Quiz_Random

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

 
 
 
 

2. Which one of the following statement is wrong?

 
 
 
 

3. The two conjugating gametangia of Rhizopus are:

 
 
 
 

4. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

5. The chromosomal number in:

 
 
 
 

6. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

7. In moss, stomata are found:

 
 
 
 

8. The fungi that grow on wood are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Banana bunchy top is caused by :

 
 
 
 

12. The disease apple scab is caused by:

 
 
 
 

13. Botulinum toxin effects:

 
 
 
 

14. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

16. Funaria is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

19. Circular DNA is seen in:

 
 
 
 

20. Psilotum is:

 
 
 
 

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

 
 
 
 

22. Virion refers to:

 
 
 
 

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

 
 
 
 

24. The megaspore of Selaginella on germination produces:

 
 
 
 

25. In a diplontic life cycle:

 
 
 
 

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

 
 
 
 

27. Which of the following is sago palm?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Penicillin was discovered by:

 
 
 
 

31. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

32. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

34. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. In Funaria :

 
 
 
 

45. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

47. Club moss and Peat moss belong to:

 
 
 
 

48. Which of the following applies to Selaginella?

 
 
 
 

49. What is absent in Deuteromycetes?

 
 
 
 

50. Which is an edible fungus?

 
 
 
 

51. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

60. Heterospory is the production of:

 
 
 
 

61. In Funaria, calyptra is derived from :

 
 
 
 

62. What are Cyanobacteria?

 
 
 
 

63. Heterotrichous habit means :

 
 
 
 

64. Transfusion tissue is present in the leaflet of:

 
 
 
 

65. The zygospore in Rhizopus on germination forms:

 
 
 
 

66. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

68. Lichens form the first community in

 
 
 
 

69. Clostridium can:

 
 
 
 

70. Sexual reproduction of lichen is due to :

 
 
 
 

71. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

73. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

76. Fern plants are:

 
 
 
 

77. Leprosy is caused by:

 
 
 
 

78. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

80. Viruses have:

 
 
 
 

81. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

82. Most primitive embryophytes are placed in :

 
 
 
 

83.

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

 
 
 
 

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

 
 
 
 

86. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

87. Rhizopus and yeast are usually:

 
 
 
 

88. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. The role of meiosis is for:

 
 
 
 

95. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

97. The sporophyte of Riccia is represented by :

 
 
 
 

98. Most of the algae are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

102. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. Who named prion?

 
 
 
 

106. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

108. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Quarantine regulations are concerned with:

 
 
 
 

119. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

121. Climbers are found in genus:

 
 
 
 

122. The sexual reproductive organs in Rhizopus are:

 
 
 
 

123. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. The sori in Dryopteris are found on:

 
 
 
 

127. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

129. Photosynthetic bacteria have:

 
 
 
 

130. Germination of the seed of Pinus is :

 
 
 
 

131. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

133. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Broad spectrum antibiotic is, which:

 
 
 
 

138. Interferon is a:

 
 
 
 

139. Streptomycin is obtained from:

 
 
 
 

140. In tracheophyta:

 
 
 
 

141. Most of the lichens are composed of :

 
 
 
 

142. The Rhizopus gametes are formed in:

 
 
 
 

143.

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

 
 
 
 

145. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

147. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

149. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

151. Which one of the following is a monocot?

 
 
 
 

152. The largest alga is:

 
 
 
 

153. The stele of Dryopteris is a:

 
 
 
 

154. Plasmids are:

 
 
 
 

155. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

158. Which is the correct statement about Selaginella?

 
 
 
 

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

 
 
 
 

160. Rhizopus belongs to:

 
 
 
 

161. Ergot is obtained from :

 
 
 
 

162. Most primitive kind of flower is represented by:

 
 
 
 

163. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

165. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

167. Centric discoid form of diatom is:

 
 
 
 

168. Pinus gerardiana is :

 
 
 
 

169. Bivalved siliceous shell or frustule occur in:

 
 
 
 

170. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

172. Halophiles are the bacteria that require for growth:

 
 
 
 

173. Azolla and Salvinia both are:

 
 
 
 

174. Which class of Protozoa includes all parasitic forms?

 
 
 
 

175. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

177. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

178. Typhoid in man is caused by:

 
 
 
 

179. In angiosperms double fertilization represents:

 
 
 
 

180. 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?

