Quiz_Random

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

 
 
 
 

2. Sleeping sickness disease in man is caused by:

 
 
 
 

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

 
 
 
 

4. Facultative parasite is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8.

 

9. TMV was isolated in crystalline form by:

 
 
 
 

10. Aflatoxin is produced as a product in :

 
 
 
 

11. Pneumonia is caused by:

 
 
 
 

12. Lichen show :

 
 
 
 

13. Which is a redwood tree?

 
 
 
 

14. Which is not true for Escherichia coli?

 
 
 
 

15. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. Cellular slime mold is:

 
 
 
 

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

 
 
 
 

20. How is moss different from fern?

 
 
 
 

21. The Rhizopus is:

 
 
 
 

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

 
 
 
 

23. The vascular bundles of Cycas stem are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

30. 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?

 
 
 
 

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

 
 
 
 

32. Diphtheria is caused by:

 
 
 
 

33. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

41. Select the wrong statement:

 
 
 
 

42. Which of the following is sago palm?

 
 
 
 

43. Azolla and Salvinia both are:

 
 
 
 

44. Which of the following are absent in Mycoplasma?

 
 
 
 

45. Choose the correct statement about Spirogyra:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

50. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

52. Reserve food in Euglena is:

 
 
 
 

53. Nannandria are:

 
 
 
 

54. Who discovered heterothallism in fungi?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

57. The most important property of yeast is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. The sori in Dryopteris are found on:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. A gill of Agaricus:

 
 
 
 

69. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

71. Siphonogamy is found in:

 
 
 
 

72. The sporangia of Selaginella are attached:

 
 
 
 

73. 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:

 
 
 
 

74. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. In Gymnosperms endosperm is a:

 
 
 
 

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

 
 
 
 

79. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. In binomial system most of the words are:

 
 
 
 

83. Cleavage polyembryony is found in :

 
 
 
 

84. In Cycas microsporangia are borne on:

 
 
 
 

85. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

90. Aflatoxin is produced by:

 
 
 
 

91. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

93. Red rot of sugarcane is caused by :

 
 
 
 

94. Mycoplasma is different from bacteria due to:

 
 
 
 

95. Streptomycin is obtained from:

 
 
 
 

96. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

101. Club moss and Peat moss belong to:

 
 
 
 

102. Gram stain is used to:

 
 
 
 

103. The source of litmus is :

 
 
 
 

104. Spores of which plants have chloroplast:

 
 
 
 

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

 
 
 
 

106. The sporangiophores in Rhizopus are:

 
 
 
 

107. Viruses are considered to be:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. Polystelic condition is found in:

 
 
 
 

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

 
 
 
 

114. The similarity between cyanobacteria and bacteria:

 
 
 
 

115. Heterosporous pteridophytes always form:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Pasteurization of milk involves heating for:

 
 
 
 

119. The fungi are mostly:

 
 
 
 

120. In tracheophyta:

 
 
 
 

121. The fungi that grow on wood are called:

 
 
 
 

122. Seeds are characteristically found in:

 
 
 
 

123. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

125. Heterotrichous habit means :

 
 
 
 

126. Which group of algae have an incipient nucleus?

 
 
 
 

127. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

129.

130. Which of the following have a prokaryotic cell?

 
 
 
 

131. Which is a tautonym?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Citrus canker is caused by :

 
 
 
 

135. Some diseases caused by bacteria are:

 
 
 
 

136. Pollination in Pinus is :

 
 
 
 

137. Fruits are not found in Cycas because:

 
 
 
 

138. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

140. Rice, pea, potato are :

 
 
 
 

141. Gymnosperms could also be called as:

 
 
 
 

142. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

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

 
 
 
 

144. Sexual reproduction of lichen is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Which is an edible fungus?

 
 
 
 

150. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Acellular slime mold is/are:

 
 
 
 

156. Which is the correct statement about Selaginella?

 
 
 
 

157. Placenta in fern is:

 
 
 
 

158. Cycas is different from mango in :

 
 
 
 

159. Which class of Protozoa includes all parasitic forms?

 
 
 
 

160. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

162. Embryo formation is not known in :

 
 
 
 

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

 
 
 
 

164. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

166. The most primitive vascular plants is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

173. The tallest moss in the world is :

 
 
 
 

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

 
 
 
 

175. Milk is converted to curd by:

 
 
 
 

176. Photosynthetic protists belong to:

 
 
 
 

177. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

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

 
 
 
 

179. Funaria is :

 
 
 
 

180. Fern prothallus is:

 
 
 
 

181. Cycas is similar to a mustard plant :

 
 
 
 

182. Asexual reproductive body of Volvox is called:

 
 
 
 

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

 
 
 
 

184. Nitrogen-fixing bacteria may be located:

 
 
 
 

185. Why is Cycas called a living fossil?

 
 
 
 

186. Gametophyte is the main plant body in :

 
 
 
 

187. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

190. Club moss is the common name of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

198. Rhizopus belongs to:

 
 
 
 

199. Pythium debaryanum is the causative agent of:

 
 
 
 

200. The archegonia in Selaginella develop on:

 
 
 
 

201. Multicellular and jacketed sex organs are found in :

 
 
 
 

202. Each chloroplast in Spirogyra bears :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

206. Green plants are classified as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

210. Pteridophyta are also called:

 
 
 
 

211. Cyanophage is a virus that attacks:

 
 
 
 

212. The seedless plants which possess vascular tissues are:

 
 
 
 

213. 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:

 
 
 
 

214. The upper region of moss capsule is :

 
 
 
 

215. The order generally ends with:

 
 
 
 

216. Red rot of sugarcane is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

219. Clostridium can:

 
 
 
 

220. Genetic material of TMV is:

 
 
 
 

221. Among the algae kelps are :

 
 
 
 

222. The chief characteristic of class Ascomycetes is:

 
 
 
 

223. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

227. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

229. Funaria are commonly found :

 
 
 
 

230. LSD is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

233. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

236. The mycelium of Rhizopus is:

 
 
 
 

237. The sporophyte of Riccia is represented by :

 
 
 
 

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

 
 
 
 

239. Most appropriate word for protozoans is:

 
 
 
 

240. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

244. Black rust of wheat is caused by:

 
 
 
 

245. Ovary is absent in:

 
 
 
 

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

 
 
 
 

247. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

249. Etiology includes the study of :

 
 
 
 

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

 
 
 
 

251. Photoautotrophic bacteria have:

 
 
 
 

252. Coenogamete is found in:

 
 
 
 

253. Antibiotics cure the disease by:

 
 
 
 

254. Viruses are commonly transmitted in plants through:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

261. All algae have:

 
 
 
 

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

 
 
 
 

263. Winged seeds are found in :

 
 
 
 

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

 
 
 
 

265. In moss, reduction division occurs in :

 
 
 
 

266. Yeast is a source of:

 
 
 
 

267. Which of the following are included in Tracheophyta?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

270. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

272. Which of the following are included in Tracheophyta?

 
 
 
 

273. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

274. Fern prothallus produces:

 
 
 
 

275. Spermatophyta are characterized by producing:

 
 
 
 

276. The development of sporangium in Selaginella is:

 
 
 
 

277. The phloem of vascular system of Cycas is :

 
 
 
 

278. The term stele was given by:

 
 
 
 

279. Centric discoid form of diatom is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. Embryophyta includes :

 
 
 
 

283. Which of the following is a monocot?

 
 
 
 

284. Which of the following does not contain chlorophyll?

 
 
 
 

285. Metulae are found in:

 
 
 
 

286. Absorptive nutrition is:

 
 
 
 

287. Reproduction in Rhizopus is:

 
 
 
 

288. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

289. Most of the algae are :

 
 
 
 

290. To which country Antony van Leeuwenhoek belong?

 
 
 
 

291. The prothallus of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

294. Who named prion?

 
 
 
 

295. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

297. Which lichen is called Reindeer moss?

 
 
 
 

298. Fruits are not found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

302. Spirogyra represents the :

 
 
 
 

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

 
 
 
 

304. Cycas is :

 
 
 
 

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

 
 
 
 

306. The leafy fern plant represents the:

 
 
 
 

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

 
 
 
 

308. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

310. The leaves of Funaria are :

 
 
 
 

311. Banana bunchy top is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

317. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Selaginella differs from Moss in having:

 
 
 
 

321. Penicillin is obtained from:

 
 
 
 

322. Discovery of penicillin was based on:

 
 
