Agriculture MCQs

Page No. 95

Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?


aLinkage and crossing over

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bPresence of multiple alleles

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cPresence of lethal genes

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dSex-linkage

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A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________?


aAutodiploid

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bAutopolyploid

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cHexoploid

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dAmphidiploid

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View Answer Amphidiploid

One of the following is not a technique in hybridization_________________?


aInosculation

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bBegging

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cInter over crossing

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dIntraspecific crossing

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View Answer Inosculation

One of the following is not an advantage of genetic engineering___________________?


aMicrobes act as biological factories

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bImprovement of crop can take place

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cThe gene pool is maintained

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dGenetic error can be rectified

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Number of lindage groups of chromosomes____________________?


aDiploid number of chromosomes

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bTetraploid number of chromosomes

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cHaploid number of chromosomes

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dNone of the above

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When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________?


aAlbinism is dominant over green characters

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bGreen plastids of male parent become nitrated

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cPlastids are inherited through maternal parents

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dCrossing over results in structural changes in green plastids

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One of the persons whose evolutionary ideas were close to that of Laraarcd was____________________?


aLysendo

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bVavilow

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cWeismann

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dH be vnes

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View Answer Lysendo

Organic evolution through large discontinuous variations was propound by__________________?


aMendel

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bDarwin

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cHuge and Vnes

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dLamak

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View Answer Huge and Vnes

Evolution proceed on account of____________________?


aAdaptations through genervation

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bConversion pf organism to change of environment

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cFossils

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dStruggle for existence

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The first organisms to appear on the earth were more like plants than animals because__________________?


aPlants can manufacture their own food material

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bThere are more plants than animals

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cPlants are similar in structure

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dNone of the above

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