 
 
 
 

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

 
 
 
 

182. Which organisms are the oldest life forms?

 
 
 
 

183. Sleeping sickness disease in man is caused by:

 
 
 
 

184. All algae have:

 
 
 
 

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

 
 
 
 

186. Viruses are commonly transmitted in plants through:

 
 
 
 

187. Vascular cryptogams is the term used for:

 
 
 
 

188. Pollination drop is:

 
 
 
 

189. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

192. Zoogametes are not found in:

 
 
 
 

193. Antibiotic has been extracted from :

 
 
 
 

194. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

196. The mycelium of Rhizopus is:

 
 
 
 

197. Mycoplasma are sensitive to:

 
 
 
 

198. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

200. The upper region of moss capsule is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

203. Wine turns sour because of:

 
 
 
 

204. Male gametophyte of Selaginella is found:

 
 
 
 

205. Pollination in Cycas takes place by :

 
 
 
 

206. Amoeba is a member of the phylum:

 
 
 
 

207. Bacteria differ from viruses in being sensitive to:

 
 
 
 

208. Vascular cryptogam is the term used for :

 
 
 
 

209. Ulothrix produces :

 
 
 
 

210. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

212. John Hutchinson divided dicots into two divisions:

 
 
 
 

213. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

214. Water-net is the name of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

221. In moss, calyptra is formed from:

 
 
 
 

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

 
 
 
 

223. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

225. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

227. Chief constituents of bordeaux mixture are :

 
 
 
 

228. In Cycas:

 
 
 
 

229. Soil fertility is lost by the activities of:

 
 
 
 

230. The fungi used as food are:

 
 
 
 

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

 
 
 
 

232. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

235.

 

236. Pollination in Pinus is :

 
 
 
 

237. The chloroplast of Chlamydomonas are:

 
 
 
 

238. Fern prothallus produces:

 
 
 
 

239. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

240. Acellular slime mold is/are:

 
 
 
 

241. Which lichen is called Reindeer moss?

 
 
 
 

242. Heterospory and ligulate leaves are a feature of:

 
 
 
 

243. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

245. Mucilaginous canals in Cycas are found in :

 
 
 
 

246. Aflatoxin is produced by:

 
 
 
 

247. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

249. The most important property of yeast is:

 
 
 
 

250. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

252. Yeast grows more rapidly in:

 
 
 
 

253. Anoxygenic photosynthesis occurs in:

 
 
 
 

254. The DNA of E coli is:

 
 
 
 

255. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

257. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

259. Gram stain is used to:

 
 
 
 

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

 
 
 
 

261. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

263. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

264. What is a vector?

 
 
 
 

265. Green plants are classified as:

 
 
 
 

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

 
 
 
 

267. Most primitive embryophytes are placed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

274. Embryophyta includes :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

279. Pasteur is famous for his:

 
 
 
 

280. Which of the following are absent in Mycoplasma?

 
 
 
 

281. Late blight of potato is caused by :

 
 
 
 

282. LSD is:

 
 
 
 

283. Little leaf disease of Brinjal is caused by:

 
 
 
 

284. Mycoplasma is different from bacteria due to:

 
 
 
 

285. Bacteria which are spherical are called:

 
 
 
 

286. In Pteris, the archegonia are present:

 
 
 
 

287. Which of the following is a heterosporous pteridophyte?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. Most primitive group of vascular plants are:

 
 
 
 

291. Lichens are pioneers of vegetation in a :

 
 
 
 

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

 
 
 
 

293. The similarity between cyanobacteria and bacteria:

 
 
 
 

294. Pinus microsporophyll bears:

 
 
 
 

295. Virus and bacteriophage are made-up of:

 
 
 
 

296. What is the role of nitrifying bacteria?

 
 
 
 

297. Who among the following discovered virus?

 
 
 
 

298. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

300. 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:

 
 
 
 

301. Proembryo in Pinus is :

 
 
 
 

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

 
 
 
 

303. The roots of Cycas are :

 
 
 
 

304. In moss, sporogenous tissue arises from:

 
 
 
 

305. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. The Rhizopus is:

 
 
 
 

312. Ovary is absent in :

 
 
 
 

313. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

315. Usually, bacteria reproduce by:

 
 
 
 

316. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Which is an exception to cell theory?

 
 
 
 

321. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

323. Cyanophage is a virus that attacks:

 
 
 
 

324. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

326. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

328. The male gametes of Pinus are :

 
 
 
 

329. What is special feature of fern archegonia?

 
 
 
 

330. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

335. Facultative parasite is:

 
 
 
 

336. Funaria is a Bryophyta because :

 
 
 
 

337. The term stele was given by:

 
 
 
 

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

 
 
 
 

339. Absorptive nutrition is:

 
 
 
 

340. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

343. Total parasites belong to:

 
 
 
 

344. Which is not true for Escherichia coli?

 
 
 
 

345. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

347. Antibiotics cure the disease by:

 
 
 
 

348. TMV was isolated in crystalline form by:

 
 
 
 

349. Fruits are not found in:

 
 
 
 

350. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

354. Linnaeus is credited with introducing:

 
 
 
 

355. The plants of Funaria grow :

 
 
 
 

356. Bacteria are placed under:

 
 
 
 

357. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

359. The chief characteristic of bryophyta is that :

 
 
 
 

360. Cellular slime mold is:

 
 
 
 

361. Seeds are characteristically found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

364. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

370. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

372. Methanogens belong to:

 
 
 
 

373. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

375. Facultative saprophyte is:

 
 
 
 

376. Cell walls of Gram-positive bacteria contain:

 
 
 
 

377. Cycas is different from mango in :

 
 
 
 

378. The ferns are usually found:

 
 
 
 

379. Selaginella differs from Moss in having:

 
 
 
 

380. Placenta in fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. Heterocysts are found in :

 
 
 
 

384. Pinus is:

 
 
 
 

385. The seedless plants which possess vascular tissues are:

 
 
 
 

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

 
 
 
 

387. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

389. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

391. Lichens are the indicator of pollution :

 
 
 
 

392. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

394. Winged pollen grains are found in :

 
 
 
 

395. The sporangium of fern contains nearly:

 
 
 
 

396. Vascular tissue is found in :

 
 
 
 

397. The development of Selaginella embryo is:

 
 
 
 

398. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

403. Embryophyta includes:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

407. Pythium debaryanum is the causative agent of:

 
 
 
 

408. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

411. How is moss different from fern?

 
 
 
 

412. Ovary is absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

415. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

417. The order generally ends with:

 
 
 
 

418. Ovules are not found enclosed in ovary in :

 
 
 
 

419. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

421. The smallest unit of classification is:

 
 
 
 

422. The fungi are mostly:

 
 
 
 

423. Standard size of a herbarium sheet is:

 
 
 
 

424. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

426. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

428. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

430. How a fern differs from a moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

434. Metulae are found in:

 
 
 
 

435. The prothallus of fern is:

 
 
 
 

436. To which country Antony van Leeuwenhoek belong?

 
 
 
 

437. In Gymnosperms endosperm is a:

 
 
 
 

438. What is streptomycin?

 
 
 
 

439. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

442. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

443. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

445. Heterosporous pteridophytes always form:

 
 
 
 

446. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

447. The megasporangium of Selaginella is:

 
 
 
 

448. True sexuality is not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

451. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

453. The group algae possesses representatives belonging to kingdom:

 
 
 
 

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

 
 
 
 

455. Which is a gametophytic tissue?

 
 
 
 

456. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

458. Meristele of fern is:

 
 
 
 

459. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

461. Majority of lichens are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Simple polyembryony is found in :

 
 
 
 

467. Who discovered cyanophages?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

470. The central part of Funaria axis is :

 
 
 
 

471. Longest known virus is:

 
 
 
 

472. Which of the following statement is correct?

 
 
 
 

473. 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?

 
 
 
 

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

 
 
 
 

475. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

477. Photosynthetic protists belong to:

 
 
 
 

478. In moss, conducting tissue is made up of

 
 
 
 

479.

