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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. |
Axenic culture is best defined asA. Cell culturesB. Cell cultures free from micro-organismsC. Cell cultures of insectivorous plantsD. Cell cultures free from other micro-organisms |
| Answer» Correct Answer - D | |
| 152. |
Inbreding depression is overcome by employingA. out-crossingB. cross-breedingC. interspecific hybridisationD. infraspecific hybridisation |
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Answer» Correct Answer - A Inbreeding depression is overcome by employing out crossing |
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| 153. |
Which one of the following products of apiculture is used is cosmetics and polishes?A. royal jellyB. waxC. honeyD. Both A and B |
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Answer» Correct Answer - B Wax is used in cosmetics and polishes. |
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| 154. |
Which one of the following products of apiculture is used is cosmetics and polishes?A. HoneyB. OilC. WaxD. Royal jelly |
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Answer» Correct Answer - C Abdominal glands of worker bees produce a secretion from which beewax is made. It is a product of industrial importance. It is used in the manufacture of many items like cosmetics, having cream, face cream, plaster, pencils, electri goods, toothpaste, lotions, furniture-polishes, boot-polishes, protectivity coating, ink paints and candles. |
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| 155. |
A collection of all the alleles of all the genes of a crop plant is calledA. germplasm collectionB. protoplasm collectionC. herbariumD. Somaclonal collection |
| Answer» Correct Answer - A | |
| 156. |
Name the crop which had its birth place in Tropical America but now the centre of production is Mid-west USAA. MaizeB. CocoaC. PineappleD. Oil palm |
| Answer» Correct Answer - A | |
| 157. |
Which of the following crops originated in Peru and Brazil but is now mainly grown in IndiaA. MaizeB. PotatoC. GroundnutD. None of these |
| Answer» Correct Answer - C | |
| 158. |
The genetically engineered crop which has been recently introduced in India isA. Herbicide tolerant maizeB. Bt cottonC. Slow ripening tomatoD. Goldent rice |
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Answer» Correct Answer - B In India only one transgenic crop, Bt cotton has so far been released for cultivation.Recently in March 2002.This has been released for cultivation.Recently in March 2002.This has been developed by Maharastra hybrid seeds company (MAHYCO) is collaboration with USA company Monsanto. |
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| 159. |
The famous cultivated plant which developed in China isA. OrangeB. TeaC. CoffeeD. Cotton |
| Answer» Correct Answer - B | |
| 160. |
Assertion. One of the major crops that originated in the new world is wheat. Reason. Wheat is cultivated in large scale in Central Asia.A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.C. If Assertion is true but the Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - D | |
| 161. |
Assertion. Seeds and plant samples of only genetically superior and cultivated species are introduced from one country to another. Reason. The cultivated species find a direct use in the crop improvement programmes of the importing country.A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.C. If Assertion is true but the Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - D | |
| 162. |
Explant is required to be disinfected before placing in culture. This is done byA. autoclavingB. ultra-violet raysC. clorax or-hypochloriteD. X-rays |
| Answer» Correct Answer - C | |
| 163. |
An explant isA. dead plantB. part of the plantsC. part of the plant used in tissue cultureD. part of the plant that expresses a specific gene |
| Answer» Correct Answer - C | |
| 164. |
Alongwith auxin, another hormone is used in culture technique. It isA. GibberellinB. CytokininC. EthyleneD. ABA |
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Answer» Correct Answer - B Along with auxi, another hormone is used in culture technique is cytokinin. |
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| 165. |
Which of the following is not correct about plant introductions ?A. They give us cropsB. They give us new varietiesC. There is rist of entry of disease, etc. into the countryD. Quarantine is not necessary |
| Answer» Correct Answer - D | |
| 166. |
Shoot regeneration is promoted by a . . . . . . . . . . . . whereas . . . . . . . . . . . . . regeneration is promoted by an auxin. |
| Answer» Correct Answer - cytokinin,root | |
| 167. |
Assertion : Phenotypic superiority of hybrid over either of its parents in one or more traits is termed hybrid vigour. Reason : Suppression of expression of recessive harmful genes occurs in heterozygotes.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertionC. If assertion is true bur reason is false.D. if both assertion and reason are false. |
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Answer» Correct Answer - A Plant breeding exploits the phenomenon of hybrid vigour or heterosis. It is the phenotypic superiority of the hybrids over either of its parents in one or more traits. These hybrids generally have greater strength and resistance to disease and larger life span than either parents. This may be due to supperssion of expression of harmful recessive genes that are expressed only in homozygous conditions. |
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| 168. |
The technique that was employed to produce haploids of Datura was Or For production of haploids, we cultureA. Meristerm cultureB. Anther cultureC. Embryo cultureD. Protoplast culture |
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Answer» Correct Answer - B Haploids have a single genome as found in the gametes of the species.A haploid has only one copy to each chromosome and is highly sterile. |
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| 169. |
. . . . . . . . . . . . . . . . . . . . . . . . . are cultured to obtain haploids |
| Answer» Correct Answer - pollen grains | |
| 170. |
What is a suspension culture ? |
| Answer» Culture of single cells and small groups of cells suspended in a liquid medium is called suspension culture. | |
| 171. |
What is totipotency ? |
| Answer» Ability of a plant cell to give rise to a complete plant is called totipotency. | |
| 172. |
What is the common name of Triticum monococcum ? |
| Answer» Domesticated Einkorn wheat. | |
| 173. |
Which of the following shows the correct sequence of steps of plants tissue culture ?A. Sterilisation `rarr` Hardening `rarr` Selection of explant `rarr` Inoculation `rarr` Regeneration `rarr` Plantlet transferB. Selection of explant `rarr` Inoculation `rarr` Regeneration `rarr` Sterilisation `rarr` Hardening `rarr` Plantlet transferC. Selection of explant `rarr` Sterilisation `rarr` Inoculation `rarr` Regeneration `rarr` Hardening `rarr` Plantlet transferD. Hardening `rarr` Sterilisation `rarr` Selection of explant `rarr` Inoculation `rarr` Regeneration `rarr` Plantlet transfer |
| Answer» Correct Answer - C | |
| 174. |
Match column I with column II and select the correct answer from the given codes. `{:(,"Column I",,"Column II"),(A.,"Wax",(i),"Interspecific hybridisation"),(B.,"Pollinator",(ii),"Micropopagation"),(C.,"Mule",(iii),"Bee"),(D.,"Tissue culture",(iv),"Apiculture"):}`A. A-(iii), B-(i), C-(ii), D-(iv)B. A-(iv), B-(iii), C-(i), D-(ii)C. A-(ii), B-(i),C-(iii),D-(iv)D. A-(iv), B-(i), C-(iii), D-(ii) |
| Answer» Correct Answer - B | |
| 175. |
The young chicken raised specially for meat are called.A. BroilersB. CockerelsC. pulletsD. hens |
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Answer» Correct Answer - A The young chicken raised specifically for meat are called broilers. |
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| 176. |
Which of the following is example of cross-breed ?A. MuleB. HilsaC. HisardaleD. Sahiwal |
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Answer» Correct Answer - C Hisardale is cross breed of sheep developed in punjab by crossing Bikaneri ewes and rams. |
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| 177. |
The callus and . . . . . . . . . . cultures can be used to achieve cell biomass. |
| Answer» Correct Answer - suspension | |
| 178. |
The Nobel Lauerate, who developed semi-dwarf wheat varieties in Mexico wasA. Norman E. BorlaugB. Herbert BoyerC. William HarveyD. Typhoid Mary |
| Answer» Correct Answer - A | |
| 179. |
Crossing of individuala of two different species to produce a hybride is calledA. intersepcific hybridisationB. intervarietal hybridisationC. intergeneric hybridisationD. intravarietal hybridisation. |
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Answer» Correct Answer - A In interspecific hydridisation, a species is mated with a different related species of the same genus. Interspecific hybrids are generally difficult to produce, but they are important in plant breeding, particularly in breeding for disease resistance. This is also called intrageneric hybridisation |
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| 180. |
Which is the best breeding method for animals that are below average is production ?A. Interspecific hybridizationB. cross breedingC. out breedingD. out crossing |
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Answer» Correct Answer - D Out-crossing is the best method for animals that are below average in productivity in milk production and growth rate in beef-cattle |
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| 181. |
__________is the agriculture practice of breeding and raising livestook |
| Answer» Correct Answer - Animal husbandary | |
| 182. |
Probiotics areA. cancer inducing microbesB. safe antinioticsC. food allergensD. live microbial food supplements |
| Answer» Correct Answer - D | |
| 183. |
Direction : Carefully read the following information to answer Q.no.1 and Q.no.2 An egg farmer is experimetnting with different feed rations with the aim of increasing his production whilst reducing the cost of the feed per egg produced. The data from two feeding experiments is given below. Which feed composition give the least cost per egg produced ?A. `{:("Protein (concentration (%)",,"Total vitamin level" (mg//kg)),(16,,100):}`B. `{:("Protein (concentration (%)",,"Total vitamin level" (mg//kg)),(14,,50):}`C. `{:("Protein (concentration (%)",,"Total vitamin level" (mg//kg)),(14,,100):}`D. `{:("Protein (concentration (%)",,"Total vitamin level" (mg//kg)),(14,,150):}` |
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Answer» Correct Answer - D In experiment 1, cost per egg produced from different protein concentrations can be calculated as follows: Cost per egg `= ("Cost of feed per 100 hens per day")/("Number of eggs per 100 hens per day")` The calculations show that the cost per egg for different protein concentrations is `0.085, 0.100, 0.100, 0.100, 0.109` and `0.112` respectively. Similarly in experiment 2, cost per egg is found to be `0.114, 0.103, 0.100, 0.097, 0.094, 0.097` and `0.100` respectively with increased vitamin level. Hence, on analysing the given experimental results, it becomes clear that least cost per egg in incurred in feed with `10%` protein concentration and vitamin level at `100 mg//kg` but out of the given options, option (d) i.e., feed ration with `14%` protein concentration and `150 mg//kg` vitamin level gives the least cost per egg i.e., `0.094`. |
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| 184. |
A certain type of grass has a diploid chromosome number of 8. A similar species of grass has a diploid chromosome number of 10. Interspecific hybridisation between the two species results in sterile hybrids that can, nonetheles, reproduce vegetatively. The diploid chromosome number of these hybrids would beA. 9B. 16C. 18D. 20 |
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Answer» Correct Answer - A The cross between these species can be represented as follows: `{:("Grass A",,"Grass B",),((2n=8),,(2n=10),),(" "darr,," "darr,),("Gametes",,"Gametes",),((n-4),,(n=5),),(," "xx,,),(," "darr,,),(,"Sterile hybrid",,),(," "(2n=9),,):}` |
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| 185. |
Name the scientist who first of all develop semidwarf variety of wheat |
| Answer» Correct Answer - Norman E. Borlaug | |
| 186. |
Which one of the following substance is responsible for formationA. 2,4-DB. NAAC. BAPD. PEG |
| Answer» Correct Answer - A | |
| 187. |
Who gave the idea that every plant cell is totipotentA. P.R. WhiteB. E.C. CockingC. F.C. StewardD. G.Harberlandt |
| Answer» Correct Answer - D | |
| 188. |
Lymphoid lenosis in a poultry is a:A. BacteriumB. virusC. FungusD. Helminth |
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Answer» Correct Answer - B Lymphoid leucosis disease of poultry is caused by virus. |
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| 189. |
Which of the following combination would a sugarcane farmer look for in the sugarcane crop ?A. Thick stem, long internodes, high sugar content and disease resistantB. Thick stem, high sugar content and profuse floweringC. Thick stem, short internodes, high sugar content disease resistantD. Thick stem. Low sugar content, disease resistant |
| Answer» Correct Answer - A | |
| 190. |
Which one of the following combination would a sugarcane farmer look for in the sugarcane cropA. Thick stem, long internodes , high sugar content and disease resistantB. Thick stem, high sugar content and profuse floweringC. Thick stem, short internodes , high sugar content, disease resistantD. Thick stem, low sugar content, disease resistant |
| Answer» Correct Answer - A | |
| 191. |
A semi-dwarf variety of wheat isA. SonalikaB. IR-8C. TriticumD. Saccharum |
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Answer» Correct Answer - A A semi-dwarf variety of wheat is sonalika. |
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| 192. |
Breeding crops for improved nutritional quality is referred to asA. BiosprospectingB. BiomagnificationC. BiofortificationD. Bioremediation |
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Answer» Correct Answer - C Breeding crops for improved nutritional quality is referred to as biofortification. |
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| 193. |
Fish introduced in india by foreigners isA. Labeo rohitaB. mystus singhalaC. pomfretD. clarius batrachus |
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Answer» Correct Answer - C Fish introduced in india by foreigners is pomfret. |
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| 194. |
The term strain has a similar meaning for the pathogen as line has for the . . . . . . . . . . . |
| Answer» Correct Answer - host | |
| 195. |
A viral diseases of polutry isA. CoryzaB. New Castle diseaseC. PasteurellosisD. Salmonellosis |
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Answer» Correct Answer - B A viral disease of polutry is New Castle disease. |
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| 196. |
Probuitics areA. Live microbial food supplementB. cancer inducing microbesC. new kind of food allergensD. Safe antibiotics |
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Answer» Correct Answer - A Probiotics are live microbial food supplement. |
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| 197. |
Assertion : In breeding increases homozygosity exposing harmful recessive genes, some of which are eliminated by selection. Reason : Continued inbreeding reduces fertility and productivity.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false |
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Answer» Correct Answer - B Inbreeding increases homozygosity exposing harmful recessive genes, some of which are eliminated by selection. Continued inbreeding reduces fertility and productivity. |
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| 198. |
HD-1553 is the variety ofA. WheatB. RiceC. MaizeD. Pea |
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Answer» Correct Answer - A HD-1553 (sonalika) is the variety of wheat. |
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| 199. |
The derivatives of IR-8 and Taichung Native I were introduced InA. 1950B. 1960C. 1966D. 1962 |
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Answer» Correct Answer - C The derivitative of IR-8 and Taichung Native I were introduction in 1966. |
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| 200. |
Which chemical is used for induction of polyploidy ?A. CytokinimB. Nitrous acidC. ColchicineD. IAA |
| Answer» Correct Answer - C | |