Quiz_Random

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

 
 
 
 

2. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. What are Cyanobacteria?

 
 
 
 

7. Mycoplasma contains:

 
 
 
 

8. Rhizopus and yeast are usually:

 
 
 
 

9. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

11. In moss, conducting tissue is made up of

 
 
 
 

12. Ovary is absent in:

 
 
 
 

13. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

15. The chief characteristic of class Ascomycetes is:

 
 
 
 

16. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

18. 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:

 
 
 
 

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

 
 
 
 

20. Economic importance of bacteria lies in their being:

 
 
 
 

21. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. In Cycas the fertilization is:

 
 
 
 

25. Embryo formation is not known in :

 
 
 
 

26. Spermatophyta are characterized by producing:

 
 
 
 

27. The order generally ends with:

 
 
 
 

28. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

30. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

31. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

43. The young leaves of Cycas have :

 
 
 
 

44. Which fixes atmospheric nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Bryophyta have been placed in cryptogams because:

 
 
 
 

48. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Funaria is :

 
 
 
 

53. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

55. The ascus of yeast contains:

 
 
 
 

56. Chemosynthetic bacteria are:

 
 
 
 

57. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

58. NBG of Lucknow is now named as:

 
 
 
 

59. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

61. Which one of the following is a monocot?

 
 
 
 

62. The most primitive vascular plants is:

 
 
 
 

63. Spirogyra differs from moss protonema in having :

 
 
 
 

64. The fungi are usually:

 
 
 
 

65. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

67. Desired type of Cycas can be grown by:

 
 
 
 

68. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Spirogyra represents the :

 
 
 
 

73. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

75. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Select the wrong statement:

 
 
 
 

79. In Gymnosperms endosperm is a:

 
 
 
 

80. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. In Selaginella, the microsporangia are:

 
 
 
 

84. Pollination drop is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

96. Embryophyta includes:

 
 
 
 

97. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Funaria is a Bryophyta because :

 
 
 
 

101. Which condition is found in Cycas?

 
 
 
 

102. Maximum diversity of life forms occurs in :

 
 
 
 

103. Longest known virus is:

 
 
 
 

104. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Vascular tissue is found in :

 
 
 
 

108. The lambda phase is a:

 
 
 
 

109. The disease apple scab is caused by:

 
 
 
 

110. Detailed study of bacteriophage was made by:

 
 
 
 

111. Disease resistant plant varieties can be produced by :

 
 
 
 

112. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

115. The sporangia of Selaginella are attached:

 
 
 
 

116. Select the wrong statement:

 
 
 
 

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

 
 
 
 

118. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

120. In a diplontic life cycle:

 
 
 
 

121. The archegonia in Selaginella develop on:

 
 
 
 

122. Saccharomyces ludwigii ascus produces:

 
 
 
 

123. Ectocarpus produces:

 
 
 
 

124. Antibiotic has been extracted from :

 
 
 
 

125. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

127. One of the distinctive feature of Spirogyra is :

 
 
 
 

128. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

130. Ovules are not found enclosed in ovary in :

 
 
 
 

131. In tracheophyta:

 
 
 
 

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

 
 
 
 

133. The photosynthetic protists are:

 
 
 
 

134. The chromosomal number in:

 
 
 
 

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

 
 
 
 

136. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

138. Which of the following statement is correct?

 
 
 
 

139. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

141. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

143. What are plasmids?

 
 
 
 

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

 
 
 
 

145. What is streptomycin?

 
 
 
 

146. Ergot of rye is caused by:

 
 
 
 

147. The antherozoids of Funaria are :

 
 
 
 

148. Leaf spot of groundnut is caused by :

 
 
 
 

149. Cycas is :

 
 
 
 

150. In moss, reduction division occurs in :

 
 
 
 

151. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Iodine is obtained from:

 
 
 
 

155. Soil fertility is lost by the activities of:

 
 
 
 

156. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

158. Bacteria which are spherical are called:

 
 
 
 

159. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

161. Pseudomycelium is found in:

 
 
 
 

162. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

165. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

168. Most of the lichens are composed of :

 
 
 
 

169. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

170. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

172. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

174. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

178. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

180. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

186. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

188. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

189. Facultative saprophyte is:

 
 
 
 

190. Downy mildew disease is caused by :

 
 
 
 

191. Heterospory is the production of:

 
 
 
 

192. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

194. Genetic material of TMV is:

 
 
 
 

195. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

197. The gametophyte of fern bears:

 
 
 
 

198. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

205. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

207. Meiosis in Ulothrix takes place:

 
 
 
 

208. Broad spectrum antibiotic is, which:

 
 
 
 

209. The similarity between cyanobacteria and bacteria:

 
 
 
 

210. Who discovered cyanophages?

 
 
 
 

211. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. In Funaria :

 
 
 
 

217. Fruiting body of lichens is :

 
 
 
 

218. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

221. Red rot of sugarcane is caused by :

 
 
 
 

222. Cryptogams include :

 
 
 
 

223. Rhizopus belongs to:

 
 
 
 

224. Mixed cropping helps :

 
 
 
 

225. Botulinum toxin effects:

 
 
 
 

226. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

231. Reserve food in Euglena is:

 
 
 
 

232. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

236. Virion refers to:

 
 
 
 

237. Little leaf disease of Brinjal is caused by:

 
 
 
 

238. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

240. Most resistant spore in bacteria is:

 
 
 
 

241. Azolla growing in paddy fields helps in:

 
 
 
 

242. In Cycas:

 
 
 
 

243. Etiology includes the study of :

 
 
 
 

244. 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?

 
 
 
 

245. Nannandria are:

 
 
 
 

246. The plants of Funaria grow :

 
 
 
 

247. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

249. Black rust of wheat is caused by:

 
 
 
 

250. The leaves of Funaria are :

 
 
 
 

251. Most common type of conjugation in Spirogyra is :

 
 
 
 

252. In Pteris, the archegonia are present:

 
 
 
 

253. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

256. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

259. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

261. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Rhizophore of Selaginella is:

 
 
 
 

266. Green plants are classified as:

 
 
 
 

267. Photoautotrophic bacteria have:

 
 
 
 

268. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

271. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

280. In Gymnocarpeae the fruiting body is :

 
 
 
 

281. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

283. Which of the following are included in Tracheophyta?

 
 
 
 

284. Rhizoids of Riccia are :

 
 
 
 

285. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

288. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

290. Bacteria growing on synthetic medium are called:

 
 
 
 

291. The most important property of yeast is:

 
 
 
 

292. The Rhizopus gametes are formed in:

 
 
 
 

293. The fungi that grow on wood are called:

 
 
 
 

294. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

298. First animal pathogenic virus was discovered by:

 
 
 
 

299. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

302. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

304. The leafy fern plant represents the:

 
 
 
 

305. Black rust of wheat is caused by:

 
 
 
 

306. Viruses are considered to be:

 
 
 
 

307. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

309. The male gametes of Pinus are :

 
 
 
 

310. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

312. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Vegetative reproduction in Cycas is by means of :

 
 
 
 

318. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. A gill of Agaricus:

 
 
 
 

322. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

324. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

326. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

328. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

330. Heterocysts are found in :

 
 
 
 

331. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

333. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

335. Kuru, a human disease is caused by:

 
 
 
 

336. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

338. The fern plant is:

 
 
 
 

339. Psilotum is:

 
 
 
 

340. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

345. Which among the following is a shrub?

 
 
 
 

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

 
 
 
 

347. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

350. Fern plants are:

 
 
 
 

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

 
 
 
 

352. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

354. Yeast grows more rapidly in:

 
 
 
 

355. Fern prothallus is:

 
 
 
 

356. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

357. Sexual reproduction in Rhizopus is by:

 
 
 
 

358. Which is not true for Escherichia coli?

 
 
 
 

359. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Protists which are diploid reproduce sexually by:

 
 
 
 

365. The DNA of E coli is:

 
 
 
 

366. Zoogametes are not found in:

 
 
 
 

367. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

369. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

370. To which country Antony van Leeuwenhoek belong?

 
 
 
 

371. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

377. The chief characteristic of bryophyta is that :

 
 
 
 

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

 
 
 
 

379. Milk is converted to curd by:

 
 
 
 

380. Protozoans are considered animals because these are:

 
 
 
 

381. Which of the following does not contain chlorophyll?

 
 
 
 

382. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

384. Interferon is a:

 
 
 
 

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

 
 
 
 

386. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

388. LSD is:

 
 
 
 

389. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

391. What is the role of nitrifying bacteria?

 
 
 
 

392. Red rot of sugarcane is caused by :

 
 
 
 

393. Which is absent from the xylem of Cycas?

 
 
 
 

394. Which of the following have algal zone?

 
 
 
 

395.

396. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

401. Funaria are commonly found :

 
 
 
 

402. Wine turns sour because of:

 
 
 
 

403. Most primitive embryophytes are placed in:

 
 
 
 

404. Spores of which plants have chloroplast:

 
 
 
 

405. Indusium in Dryopteris is:

 
 
 
 

406. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

413. Mucilaginous canals in Cycas are found in :

 
 
 
 

414. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

416. Which is a tautonym?

 
 
 
 

417. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

420. Gram stain is used to:

 
 
 
 

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

 
 
 
 

422. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

427. Gymnosperms could also be called as:

 
 
 
 

428. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

430. Lichen show :

 
 
 
 

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

 
 
 
 

432. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

436. Most of the algae are :

 
 
 
 

437. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

439. Which of the following is true for Selaginella?

 
 
 
 

440. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

443.

444. Ovules are not found enclosed in ovary in :

 
 
 
 

445. Generic name of mango is:

 
 
 
 

446. Common phycobiont in a lichen is :

 
 
 
 

447. Proembryo in Pinus is :

 
 
 
 

448. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

450. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

451. What is mycorrhiza?

 
 
 
 

452. Multicellular and jacketed sex organs are found in :

 
 
 
 

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

 
 
 
 

454. Pythium debaryanum is the causative agent of:

 
 
 
 

455. Viruses are commonly transmitted in plants through:

 
 
 
 

456. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

458. True sexuality is not found in:

 
 
 
 

459. Enteric bacteria are those bacteria that live:

 
 
 
 

460. To which class Riccia belongs :

 
 
 
 

461. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

463. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Redness of red sea is due to :

 
 
 
 

467. The source of litmus is :

 
 
 
 

468. Ginkgo biloba is a:

 
 
 
 

469. Ulothrix produces :

 
 
 
 

470. TMV was isolated in crystalline form by:

 
 
 
 

471. What is special feature of fern archegonia?

 
 
 
 

472. Usually, bacteria reproduce by:

 
 
 
 

473. The prothallus of fern represents the plant:

 
 
 
 

474. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Fruits are not found in :

 
 
 
 

478. Roots are absent in :

 
 
 
 

479. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

481. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

483. Majority of lichens are :

 
 
 
 

484. 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:

 
 
 
 

485. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

487. The microsporophylls on the cone of Cycas are :

 
 
 
 

488. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

490. Which have the largest antherozoid?

 
 
 
 

491. The truncated cone of HIV consists of:

 
 
 
 

492. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

495. Which of the following is true for viruses?

 
 
 
 

496. 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:

 
 
 
 

497. Pinus is:

 
 
 
 

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

 
 
 
 

499. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

500. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

504. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Which part of Riccia bears nurse cells?

 
 
 
 

508. The orders generally have the uniform endings:

 
 
 
 

509. Aflatoxin is produced as a product in :

 
 
 
 

510. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

512. The mode of nutrition of bacteria is usually:

 
 
 
 

513. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

515. Anoxygenic photosynthesis occurs in:

 
 
 
 

516. The central part of Funaria axis is :

 
 
 
 

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

 
 
 
 

518. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

520. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

522. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

524. Why is Cycas called a living fossil?

 
 
 
 

525. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

527. Linnaeus is credited with introducing:

 
 
 
 

528. Which lichen is called Reindeer moss?

 
 
 
 

529. The group algae possesses representatives belonging to kingdom:

 
 
 
 

530. Bacteriophages have been used as:

 
 
 
 

531. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

534. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

536. Winged seeds are found in :

 
 
 
 

537. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

540. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

543. Male gametophyte of Selaginella is found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

546. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

549. Which of the following statements is not correct?

 
 
 
 

550. Absorptive nutrition is:

 
 
 
 

551. The first to isolate a plant virus was:

 
 
 
 

552. Late blight of potato is caused by :

 
 
 
 

553. The Rhizopus is:

 
 
 
 

554. Green plants are classified as :

 
 
 
 

555. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

557. In Cycas which structure is equivalent to stamen?

 
 
 
 

558. Which bacteria convert nitrate into nitrogen?

 
 
 
 

559. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

562. Fern phloem lacks:

 
 
 
 

563. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

571. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

573. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

578. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

580. 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?

 
 
 
 

581. In Pteris, the roots are:

 
 
 
 

582. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

584. The antibiotic is obtained from:

 
 
 
 

585. Which is a fungicide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

588. Some bacteria cannot be killed easily because of:

 
 
 
 

589. Select the correct statement: (NEET 2016)

 
 
 
 

590. Which is not found in bacteria?

 
 
 
 

591. Pasteurized milk is:

 
 
 
 

592. Sporophyte of Funaria is :

 
 
 
 

593. Early blight of potato is caused by:

 
 
 
 

594. 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:

 
 
 
 

595. The sexual reproductive organs in Rhizopus are:

 
 
 
 

596. Saccharomyces is well known for:

 
 
 
 

597. Penicillin was discovered by:

 
 
 
 

598. Coenogamete is found in:

 
 
 
 

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

 
 
 
 

600. Pollination in Cycas takes place by :

 
 
 
 

601. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

604. The tree fern is:

 
 
 
 

605. Discovery of penicillin was based on:

 
 
 
 

606. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

610. Vascular cryptogam is the term used for :

 
 
 
 

611. Mycoplasma are sensitive to:

 
 
 
 

612. Which of the following have a prokaryotic cell?

 
 
 
 

613. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

615. The spermatozoids of Cycas are :

 
 
 
 

616. The ferns are usually found:

 
 
 
 

617. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

619. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

621. Number of capsomeres forming capsid of TMV is:

 
 
 
 

622. Water bloom is generally caused by :

 
 
 
 

623. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

625. Which statement is wrong in regard to bacteria?

 
 
 
 

626. Which is an edible fungus?

 
 
 
 

627. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

632. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

635. Standard size of a herbarium sheet is:

 
 
 
 

636. Oswald Tippo’s classification was based on :

 
 
 
 

637. Aflatoxin is produced by:

 
 
 
 

638. Selaginella differs from Moss in having:

 
 
 
 

639. The teeth of peristome of Funaria are :

 
 
 
 

640. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

642. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

644. Late blight of potato is caused by:

 
 
 
 

645. The megaspore of Selaginella on germination produces:

 
 
 
 

646. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

648. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

649. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. Water-net is the name of:

 
 
 
 

653. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

654. 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:

 
 
 
 

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

 
 
 
 

656. The prothallus of fern is:

 
 
 
 

657. 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?

 
 
 
 

658. Cycas is:

 
 
 
 

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

 
 
 
 

660. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

663. Metulae are found in:

 
 
 
 

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

 
 
 
 

665. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

668. The largest alga is:

 
 
 
 

669. The term stele was given by:

 
 
 
 

670. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

672. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

674. Bentham and Hooker placed gymnosperms:

 
 
 
 

675. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

677. Who named prion?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

680. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

683. The zygospore in Rhizopus on germination forms:

 
 
 
 

684. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

686. Fairy ring is the name given to:

 
 
 
 

687. Viruses have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

698. The genetic material of poxvirus is:

 
 
 
 

699. Facultative parasite is:

 
 
 
 

700.

701. Cellular slime mold is:

 
 
 
 

702. The seedless plants which possess vascular tissues are:

 
 
 
 

703. Water-borne bacterial diseases are:

 
 
 
 

704. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

705. Ethylene oxide is widely used to:

 
 
 
 

706. Pinus microsporophyll bears:

 
 
 
 

707. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

710. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

713. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

715. Bacteria are considered to be plants because they:

 
 
 
 

716. The gametophyte of fern is as:

 
 
 
 

717. The spur of Pinus roxburghii has :

 
 
 
 

718. The development of Selaginella embryo is:

 
 
 
 

719. The tallest moss in the world is :

 
 
 
 

720. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

724. The upper region of moss capsule is :

 
 
 
 

725. Winged pollen grains are found in :

 
 
 
 

726. Spermatophyta are characterized by producing:

 
 
 
 

727. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

730. The coralloid roots are :

 
 
 
 

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

 
 
 
 

732. Clostridium can:

 
 
 
 

733. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

735. Bacteriophage consists of:

 
 
 
 

736. Lichens are ecologically important because :

 
 
 
 

737. Streptomyces falls under:

 
 
 
 

738. Acellular slime mold is/are:

 
 
 
 

739. Cycas plant in appearance resembles :

 
 
 
 

740. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

743. Seeds are characteristically found in:

 
 
 
 

744. Nitrogen-fixing bacteria may be located:

 
 
 
 

745. Botulism is a:

 
 
 
 

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

 
 
 
 

747. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

748. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

750. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

752. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

755. In angiosperms double fertilization represents:

 
 
 
 

756. The fungi used as food are:

 
 
 
 

757. Sexual reproduction of lichen is due to :

 
 
 
 

758. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

760. In moss, peristomial teeth are:

 
 
 
 

761. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

765. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

767. The megasporangium of Selaginella is:

 
 
 
 

768. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Methanogens belong to:

 
 
 
 

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

 
 
 
 

773. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

774. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

775. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

777. The two conjugating gametangia of Rhizopus are:

 
 
 
 

778. Red rot of sugarcane is caused by:

 
 
 
 

779. Which one of the following statement is wrong?

 
 
 
 

780. The leaf of Cycas shows:

 
 
 
 

781. 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:

 
 
 
 

782. Reproduction in Rhizopus is:

 
 
 
 

783. Which of the following is a heterosporous pteridophyte?

 
 
 
 

784. Who discovered streptomycin?

 
 
 
 

785. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

787. Lichens are indicators of :

 
 
 
 

788. Meristele of fern is:

 
 
 
 

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

 
 
 
 

790. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

792. Heterosporous pteridophytes always form:

 
 
 
 

793. The root nodules of leguminous plants contain:

 
 
 
 

794. The sori in Dryopteris are found on:

 
 
 
 

795. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

796. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

799. Lichens reproduce by :

 
 
 
 

800. The flagella of Chlamydomonas are:

 
 
 
 

801. The fungi are mostly:

 
 
 
 

802. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

804. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

807. Sporophyte of fern is:

 
 
 
 

808. 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?

 
 
 
 

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

 
 
 
 

810. Ergot is obtained from :

 
 
 
 

811. Which causes red tide?

 
 
 
 

812. The vascular bundles of Cycas stem are :

 
 
 
 

813. Liverworts are included in :

 
 
 
 

814. Some biologists have used the term Mycetozoa for:

 
 
 
 

815. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820.

 

821. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

823. How is moss different from fern?

 
 
 
 

824. Which is a redwood tree?

 
 
 
 

825. The disease symptom necrosis refers to :

 
 
 
 

826. Heterospory and ligulate leaves are a feature of:

 
 
 
 

827. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

829. Lichens form the first community in

 
 
 
 

830. The mycelium of Rhizopus is:

 
 
 
 

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

 
 
 
 

832. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

836. The sporophyte of Riccia is :

 
 
 
 

837. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

843. Which of the following lichens is harmful?

 
 
 
 

844. In Funaria, calyptra is derived from :

 
 
 
 

845. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

847. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

849. Lichens show :

 
 
 
 

850. Sometimes the bacterial cell is enclosed in:

 
 
 
 

851. Cyanophage is a virus that attacks:

 
 
 
 

852. Virus and bacteriophage are made-up of:

 
 
 
 

853. What is a vector?

 
 
 
 

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

 
 
 
 

855. Funaria can be differentiated from Cycas :

 
 
 
 

856. Halophiles are the bacteria that require for growth:

 
 
 
 

857. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

859. Citrus canker is caused by :

 
 
 
 

860. Which is the nuclear material in bacteria?

 
 
 
 

861. All archaebacteria lack:

 
 
 
 

862. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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