480. Funaria can be differentiated from Cycas :

 
 
 
 

481. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

483. Protists which are diploid reproduce sexually by:

 
 
 
 

484. Chemosynthetic bacteria are:

 
 
 
 

485. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

487. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

490. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

492. The leaves of Funaria are :

 
 
 
 

493. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

495. What are plasmids?

 
 
 
 

496. The truncated cone of HIV consists of:

 
 
 
 

497. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

499. Cycas is similar to a mustard plant :

 
 
 
 

500. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

503. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Rice, pea, potato are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

512. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

514. The prothallus of fern represents the plant:

 
 
 
 

515. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

517. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

522. Fertility of the soil is increased by:

 
 
 
 

523. The spermatozoids of Cycas are :

 
 
 
 

524. The genetic material of poxvirus is:

 
 
 
 

525. Enteric bacteria are those bacteria that live:

 
 
 
 

526. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. The spur of Pinus roxburghii has :

 
 
 
 

530. Parmelia belongs to :

 
 
 
 

531. The most primitive vascular plants is:

 
 
 
 

532. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

535. . Tapetum develops in:

 
 
 
 

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

 
 
 
 

537. In moss, reduction division occurs in :

 
 
 
 

538. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

540. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

544. Which is a tautonym?

 
 
 
 

545. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

547. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

549. Mycoplasma was discovered by:

 
 
 
 

550. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

552. Fern phloem lacks:

 
 
 
 

553. Reserve food in Euglena is:

 
 
 
 

554. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

556. The coralloid roots are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

561. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

565. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

568. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

570. 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:

 
 
 
 

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

 
 
 
 

572. 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:

 
 
 
 

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

 
 
 
 

574. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

575. Funaria are commonly found :

 
 
 
 

576. Cycas plant in appearance resembles :

 
 
 
 

577. Redness of red sea is due to :

 
 
 
 

578. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. The lambda phase is a:

 
 
 
 

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

 
 
 
 

584. Funaria is :

 
 
 
 

585. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

587. Yeast is a source of:

 
 
 
 

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

 
 
 
 

589. Common phycobiont in a lichen is :

 
 
 
 

590. Fruits are not found in Cycas because:

 
 
 
 

591. In Herpes virus DNA is:

 
 
 
 

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

 
 
 
 

593. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. Which of the following shows heterotrichous habit?

 
 
 
 

597. In binomial system most of the words are:

 
 
 
 

598. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

600. Nannandria are:

 
 
 
 

601. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

605. A gill of Agaricus:

 
 
 
 

606. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

608. Spermatophyta are characterized by producing:

 
 
 
 

609. Siphonogamy is found in:

 
 
 
 

610. Roots are absent in :

 
 
 
 

611. Most resistant spore in bacteria is:

 
 
 
 

612. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

614. 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:

 
 
 
 

615. Winged seeds are found in :

 
 
 
 

616. Which have the largest antherozoid?

 
 
 
 

617. Cycas is:

 
 
 
 

618. Fruits are not found in :

 
 
 
 

619. Choose the correct statement about Spirogyra:

 
 
 
 

620. The source of litmus is :

 
 
 
 

621. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

623. Multicellular and jacketed sex organs are found in :

 
 
 
 

624. Special feature of pollen grains of Pinus is :

 
 
 
 

625. Spirogyra represents the :

 
 
 
 

626. Fairy ring is the name given to:

 
 
 
 

627. Economic importance of bacteria lies in their being:

 
 
 
 

628. Bryophyta have a special character from other plants:

 
 
 
 

629. Select the wrong statement:

 
 
 
 

630. Who discovered streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

634. Pasteurization of milk involves heating for:

 
 
 
 

635. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

637. Bryophyta have been placed in cryptogams because:

 
 
 
 

638. All protozoans possess:

 
 
 
 

639. Desired type of Cycas can be grown by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

642. Bentham and Hooker placed gymnosperms:

 
 
 
 

643. Coenogamete is found in:

 
 
 
 

644. Why is Cycas called a living fossil?

 
 
 
 

645. Agar-agar is obtained from:

 
 
 
 

646. E coli is a:

 
 
 
 

647. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

649. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

652. The gametophyte of fern bears:

 
 
 
 

653. Indusium in Dryopteris is:

 
 
 
 

654. Disease resistant plant varieties can be produced by :

 
 
 
 

655. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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. Etiology includes the study of :

 
 
 
 

659. Which causes red tide?

 
 
 
 

660. Cryptogams include :

 
 
 
 

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

 
 
 
 

662. Ethylene oxide is widely used to:

 
 
 
 

663. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

665. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

671. Pneumonia is caused by:

 
 
 
 

672. Rhizophore of Selaginella is:

 
 
 
 

673. Which part of Riccia bears nurse cells?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. Which fixes atmospheric nitrogen?