 
 

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

 
 
 
 

324. Special feature of pollen grains of Pinus is :

 
 
 
 

325. Protists which are diploid reproduce sexually by:

 
 
 
 

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

 
 
 
 

327. Bacteria were first discovered by:

 
 
 
 

328. In angiosperms double fertilization represents:

 
 
 
 

329. Lichens reproduce by :

 
 
 
 

330. The spur of Pinus roxburghii has :

 
 
 
 

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

 
 
 
 

332. Most primitive embryophytes are placed in :

 
 
 
 

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

 
 
 
 

334. Pythium debaryanum is the causative agent of:

 
 
 
 

335. What is special feature of fern archegonia?

 
 
 
 

336. In moss, conducting tissue is made up of

 
 
 
 

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

 
 
 
 

338. Citrus canker is caused by:

 
 
 
 

339. Cycas plant in appearance resembles :

 
 
 
 

340. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

342. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

345. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

346. To which class Riccia belongs :

 
 
 
 

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

 
 
 
 

348. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

350. Funaria is :

 
 
 
 

351. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

353. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

354. Fern phloem lacks:

 
 
 
 

355. 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:

 
 
 
 

356. Spirogyra differs from moss protonema in having :

 
 
 
 

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

 
 
 
 

358. Which condition is found in Cycas?

 
 
 
 

359. Meiosis in Ulothrix takes place:

 
 
 
 

360. The first to isolate a plant virus was:

 
 
 
 

361. Small epidermal swellings due to infection are called :

 
 
 
 

362. The ferns are usually found:

 
 
 
 

363. The tree fern is:

 
 
 
 

364. Typhoid in man is caused by:

 
 
 
 

365. Spermatophyta are characterized by producing:

 
 
 
 

366. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

367. Which one of the following is a monocot?

 
 
 
 

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

 
 
 
 

369. The chief characteristic of bryophyta is that :

 
 
 
 

370. The lambda phase is a:

 
 
 
 

371. Which of the following is a heterosporous pteridophyte?

 
 
 
 

372. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

373. In a bacteriophage, DNA is present in:

 
 
 
 

374. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

376. Cycas revoluta is widely grown as :

 
 
 
 

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

 
 
 
 

378. Penicillin was discovered by:

 
 
 
 

379. Diploxylic vascular bundles are found in:

 
 
 
 

380. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

382. Which is a gametophytic tissue?

 
 
 
 

383. The chromosomal number in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

388. The mode of nutrition of bacteria is usually:

 
 
 
 

389. In Cycas:

 
 
 
 

390. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

391. The coralloid roots are :

 
 
 
 

392. Proembryo in Pinus is :

 
 
 
 

393. Zoogametes are not found in:

 
 
 
 

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

 
 
 
 

395. Azolla growing in paddy fields helps in:

 
 
 
 

396. The leaves of Funaria are :

 
 
 
 

397. In Pteris, the archegonia are present:

 
 
 
 

398. Black rust of wheat is caused by:

 
 
 
 

399. Meristele of fern is:

 
 
 
 

400. Soil fertility is lost by the activities of:

 
 
 
 

401. Plasmids are:

 
 
 
 

402. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

404. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

405. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

409. Who among the following discovered virus?

 
 
 
 

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

 
 
 
 

411. Water bloom is generally caused by :

 
 
 
 

412. Ginkgo biloba is a:

 
 
 
 

413. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

416. Which of the following statements is not correct?

 
 
 
 

417. The chloroplast of Chlamydomonas are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

422. Embryophyta includes:

 
 
 
 

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

 
 
 
 

424. Ergot of rye is caused by:

 
 
 
 

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

 
 
 
 

426. . Tapetum develops in:

 
 
 
 

427. The megaspore of Selaginella on germination produces:

 
 
 
 

428. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

434. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

438. Heterospory is the production of:

 
 
 
 

439. In Herpes virus DNA is:

 
 
 
 

440. In moss, stomata are found:

 
 
 
 

441. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

442. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

444. In Cycas which structure is equivalent to stamen?

 
 
 
 

445. Ulothrix produces :

 
 
 
 

446. Sexual reproduction in Rhizopus is by:

 
 
 
 

447. Early blight of potato is caused by:

 
 
 
 

448. The rhizoids of Funaria are :

 
 
 
 

449. Photosynthetic bacteria have:

 
 
 
 

450. Sporophyte of Funaria is :

 
 
 
 

451. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

453. What is mycorrhiza?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

457. The development of Selaginella embryo is:

 
 
 
 

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

 
 
 
 

459. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

463. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

465. Oswald Tippo’s classification was based on :

 
 
 
 

466. Fruiting body of lichens is :

 
 
 
 

467. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

469. Which one of the following statement is wrong?

 
 
 
 

470. Liverworts are included in :

 
 
 
 

471. Longest known virus is:

 
 
 
 

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

 
 
 
 

473. Lichens reproduce by :

 
 
 
 

474. The Rhizopus gametes are formed in:

 
 
 
 

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

 
 
 
 

476. Lichens show :

 
 
 
 

477. Pollination drop is:

 
 
 
 

478. Lichens are pioneers of vegetation in a :

 
 
 
 

479. Pasteurized milk is:

 
 
 
 

480. Pinus is:

 
 
 
 

481. The fern plant is:

 
 
 
 

482. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

485. Botulinum toxin effects:

 
 
 
 

486. Bacteriophage consists of:

 
 
 
 

487. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

489. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

492. Total parasites belong to:

 
 
 
 

493. Which causes red tide?

 
 
 
 

494. Facultative saprophyte is:

 
 
 
 

495. Pinus gerardiana is :

 
 
 
 

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

 
 
 
 

497. Some bacteria cannot be killed easily because of:

 
 
 
 

498. What are Cyanobacteria?

 
 
 
 

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

 
 
 
 

500.

501. First animal pathogenic virus was discovered by:

 
 
 
 

502. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

506. Cell walls of Gram-positive bacteria contain:

 
 
 
 

507. Select the wrong statement:

 
 
 
 

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

 
 
 
 

509. Bentham and Hooker placed gymnosperms:

 
 
 
 

510. Bacteria growing on synthetic medium are called:

 
 
 
 

511. The roots of Cycas are :

 
 
 
 

512. The fungi are usually:

 
 
 
 

513. Where does meiosis occur in yeast?

 
 
 
 

514. Vegetative reproduction in Cycas is by means of :

 
 
 
 

515. The fungi used as food are:

 
 
 
 

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

 
 
 
 

517. Virion refers to:

 
 
 
 

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

 
 
 
 

519. Red rot of sugarcane is caused by :

 
 
 
 

520. Helotism word is used for the symbiosis between :

 
 
 
 

521. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

523. Ovules are not found enclosed in ovary in :

 
 
 
 

524. Pseudomycelium is found in:

 
 
 
 

525. Number of capsomeres forming capsid of TMV is:

 
 
 
 

526. The plants of Funaria grow :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

529. The microsporophylls on the cone of Cycas are :

 
 
 
 

530. The genetic material of poxvirus is:

 
 
 
 

531. Detailed study of bacteriophage was made by:

 
 
 
 

532. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

534. Most of the lichens are composed of :

 
 
 
 

535. Which organisms are the oldest life forms?

 
 
 
 

536. Botulism is a:

 
 
 
 

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

 
 
 
 

538. Roots are absent in :

 
 
 
 

539. Lichens are indicators of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

542. Mycoplasma contains:

 
 
 
 

543. Bacteria are placed under:

 
 
 
 

544. Synzoospore is produced in:

 
 
 
 

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

 
 
 
 

546. The chloroplast in Ulothrix is :

 
 
 
 

547. Heterospory and ligulate leaves are a feature of:

 
 
 
 

548. Most primitive group of vascular plants are:

 
 
 
 

549. The gametophyte of fern bears:

 
 
 
 

550. Pinus microsporophyll bears:

 
 
 
 

551. Male gametophyte of Selaginella is found:

 
 
 
 

552. Smallpox is caused by:

 
 
 
 

553. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

555. In Gymnocarpeae the fruiting body is :

 
 
 
 

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

 
 
 
 

557. Enzymes are absent in:

 
 
 
 

558. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

559. In dinoflagellates, the two flagella are:

 
 
 
 

560. Which of the following have algal zone?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

564. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

566. Psilotum is:

 
 
 
 

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

 
 
 
 

568. The flagella of Chlamydomonas are:

 
 
 
 

569. The sporangium of fern contains nearly:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

573. Viroids have:

 
 
 
 

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

 
 
 
 

575. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

578. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

580. Germination of the seed of Pinus is :

 
 
 
 

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

 
 
 
 

582. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

584. Disease resistant plant varieties can be produced by :

 
 
 
 

585. Maximum diversity of life forms occurs in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

593. How a fern differs from a moss?

 
 
 
 

594. The zoospores of Ulothrix are :

 
 
 
 

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

 
 
 
 

596. Vascular tissue is found in :

 
 
 
 

597. Water-net is the name of:

 
 
 
 

598. Desired type of Cycas can be grown by:

 
 
 
 

599. Interferon is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

602. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

604. Vascular cryptogam is the term used for :

 
 
 
 

605. The disease symptom necrosis refers to :

 
 
 
 

606. Which among the following is a shrub?

 
 
 
 

607. Cap cells are found in the filament of:

 
 
 
 

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

 
 
 
 

609. In Funaria :

 
 
 
 

610. Male gametes in Dryopteris are:

 
 
 
 

611. The alga, Spirogyra are found in :

 
 
 
 

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

 
 
 
 

613. The smallest unit of classification is:

 
 
 
 

614. In Funaria, calyptra is derived from :

 
 
 
 

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

 
 
 
 

616. Transfusion tissue is present in the leaflet of:

 
 
 
 

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

 
 
 
 

618. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

620. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

622. Fruits are not found in :

 
 
 
 

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

 
 
 
 

624. Which of the following is true for viruses?

 
 
 
 

625. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

627. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

630. The middle sterile part of capsule is called:

 
 
 
 

631. Lichens form the first community in

 
 
 
 

632. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

636. Ovules are not found enclosed in ovary in :

 
 
 
 

637. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

643. Bryophyta have been placed in cryptogams because:

 
 
 
 

644. In moss, peristomial teeth are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

647. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

648. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

650. Lichens are the indicator of pollution :

 
 
 
 

651. Viruses have:

 
 
 
 

652. What is streptomycin?

 
 
 
 

653. Triple antigen injection or vaccine are for:

 
 
 
 

654. Mucilaginous canals in Cycas are found in :

 
 
 
 

655. Indusium in Dryopteris is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

658. Most common type of conjugation in Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

661. Smut of maize is caused by :

 
 
 
 

662. Bacteriophages have been used as:

 
 
 
 

663. Which of the following shows heterotrichous habit?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

667. Pteridophytes are also known as :

 
 
 
 

668. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

670. White rust of crucifers is caused by:

 
 
 
 

671. Yeast belongs to class:

 
 
 
 

672. Wine turns sour because of:

 
 
 
 

673. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

675. Agar-agar is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

679. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

681. In Cycas the fertilization is:

 
 
 
 

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

 
 
 
 

683. The megasporangium of Selaginella is:

 
 
 
 

684. Ovary is absent in :

 
 
 
 

685. What is absent in Deuteromycetes?

 
 
 
 

686. Simple polyembryony is found in :

 
 
 
 

687. Which bacteria convert nitrate into nitrogen?

 
 
 
 

688. Which is absent from the xylem of Cycas?

 
 
 
 

689. Seeds are characteristically found in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

692. Which have the largest antherozoid?

 
 
 
 

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

 
 
 
 

694. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

696. Which is a fungicide?

 
 
 
 

697. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

700. Who discovered cyanophages?

 
 
 
 

701. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

703. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

711. What is a vector?

 
 
 
 

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

 
 
 
 

713. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Which of the following is true for Selaginella?

 
 
 
 

717. Most resistant spore in bacteria is:

 
 
 
 

718. All protozoans possess:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

722. Majority of lichens are :

 
 
 
 

723. Most primitive embryophytes are placed in:

 
 
 
 

724. Which part of Riccia bears nurse cells?

 
 
 
 

725. One of the distinctive feature of Spirogyra is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

729. In moss, sporophyte is formed on:

 
 
 
 

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

 
 
 
 

731. Lichens are ecologically important because :

 
 
 
 

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

 
 
 
 

733. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

735. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

738. In a diplontic life cycle:

 
 
 
 

739. Mixed cropping helps :

 
 
 
 

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

 
 
 
 

741. Iodine is obtained from :

 
 
 
 

742. Enteric bacteria are those bacteria that live:

 
 
 
 

743. The stele of Dryopteris is a:

 
 
 
 

744. 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:

 
 
 
 

745. Cycas is:

 
 
 
 

746. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

748. Sometimes the bacterial cell is enclosed in:

 
 
 
 

749. Winged pollen grains are found in :

 
 
 
 

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

 
 
 
 

751. The leaf of Cycas shows:

 
 
 
 

752. E coli is a:

 
 
 
 

753. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

755. The ascus of yeast contains:

 
 
 
 

756. What is the role of nitrifying bacteria?

 
 
 
 

757. Late blight of potato is caused by:

 
 
 
 

758. The teeth of peristome of Funaria are :

 
 
 
 

759. In moss, calyptra is formed from:

 
 
 
 

760. Water-borne bacterial diseases are:

 
 
 
 

761. The group algae possesses representatives belonging to kingdom:

 
 
 
 

762. The sporophyte of Riccia is :

 
 
 
 

763. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

766. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

768. What are plasmids?

 
 
 
 

769. The gametophyte of fern is as:

 
 
 
 

770. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

772. Cyathia is characterized by:

 
 
 
 

773. The zygospore in Rhizopus on germination forms:

 
 
 
 

774. Reproduction in Cycas takes place by :

 
 
 
 

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

 
 
 
 

776. Vascular cryptogams is the term used for:

 
 
 
 

777. The DNA of E coli is:

 
 
 
 

778. Protozoans are considered animals because these are:

 
 
 
 

779. Bacteria differ from viruses in being sensitive to:

 
 
 
 

780. Mycoplasma was discovered by:

 
 
 
 

781. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Common phycobiont in a lichen is :

 
 
 
 

785. Little leaf disease of Brinjal is caused by:

 
 
 
 

786. Antibiotic has been extracted from :

 
 
 
 

787. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

789. Saccharomyces ludwigii ascus produces:

 
 
 
 

790. Iodine is obtained from:

 
 
 
 

791. The archegonia of Selaginella are differentiated by:

 
 
 
 

792. 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:

 
 
 
 

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

 
 
 
 

794. The spermatozoids of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

797.

798. Climbers are found in genus:

 
 
 
 

799. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

800. Heterocysts are found in :

 
 
 
 

801. The central part of Funaria axis is :

 
 
 
 

802. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

804. Which of the following lichens is harmful?

 
 
 
 

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

 
 
 
 

806. Funaria is a Bryophyta because :

 
 
 
 

807. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

810. The male gametes of Pinus are :

 
 
 
 

811. 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:

 
 
 
 

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

 
 
 
 

813. Yeast grows more rapidly in:

 
 
 
 

814. Fern plants are:

 
 
 
 

815. Circular DNA is seen in:

 
 
 
 

816. Bryophyta have a special character from other plants:

 
 
 
 

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

 
 
 
 

818. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

821. Anoxygenic photosynthesis occurs in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

826. Who discovered streptomycin?

 
 
 
 

827. In Selaginella, the microsporangia are:

 
 
 
 

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

 
 
 
 

829. Some biologists have used the term Mycetozoa for:

 
 
 
 

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

 
 
 
 

831. Woody climbers are known as :

 
 
 
 

832. Which of the following applies to Selaginella?

 
 
 
 

833. The orders generally have the uniform endings:

 
 
 
 

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

 
 
 
 

835. Which fixes atmospheric nitrogen?

 
 
 
 

836. Kuru, a human disease is caused by:

 
 
 
 

837. Green plants are classified as:

 
 
 
 

838. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

840. Amoeba is a member of the phylum:

 
 
 
 

841. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

843. Generic name of mango is:

 
 
 
 

844. Downy mildew disease is caused by :

 
 
 
 

845. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

848. Quarantine regulations are concerned with:

 
 
 
 

849. The largest alga is:

 
 
 
 

850. The prothallus of fern represents the plant:

 
 
 
 

851. Redness of red sea is due to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

856. Mycoplasma are:

 
 
 
 

857. The gametophyte produced by apospory is :

 
 
 
 

858. True sexuality is not found in:

 
 
 
 

859. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

861. John Hutchinson divided dicots into two divisions:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

864. The disease apple scab is caused by: