Agriculture MCQs

Page No. 110

The organic evolution look place about__________________?


a100,000,000 years

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b200,000,000 years

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c300,000,000 years

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dStill occurring

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View Answer 200,000,000 years

Which of the following had great influence on Drawing during during formulation of his theory of natural selection_________________?


aLamark’s idea on inheritance of acquired character’s

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bMathis’s essay on population

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cMendes’s experiment on pea

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dDe Vries theory of mutation

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Hereditary variations in plants have been produced by the use of________________?


aDDT

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bX - rays

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cGibberrellic acid

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dAuxins

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View Answer Gibberrellic acid

Red (RR) is crossed with white (ww). All the (Rw) offsprings are pink this is an indication that the R gene is_________________?


aRecessive

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bIncomplete dominant

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cMutant

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dDominant

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View Answer Incomplete dominant

haploids are better for mutation studies because in them all the mutations whether recessive or dominant are expressed as_______________?


aThere are many alleles of each gene in each cell

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bThere are two alleles of each gene in each cell

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cThere is only one alleles of each gene present in each cell

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dNone of the above

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After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?


aHeterogenous

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bHeterozygous

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cHomogenous

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dHomozygous

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View Answer Heterozygous

Epitasis implies_____________________?


aOne gene pair enhances phenotype expression of another gene pair

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bMany gene together control a parucular phenotype

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cOne pair of gene can completely mask the expression of another gene pair

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dOne gene pair independently controls a phenotype

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Who gave the principle that man tends to multiply faster than food supply________________?


aMathis

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bMendel

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cDarwin

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dHaldane

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View Answer Mathis

Who arrang the following associated with genetic engineering___________________?


aWatson

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bCrick

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cKoruna

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dMorgan

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View Answer Koruna

In case of incomplete dominance in the f2 generation_______________________?


aRatio of phenotypes is 3:1

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bRatio of genotypes is 3:1

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cPhenotypic ratio corresponds to the genotypic ratio

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dNone of the above

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