 
 
 
 

678. Mostly type of zygospore in Ulothrix is:

 
 
 
 

679. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

681. Iodine is obtained from :

 
 
 
 

682. Some biologists have used the term Mycetozoa for:

 
 
 
 

683. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

686. Sporophyte of Funaria is :

 
 
 
 

687. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

689. Isomorphic type alternation of generation is found in:

 
 
 
 

690. Liverworts are included in :

 
 
 
 

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

 
 
 
 

692. Bacteriophage consists of:

 
 
 
 

693. Cycas is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

696. Cyathia is characterized by:

 
 
 
 

697. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

698. Which of the following is a monocot?

 
 
 
 

699. 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?

 
 
 
 

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

 
 
 
 

701. Cleavage polyembryony is found in :

 
 
 
 

702. Fern prothallus is:

 
 
 
 

703. The fungi are usually:

 
 
 
 

704. Sometimes the bacterial cell is enclosed in:

 
 
 
 

705. Infective part of virus was discovered by:

 
 
 
 

706. Which of the following is true for Selaginella?

 
 
 
 

707. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

709. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

712. Yeast belongs to class:

 
 
 
 

713. Water-borne bacterial diseases are:

 
 
 
 

714. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

718. Most appropriate word for protozoans is:

 
 
 
 

719. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Discovery of penicillin was based on:

 
 
 
 

723. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

725. The root nodules of leguminous plants contain:

 
 
 
 

726. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

728. The tree fern is:

 
 
 
 

729. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

731. Number of capsomeres forming capsid of TMV is:

 
 
 
 

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

 
 
 
 

733. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

735. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

737. Polystelic condition is found in:

 
 
 
 

738. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

741. Lichen show :

 
 
 
 

742. Woody climbers are known as :

 
 
 
 

743. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

745. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

747. The lichens growing on rocks are called :

 
 
 
 

748. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

750. Some bacteria cannot be killed easily because of:

 
 
 
 

751. Bacteria were first discovered by:

 
 
 
 

752. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

756. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

758. The vascular bundles of Cycas stem are :

 
 
 
 

759. The gametophyte of fern is as:

 
 
 
 

760. Which of the following statements is not correct?

 
 
 
 

761. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

763. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

765. Meiosis in Ulothrix takes place:

 
 
 
 

766. Mycoplasma are:

 
 
 
 

767. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

769. Penicillin is obtained from:

 
 
 
 

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

 
 
 
 

771. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

774. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

775. Ginkgo biloba is a:

 
 
 
 

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

 
 
 
 

777. To which class Riccia belongs :

 
 
 
 

778. White rust of crucifers is caused by:

 
 
 
 

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

 
 
 
 

780. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

787. Lichens show :

 
 
 
 

788. Which among the following is a shrub?

 
 
 
 

789. Pseudomycelium is found in:

 
 
 
 

790. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

793. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

795. Enzymes are absent in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

798. Vegetative reproduction in Cycas is by means of :

 
 
 
 

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

 
 
 
 

800. Synzoospore is produced in:

 
 
 
 

801. Maximum diversity of life forms occurs in :

 
 
 
 

802. Lichens are ecologically important because :

 
 
 
 

803. Endemic plants are characterised by their:

 
 
 
 

804. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

806. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

808. Some diseases caused by bacteria are:

 
 
 
 

809. Generic name of mango is:

 
 
 
 

810. Botulism is a:

 
 
 
 

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

 
 
 
 

812. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

816. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. Among the algae kelps are :

 
 
 
 

822. Late blight of potato is caused by:

 
 
 
 

823. The sporangia of Selaginella are attached:

 
 
 
 

824. In moss, sporophyte is formed on:

 
 
 
 

825. 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:

 
 
 
 

826. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

828. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

830. The fern plant is:

 
 
 
 

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

 
 
 
 

832. Smut of maize is caused by :

 
 
 
 

833. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

835. Which is a fungicide?

 
 
 
 

836. Select the correct statement: (NEET 2016)

 
 
 
 

837. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

840. Embryo formation is not known in :

 
 
 
 

841. The sporangiophores in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

847. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

849. Select the wrong statement:

 
 
 
 

850. Which is a redwood tree?

 
 
 
 

851. Green plants are classified as :

 
 
 
 

852. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

855. The first to isolate a plant virus was:

 
 
 
 

856. The antibiotic is obtained from:

 
 
 
 

857. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. The smallest bacterium is:

 
 
 
 

863. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

864. The ascus of yeast contains: