Quiz_Random

1. Total parasites belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. 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:

 
 
 
 

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

 
 
 
 

7. In Pteris, the roots are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Wine turns sour because of:

 
 
 
 

11. Longest known virus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Which lichen is called Reindeer moss?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. The phloem of vascular system of Cycas is :

 
 
 
 

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

 
 
 
 

20. Some bacteria cannot be killed easily because of:

 
 
 
 

21. The prothallus of fern is:

 
 
 
 

22. Aflatoxin is produced by:

 
 
 
 

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

 
 
 
 

24. Which condition is found in Cycas?

 
 
 
 

25. The largest alga is:

 
 
 
 

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

 
 
 
 

27. Heterospory and ligulate leaves are a feature of:

 
 
 
 

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

 
 
 
 

29. Fern plants are:

 
 
 
 

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

 
 
 
 

31. Soil fertility is lost by the activities of:

 
 
 
 

32. Pollination drop is:

 
 
 
 

33. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

35. What is absent in Deuteromycetes?

 
 
 
 

36. The microsporophylls on the cone of Cycas are :

 
 
 
 

37. Which is a gametophytic tissue?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. In moss, sporogenous tissue arises from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

48. Fruits are not found in :

 
 
 
 

49. Virion refers to:

 
 
 
 

50. Linnaeus is credited with introducing:

 
 
 
 

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

 
 
 
 

52. Placenta in fern is:

 
 
 
 

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

 
 
 
 

54. Ergot of rye is caused by:

 
 
 
 

55. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

57. Saccharomyces is well known for:

 
 
 
 

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

 
 
 
 

59. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

63. The gametophyte of fern bears:

 
 
 
 

64. The antherozoids of Funaria are :

 
 
 
 

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

 
 
 
 

66. Which of the following applies to Selaginella?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. The disease symptom necrosis refers to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Acetobacter is useful in:

 
 
 
 

74. Which is an edible fungus?

 
 
 
 

75. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

77. Oswald Tippo’s classification was based on :

 
 
 
 

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

 
 
 
 

79. The DNA of E coli is:

 
 
 
 

80. Desired type of Cycas can be grown by:

 
 
 
 

81. The upper region of moss capsule is :

 
 
 
 

82. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

83. The fern plant is:

 
 
 
 

84. Ethylene oxide is widely used to:

 
 
 
 

85. Lichens form the first community in

 
 
 
 

86. Most primitive embryophytes are placed in :

 
 
 
 

87. The sporophyte of Riccia is represented by :

 
 
 
 

88. Polystelic condition is found in:

 
 
 
 

89. Leaf spot of groundnut is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Cycas is similar to a mustard plant :

 
 
 
 

93. Male gametes in Dryopteris are:

 
 
 
 

94. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Early blight of potato is caused by:

 
 
 
 

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

 
 
 
 

99. Ovary is absent in :

 
 
 
 

100. Diploxylic vascular bundles are found in:

 
 
 
 

101. Black rust of wheat is caused by:

 
 
 
 

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

 
 
 
 

103. Which of the following statements is not correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. In Cycas which structure is equivalent to stamen?

 
 
 
 

108. The fungi used as food are:

 
 
 
 

109. Chemosynthetic bacteria are:

 
 
 
 

110. Who discovered heterothallism in fungi?

 
 
 
 

111. Which of the following are included in Tracheophyta?

 
 
 
 

112. Which is a redwood tree?

 
 
 
 

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

 
 
 
 

114. Ulothrix produces :

 
 
 
 

115. The sexual reproductive organs in Rhizopus are:

 
 
 
 

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

 
 
 
 

117. Which class of Protozoa includes all parasitic forms?

 
 
 
 

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

 
 
 
 

119. Pasteurization of milk involves heating for:

 
 
 
 

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

 
 
 
 

121. The fungi are mostly:

 
 
 
 

122. Streptomyces falls under:

 
 
 
 

123. Which of the following lichens is harmful?

 
 
 
 

124. The vascular bundles of Cycas stem are :

 
 
 
 

125. Rhizophore of Selaginella is:

 
 
 
 

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

 
 
 
 

127. Viruses are considered to be:

 
 
 
 

128. Endemic plants are characterised by their:

 
 
 
 

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

 
 
 
 

130. Most appropriate word for protozoans is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. To which class Riccia belongs :

 
 
 
 

141. TMV was isolated in crystalline form by:

 
 
 
 

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

 
 
 
 

143. The spermatozoids of Cycas are :

 
 
 
 

144. Red rot of sugarcane is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. The role of meiosis is for:

 
 
 
 

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

 
 
 
 

153. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

157. Interferon is a:

 
 
 
 

158. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

162. The sporangium of fern contains nearly:

 
 
 
 

163. E coli is a:

 
 
 
 

164. Photoautotrophic bacteria have:

 
 
 
 

165. The megasporangium of Selaginella is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

168. Which is not found in bacteria?

 
 
 
 

169. Redness of red sea is due to :

 
 
 
 

170. Penicillin is obtained from:

 
 
 
 

171. Fruits are not found in Cycas because:

 
 
 
 

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

 
 
 
 

173. Red rot of sugarcane is caused by :

 
 
 
 

174. Which of the following does not contain chlorophyll?

 
 
 
 

175. In Cycas microsporangia are borne on:

 
 
 
 

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

 
 
 
 

177. Azolla growing in paddy fields helps in:

 
 
 
 

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

 
 
 
 

179. Helminthosporium oryzae was the cause of disaster :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

185. The archegonia in Selaginella develop on:

 
 
 
 

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

 
 
 
 

187. 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?

 
 
 
 

188. Germination of the seed of Pinus is :

 
 
 
 

189. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

193. In Herpes virus DNA is:

 
 
 
 

194. The two conjugating gametangia of Rhizopus are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

197. Roots are absent in :

 
 
 
 

198. Spermatophyta are characterized by producing:

 
 
 
 

199. Liverworts are included in :

 
 
 
 

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

 
 
 
 

201. White rust of crucifers is caused by:

 
 
 
 

202. Winged pollen grains are found in :

 
 
 
 

203. Lichens show :

 
 
 
 

204. Ulothrix and Spirogyra are filamentous and :

 
 
 
 

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

 
 
 
 

206. Late blight of potato is caused by :

 
 
 
 

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

 
 
 
 

208. Which fixes atmospheric nitrogen?

 
 
 
 

209. Sexual reproduction of lichen is due to :

 
 
 
 

210. Select the wrong statement:

 
 
 
 

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

 
 
 
 

212. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

216. The mode of nutrition of bacteria is usually:

 
 
 
 

217. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

218. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

220. The spur of Pinus roxburghii has :

 
 
 
 

221. Sexual reproduction in Rhizopus is by:

 
 
 
 

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

 
 
 
 

223. Aflatoxin is produced as a product in :

 
 
 
 

224. In Pteris, the archegonia are present:

 
 
 
 

225. Green plants are classified as:

 
 
 
 

226. The group algae possesses representatives belonging to kingdom:

 
 
 
 

227. Which one of the following statement is wrong?

 
 
 
 

228. Viruses have:

 
 
 
 

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

 
 
 
 

230. attract the antherozoids of Funaria towards their archegonium:

 
 
 
 

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

 
 
 
 

232. Each chloroplast in Spirogyra bears :

 
 
 
 

233. Which of the following is a monocot?

 
 
 
 

234. What is the role of nitrifying bacteria?

 
 
 
 

235. Rigid cell wall and embryo formation characterise kingdom :

 
 
 
 

236. Absorptive nutrition is:

 
 
 
 

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

 
 
 
 

238. To which country Antony van Leeuwenhoek belong?

 
 
 
 

239. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

242. Which is an exception to cell theory?

 
 
 
 

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

 
 
 
 

244. Botulism is a:

 
 
 
 

245. In binomial system most of the words are:

 
 
 
 

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

 
 
 
 

247. Azolla and Salvinia both are:

 
 
 
 

248. The disease apple scab is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

252. Centric discoid form of diatom is:

 
 
 
 

253. Spirogyra differs from moss protonema in having :

 
 
 
 

254. Cycas revoluta is widely grown as :

 
 
 
 

255. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

258. LSD is:

 
 
 
 

259. Oswald Tippo’s classification is:

 
 
 
 

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

 
 
 
 

261. Lichens reproduce by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

265. Fern phloem lacks:

 
 
 
 

266. Simple polyembryony is found in :

 
 
 
 

267. The young leaves of Cycas have :

 
 
 
 

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

 
 
 
 

269. Fruiting body of lichens is :

 
 
 
 

270. What are Cyanobacteria?

 
 
 
 

271. Pollination in Pinus is :

 
 
 
 

272. The gametophyte of fern is as:

 
 
 
 

273. Standard size of a herbarium sheet is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

276. Tautonyms are illegitimate in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

282. Embryo formation is not known in :

 
 
 
 

283. Protozoans are considered animals because these are:

 
 
 
 

284. Genetic material of TMV is:

 
 
 
 

285. In Cycas the fertilization is:

 
 
 
 

286. Protistan algae obtain their food as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

291. Who discovered cyanophages?

 
 
 
 

292. Ginkgo biloba is a:

 
 
 
 

293. Gametophyte is the main plant body in :

 
 
 
 

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

 
 
 
 

295. In moss, reduction division occurs in :

 
 
 
 

296. Classification system proposed by Linnaeus was artificial because:

 
 
 
 

297. The ferns are usually found:

 
 
 
 

298. Which bacteria convert nitrate into nitrogen?

 
 
 
 

299. Yeast grows more rapidly in:

 
 
 
 

300. Mycoplasma is different from bacteria due to:

 
 
 
 

301. Proembryo in Pinus is :

 
 
 
 

302. Generic name of mango is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

308. Ergot is obtained from :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

311. Rejuvenescent cells (auxospores) occur in:

 
 
 
 

312. The leaves of Funaria are :

 
 
 
 

313. The coralloid roots are :

 
 
 
 

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

 
 
 
 

315. In dinoflagellates, the two flagella are:

 
 
 
 

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

 
 
 
 

317. Lichen show :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

320. Lichens are pioneers of vegetation in a :

 
 
 
 

321. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

326. Mycoplasma are:

 
 
 
 

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

 
 
 
 

328. Synzoospore is produced in:

 
 
 
 

329. Meristele of fern is:

 
 
 
 

330. Cellular slime mold is:

 
 
 
 

331. The fungi are usually:

 
 
 
 

332. What is special feature of fern archegonia?

 
 
 
 

333. Which part of Riccia bears nurse cells?

 
 
 
 

334. Sporophyte of fern is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

337. Kuru, a human disease is caused by:

 
 
 
 

338. 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:

 
 
 
 

339. Photosynthetic protists contribute what percentage of global photosynthesis:

 
 
 
 

340. The sporangia of Selaginella are attached:

 
 
 
 

341. What is streptomycin?

 
 
 
 

342. The roots of Cycas are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

346. Rhizopus belongs to:

 
 
 
 

347. Ovary is absent in:

 
 
 
 

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

 
 
 
 

349. Some biologists have used the term Mycetozoa for:

 
 
 
 

350. Cycas is :

 
 
 
 

351. The orders generally have the uniform endings:

 
 
 
 

352. One of the distinctive feature of Spirogyra is :

 
 
 
 

353. Which among the following is a shrub?

 
 
 
 

354. Hormogonia are the vegetative reproductive structures of :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

357. 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:

 
 
 
 

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

 
 
 
 

359. Which of the following is a parasitic algae?

 
 
 
 

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

 
 
 
 

361. The leaves of Funaria are :

 
 
 
 

362. Zoogametes are not found in:

 
 
 
 

363. Mycoplasma contains:

 
 
 
 

364. Most primitive group of vascular plants are:

 
 
 
 

365. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

369. The similarity between cyanobacteria and bacteria:

 
 
 
 

370. The leafy fern plant represents the:

 
 
 
 

371. Cryptogams include :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

375. Metulae are found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

380. Bivalved siliceous shell or frustule occur in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

383. Select the correct statement: (NEET 2016)

 
 
 
 

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

 
 
 
 

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

 
 
 
 

386. Which of the following is true for Selaginella?

 
 
 
 

387. Agar-agar is obtained from:

 
 
 
 

388. The seedless plants which possess vascular tissues are:

 
 
 
 

389. Red rot of sugarcane is caused by:

 
 
 
 

390. In Gymnocarpeae the fruiting body is :

 
 
 
 

391. The male gametes of Pinus are :

 
 
 
 

392. Nannandria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

398.

399. Disease resistant plant varieties can be produced by :

 
 
 
 

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

 
 
 
 

401. Methanogens belong to:

 
 
 
 

402. Amoeba is a member of the phylum:

 
 
 
 

403. NBG of Lucknow is now named as:

 
 
 
 

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

 
 
 
 

405. Clostridium can:

 
 
 
 

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

 
 
 
 

407. Parmelia belongs to :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

410. Yeast is a source of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

413. Why is Cycas called a living fossil?

 
 
 
 

414. Isomorphic type alternation of generation is found in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

417. Pteridophytes are also known as :

 
 
 
 

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

 
 
 
 

419. Selaginella differs from Moss in having:

 
 
 
 

420. Citrus canker is caused by :

 
 
 
 

421. Facultative saprophyte is:

 
 
 
 

422. Reserve food in Euglena is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

425. Cap cells are found in the filament of:

 
 
 
 

426. Which is the nuclear material in bacteria?

 
 
 
 

427. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

429. Seeds are characteristically found in:

 
 
 
 

430. Pythium debaryanum is the causative agent of:

 
 
 
 

431. The nucleus of bacteria is:

 
 
 
 

432. The alga, Spirogyra are found in :

 
 
 
 

433. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

435. John Hutchinson divided dicots into two divisions:

 
 
 
 

436. Psychrophilic bacteria are those bacteria that grow best:

 
 
 
 

437. The development of Selaginella embryo is:

 
 
 
 

438. Bryophyta have a special character from other plants:

 
 
 
 

439.

440. The smallest unit of classification is:

 
 
 
 

441. The chloroplast in Ulothrix is :

 
 
 
 

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

 
 
 
 

443. Water-net is the name of:

 
 
 
 

444. Multicellular and jacketed sex organs are found in :

 
 
 
 

445. The source of litmus is :

 
 
 
 

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

 
 
 
 

447. In tracheophyta:

 
 
 
 

448. Heterospory is the production of:

 
 
 
 

449. Mycoplasmas are not viruses in nature because:

 
 
 
 

450. Infective part of virus was discovered by:

 
 
 
 

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

 
 
 
 

452. Rhizoids of Riccia are :

 
 
 
 

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

 
 
 
 

454. Germ theory of disease was proposed by:

 
 
 
 

455. The archegonia of Selaginella are differentiated by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

458. Viruses are commonly transmitted in plants through:

 
 
 
 

459. All archaebacteria lack:

 
 
 
 

460. Winged seeds are found in :

 
 
 
 

461. Indusium in Dryopteris is:

 
 
 
 

462. Spermatophyta are characterized by producing:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

466. Cyanophage is a virus that attacks:

 
 
 
 

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

 
 
 
 

468. Most of the lichens are composed of :

 
 
 
 

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

 
 
 
 

470. The middle sterile part of capsule is called:

 
 
 
 

471. Anoxygenic photosynthesis occurs in:

 
 
 
 

472. The gametophyte produced by apospory is :

 
 
 
 

473. Woody climbers are known as :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

477. Detailed study of bacteriophage was made by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

480. Saccharomyces is used in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

484. Ectocarpus produces:

 
 
 
 

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

 
 
 
 

486. The plants of Funaria grow :

 
 
 
 

487. What is mycorrhiza?

 
 
 
 

488. In Gymnosperms endosperm is a:

 
 
 
 

489. Seeds are characteristically found in :

 
 
 
 

490. Pseudomycelium is found in:

 
 
 
 

491. The chief characteristic of bryophyta is that :

 
 
 
 

492. True sexuality is not found in:

 
 
 
 

493. Coenogamete is found in:

 
 
 
 

494. In Cycas:

 
 
 
 

495. Maximum diversity of life forms occurs in :

 
 
 
 

496. In moss, conducting tissue is made up of

 
 
 
 

497. Cycas plant in appearance resembles :

 
 
 
 

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

 
 
 
 

499. How a fern differs from a moss?

 
 
 
 

500. Vascular tissue is found in :

 
 
 
 

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

 
 
 
 

502. 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?

 
 
 
 

503. Which organisms are the oldest life forms?

 
 
 
 

504. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

507. Reproduction in Rhizopus is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

510. Club moss is the common name of :

 
 
 
 

511. Meiosis in Ulothrix takes place:

 
 
 
 

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

 
 
 
 

513. Which of the following are absent in Mycoplasma?

 
 
 
 

514. Pinus gerardiana is :

 
 
 
 

515. The megaspore of Selaginella on germination produces:

 
 
 
 

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

 
 
 
 

517. Smut of maize is caused by :

 
 
 
 

518. In Selaginella, the microsporangia are:

 
 
 
 

519. Which is absent from the xylem of Cycas?

 
 
 
 

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

 
 
 
 

521. Iodine is obtained from:

 
 
 
 

522. Unicellular eukaryotic organisms are placed in the kingdom:

 
 
 
 

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

 
 
 
 

524. Protists which are diploid reproduce sexually by:

 
 
 
 

525. Sporophyte of Funaria is :

 
 
 
 

526. Where does meiosis occur in yeast?

 
 
 
 

527. Iodine is obtained from :

 
 
 
 

528. The central part of Funaria axis is :

 
 
 
 

529. Leprosy is caused by:

 
 
 
 

530. Rice, pea, potato are :

 
 
 
 

531. Cleavage polyembryony is found in :

 
 
 
 

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

 
 
 
 

533. Downy mildew disease is caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

536. Most primitive embryophytes are placed in:

 
 
 
 

537. In Funaria, calyptra is derived from :

 
 
 
 

538. Which is a tautonym?

 
 
 
 

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

 
 
 
 

540. The first to isolate a plant virus was:

 
 
 
 

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

 
 
 
 

542. Facultative parasite is:

 
 
 
 

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

 
 
 
 

544. Mucilaginous canals in Cycas are found in :

 
 
 
 

545. Funaria are commonly found :

 
 
 
 

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

 
 
 
 

547. Transfusion tissue is present in the leaflet of:

 
 
 
 

548. Vascular cryptogam is the term used for :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

551. The order generally ends with:

 
 
 
 

552. Lichens are ecologically important because :

 
 
 
 

553. Most of the algae are :

 
 
 
 

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

 
 
 
 

555. Amphiphloeic siphonostele develops in rhizome of:

 
 
 
 

556. Most primitive kind of flower is represented by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

559. Number of capsomeres forming capsid of TMV is:

 
 
 
 

560. Fairy ring is the name given to:

 
 
 
 

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

 
 
 
 

562. In moss, calyptra is formed from:

 
 
 
 

563. Which of the following is true for viruses?

 
 
 
 

564. Club moss and Peat moss belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

567. Funaria is :

 
 
 
 

568. Which of the following are included in Tracheophyta?

 
 
 
 

569. The most primitive vascular plants is:

 
 
 
 

570. The smallest bacterium is:

 
 
 
 

571. In moss, peristomial teeth are:

 
 
 
 

572. Which have the largest antherozoid?

 
 
 
 

573. Psilotum is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

576. Ovules are not found enclosed in ovary of:

 
 
 
 

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

 
 
 
 

578. In a bacteriophage, DNA is present in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

582. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

584. Who among the following discovered virus?

 
 
 
 

585. Fern prothallus is:

 
 
 
 

586. Bacteriophage consists of:

 
 
 
 

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

 
 
 
 

588. Majority of lichens are :

 
 
 
 

589. Etiology includes the study of :

 
 
 
 

590. Nitrogen-fixing bacteria may be located:

 
 
 
 

591. Viroids have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

594. . Tapetum develops in:

 
 
 
 

595. Rhizopus and yeast are usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

598. Citrus canker is caused by:

 
 
 
 

599. Cocci types of bacteria are:

 
 
 
 

600. 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:

 
 
 
 

601. The flagella of Chlamydomonas are:

 
 
 
 

602. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

604. Most common type of conjugation in Spirogyra is :

 
 
 
 

605. Streptomycin is obtained from:

 
 
 
 

606. Ulothrix and Spirogyra reproduce vegetatively by :

 
 
 
 

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

 
 
 
 

608. The ascus of yeast contains:

 
 
 
 

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

 
 
 
 

610. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

612. Saccharomyces ludwigii ascus produces:

 
 
 
 

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

 
 
 
 

614. Funaria is a Bryophyta because :

 
 
 
 

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

 
 
 
 

616. The chief characteristic of class Ascomycetes is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

620. The Rhizopus gametes are formed in:

 
 
 
 

621.

 

622. Cycas is different from mango in :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

625. Siphonogamy is found in:

 
 
 
 

626. Pinus microsporophyll bears:

 
 
 
 

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

 
 
 
 

628. ‘Diatomaceous Earth’ is deposition of:

 
 
 
 

629. Lichens reproduce by :

 
 
 
 

630. Bacteria which are spherical are called:

 
 
 
 

631. Fern prothallus produces:

 
 
 
 

632. Spirogyra represents the :

 
 
 
 

633. Yeast belongs to class:

 
 
 
 

634. Mostly type of zygospore in Ulothrix is:

 
 
 
 

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

 
 
 
 

636. The chloroplast of Chlamydomonas are:

 
 
 
 

637. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

639. Gram stain is used to:

 
 
 
 

640. Green plants are classified as :

 
 
 
 

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

 
 
 
 

642. The sori in Dryopteris are found on:

 
 
 
 

643. All protozoans possess:

 
 
 
 

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

 
 
 
 

645. Small epidermal swellings due to infection are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

649. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

651. Which of the following converts CO₂ into carbohydrates?

 
 
 
 

652. Bacteria growing on synthetic medium are called:

 
 
 
 

653. In angiosperms double fertilization represents:

 
 
 
 

654. In moss, sporophyte is formed on:

 
 
 
 

655. Sleeping sickness disease in man is caused by:

 
 
 
 

656. The tallest moss in the world is :

 
 
 
 

657. The leaf of Cycas shows:

 
 
 
 

658. Banana bunchy top is caused by :

 
 
 
 

659. Lichens are the indicator of pollution :

 
 
 
 

660. Common phycobiont in a lichen is :

 
 
 
 

661. The development of sporangium in Selaginella is:

 
 
 
 

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

 
 
 
 

663. Most resistant spore in bacteria is:

 
 
 
 

664. Which is the correct statement about Selaginella?

 
 
 
 

665. Bacteriophages have been used as:

 
 
 
 

666. All algae have:

 
 
 
 

667. The lambda phase is a:

 
 
 
 

668. Which of the following have algal zone?

 
 
 
 

669. Pteridophyta are also called:

 
 
 
 

670. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

672. An Hfr bacterium is one that contains:

 
 
 
 

673. What are plasmids?

 
 
 
 

674. The lichens growing on rocks are called :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

677. Enzymes are absent in:

 
 
 
 

678. Heterosporous pteridophytes always form:

 
 
 
 

679. Embryophyta includes:

 
 
 
 

680. Quarantine regulations are concerned with:

 
 
 
 

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

 
 
 
 

682. Lichens are indicators of :

 
 
 
 

683. Which of the following have a prokaryotic cell?

 
 
 
 

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

 
 
 
 

685. Economic importance of bacteria lies in their being:

 
 
 
 

686. Cell walls of Gram-positive bacteria contain:

 
 
 
 

687. Antibiotic has been extracted from :

 
 
 
 

688. Who named prion?

 
 
 
 

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

 
 
 
 

690. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

692. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

694. Vascular cryptogams is the term used for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

697. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

699. Photosynthetic protists belong to:

 
 
 
 

700. Spores of which plants have chloroplast:

 
 
 
 

701. Cyathia is characterized by:

 
 
 
 

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

 
 
 
 

703. Broad spectrum antibiotic is, which:

 
 
 
 

704. In a diplontic life cycle:

 
 
 
 

705. The genetic material of poxvirus is:

 
 
 
 

706. Heterotrichous habit means :

 
 
 
 

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

 
 
 
 

708. The stele of Dryopteris is a:

 
 
 
 

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

 
 
 
 

710. Reproduction in Cycas takes place by :

 
 
 
 

711. Choose the correct statement about Spirogyra:

 
 
 
 

712. The sporangiophores in Rhizopus are:

 
 
 
 

713. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

716. Pasteur is famous for his:

 
 
 
 

717. ‘Snakes of Plant Kingdom’ is:

 
 
 
 

718. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

720. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

722.

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

 
 
 
 

724. Pollination in Cycas takes place by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

733. 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?

