Agriculture MCQs

Page No. 99

Self incompatibility is used for hybrid seed production in______________________?


aRice


bMaize


cCabbage


dTomato


View Answer Cabbage

In populations genotypic and phenotypic ratios are identical in cases of___________________?


aMendelian monohybrid


bMendelian dihybrid


cIncomplete dominance


dNone of the above


View Answer Incomplete dominance

Continuous variation are attrions are attributed to____________________?


aCrossingover


bPolyploidy


cMutation


dLinkage


View Answer Crossingover

An exce4ption of Mendel’s law is______________________?


aDominance


bLinkage


cIndependent assortment


dPurity of gametes


View Answer Linkage

The slow process by which new types of organisms arise from existing forms by genetics variation is called_______________________?


aGenetics


bMutation


cEvolution


dPolyplidy


View Answer Evolution

If the offspring of F, (blue) is crossed with white male parent the result will be______________________?


aAll blue


bAll white


cAll black


dHalf blue and half white



When red tall plant is crossed with dwarf white plant all the plants of F, are found to be tall red. which of the following ratio will be available when a test cross is made_________________?


a1:2:1


b1:1:1:1


c1:2:3


d3:1


View Answer 1:1:1:1

If a haploid chromosome number of a gymnosperm is 12 the chromosome in its endosperm will be__________________?


a6


b12


c24


d36


View Answer 12

If a plant heterozygous for tallness is selfed, f2 feneration has both tall and dwarf plants. this proves the principle of__________________?


aDominance


bSegregation


cIncomplete dominance


d Independent assortment


View Answer Segregation

If a heterozygous tall plant is crossed with a homozygous dwarf plant the proportion of dwarf progerry will be__________________?


a25%


b50%


c75%


d100%


View Answer 50%

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