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

626. Usually, bacteria reproduce by:

 
 
 
 

627. Lichens form the first community in

 
 
 
 

628. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. Leaf spot of groundnut is caused by :

 
 
 
 

633. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

635. Nitrogen-fixing bacteria may be located:

 
 
 
 

636. Genetic material of TMV is:

 
 
 
 

637. Mycoplasma contains:

 
 
 
 

638. Longest known virus is:

 
 
 
 

639. Botulism is a:

 
 
 
 

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

 
 
 
 

641. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. Pinus gerardiana is :

 
 
 
 

648. Which is not found in bacteria?

 
 
 
 

649. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

651. Roots are absent in :

 
 
 
 

652.

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

656. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

660. Tautonyms are illegitimate in:

 
 
 
 

661. Cellular slime mold is:

 
 
 
 

662. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

664. The smallest bacterium is:

 
 
 
 

665. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

667. Who among the following discovered virus?

 
 
 
 

668. Which of the following are absent in Mycoplasma?

 
 
 
 

669. Smallpox is caused by:

 
 
 
 

670. Where does meiosis occur in yeast?

 
 
 
 

671. The orders generally have the uniform endings:

 
 
 
 

672. In Pteris, the roots are:

 
 
 
 

673. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

676. Germination of the seed of Pinus is :

 
 
 
 

677. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. The largest alga is:

 
 
 
 

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

 
 
 
 

682. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

683. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

685. Asexual reproductive body of Volvox is called:

 
 
 
 

686. Fruiting body of lichens is :

 
 
 
 

687. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

689. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

694. 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:

 
 
 
 

695. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

697. Citrus canker is caused by:

 
 
 
 

698. Most of the algae are :

 
 
 
 

699. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

702. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

705. Most primitive group of vascular plants are:

 
 
 
 

706. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

708. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

710. Psilotum is:

 
 
 
 

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

 
 
 
 

712. Which of the following does not contain chlorophyll?

 
 
 
 

713. Downy mildew disease is caused by :

 
 
 
 

714. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

717. In tracheophyta:

 
 
 
 

718. Banana bunchy top is caused by :

 
 
 
 

719. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

721. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. Most appropriate word for protozoans is:

 
 
 
 

725. The chromosomal number in:

 
 
 
 

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

 
 
 
 

727. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

729. Iodine is obtained from:

 
 
 
 

730. Choose the correct statement about Spirogyra:

 
 
 
 

731. Cycas is :

 
 
 
 

732. The seedless plants which possess vascular tissues are:

 
 
 
 

733. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

740. Gram stain is used to:

 
 
 
 

741. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

742. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

745. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

747. Pseudomycelium is found in:

 
 
 
 

748. Photosynthetic protists belong to:

 
 
 
 

749. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

750. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

752. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. Which of the following statement is correct?

 
 
 
 

757. Saccharomyces is well known for:

 
 
 
 

758. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

762. Who discovered cyanophages?

 
 
 
 

763. In Funaria, calyptra is derived from :

 
 
 
 

764. Which class of Protozoa includes all parasitic forms?

 
 
 
 

765. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

768. Which among the following is a shrub?

 
 
 
 

769. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

772. Early blight of potato is caused by:

 
 
 
 

773. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Pythium debaryanum is the causative agent of:

 
 
 
 

777. Amoeba is a member of the phylum:

 
 
 
 

778. Select the wrong statement:

 
 
 
 

779. Most primitive embryophytes are placed in:

 
 
 
 

780. Which have the largest antherozoid?

 
 
 
 

781. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

783. The spermatozoids of Cycas are :

 
 
 
 

784. Which lichen is called Reindeer moss?

 
 
 
 

785. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

786. Spores of which plants have chloroplast:

 
 
 
 

787. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. Which is the correct statement about Selaginella?

 
 
 
 

792. All algae have:

 
 
 
 

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

 
 
 
 

794. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

798. In a diplontic life cycle:

 
 
 
 

799. The root nodules of leguminous plants contain:

 
 
 
 

800. Club moss and Peat moss belong to:

 
 
 
 

801. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

803. Ovules are not found enclosed in ovary in :

 
 
 
 

804. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Rhizoids of Riccia are :

 
 
 
 

808. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

810. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

812. Male gametophyte of Selaginella is found:

 
 
 
 

813. Sexual reproduction in Rhizopus is by:

 
 
 
 

814. Proembryo in Pinus is :

 
 
 
 

815. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

817. Ulothrix produces :

 
 
 
 

818. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

820. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

822. The sporangia of Selaginella are attached:

 
 
 
 

823. Which statement is wrong in regard to bacteria?

 
 
 
 

824. Facultative parasite is:

 
 
 
 

825. Ectocarpus produces:

 
 
 
 

826. Which fixes atmospheric nitrogen?

 
 
 
 

827. Citrus canker is caused by :

 
 
 
 

828. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

830. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

832. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

837. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Total parasites belong to:

 
 
 
 

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

 
 
 
 

842. Spermatophyta are characterized by producing:

 
 
 
 

843. Cycas is different from mango in :

 
 
 
 

844. Viruses have:

 
 
 
 

845. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. NBG of Lucknow is now named as:

 
 
 
 

849. The gametophyte of moss has distinct phases :

 
 
 
 

850. Photosynthetic bacteria have:

 
 
 
 

851. Bacteria which are spherical are called:

 
 
 
 

852. In moss, sporophyte is formed on:

 
 
 
 

853. Diploxylic vascular bundles are found in:

 
 
 
 

854. The group algae possesses representatives belonging to kingdom:

 
 
 
 

855. Gametophyte is the main plant body in :

 
 
 
 

856. Who discovered heterothallism in fungi?

 
 
 
 

857. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

859. Sporophyte of Funaria is :

 
 
 
 

860. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

862. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

863. Embryophyta includes :

 
 
 
 

864. John Hutchinson divided dicots into two divisions: