Quiz_Random

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Etiology includes the study of :

 
 
 
 

5. Which group of algae have an incipient nucleus?

 
 
 
 

6. The sori in Dryopteris are found on:

 
 
 
 

7. 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:

 
 
 
 

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

 
 
 
 

9. In dinoflagellates, the two flagella are:

 
 
 
 

10. The tree fern is:

 
 
 
 

11. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

12. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

14. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

15. Endemic plants are characterised by their:

 
 
 
 

16. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

18. Rhizopus belongs to:

 
 
 
 

19. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

20. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

23. Metulae are found in:

 
 
 
 

24. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

26. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

28. Cycas is different from mango in :

 
 
 
 

29. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

31. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

33. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

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

 
 
 
 

35. Nitrogen-fixing bacteria may be located:

 
 
 
 

36. Which lichen is called Reindeer moss?

 
 
 
 

37. The word “sea weeds” is used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

42. Photoautotrophic bacteria have:

 
 
 
 

43. Most primitive group of vascular plants are:

 
 
 
 

44. Clostridium can:

 
 
 
 

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

 
 
 
 

46. Which of the following shows heterotrichous habit?

 
 
 
 

47. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

49. Siphonogamy is found in:

 
 
 
 

50. The coralloid roots are :

 
 
 
 

51. Transfusion tissue is present in the leaflet of:

 
 
 
 

52. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

54. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

60. Economic importance of bacteria lies in their being:

 
 
 
 

61. 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?

 
 
 
 

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

 
 
 
 

63. The sporophyte of Riccia is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Fern prothallus produces:

 
 
 
 

68. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

70. In Gymnosperms endosperm is a:

 
 
 
 

71. Botulism is a:

 
 
 
 

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

 
 
 
 

73. Cleavage polyembryony is found in :

 
 
 
 

74. The sporangium of fern contains nearly:

 
 
 
 

75. Water-net is the name of:

 
 
 
 

76. Early blight of potato is caused by:

 
 
 
 

77. Which is the correct statement about Selaginella?

 
 
 
 

78. The smallest bacterium is:

 
 
 
 

79. All algae have:

 
 
 
 

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

 
 
 
 

81. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

86. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Pythium debaryanum is the causative agent of:

 
 
 
 

90. Sporophyte of Funaria is :

 
 
 
 

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

 
 
 
 

92. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Smallpox is caused by:

 
 
 
 

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

 
 
 
 

97. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. The mycelium of Rhizopus is:

 
 
 
 

101. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

103. Bryophyta have a special character from other plants:

 
 
 
 

104. Which causes red tide?

 
 
 
 

105. The prothallus of fern is:

 
 
 
 

106. Ovary is absent in:

 
 
 
 

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

 
 
 
 

108. Enzymes are absent in:

 
 
 
 

109. Heterospory and ligulate leaves are a feature of:

 
 
 
 

110. Heterocysts are found in :

 
 
 
 

111. The term stele was given by:

 
 
 
 

112. Which of the following does not contain chlorophyll?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

119. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. Funaria can be differentiated from Cycas :

 
 
 
 

126. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

128. Azolla and Salvinia both are:

 
 
 
 

129. Vascular cryptogam is the term used for :

 
 
 
 

130. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

132. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

134. Disease resistant plant varieties can be produced by :

 
 
 
 

135. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

136. Cyanophage is a virus that attacks:

 
 
 
 

137. The largest known bacterium is:

 
 
 
 

138. Ovules are not found enclosed in ovary in :

 
 
 
 

139. Bacteriophages have been used as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

142. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

144. 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?

 
 
 
 

145. Which of the following is true for viruses?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

148. The gametophyte of fern bears:

 
 
 
 

149. The stele of Dryopteris is a:

 
 
 
 

150. The megasporangium of Selaginella is:

 
 
 
 

151. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

154. Aflatoxin is produced as a product in :

 
 
 
 

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

 
 
 
 

156. Mucilaginous canals in Cycas are found in :

 
 
 
 

157. What is absent in Deuteromycetes?

 
 
 
 

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

 
 
 
 

159. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. Yeast is a source of:

 
 
 
 

163. Which is the nuclear material in bacteria?

 
 
 
 

164. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

166. What are plasmids?

 
 
 
 

167. Lichens are pioneers of vegetation in a :

 
 
 
 

168. Diploxylic vascular bundles are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

171. Anoxygenic photosynthesis occurs in:

 
 
 
 

172. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

174. Club moss is the common name of :

 
 
 
 

175. Germ theory of disease was proposed by:

 
 
 
 

176. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

180. The microsporophylls on the cone of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

183. Total parasites belong to:

 
 
 
 

184. Saccharomyces is well known for:

 
 
 
 

185. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

189. Which is not true for Escherichia coli?

 
 
 
 

190. Gymnosperms could also be called as:

 
 
 
 

191. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

194. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

196. LSD is:

 
 
 
 

197. Vascular cryptogams is the term used for:

 
 
 
 

198. E coli is a:

 
 
 
 

199. All protozoans possess:

 
 
 
 

200.

201. The photosynthetic protists are:

 
 
 
 

202. Most of the algae are :

 
 
 
 

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

 
 
 
 

204. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

206. In Cycas which structure is equivalent to stamen?

 
 
 
 

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

 
 
 
 

208. Simple polyembryony is found in :

 
 
 
 

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

 
 
 
 

210. Sexual reproduction in Rhizopus is by:

 
 
 
 

211. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

212. The two conjugating gametangia of Rhizopus are:

 
 
 
 

213. Placenta in fern is:

 
 
 
 

214. Saccharomyces is used in:

 
 
 
 

215. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

218. White rust of crucifers is caused by:

 
 
 
 

219. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

221. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

224. Iodine is obtained from:

 
 
 
 

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

 
 
 
 

226. Most primitive embryophytes are placed in :

 
 
 
 

227. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

230. The fungi are usually:

 
 
 
 

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

 
 
 
 

232. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

236. Which of the following have algal zone?

 
 
 
 

237. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

239. Which of the following is true for Selaginella?

 
 
 
 

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

 
 
 
 

241. Number of capsomeres forming capsid of TMV is:

 
 
 
 

242. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

244. In Pteris, the archegonia are present:

 
 
 
 

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

 
 
 
 

246. Antibiotic has been extracted from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

251. Most primitive embryophytes are placed in:

 
 
 
 

252. What is special feature of fern archegonia?

 
 
 
 

253. Asexual reproductive body of Volvox is called:

 
 
 
 

254. Fruits are not found in :

 
 
 
 

255. Which of the following is a monocot?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. Fruits are not found in:

 
 
 
 

262. In a bacteriophage, DNA is present in:

 
 
 
 

263. To which country Antony van Leeuwenhoek belong?

 
 
 
 

264. Bacteria were first discovered by:

 
 
 
 

265. In angiosperms double fertilization represents:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

269. Methanogens belong to:

 
 
 
 

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

 
 
 
 

271. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

273. Pinus is:

 
 
 
 

274. Broad spectrum antibiotic is, which:

 
 
 
 

275. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

278. The middle sterile part of capsule is called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

284. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

286. Quarantine regulations are concerned with:

 
 
 
 

287. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

290. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

293. The central part of Funaria axis is :

 
 
 
 

294. The genetic material of poxvirus is:

 
 
 
 

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

 
 
 
 

296. Sleeping sickness disease in man is caused by:

 
 
 
 

297. How is moss different from fern?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

300. The DNA of E coli is:

 
 
 
 

301. Seeds are characteristically found in:

 
 
 
 

302. Facultative parasite is:

 
 
 
 

303. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

305. Select the wrong statement:

 
 
 
 

306. Parmelia belongs to :

 
 
 
 

307. Mycoplasma are:

 
 
 
 

308. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

310. Which of the following is a heterosporous pteridophyte?

 
 
 
 

311. Citrus canker is caused by:

 
 
 
 

312. Fern prothallus is:

 
 
 
 

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

 
 
 
 

314. Which is a gametophytic tissue?

 
 
 
 

315. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

317. Circular DNA is seen in:

 
 
 
 

318. Cycas is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

321. Who discovered cyanophages?

 
 
 
 

322. The sporangiophores in Rhizopus are:

 
 
 
 

323. The phloem of vascular system of Cycas is :

 
 
 
 

324. Yeast belongs to class:

 
 
 
 

325. First animal pathogenic virus was discovered by:

 
 
 
 

326. Longest known virus is:

 
 
 
 

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

 
 
 
 

328. Chemosynthetic bacteria are:

 
 
 
 

329. Rhizoids of Riccia are :

 
 
 
 

330. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

334. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

336. In moss, stomata are found:

 
 
 
 

337. Late blight of potato is caused by :

 
 
 
 

338. Most appropriate word for protozoans is:

 
 
 
 

339. The flagella of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

341. Lichens are ecologically important because :

 
 
 
 

342. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Azolla growing in paddy fields helps in:

 
 
 
 

346. The fungi that grow on wood are called:

 
 
 
 

347. The roots of Cycas are :

 
 
 
 

348. Which is a fungicide?

 
 
 
 

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

 
 
 
 

350. The order generally ends with:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

353. Which condition is found in Cycas?

 
 
 
 

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

 
 
 
 

355. Seeds are characteristically found in :

 
 
 
 

356. Germination of the seed of Pinus is :

 
 
 
 

357. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

359. Which organisms are the oldest life forms?

 
 
 
 

360. Genetic material of TMV is:

 
 
 
 

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

 
 
 
 

362. The largest alga is:

 
 
 
 

363. Interferon is a:

 
 
 
 

364. In Gymnocarpeae the fruiting body is :

 
 
 
 

365. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

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

 
 
 
 

367. Gametophyte is the main plant body in :

 
 
 
 

368. The mode of nutrition of bacteria is usually:

 
 
 
 

369. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

374. Special feature of pollen grains of Pinus is :

 
 
 
 

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

 
 
 
 

376. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

378. Cap cells are found in the filament of:

 
 
 
 

379. Pseudomycelium is found in:

 
 
 
 

380. All archaebacteria lack:

 
 
 
 

381. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

382. What is streptomycin?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

388. Cycas is similar to a mustard plant :

 
 
 
 

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

 
 
 
 

390.

391. Acellular slime mold is/are:

 
 
 
 

392. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

394. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

397. Citrus canker is caused by :

 
 
 
 

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

 
 
 
 

399. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

400. The sexual reproductive organs in Rhizopus are:

 
 
 
 

401. The gametophyte of fern is as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

405. Reserve food in Euglena is:

 
 
 
 

406. Which have the largest antherozoid?

 
 
 
 

407. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

409. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

414. The antherozoids of Funaria are :

 
 
 
 

415. Bentham and Hooker placed gymnosperms:

 
 
 
 

416. Iodine is obtained from :

 
 
 
 

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

 
 
 
 

418. John Hutchinson divided dicots into two divisions:

 
 
 
 

419. Most primitive kind of flower is represented by:

 
 
 
 

420. Protozoans are considered animals because these are:

 
 
 
 

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

 
 
 
 

422. The leaves of Funaria are :

 
 
 
 

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

 
 
 
 

424. The similarity between cyanobacteria and bacteria:

 
 
 
 

425. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

430. Liverworts are included in :

 
 
 
 

431. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

435. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

437. Which statement is wrong in regard to bacteria?

 
 
 
 

438. Psilotum is:

 
 
 
 

439. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

441. In a diplontic life cycle:

 
 
 
 

442. Lichens are indicators of :

 
 
 
 

443. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

447. Meristele of fern is:

 
 
 
 

448. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

452. Vascular tissue is found in :

 
 
 
 

453. Which of the following is a parasitic algae?

 
 
 
 

454. Late blight of potato is caused by:

 
 
 
 

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

 
 
 
 

456. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

459. Ovules are not found enclosed in ovary in :

 
 
 
 

460. The sporangia of Selaginella are attached:

 
 
 
 

461. Coenogamete is found in:

 
 
 
 

462. Which of the following is sago palm?

 
 
 
 

463. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

465. Fruiting body of lichens is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

468. In Cycas:

 
 
 
 

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

 
 
 
 

470. Virion refers to:

 
 
 
 

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

 
 
 
 

472. Which of the following statement is correct?

 
 
 
 

473. Funaria is :

 
 
 
 

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

 
 
 
 

475. Streptomyces falls under:

 
 
 
 

476. In moss, peristomial teeth are:

 
 
 
 

477. Why is Cycas called a living fossil?

 
 
 
 

478. Funaria are commonly found :

 
 
 
 

479. Cocci types of bacteria are:

 
 
 
 

480. Which part of Riccia bears nurse cells?

 
 
 
 

481. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Penicillin is obtained from:

 
 
 
 

485. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

489. The gametophyte produced by apospory is :

 
 
 
 

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

 
 
 
 

491. The leaves of Funaria are :

 
 
 
 

492. Downy mildew disease is caused by :

 
 
 
 

493. Detailed study of bacteriophage was made by:

 
 
 
 

494. Which is a redwood tree?

 
 
 
 

495. Each chloroplast in Spirogyra bears :

 
 
 
 

496. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

500. Woody climbers are known as :

 
 
 
 

501. 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:

 
 
 
 

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

 
 
 
 

503. Lichens reproduce by :

 
 
 
 

504. Chemosynthetic bacteria are:

 
 
 
 

505. Mycoplasma is different from bacteria due to:

 
 
 
 

506. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

514. Bacteria are placed under:

 
 
 
 

515. Zoogametes are not found in:

 
 
 
 

516. Botulinum toxin effects:

 
 
 
 

517. Male gametophyte of Selaginella is found:

 
 
 
 

518. Spores of which plants have chloroplast:

 
 
 
 

519. Little leaf disease of Brinjal is caused by:

 
 
 
 

520. Bacteriophage consists of:

 
 
 
 

521. The chief characteristic of class Ascomycetes is:

 
 
 
 

522. Which one of the following is a monocot?

 
 
 
 

523. Oswald Tippo’s classification is:

 
 
 
 

524. Multicellular and jacketed sex organs are found in :

 
 
 
 

525. Amoeba is a member of the phylum:

 
 
 
 

526. Ulothrix produces :

 
 
 
 

527. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

529. Which is not found in bacteria?

 
 
 
 

530. The archegonia of Selaginella are differentiated by:

 
 
 
 

531. One of the distinctive feature of Spirogyra is :

 
 
 
 

532. In Selaginella, the microsporangia are:

 
 
 
 

533. Embryophyta includes :

 
 
 
 

534. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

536. The role of meiosis is for:

 
 
 
 

537. A gill of Agaricus:

 
 
 
 

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

 
 
 
 

539. Oswald Tippo’s classification was based on :

 
 
 
 

540. Rhizopus and yeast are usually:

 
 
 
 

541. Who discovered heterothallism in fungi?

 
 
 
 

542. Which is a tautonym?

 
 
 
 

543. Vegetative reproduction in Cycas is by means of :

 
 
 
 

544. Mostly type of zygospore in Ulothrix is:

 
 
 
 

545. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

547. Mycoplasma contains:

 
 
 
 

548. Roots are absent in :

 
 
 
 

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

 
 
 
 

550. Lichens are the indicator of pollution :

 
 
 
 

551. Virus and bacteriophage are made-up of:

 
 
 
 

552. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

556. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

558. 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:

 
 
 
 

559. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

563. 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:

 
 
 
 

564. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

566. Smut of maize is caused by :

 
 
 
 

567. The tallest moss in the world is :

 
 
 
 

568. Choose the correct statement about Spirogyra:

 
 
 
 

569. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

571. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

573. An Hfr bacterium is one that contains:

 
 
 
 

574. NBG of Lucknow is now named as:

 
 
 
 

575. The fungi used as food are:

 
 
 
 

576. Funaria is a Bryophyta because :

 
 
 
 

577. Which one of the following statement is wrong?

 
 
 
 

578. The chromosomal number in:

 
 
 
 

579. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

581. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

585. Viruses have:

 
 
 
 

586. The prothallus of fern represents the plant:

 
 
 
 

587. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

589. The fungi are mostly:

 
 
 
 

590. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

592. Which is an edible fungus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

596. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

598. Spirogyra represents the :

 
 
 
 

599. Gram stain is used to:

 
 
 
 

600. Cryptogams include :

 
 
 
 

601. Lichens form the first community in

 
 
 
 

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

 
 
 
 

603. Who discovered streptomycin?

 
 
 
 

604.

 

605. The most important property of yeast is:

 
 
 
 

606. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

608. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

610. In moss, calyptra is formed from:

 
 
 
 

611. Cellular slime mold is:

 
 
 
 

612. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

614. Fern phloem lacks:

 
 
 
 

615. The young leaves of Cycas have :

 
 
 
 

616. Isomorphic type alternation of generation is found in:

 
 
 
 

617. The chloroplast of Chlamydomonas are:

 
 
 
 

618. Which is absent from the xylem of Cycas?

 
 
 
 

619. Fern plants are:

 
 
 
 

620. The ferns are usually found:

 
 
 
 

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

 
 
 
 

622. The most primitive vascular plants is:

 
 
 
 

623. The seedless plants which possess vascular tissues are:

 
 
 
 

624. Ginkgo biloba is a:

 
 
 
 

625. The chief characteristic of bryophyta is that :

 
 
 
 

626. Acetobacter is useful in:

 
 
 
 

627. In Herpes virus DNA is:

 
 
 
 

628. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

631. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

633. Red rot of sugarcane is caused by :

 
 
 
 

634. Fertility of the soil is increased by:

 
 
 
 

635. Facultative saprophyte is:

 
 
 
 

636. Desired type of Cycas can be grown by:

 
 
 
 

637. Rice, pea, potato are :

 
 
 
 

638. Ergot of rye is caused by:

 
 
 
 

639. Selaginella differs from Moss in having:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

642. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

643. The male gametes of Pinus are :

 
 
 
 

644. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. The zygospore in Rhizopus on germination forms:

 
 
 
 

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

 
 
 
 

651. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

654. Saccharomyces ludwigii ascus produces:

 
 
 
 

655. In moss, reduction division occurs in :

 
 
 
 

656. Infective part of virus was discovered by:

 
 
 
 

657. Ovules are not found enclosed in ovary of:

 
 
 
 

658. What is the role of nitrifying bacteria?

 
 
 
 

659. How a fern differs from a moss?

 
 
 
 

660. The alga, Spirogyra are found in :

 
 
 
 

661. In binomial system most of the words are:

 
 
 
 

662. Pollination in Pinus is :

 
 
 
 

663. In Funaria, calyptra is derived from :

 
 
 
 

664. 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?

 
 
 
 

665. Lichens show :

 
 
 
 

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

 
 
 
 

667. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

669. Heterospory is the production of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

673. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

675. Bacteria differ from viruses in being sensitive to:

 
 
 
 

676. The Rhizopus is:

 
 
 
 

677. Where does meiosis occur in yeast?

 
 
 
 

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

 
 
 
 

679. Which of the following lichens is harmful?

 
 
 
 

680. Milk is converted to curd by:

 
 
 
 

681. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

683. Mycoplasma are sensitive to:

 
 
 
 

684. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

686. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

688. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

690. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

693. The upper region of moss capsule is :

 
 
 
 

694. What is a vector?

 
 
 
 

695. Ovary is absent in :

 
 
 
 

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

 
 
 
 

697. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. Green plants are classified as :

 
 
 
 

701.