 
 
 
 

734. Which is a fungicide?

 
 
 
 

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

 
 
 
 

736. Male gametophyte of Selaginella is found:

 
 
 
 

737. Which one of the following is a monocot?

 
 
 
 

738. Asexual reproductive body of Volvox is called:

 
 
 
 

739. In moss, stomata are found:

 
 
 
 

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

 
 
 
 

741. The prothallus of fern represents the plant:

 
 
 
 

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

 
 
 
 

743. Bacteria differ from viruses in being sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

749. Gymnosperms could also be called as:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

753. Extremely reduced gametophyte in plant kingdom is:

 
 
 
 

754. Acellular slime mold is/are:

 
 
 
 

755. The fungi that grow on wood are called:

 
 
 
 

756. Fertility of the soil is increased by:

 
 
 
 

757. Who discovered streptomycin?

 
 
 
 

758. Black rust of wheat is caused by:

 
 
 
 

759. Which of the following is sago palm?

 
 
 
 

760. ‘Snakes of Plant Kingdom’ is :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

763. Embryophyta includes :

 
 
 
 

764. Discovery of penicillin was based on:

 
 
 
 

765. Heterocysts are found in :

 
 
 
 

766. 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:

 
 
 
 

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

 
 
 
 

768. The rhizoids of Funaria are :

 
 
 
 

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

 
 
 
 

770. Which bacteria convert NO₃ to elemental nitrogen?

 
 
 
 

771. How is moss different from fern?

 
 
 
 

772. The term stele was given by:

 
 
 
 

773. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

774. Select the wrong statement:

 
 
 
 

775. The tree fern is:

 
 
 
 

776. Bentham and Hooker placed gymnosperms:

 
 
 
 

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

 
 
 
 

778. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

780. Bryophyta have been placed in cryptogams because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

784. Bacteria were first discovered by:

 
 
 
 

785. The truncated cone of HIV consists of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

791. The chromosomal number in:

 
 
 
 

792. Cycas is:

 
 
 
 

793. The zoospores of Ulothrix are :

 
 
 
 

794. Funaria is :

 
 
 
 

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

 
 
 
 

796. The gametophyte of moss has distinct phases :

 
 
 
 

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

 
 
 
 

798. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

800. Virus and bacteriophage are made-up of:

 
 
 
 

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

 
 
 
 

802. Chief constituents of bordeaux mixture are :

 
 
 
 

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

 
 
 
 

804. Vegetative reproduction in Cycas is by means of :

 
 
 
 

805. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

806. The most important property of yeast is:

 
 
 
 

807. The teeth of peristome of Funaria are :

 
 
 
 

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

 
 
 
 

809. Fruits are not found in:

 
 
 
 

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

 
 
 
 

811. Sometimes the bacterial cell is enclosed in:

 
 
 
 

812. What is a vector?

 
 
 
 

813. Smallpox is caused by:

 
 
 
 

814. Pinus is:

 
 
 
 

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

 
 
 
 

816. A gill of Agaricus:

 
 
 
 

817. Which of the following shows heterotrichous habit?

 
 
 
 

818. In Funaria :

 
 
 
 

819. The mycelium of Rhizopus is:

 
 
 
 

820. First animal pathogenic virus was discovered by:

 
 
 
 

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

 
 
 
 

822. An alga which is rich in proteins:

 
 
 
 

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

 
 
 
 

824. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

826. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

830. The sporophyte of Riccia is :

 
 
 
 

831. Which group of algae have an incipient nucleus?

 
 
 
 

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

 
 
 
 

833. Special feature of pollen grains of Pinus is :

 
 
 
 

834. Plasmids are:

 
 
 
 

835. Funaria can be differentiated from Cycas :

 
 
 
 

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

 
 
 
 

837. The zygospore in Rhizopus on germination forms:

 
 
 
 

838. The photosynthetic protists are:

 
 
 
 

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

 
 
 
 

840. Which causes red tide?

 
 
 
 

841. Penicillin was discovered by:

 
 
 
 

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

 
 
 
 

843. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

845. Which of the following is a heterosporous pteridophyte?

 
 
 
 

846. Among the algae kelps are :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

850. Mixed cropping helps :

 
 
 
 

851. Ovules are not found enclosed in ovary in :

 
 
 
 

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

 
 
 
 

853. Late blight of potato is caused by:

 
 
 
 

854. Climbers are found in genus:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

857. The Rhizopus is:

 
 
 
 

858. Pythium debaryanum is the causative agent of:

 
 
 
 

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

 
 
 
 

860. Helotism word is used for the symbiosis between :

 
 
 
 

861. Water bloom is generally caused by :

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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