Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. 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?

 
 
 
 

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

 
 
 
 

6. Most primitive kind of flower is represented by:

 
 
 
 

7. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

12. Black rust of wheat is caused by:

 
 
 
 

13. Lichens show :

 
 
 
 

14. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

16. Azolla growing in paddy fields helps in:

 
 
 
 

17. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Lichen show :

 
 
 
 

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

 
 
 
 

23. Cycas plant in appearance resembles :

 
 
 
 

24. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Enteric bacteria are those bacteria that live:

 
 
 
 

30. In tracheophyta:

 
 
 
 

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

 
 
 
 

32. Reproduction in Rhizopus is:

 
 
 
 

33. The role of meiosis is for:

 
 
 
 

34. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

36. Mycoplasma are:

 
 
 
 

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

 
 
 
 

38. Antibiotics cure the disease by:

 
 
 
 

39. Genetic material of TMV is:

 
 
 
 

40. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

41. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. NBG of Lucknow is now named as:

 
 
 
 

45. The mycelium of Rhizopus is:

 
 
 
 

46. Heterotrichous habit means :

 
 
 
 

47. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Lichens are ecologically important because :

 
 
 
 

52. What is streptomycin?

 
 
 
 

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

 
 
 
 

54. The Rhizopus gametes are formed in:

 
 
 
 

55. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Funaria is :

 
 
 
 

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

 
 
 
 

63. Late blight of potato is caused by :

 
 
 
 

64. Ovary is absent in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

70. The sporangiophores in Rhizopus are:

 
 
 
 

71. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

73. The sori in Dryopteris are found on:

 
 
 
 

74. Which have the largest antherozoid?

 
 
 
 

75. Pollination in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

81. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Polystelic condition is found in:

 
 
 
 

86. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

92. The fungi are mostly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. Where does meiosis occur in yeast?

 
 
 
 

97. The Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Gram stain is used to:

 
 
 
 

101. Which of the following is sago palm?

 
 
 
 

102. Antibiotic has been extracted from :

 
 
 
 

103. Halophiles are the bacteria that require for growth:

 
 
 
 

104. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Which is an edible fungus?

 
 
 
 

108. Fern plants are:

 
 
 
 

109. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

111. Botulinum toxin effects:

 
 
 
 

112. The central part of Funaria axis is :

 
 
 
 

113. Bryophyta have been placed in cryptogams because:

 
 
 
 

114. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

115. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Which of the following is a parasitic algae?

 
 
 
 

119. Nannandria are:

 
 
 
 

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

 
 
 
 

121. The gametophyte of fern bears:

 
 
 
 

122. Psilotum is:

 
 
 
 

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

 
 
 
 

124. All algae have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

131. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

133. The largest alga is:

 
 
 
 

134. The first to isolate a plant virus was:

 
 
 
 

135. How is moss different from fern?

 
 
 
 

136. The leaves of Funaria are :

 
 
 
 

137. The zygospore in Rhizopus on germination forms:

 
 
 
 

138. Special feature of pollen grains of Pinus is :

 
 
 
 

139. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

141. Nitrogen-fixing bacteria may be located:

 
 
 
 

142. Chief constituents of bordeaux mixture are :

 
 
 
 

143. The chief characteristic of class Ascomycetes is:

 
 
 
 

144. Linnaeus is credited with introducing:

 
 
 
 

145. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. Cell walls of Gram-positive bacteria contain:

 
 
 
 

149. Diphtheria is caused by:

 
 
 
 

150. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Some bacteria cannot be killed easily because of:

 
 
 
 

154. Small epidermal swellings due to infection are called :

 
 
 
 

155. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

157. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

160. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

162. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

163. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

167. Mucilaginous canals in Cycas are found in :

 
 
 
 

168. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

170. Protistan algae obtain their food as:

 
 
 
 

171.

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

 
 
 
 

173. Azolla and Salvinia both are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

176. The prothallus of fern represents the plant:

 
 
 
 

177. Yeast grows more rapidly in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

181. The mode of nutrition of bacteria is usually:

 
 
 
 

182. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

184. Iodine is obtained from:

 
 
 
 

185. Sexual reproduction in Rhizopus is by:

 
 
 
 

186. Facultative parasite is:

 
 
 
 

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

 
 
 
 

188. Anoxygenic photosynthesis occurs in:

 
 
 
 

189. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

191. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

192. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

195. Which group of algae have an incipient nucleus?

 
 
 
 

196. Ovules are not found enclosed in ovary in :

 
 
 
 

197. Longest known virus is:

 
 
 
 

198. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

201. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

203. In Pteris, the roots are:

 
 
 
 

204. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

207. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

209. Which lichen is called Reindeer moss?

 
 
 
 

210. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

217. Viruses are considered to be:

 
 
 
 

218. 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?

 
 
 
 

219. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

221. How a fern differs from a moss?

 
 
 
 

222. The young leaves of Cycas have :

 
 
 
 

223. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

225. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

227. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. Streptomyces falls under:

 
 
 
 

231. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

237. 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:

 
 
 
 

238. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

240. Pasteur is famous for his:

 
 
 
 

241. Which one of the following statement is wrong?

 
 
 
 

242. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

244. Most of the lichens are composed of :

 
 
 
 

245. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

247. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

250. Most primitive embryophytes are placed in :

 
 
 
 

251. Yeast is a source of:

 
 
 
 

252. In moss, calyptra is formed from:

 
 
 
 

253. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

257. Little leaf disease of Brinjal is caused by:

 
 
 
 

258. 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:

 
 
 
 

259. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

261. In binomial system most of the words are:

 
 
 
 

262. Fruits are not found in :

 
 
 
 

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

 
 
 
 

264. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

268. An Hfr bacterium is one that contains:

 
 
 
 

269. Lichens form the first community in

 
 
 
 

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

 
 
 
 

271. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. In Selaginella, the microsporangia are:

 
 
 
 

275. Siphonogamy is found in:

 
 
 
 

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

 
 
 
 

277. Select the correct statement: (NEET 2016)

 
 
 
 

278. In Cycas microsporangia are borne on:

 
 
 
 

279. Fern prothallus produces:

 
 
 
 

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

 
 
 
 

281. The tree fern is:

 
 
 
 

282. Fairy ring is the name given to:

 
 
 
 

283. The flagella of Chlamydomonas are:

 
 
 
 

284. Which is absent from the xylem of Cycas?

 
 
 
 

285. The phloem of vascular system of Cycas is :

 
 
 
 

286. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

288. Most primitive embryophytes are placed in:

 
 
 
 

289. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

291. The development of Selaginella embryo is:

 
 
 
 

292. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

297. The megasporangium of Selaginella is:

 
 
 
 

298. Cycas revoluta is widely grown as :

 
 
 
 

299. Which is a gametophytic tissue?

 
 
 
 

300. Oswald Tippo’s classification is:

 
 
 
 

301. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

302. Early blight of potato is caused by:

 
 
 
 

303. The development of sporangium in Selaginella is:

 
 
 
 

304. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Fruits are not found in Cycas because:

 
 
 
 

309. In Cycas the fertilization is:

 
 
 
 

310. Pinus is:

 
 
 
 

311. Meiosis in Ulothrix takes place:

 
 
 
 

312. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

313. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

316. The similarity between cyanobacteria and bacteria:

 
 
 
 

317. The chromosomal number in:

 
 
 
 

318. Which is a fungicide?

 
 
 
 

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

 
 
 
 

320. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

321. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

324. Most of the algae are :

 
 
 
 

325. Pythium debaryanum is the causative agent of:

 
 
 
 

326. Virion refers to:

 
 
 
 

327. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

329. Male gametophyte of Selaginella is found:

 
 
 
 

330. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

332. Which of the following statement is correct?

 
 
 
 

333. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

335. The chloroplast in Ulothrix is :

 
 
 
 

336. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

338. In Funaria :

 
 
 
 

339. Fruiting body of lichens is :

 
 
 
 

340. Gametophyte is the main plant body in :

 
 
 
 

341. Pythium debaryanum is the causative agent of:

 
 
 
 

342. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

344. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

345. Who discovered cyanophages?

 
 
 
 

346. The spur of Pinus roxburghii has :

 
 
 
 

347. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

349. Bacteriophages have been used as:

 
 
 
 

350. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

352. The leafy fern plant represents the:

 
 
 
 

353. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

356. . Tapetum develops in:

 
 
 
 

357. The middle sterile part of capsule is called:

 
 
 
 

358. Funaria is :

 
 
 
 

359. Mostly type of zygospore in Ulothrix is:

 
 
 
 

360. Facultative saprophyte is:

 
 
 
 

361. Helotism word is used for the symbiosis between :

 
 
 
 

362. The DNA of E coli is:

 
 
 
 

363. The disease apple scab is caused by:

 
 
 
 

364. Nitrifying bacteria play an important role by converting:

 
 
 
 

365. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

367. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

369. In a bacteriophage, DNA is present in:

 
 
 
 

370. 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:

 
 
 
 

371. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

377. Which fixes atmospheric nitrogen?

 
 
 
 

378. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

380. Pneumonia is caused by:

 
 
 
 

381. In Gymnocarpeae the fruiting body is :

 
 
 
 

382. Which among the following is a shrub?

 
 
 
 

383. Ovary is absent in:

 
 
 
 

384. Bacteria which are spherical are called:

 
 
 
 

385. Endemic plants are characterised by their:

 
 
 
 

386. In moss, conducting tissue is made up of

 
 
 
 

387. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

390. The gametophyte produced by apospory is :

 
 
 
 

391. What is mycorrhiza?

 
 
 
 

392. In moss, reduction division occurs in :

 
 
 
 

393. First animal pathogenic virus was discovered by:

 
 
 
 

394. Water bloom is generally caused by :

 
 
 
 

395. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398. The sporangia of Selaginella are attached:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

402. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

404. Rhizoids of Riccia are :

 
 
 
 

405. The term stele was given by:

 
 
 
 

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

 
 
 
 

407. What are plasmids?

 
 
 
 

408. Streptomycin is obtained from:

 
 
 
 

409. Viruses have:

 
 
 
 

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

 
 
 
 

411. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. Number of capsomeres forming capsid of TMV is:

 
 
 
 

415. Vegetative reproduction in Cycas is by means of :

 
 
 
 

416. Embryophyta includes :

 
 
 
 

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

 
 
 
 

418. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

420.

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

 
 
 
 

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

 
 
 
 

423. Which class of Protozoa includes all parasitic forms?

 
 
 
 

424. Heterocysts are found in :

 
 
 
 

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

 
 
 
 

426. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. Which of the following are absent in Mycoplasma?

 
 
 
 

431. In a diplontic life cycle:

 
 
 
 

432. Desired type of Cycas can be grown by:

 
 
 
 

433. Cap cells are found in the filament of:

 
 
 
 

434. Saccharomyces ludwigii ascus produces:

 
 
 
 

435. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

436. Usually, bacteria reproduce by:

 
 
 
 

437. 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:

 
 
 
 

438. The fungi are usually:

 
 
 
 

439. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

441. What is special feature of fern archegonia?

 
 
 
 

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

 
 
 
 

443. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

445. Which of the following is true for viruses?

 
 
 
 

446. Which is a tautonym?

 
 
 
 

447. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

450. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

454. Acellular slime mold is/are:

 
 
 
 

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

 
 
 
 

456. What is a vector?

 
 
 
 

457. Transfusion tissue is present in the leaflet of:

 
 
 
 

458. Yeast belongs to class:

 
 
 
 

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

 
 
 
 

460. Indusium in Dryopteris is:

 
 
 
 

461. All archaebacteria lack:

 
 
 
 

462. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

463. The archegonia of Selaginella are differentiated by:

 
 
 
 

464. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

467. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

469. The leaf of Cycas shows:

 
 
 
 

470. In dinoflagellates, the two flagella are:

 
 
 
 

471. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

474. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

476. Metulae are found in:

 
 
 
 

477. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

483. Pollination drop is:

 
 
 
 

484. The gametophyte of moss has distinct phases :

 
 
 
 

485. Zoogametes are not found in:

 
 
 
 

486. Male gametes in Dryopteris are:

 
 
 
 

487. Pseudomycelium is found in:

 
 
 
 

488. Multicellular and jacketed sex organs are found in :

 
 
 
 

489. Coenogamete is found in:

 
 
 
 

490. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

492. The lichens growing on rocks are called :

 
 
 
 

493. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

495. Centric discoid form of diatom is:

 
 
 
 

496. Green plants are classified as:

 
 
 
 

497. Spermatophyta are characterized by producing:

 
 
 
 

498. 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?

 
 
 
 

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

 
 
 
 

500. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

502. Water-net is the name of:

 
 
 
 

503. The lambda phase is a:

 
 
 
 

504. The roots of Cycas are :

 
 
 
 

505. Climbers are found in genus:

 
 
 
 

506. To which class Riccia belongs :

 
 
 
 

507. Ovules are not found enclosed in ovary of:

 
 
 
 

508. An alga which is rich in proteins:

 
 
 
 

509. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

513. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

516. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

518. E coli is a:

 
 
 
 

519. The chloroplast of Chlamydomonas are:

 
 
 
 

520. In Pteris, the archegonia are present:

 
 
 
 

521. Heterosporous pteridophytes always form:

 
 
 
 

522. Who named prion?

 
 
 
 

523. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

526. The disease symptom necrosis refers to :

 
 
 
 

527. In angiosperms double fertilization represents:

 
 
 
 

528. Sporophyte of fern is:

 
 
 
 

529. Who discovered heterothallism in fungi?

 
 
 
 

530. True sexuality is not found in:

 
 
 
 

531. Why is Cycas called a living fossil?

 
 
 
 

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

 
 
 
 

533. The chief characteristic of bryophyta is that :

 
 
 
 

534. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

535. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

538. Bryophyta have a special character from other plants:

 
 
 
 

539. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. The alga, Spirogyra are found in :

 
 
 
 

543. Lichens are indicators of :

 
 
 
 

544. Redness of red sea is due to :

 
 
 
 

545. Sleeping sickness disease in man is caused by:

 
 
 
 

546. The genetic material of poxvirus is:

 
 
 
 

547. The group algae possesses representatives belonging to kingdom:

 
 
 
 

548. Botulism is a:

 
 
 
 

549.

 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

553. Interferon is a:

 
 
 
 

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

 
 
 
 

555. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

557. The fungi used as food are:

 
 
 
 

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

 
 
 
 

559. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

561. Generic name of mango is:

 
 
 
 

562. Liverworts are included in :

 
 
 
 

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

 
 
 
 

564. Pasteurization of milk involves heating for:

 
 
 
 

565. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

567. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

569. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

572. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

574. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

577. 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:

 
 
 
 

578. The source of litmus is :

 
 
 
 

579. The sporophyte of Riccia is represented by :

 
 
 
 

580. Common phycobiont in a lichen is :

 
 
 
 

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

 
 
 
 

582. Protists which are diploid reproduce sexually by:

 
 
 
 

583. The orders generally have the uniform endings:

 
 
 
 

584. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

586. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

588. Funaria is a Bryophyta because :

 
 
 
 

589. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

591. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

593. The plants of Funaria grow :

 
 
 
 

594. The zoospores of Ulothrix are :

 
 
 
 

595. In Cycas:

 
 
 
 

596. Embryophyta includes:

 
 
 
 

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

 
 
 
 

598. Clostridium can:

 
 
 
 

599. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

601. Aflatoxin is produced as a product in :

 
 
 
 

602. Aflatoxin is produced by:

 
 
 
 

603. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

605. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

607. Ovules are not found enclosed in ovary in :

 
 
 
 

608. The sporophyte of Riccia is :

 
 
 
 

609. Acetobacter is useful in:

 
 
 
 

610. The male gametes of Pinus are :

 
 
 
 

611. The megaspore of Selaginella on germination produces:

 
 
 
 

612. Which is a redwood tree?

 
 
 
 

613. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

616. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

618. Which of the following are included in Tracheophyta?

 
 
 
 

619. Among the algae kelps are :

 
 
 
 

620. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

622. In moss, stomata are found:

 
 
 
 

623. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

625. Cycas is similar to a mustard plant :

 
 
 
 

626. Fern phloem lacks:

 
 
 
 

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

 
 
 
 

628. Pasteurized milk is:

 
 
 
 

629. Seeds are characteristically found in:

 
 
 
 

630. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

633. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

637. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

639. Who discovered streptomycin?

 
 
 
 

640. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

642. Spores of which plants have chloroplast:

 
 
 
 

643. Each chloroplast in Spirogyra bears :

 
 
 
 

644. Detailed study of bacteriophage was made by:

 
 
 
 

645. LSD is:

 
 
 
 

646. Mycoplasma was discovered by:

 
 
 
 

647. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

651. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

653. 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:

 
 
 
 

654. The spermatozoids of Cycas are :

 
 
 
 

655. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

657. Which is the nuclear material in bacteria?

 
 
 
 

658. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Select the wrong statement:

 
 
 
 

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

 
 
 
 

663. All protozoans possess:

 
 
 
 

664. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

666. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

668. Lichens are the indicator of pollution :

 
 
 
 

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

 
 
 
 

670. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

675. Asexual reproductive body of Volvox is called:

 
 
 
 

676. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

678. In moss, peristomial teeth are:

 
 
 
 

679. Seeds are characteristically found in :

 
 
 
 

680. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

682. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

684. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

686. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

689. Ulothrix produces :

 
 
 
 

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

 
 
 
 

691. Total parasites belong to:

 
 
 
 

692. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

695. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

699. Sexual reproduction of lichen is due to :

 
 
 
 

700. The microsporophylls on the cone of Cycas are :

 
 
 
 

701. Fruits are not found in:

 
 
 
 

702. Water-borne bacterial diseases are:

 
 
 
 

703. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

704.