702. In tracheophyta:

 
 
 
 

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

 
 
 
 

704. Bacteria are considered to be plants because they:

 
 
 
 

705. Common phycobiont in a lichen is :

 
 
 
 

706. Which of the following have a prokaryotic cell?

 
 
 
 

707. In Pteris, the roots are:

 
 
 
 

708. The lambda phase is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. Which fixes atmospheric nitrogen?

 
 
 
 

712. . Tapetum develops in:

 
 
 
 

713. Black rust of wheat is caused by:

 
 
 
 

714. Male gametes in Dryopteris are:

 
 
 
 

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

 
 
 
 

716. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

717. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

720. 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:

 
 
 
 

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

 
 
 
 

722. Black rust of wheat is caused by:

 
 
 
 

723. Which among the following is a shrub?

 
 
 
 

724. Which of the following are included in Tracheophyta?

 
 
 
 

725. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

727. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

729. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

731. Helotism word is used for the symbiosis between :

 
 
 
 

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

 
 
 
 

733. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

735. Photosynthetic bacteria have:

 
 
 
 

736. Which of the following are included in Tracheophyta?

 
 
 
 

737. Polystelic condition is found in:

 
 
 
 

738. Rhizophore of Selaginella is:

 
 
 
 

739. Select the wrong statement:

 
 
 
 

740. Meiosis in Ulothrix takes place:

 
 
 
 

741. True sexuality is not found in:

 
 
 
 

742. The smallest unit of classification is:

 
 
 
 

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

 
 
 
 

744. Pteridophyta are also called:

 
 
 
 

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

 
 
 
 

746. Cycas is :

 
 
 
 

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

 
 
 
 

748. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

750. 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:

 
 
 
 

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

 
 
 
 

752. Most of the lichens are composed of :

 
 
 
 

753. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

755. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

758. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

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

 
 
 
 

760. Discovery of penicillin was based on:

 
 
 
 

761. The root nodules of leguminous plants contain:

 
 
 
 

762. Kuru, a human disease is caused by:

 
 
 
 

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

 
 
 
 

764. Yeast grows more rapidly in:

 
 
 
 

765. Majority of lichens are :

 
 
 
 

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

 
 
 
 

767. The group algae possesses representatives belonging to kingdom:

 
 
 
 

768. Viruses are considered to be:

 
 
 
 

769. Among the algae kelps are :

 
 
 
 

770. Soil fertility is lost by the activities of:

 
 
 
 

771. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

773. Ergot is obtained from :

 
 
 
 

774. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

776. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

780. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

783. The teeth of peristome of Funaria are :

 
 
 
 

784. Which of the following are absent in Mycoplasma?

 
 
 
 

785. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

788. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

802. Typhoid in man is caused by:

 
 
 
 

803. Pasteur is famous for his:

 
 
 
 

804. Viroids have:

 
 
 
 

805. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

808. In Funaria :

 
 
 
 

809. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

811. Reproduction in Rhizopus is:

 
 
 
 

812. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

815. The megaspore of Selaginella on germination produces:

 
 
 
 

816. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

818. The leaf of Cycas shows:

 
 
 
 

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

 
 
 
 

820. Green plants are classified as:

 
 
 
 

821. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

823. Centric discoid form of diatom is:

 
 
 
 

824. The fern plant is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

828. Most resistant spore in bacteria is:

 
 
 
 

829. The lichens growing on rocks are called :

 
 
 
 

830. Who named prion?

 
 
 
 

831. Spirogyra differs from moss protonema in having :

 
 
 
 

832. Fairy ring is the name given to:

 
 
 
 

833. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

837. Embryophyta includes:

 
 
 
 

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

 
 
 
 

839. The sporophyte of Riccia is represented by :

 
 
 
 

840. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

849. Which of the following applies to Selaginella?

 
 
 
 

850. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

852. Pollination drop is:

 
 
 
 

853. The source of litmus is :

 
 
 
 

854. Funaria is :

 
 
 
 

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

 
 
 
 

856. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

858. Generic name of mango is:

 
 
 
 

859. Photosynthetic protists belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

862. The disease apple scab is caused by:

 
 
 
 

863. Proembryo in Pinus is :

 
 
 
 

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