Agriculture MCQs

Page No. 99

Self incompatibility is used for hybrid seed production in______________________?


aRice

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bMaize

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cCabbage

✓


dTomato

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View Answer Cabbage

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


aMendelian monohybrid

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bMendelian dihybrid

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cIncomplete dominance

✓


dNone of the above

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View Answer Incomplete dominance

Continuous variation are attrions are attributed to____________________?


aCrossingover

✓


bPolyploidy

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cMutation

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dLinkage

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View Answer Crossingover

An exce4ption of Mendel’s law is______________________?


aDominance

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bLinkage

✓


cIndependent assortment

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dPurity of gametes

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View Answer Linkage

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


aGenetics

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bMutation

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cEvolution

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dPolyplidy

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View Answer Evolution

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


aAll blue

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bAll white

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cAll black

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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

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b1:1:1:1

✓


c1:2:3

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d3:1

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View Answer 1:1:1:1

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


a6

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b12

✓


c24

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d36

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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

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bSegregation

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cIncomplete dominance

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d Independent assortment

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View Answer Segregation

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


a25%

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b50%

✓


c75%

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d100%

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View Answer 50%

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