InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Haploids are used for studting .A. Recessive mutationB. Somaclonal variationC. Somatic hydridizationD. None of these |
| Answer» Correct Answer - A | |
| 152. |
Picking up plants with superior phenotype ofr fugther propagation isA. pureline selectionB. mass selectionC. hybrid vigourD. introduction |
| Answer» Correct Answer - B | |
| 153. |
Reproducing new plants by cells instead of seeds is known asA. BiofertilizersB. Tissue cultureC. AntibiosisD. Mutation |
| Answer» Correct Answer - B | |
| 154. |
Limitation of mutation breeding is:A. LethalityB. Undersired mutationC. Recessive nature of mutationD. All of the above |
| Answer» Correct Answer - D | |
| 155. |
Mutation is :A. Always bneficialB. Usually beneficialC. Occasionally beneficialD. None of these |
| Answer» Correct Answer - C | |
| 156. |
Disease free plants can be produced from a viral infected diseased plntt through:A. Protoplast cultureB. Meristem cultuerC. Pollen cultureD. Embryo culture |
| Answer» Correct Answer - B | |
| 157. |
Diseas resistance in plants can be ineduced by:A. MutationB. Proper manuringC. Breeding with wild relativesD. Early sowing |
| Answer» Correct Answer - C | |
| 158. |
Disease free plants can be produced from a viral infected diseased plntt through:A. Merstem cultureB. HybridizationC. Sexual reproductionD. None of these |
| Answer» Correct Answer - A | |
| 159. |
Early agriculture was cultivation of plants for:A. Vegetative parts onlyB. Flowers and fruits onlyC. Seeds onlyD. None of these |
| Answer» Correct Answer - A | |
| 160. |
Most of the early cultivated plants:A. WheatB. RiceC. MaizeD. Wheat, rice , maize,barley |
| Answer» Correct Answer - D | |
| 161. |
Which of the following methods in not used for crop improvement?A. InbreedingB. HybridzationC. Tissue caltureD. Genetic engineering |
| Answer» Correct Answer - A | |
| 162. |
The genes for resistance located in wild species can be brought into single hybrid individual via……………..A. selectionB. intervarietal hybridisationC. interspecific hybridisationD. Both (a) and ( c) |
| Answer» Correct Answer - C | |
| 163. |
Process of cultivation of wild plants to fulfil human need is called:A. AcclimatizationB. SelectionC. DomesticationD. None of these |
| Answer» Correct Answer - C | |
| 164. |
Emasculation is needed during:A. Tissue cultureB. Transgenic plant productionC. Breeding experimentsD. Vegetative propagation |
| Answer» Correct Answer - C | |
| 165. |
Oldest among the cultivated plans:A. Paddy (Oryza sativa)B. Wheat (Triticum durum)C. Rey (Secale cereale)D. Barley (Hordium vulgare) |
| Answer» Correct Answer - D | |
| 166. |
Heterosis result in an increase in yield upto:A. `200-300%`B. `300-400%`C. `400-500%`D. `100%` only |
| Answer» Correct Answer - A | |
| 167. |
Triploids do not develop:A. Fertile gametesB. SeedsC. EmbryoD. All of these |
| Answer» Correct Answer - D | |
| 168. |
High tyielding variety of maize is a:A. TriploidB. HexaploidC. HybridD. Mutant |
| Answer» Correct Answer - C | |
| 169. |
First man made cereal is:A. Secale cerealeB. TriticaleC. Triticum aestivumD. Mixican dwarf, high yielding wheat |
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Answer» Correct Answer - B First man made cereal is Triticale, produced by hybridization between Triricum and Secale cereale (Rye). Triricale is produced by hybridization between Triticum durum (4n) and Secale cereale (2n) and then it is a hexaploid Triticale. When it is produced by hybridization between Triticum aestivum and Secale cereale, it is octoploid in nature. |
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| 170. |
Shakti, rattan and protina are three important lysine rich varieties ofA. riceB. pulsesC. wheatD. maize |
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Answer» Correct Answer - D Shakti, Ratna and Protina are recently developed composite (germplasm complex) varieties of maize, which have a higher lysine and tryptophan content than tradiational maize varieties. |
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| 171. |
A man made allopolypoid cereal crop isA. Hordeum vulgareB. TriticaleC. Raphanus brassicaD. Zen mays |
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Answer» Correct Answer - B Allopolyploid means a mixture of two different genetic forms, integeneric hybridisation of cerel crops Triticale is first man-made allopolyploid cereal crop. |
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| 172. |
A crop surviving only as a result of man made interest:A. MaizeB. BarleyC. WheatD. Paddy |
| Answer» Correct Answer - A | |
| 173. |
A crop grown by transplantions:A. MaizeB. SugaraneC. PaddyD. Rye |
| Answer» Correct Answer - C | |
| 174. |
Which blue-green algate is used as food?A. SpirulinaB. AnabaenaC. NostocD. Phormidium |
| Answer» Correct Answer - A | |
| 175. |
An artificial seed is raised fromA. meristmeB. root tipC. somatic embryoD. immature seed |
| Answer» Correct Answer - D | |
| 176. |
Ionic concentration in calculate medium is manintained by:A. Mixture of inorganic salts added in mediumB. SucroseC. Auxins and cytokinisD. None of the above |
| Answer» Correct Answer - A | |
| 177. |
pH of culture medium should range between:A. 5.5 to 6.5B. 7.2 to 7.5C. 7.5 to 8.5D. 8.5 to 9.0 |
| Answer» Correct Answer - A | |
| 178. |
Giegor johann Mendel was a:A. Polcular biologistB. BiotechnologistC. Plant breederD. None of these |
| Answer» Correct Answer - C | |
| 179. |
Hybrids are produced by crossing individuals belonging to:A. Same speciesB. Same genusC. Different species and generaD. All of the above |
| Answer» Correct Answer - B | |
| 180. |
Norion 10 produced by crossing betweenA. Daruma x FultzB. Fultz-Daruma x Turkey RedC. Gainless x Locals of JapanD. Locals x Gainless |
| Answer» Correct Answer - B | |
| 181. |
The high yielding wheat varieties produced as a result of secondary introduction isA. TN-28B. SonalikaC. PV-14D. None of these |
| Answer» Correct Answer - B | |
| 182. |
The hybrid varieties of wheat areA. GouraniB. High gateC. Both (a) and (b)D. NP-170 |
| Answer» Correct Answer - D | |
| 183. |
The semidwarf wheat varieties introduced by ICAR in 1963 areA. SonalikaB. Kalyan SonaC. IR-8D. Both (a) and (b) |
| Answer» Correct Answer - D | |
| 184. |
Sometic hybridization is a technique of:A. Natural breedingB. Natural pollinationC. Artificial pollinationD. Somatic cell hybridization |
| Answer» Correct Answer - D | |
| 185. |
Which of the following enhances or induces fusion of protoplastsA. Sodium chloride and potassium chlorideB. Polyethylene glycol and sodium nitrateC. IAA and gibberellinsD. IAA and gibberellins |
| Answer» Correct Answer - B | |
| 186. |
Which of the following enhances or induces fusion of protoplastsA. Sodium chloride and potassium chlorideB. Polyethylene glycol and sodium nitrateC. IAA and kinetinD. IAA and gibberellins |
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Answer» Correct Answer - B Polyethylene Glycol (PEG) and sodium nitrate enhances fusion of protoplasts (protoplast fusion),Protoplast fustion is a physical phenomen which occurs due to the fusion is a physical phenomen which occurs due to the fusion of proplast (cell without cell wall) of two more cells. It can be done by mechnaically (spontaneous) or by inducing agents. (i) Spontaneous agents Mechanical fustion (ii) Induciing agents `NaNO_(3)` treatment. (iii) High pH or `Ca^(2+)` treatment. (iv) PEG treatment (v) Electrofusion |
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| 187. |
Assertion: Decreases in heterozygosity reduces the performance of cross-pollinated crops. Reason: Decrease in heterozygosity enhances the performance of self-pollinated crops.A. Both Assertion and Reason are true and Reason is correct explanation of Assertion.B. Both Assertion and Reason are true, but reason is not the correct explanation of AssertionC. Assertion is true, but the Reason is falseD. Assertion is false, but the Reason is true |
| Answer» Correct Answer - C | |
| 188. |
Better-yielding semi-dwarf varieties Jaya and Ratna were developed in India in :A. WheatB. RiceC. MaizeD. Sugarcane |
| Answer» Correct Answer - B | |
| 189. |
Cybridization gives new recombinations of:A. Cytoplasmic genesB. Nuclear genomeC. PlasmidsD. None of these |
| Answer» Correct Answer - A | |
| 190. |
Cybrids carry genome of:A. Only one parentB. Both the parentsC. Fusion of genomes of both the parentsD. no genome |
| Answer» Correct Answer - A | |
| 191. |
Heterokaryocytes have:A. A diploid nuclesB. A haploid nucleusC. Two haploid muclei in fusion stateD. Two haploid nuclei without showing nuclear fusion |
| Answer» Correct Answer - D | |
| 192. |
Inuced partenogenesis results in development of:A. Haploid plantsB. Diploid plants from haploid callusC. Haploid callus from diploid tissueD. None of the above |
| Answer» Correct Answer - A | |
| 193. |
Which of the following is a bacterial blight resistant variety of cowpea?A. Pusa ShubraB. HimgiriC. Pusa KomalD. Pusa Swamin |
| Answer» Correct Answer - C | |
| 194. |
Which of the following is a strategy to resist maize stem borers?A. High aspartic acidB. High sugar contentC. Low nitrogenD. All of these |
| Answer» Correct Answer - D | |
| 195. |
Pusa Gaurav is Brassica vareity resistant toA. aphidsB. fruit borersC. shoot borersD. jassids |
| Answer» Correct Answer - A | |
| 196. |
Pusa swarnim a variety of Brassica resistant toA. white rustB. leaf stripC. soft rotD. blight |
| Answer» Correct Answer - A | |
| 197. |
What name has been assigned to the genus produced by a cross between cabbage and radishA. SecaleB. Bursa pastorisC. LysogenicophyllD. Raphanobrassica |
| Answer» Correct Answer - D | |
| 198. |
First somatic hybrid was produced byA. Carlson and coworkersB. Skoog and coworkersC. Cocking and coworkersD. Gamburg and coworkers |
| Answer» Correct Answer - A | |
| 199. |
Pioidy level of cullus can be changed using clohicine in culture medium:A. Befor differentiationB. After root rormationC. After shoot formationD. After formation of plantlets |
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Answer» Correct Answer - A Colchicine is called artificial polyploidizing agnet. It is used for chromosomal doubling. A haploid cell can be converted to diploid cell and thereafter tetraploid cell by colchicine treatment. A callus produced by pollen culture is haploid. If it is treated with colchicine diploid callus is produced. This diploid allus will then be converted to tetraploid callus or octoploid callus by further givein treatment of colchicine while growing on culture medium. Thus the ploidy level of callus can be converted from haploid to diploid then to tetraploid or octaploid, as per need. All such calli will carry homozygous character (pure line). |
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| 200. |
Tissue culture technique has been successfully used for producing:A. Alcoholic beveragesB. CheeseC. Shikonin (-a dye)D. Insulin |
| Answer» Correct Answer - C | |