Agriculture MCQs

Page No. 103

In Incern, resistance to spotted aphid is associated with__________________?


aLow saponin in leaves


bHigh saponin in leaves


cHigh DIMBOA in leaves


dHigh silicant content



A mutation which kills 50% of the individual that carry the mutation is known as_________________?


aSub lethal mutation


bLethal mutation


cVital mutation


dSub-vital mutation


View Answer Sub lethal mutation

Stadler, first used X-rays for induction of mutation in_________________?


aOat


bMaize


cWheat


dBarley


View Answer Barley

In primary trisomic the extra chromosome is__________________?


aIsochromosome


bTraits located chromosome


cNormal chromosome


dNone of the above


View Answer Normal chromosome

The change in chromosome number which involves the entire set of genome is known as______________?


aAnenploidy


bEuploidy


cTrisomy


dAll of the above


View Answer Euploidy

A nullisomic individual is represented by________________?


a2n-1


b2n+1


c2n-2


d2n+2


View Answer 2n-2

Colchicum () is extracted from__________________?


aSeed


bBulb


cFruit


dFlower


View Answer Bulb

Out breeding leads to reproduction in____________________?


aHeterozygosity


bHomozygosity


cPopulation mean


dNone of the above


View Answer Homozygosity

Heterosis can be fixed by___________________?


aApomixes


bPolyploidy


cAsexual reproduction


dNone of the above


View Answer Asexual reproduction

Heterosis can be fully exploited in the form of_____________________?


aHybrids


bComposites


cMulti lines


dSynthetics


View Answer Hybrids

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