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

 
 
 
 

706. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

707. The ferns are usually found:

 
 
 
 

708. The leaves of Funaria are :

 
 
 
 

709. Some diseases caused by bacteria are:

 
 
 
 

710. Smut of maize is caused by :

 
 
 
 

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

 
 
 
 

712. Most primitive group of vascular plants are:

 
 
 
 

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

 
 
 
 

714. Which of the following shows heterotrichous habit?

 
 
 
 

715. Meristele of fern is:

 
 
 
 

716. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. Woody climbers are known as :

 
 
 
 

721. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

723. Triple antigen injection or vaccine are for:

 
 
 
 

724. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

727. The rhizoids of Funaria are :

 
 
 
 

728. The gametophyte of fern is as:

 
 
 
 

729. Black rust of wheat is caused by:

 
 
 
 

730. Which statement is wrong in regard to bacteria?

 
 
 
 

731. Lichens are pioneers of vegetation in a :

 
 
 
 

732. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

735. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. Gymnosperms could also be called as:

 
 
 
 

739. Select the wrong statement:

 
 
 
 

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

 
 
 
 

741. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

746. Cryptogams include :

 
 
 
 

747. What are Cyanobacteria?

 
 
 
 

748. The antherozoids of Funaria are :

 
 
 
 

749. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

752. John Hutchinson divided dicots into two divisions:

 
 
 
 

753. Winged seeds are found in :

 
 
 
 

754. 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:

 
 
 
 

755. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

757. Plasmids are:

 
 
 
 

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

 
 
 
 

759. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

761. Placenta in fern is:

 
 
 
 

762. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

764. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

766. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

768. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

771. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

776. Economic importance of bacteria lies in their being:

 
 
 
 

777. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

779. Leprosy is caused by:

 
 
 
 

780. The smallest bacterium is:

 
 
 
 

781. Cleavage polyembryony is found in :

 
 
 
 

782. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

784. Circular DNA is seen in:

 
 
 
 

785. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

790. Saccharomyces is well known for:

 
 
 
 

791. Penicillin is obtained from:

 
 
 
 

792. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

796. Heterospory is the production of:

 
 
 
 

797. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

800. In Funaria, calyptra is derived from :

 
 
 
 

801. Amoeba is a member of the phylum:

 
 
 
 

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

 
 
 
 

803. Roots are absent in :

 
 
 
 

804. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

806. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

808. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

811. Viroids have:

 
 
 
 

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

 
 
 
 

813. Which causes red tide?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

820. Which of the following have algal zone?

 
 
 
 

821. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

823. Cycas is:

 
 
 
 

824. The two conjugating gametangia of Rhizopus are:

 
 
 
 

825. Some biologists have used the term Mycetozoa for:

 
 
 
 

826. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

831. Chemosynthetic bacteria are:

 
 
 
 

832. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

834. Club moss and Peat moss belong to:

 
 
 
 

835. Rhizopus belongs to:

 
 
 
 

836. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Kuru, a human disease is caused by:

 
 
 
 

841. Typhoid in man is caused by:

 
 
 
 

842. Fern prothallus is:

 
 
 
 

843. In Gymnosperms endosperm is a:

 
 
 
 

844. Cycas is :

 
 
 
 

845. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. The sporangium of fern contains nearly:

 
 
 
 

849. In moss, sporogenous tissue arises from:

 
 
 
 

850. Spirogyra represents the :

 
 
 
 

851. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

853. Green plants are classified as :

 
 
 
 

854. Which of the following does not contain chlorophyll?

 
 
 
 

855. Funaria are commonly found :

 
 
 
 

856. Methanogens belong to:

 
 
 
 

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

 
 
 
 

858. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

861. Cocci types of bacteria are:

 
 
 
 

862. The prothallus of fern is:

 
 
 
 

863. The upper region of moss capsule is :

 
 
 
 

864. The smallest unit of classification is: