Quiz_Random

1. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

8. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. The source of litmus is :

 
 
 
 

15. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Penicillin was discovered by:

 
 
 
 

23. Which is an exception to cell theory?

 
 
 
 

24. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Ovules are not found enclosed in ovary of:

 
 
 
 

29. Cyathia is characterized by:

 
 
 
 

30. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. 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:

 
 
 
 

34. The microsporophylls on the cone of Cycas are :

 
 
 
 

35. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

37. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Facultative saprophyte is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. The phloem of vascular system of Cycas is :

 
 
 
 

45. Facultative parasite is:

 
 
 
 

46. The central part of Funaria axis is :

 
 
 
 

47. In tracheophyta:

 
 
 
 

48. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

49. Which part of Riccia bears nurse cells?

 
 
 
 

50. Most common type of conjugation in Spirogyra is :

 
 
 
 

51. An alga which is rich in proteins:

 
 
 
 

52. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. The prothallus of fern represents the plant:

 
 
 
 

56. What is a vector?

 
 
 
 

57. The development of sporangium in Selaginella is:

 
 
 
 

58. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

63. Amoeba is a member of the phylum:

 
 
 
 

64. The spur of Pinus roxburghii has :

 
 
 
 

65. The sporangium of fern contains nearly:

 
 
 
 

66. Helotism word is used for the symbiosis between :

 
 
 
 

67. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

71. Viroids have:

 
 
 
 

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

 
 
 
 

73. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

74. The word “sea weeds” is used for:

 
 
 
 

75. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

77. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. How a fern differs from a moss?

 
 
 
 

84. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

86. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

88. The lichens growing on rocks are called :

 
 
 
 

89. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

91. Reserve food in Euglena is:

 
 
 
 

92. Ovules are not found enclosed in ovary in :

 
 
 
 

93. The disease symptom necrosis refers to :

 
 
 
 

94. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

99. Red rot of sugarcane is caused by :

 
 
 
 

100. Ergot is obtained from :

 
 
 
 

101. Psilotum is:

 
 
 
 

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

 
 
 
 

103. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

105. The most important property of yeast is:

 
 
 
 

106. The ferns are usually found:

 
 
 
 

107. Lichens form the first community in

 
 
 
 

108. Coenogamete is found in:

 
 
 
 

109. Which causes red tide?

 
 
 
 

110. Club moss is the common name of :

 
 
 
 

111. Ulothrix produces :

 
 
 
 

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

 
 
 
 

113. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

115. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. LSD is:

 
 
 
 

121. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

123. Most of the algae are :

 
 
 
 

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

 
 
 
 

125. Ectocarpus produces:

 
 
 
 

126. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Virion refers to:

 
 
 
 

132. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

134. The leaves of Funaria are :

 
 
 
 

135. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. In Funaria :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Bacteria were first discovered by:

 
 
 
 

144. The alga, Spirogyra are found in :

 
 
 
 

145. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

147. In moss, peristomial teeth are:

 
 
 
 

148. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

150. The disease apple scab is caused by:

 
 
 
 

151. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

153. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

157. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

159. John Hutchinson divided dicots into two divisions:

 
 
 
 

160.

161. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

164. Who discovered heterothallism in fungi?

 
 
 
 

165. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

169. Which fixes atmospheric nitrogen?

 
 
 
 

170. 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:

 
 
 
 

171. Climbers are found in genus:

 
 
 
 

172. Fruits are not found in :

 
 
 
 

173. Infective part of virus was discovered by:

 
 
 
 

174. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

177. Black rust of wheat is caused by:

 
 
 
 

178. The tree fern is:

 
 
 
 

179. Yeast is a source of:

 
 
 
 

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

 
 
 
 

181. Diploxylic vascular bundles are found in:

 
 
 
 

182. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

187. Iodine is obtained from :

 
 
 
 

188. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

190. Lichens show :

 
 
 
 

191. Meristele of fern is:

 
 
 
 

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

 
 
 
 

193. Fern plants are:

 
 
 
 

194. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

196. Citrus canker is caused by:

 
 
 
 

197. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

199. Green plants are classified as :

 
 
 
 

200. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

202. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Heterocysts are found in :

 
 
 
 

206. The root nodules of leguminous plants contain:

 
 
 
 

207. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

209. Water bloom is generally caused by :

 
 
 
 

210. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

212. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

214. The sexual reproductive organs in Rhizopus are:

 
 
 
 

215. Pteridophyta are also called:

 
 
 
 

216. The prothallus of fern is:

 
 
 
 

217. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221.

222. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

224. The sporangia of Selaginella are attached:

 
 
 
 

225. Funaria are commonly found :

 
 
 
 

226. Which is not true for Escherichia coli?

 
 
 
 

227. The ascus of yeast contains:

 
 
 
 

228. Pollination in Pinus is :

 
 
 
 

229. In Pteris, the archegonia are present:

 
 
 
 

230. Protists which are diploid reproduce sexually by:

 
 
 
 

231. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

233. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

235. Seeds are characteristically found in:

 
 
 
 

236. In Pteris, the roots are:

 
 
 
 

237. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

244. Mucilaginous canals in Cycas are found in :

 
 
 
 

245. Isomorphic type alternation of generation is found in:

 
 
 
 

246. Gram stain is used to:

 
 
 
 

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

 
 
 
 

248. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Ovary is absent in:

 
 
 
 

252. Triple antigen injection or vaccine are for:

 
 
 
 

253. Nannandria are:

 
 
 
 

254. Who named prion?

 
 
 
 

255. Mycoplasma is different from bacteria due to:

 
 
 
 

256. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

257. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

259. In moss, calyptra is formed from:

 
 
 
 

260. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

263. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

265. In moss, sporophyte is formed on:

 
 
 
 

266. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

268. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. To which country Antony van Leeuwenhoek belong?

 
 
 
 

277. The chief characteristic of bryophyta is that :

 
 
 
 

278. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

281. 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:

 
 
 
 

282. Zoogametes are not found in:

 
 
 
 

283. Transfusion tissue is present in the leaflet of:

 
 
 
 

284. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

286. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

288. The genetic material of poxvirus is:

 
 
 
 

289. Who discovered cyanophages?

 
 
 
 

290. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

292. Some bacteria cannot be killed easily because of:

 
 
 
 

293. Indusium in Dryopteris is:

 
 
 
 

294. Green plants are classified as:

 
 
 
 

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

 
 
 
 

296. Protozoans are considered animals because these are:

 
 
 
 

297.

 

298. The roots of Cycas are :

 
 
 
 

299. Smallpox is caused by:

 
 
 
 

300. Longest known virus is:

 
 
 
 

301. Gymnosperms could also be called as:

 
 
 
 

302. Fern phloem lacks:

 
 
 
 

303. E coli is a:

 
 
 
 

304. Which of the following is a parasitic algae?

 
 
 
 

305. Special feature of pollen grains of Pinus is :

 
 
 
 

306. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

313. Pythium debaryanum is the causative agent of:

 
 
 
 

314. Wine turns sour because of:

 
 
 
 

315. Circular DNA is seen in:

 
 
 
 

316. Which of the following applies to Selaginella?

 
 
 
 

317. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Among the algae kelps are :

 
 
 
 

322. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

324. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

325. Leprosy is caused by:

 
 
 
 

326. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

328. Siphonogamy is found in:

 
 
 
 

329. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

333. Virus and bacteriophage are made-up of:

 
 
 
 

334. Azolla and Salvinia both are:

 
 
 
 

335. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

338. In Cycas:

 
 
 
 

339. In moss, reduction division occurs in :

 
 
 
 

340. 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?

 
 
 
 

341. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

344. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

346. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

348. The group algae possesses representatives belonging to kingdom:

 
 
 
 

349. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

352. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

354. In Cycas microsporangia are borne on:

 
 
 
 

355. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

357. Standard size of a herbarium sheet is:

 
 
 
 

358. Funaria can be differentiated from Cycas :

 
 
 
 

359. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

365. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

367. Roots are absent in :

 
 
 
 

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

 
 
 
 

369. All algae have:

 
 
 
 

370. The orders generally have the uniform endings:

 
 
 
 

371. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

373. Yeast grows more rapidly in:

 
 
 
 

374. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

376. Which of the following have algal zone?

 
 
 
 

377. Penicillin is obtained from:

 
 
 
 

378. Ethylene oxide is widely used to:

 
 
 
 

379. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

381. Rhizopus belongs to:

 
 
 
 

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

 
 
 
 

383. Which organisms are the oldest life forms?

 
 
 
 

384. 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?

 
 
 
 

385. First animal pathogenic virus was discovered by:

 
 
 
 

386. Which of the following lichens is harmful?

 
 
 
 

387. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

389. Selaginella differs from Moss in having:

 
 
 
 

390. Cleavage polyembryony is found in :

 
 
 
 

391. Water-net is the name of:

 
 
 
 

392. 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:

 
 
 
 

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

 
 
 
 

394. Endemic plants are characterised by their:

 
 
 
 

395. The chloroplast of Chlamydomonas are:

 
 
 
 

396. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

399. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

403. Spores of which plants have chloroplast:

 
 
 
 

404. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Fern prothallus produces:

 
 
 
 

410. Gametophyte is the main plant body in :

 
 
 
 

411. The leaf of Cycas shows:

 
 
 
 

412. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

414. Common phycobiont in a lichen is :

 
 
 
 

415. In moss, stomata are found:

 
 
 
 

416. Smut of maize is caused by :

 
 
 
 

417. Black rust of wheat is caused by:

 
 
 
 

418. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

420. Sexual reproduction in Rhizopus is by:

 
 
 
 

421. Majority of lichens are :

 
 
 
 

422. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

424. Embryophyta includes :

 
 
 
 

425. Placenta in fern is:

 
 
 
 

426. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

428. Synzoospore is produced in:

 
 
 
 

429. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

433. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

435. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

437. In Selaginella, the microsporangia are:

 
 
 
 

438. Chief constituents of bordeaux mixture are :

 
 
 
 

439. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

441. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

444. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

446. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

449. Meiosis in Ulothrix takes place:

 
 
 
 

450. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

452. Cocci types of bacteria are:

 
 
 
 

453. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

455. What are Cyanobacteria?

 
 
 
 

456. The truncated cone of HIV consists of:

 
 
 
 

457. All protozoans possess:

 
 
 
 

458. Saccharomyces ludwigii ascus produces:

 
 
 
 

459. Mycoplasma are sensitive to:

 
 
 
 

460. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

462. In Cycas the fertilization is:

 
 
 
 

463. In moss, sporogenous tissue arises from:

 
 
 
 

464. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

466. The term stele was given by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

469. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

471. Parmelia belongs to :

 
 
 
 

472. Detailed study of bacteriophage was made by:

 
 
 
 

473. The leaves of Funaria are :

 
 
 
 

474. Winged pollen grains are found in :

 
 
 
 

475. Pseudomycelium is found in:

 
 
 
 

476. Liverworts are included in :

 
 
 
 

477. The order generally ends with:

 
 
 
 

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

 
 
 
 

479. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

482. Which is an edible fungus?

 
 
 
 

483. NBG of Lucknow is now named as:

 
 
 
 

484. Diphtheria is caused by:

 
 
 
 

485. Fertility of the soil is increased by:

 
 
 
 

486. Fruits are not found in:

 
 
 
 

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

 
 
 
 

488. Protistan algae obtain their food as:

 
 
 
 

489. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. Iodine is obtained from:

 
 
 
 

493. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

495. Embryophyta includes:

 
 
 
 

496. Absorptive nutrition is:

 
 
 
 

497. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

498. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

500. Streptomycin is obtained from:

 
 
 
 

501. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

503. Most of the lichens are composed of :

 
 
 
 

504. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Asexual reproductive body of Volvox is called:

 
 
 
 

508. The chromosomal number in:

 
 
 
 

509. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

511. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Maximum diversity of life forms occurs in :

 
 
 
 

515. The lambda phase is a:

 
 
 
 

516. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

518. The seedless plants which possess vascular tissues are:

 
 
 
 

519. The fungi are usually:

 
 
 
 

520. Woody climbers are known as :

 
 
 
 

521. Viruses are commonly transmitted in plants through:

 
 
 
 

522. Economic importance of bacteria lies in their being:

 
 
 
 

523. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

525. Which among the following is a shrub?

 
 
 
 

526. Red rot of sugarcane is caused by:

 
 
 
 

527. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

530. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

533. The flagella of Chlamydomonas are:

 
 
 
 

534. Most primitive embryophytes are placed in :

 
 
 
 

535. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. Fruiting body of lichens is :

 
 
 
 

539. Oswald Tippo’s classification was based on :

 
 
 
 

540. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

542. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

543. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

545. The mycelium of Rhizopus is:

 
 
 
 

546. Reproduction in Rhizopus is:

 
 
 
 

547. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

549. Ovary is absent in :

 
 
 
 

550. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

555. 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:

 
 
 
 

556. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. Heterospory is the production of:

 
 
 
 

562. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

569. The smallest bacterium is:

 
 
 
 

570. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

575. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

577. Quarantine regulations are concerned with:

 
 
 
 

578. Halophiles are the bacteria that require for growth:

 
 
 
 

579. The antibiotic is obtained from:

 
 
 
 

580. The upper region of moss capsule is :

 
 
 
 

581. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

584. Which is not found in bacteria?

 
 
 
 

585. Pythium debaryanum is the causative agent of:

 
 
 
 

586. The fungi are mostly:

 
 
 
 

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

 
 
 
 

588. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

591. The Rhizopus is:

 
 
 
 

592. Bacteria differ from viruses in being sensitive to:

 
 
 
 

593. The largest alga is:

 
 
 
 

594. Which one of the following is a monocot?

 
 
 
 

595. The gametophyte of moss has distinct phases :

 
 
 
 

596. Antibiotic has been extracted from :

 
 
 
 

597. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

599. Which of the following is true for viruses?

 
 
 
 

600. Mostly type of zygospore in Ulothrix is:

 
 
 
 

601. Mixed cropping helps :

 
 
 
 

602. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. Which class of Protozoa includes all parasitic forms?

 
 
 
 

606. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

608. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

611. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

612. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

614. Winged seeds are found in :

 
 
 
 

615. What is the role of nitrifying bacteria?

 
 
 
 

616. Pasteurization of milk involves heating for:

 
 
 
 

617. Lichens reproduce by :

 
 
 
 

618. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

620. The gametophyte of fern is as:

 
 
 
 

621. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

623. Late blight of potato is caused by:

 
 
 
 

624. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

626. The smallest unit of classification is:

 
 
 
 

627. How is moss different from fern?

 
 
 
 

628. Typhoid in man is caused by:

 
 
 
 

629. Which have the largest antherozoid?

 
 
 
 

630. Which is a gametophytic tissue?

 
 
 
 

631. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

633. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

635. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

637. Vascular tissue is found in :

 
 
 
 

638. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

640. Which is a redwood tree?

 
 
 
 

641. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

649. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

654. Embryo formation is not known in :

 
 
 
 

655. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

662. Which is the correct statement about Selaginella?

 
 
 
 

663. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

665. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. What is streptomycin?

 
 
 
 

669. Funaria is :

 
 
 
 

670. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. Pinus is:

 
 
 
 

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

 
 
 
 

675. Lichens are the indicator of pollution :

 
 
 
 

676. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

678. Downy mildew disease is caused by :

 
 
 
 

679. Mycoplasma are:

 
 
 
 

680. A gill of Agaricus:

 
 
 
 

681. 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?

 
 
 
 

682. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

684. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

686. The mode of nutrition of bacteria is usually:

 
 
 
 

687. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

690. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

691. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

693. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

695. Some diseases caused by bacteria are:

 
 
 
 

696. Milk is converted to curd by:

 
 
 
 

697. Which of the following statements is not correct?

 
 
 
 

698. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

700. Interferon is a:

 
 
 
 

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

 
 
 
 

702. In Cycas which structure is equivalent to stamen?

 
 
 
 

703. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

707. The spermatozoids of Cycas are :

 
 
 
 

708. Spirogyra represents the :

 
 
 
 

709. Clostridium can:

 
 
 
 

710. Pollination drop is:

 
 
 
 

711. Chemosynthetic bacteria are:

 
 
 
 

712. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

713. Enzymes are absent in:

 
 
 
 

714. Ergot of rye is caused by:

 
 
 
 

715. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

717. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Fern prothallus is:

 
 
 
 

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

 
 
 
 

722. Multicellular and jacketed sex organs are found in :

 
 
 
 

723. The nucleus of bacteria is:

 
 
 
 

724. Little leaf disease of Brinjal is caused by:

 
 
 
 

725. Cellular slime mold is:

 
 
 
 

726. Disease resistant plant varieties can be produced by :

 
 
 
 

727. Oswald Tippo’s classification is:

 
 
 
 

728. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

731. The sporophyte of Riccia is :

 
 
 
 

732. Antibiotics cure the disease by:

 
 
 
 

733. Bacteriophages have been used as:

 
 
 
 

734. The chief characteristic of class Ascomycetes is:

 
 
 
 

735. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

737. The coralloid roots are :

 
 
 
 

738. Saccharomyces is well known for:

 
 
 
 

739. Metulae are found in:

 
 
 
 

740. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

742. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

744. Cycas is:

 
 
 
 

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

 
 
 
 

746. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

748. The teeth of peristome of Funaria are :

 
 
 
 

749. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

751. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

753. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

755. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

757. In Funaria, calyptra is derived from :

 
 
 
 

758. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

761. The male gametes of Pinus are :

 
 
 
 

762. Reproduction in Cycas takes place by :

 
 
 
 

763. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

765. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. The gametophyte of fern bears:

 
 
 
 

772. The fungi used as food are:

 
 
 
 

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

 
 
 
 

774. The megasporangium of Selaginella is:

 
 
 
 

775. Which of the following is a monocot?

 
 
 
 

776. In Herpes virus DNA is:

 
 
 
 

777. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

779. 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:

 
 
 
 

780. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

782. Most primitive group of vascular plants are:

 
 
 
 

783. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

786. In binomial system most of the words are:

 
 
 
 

787. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

789. Acetobacter is useful in:

 
 
 
 

790. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

792. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. The similarity between cyanobacteria and bacteria:

 
 
 
 

800. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

804. 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:

 
 
 
 

805. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

807. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

809. Select the wrong statement:

 
 
 
 

810.

811. Discovery of penicillin was based on:

 
 
 
 

812. Azolla growing in paddy fields helps in:

 
 
 
 

813. Which one of the following statement is wrong?

 
 
 
 

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

 
 
 
 

815. Spermatophyta are characterized by producing:

 
 
 
 

816. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

818. Anoxygenic photosynthesis occurs in:

 
 
 
 

819. Spirogyra differs from moss protonema in having :

 
 
 
 

820. Photosynthetic bacteria have:

 
 
 
 

821. Some biologists have used the term Mycetozoa for:

 
 
 
 

822. Aflatoxin is produced by:

 
 
 
 

823. Lichens are indicators of :

 
 
 
 

824. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

827. Cell walls of Gram-positive bacteria contain:

 
 
 
 

828. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

831. Cycas plant in appearance resembles :

 
 
 
 

832. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

833. The leafy fern plant represents the:

 
 
 
 

834. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

836. Late blight of potato is caused by :

 
 
 
 

837. Cryptogams include :

 
 
 
 

838. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

842. TMV was isolated in crystalline form by:

 
 
 
 

843. Agar-agar is obtained from:

 
 
 
 

844. Lichen show :

 
 
 
 

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

 
 
 
 

846. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

851. Streptomyces falls under:

 
 
 
 

852. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

854. Nitrogen-fixing bacteria may be located:

 
 
 
 

855. Mycoplasmas are not viruses in nature because:

 
 
 
 

856. Bivalved siliceous shell or frustule occur in:

 
 
 
 

857. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

858. Early blight of potato is caused by:

 
 
 
 

859. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

863. Methanogens belong to:

 
 
 
 

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