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Strategies for Enhancement in Food Production

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Artificial selection to obtain cows yielding higher milk output represents

  • Stabilizing selection as it stabilizes this character in the population

  • Directional as it pushes the mean of the character in one direction

  • Disruptive as it splits the population into two one yielding higher output and the other lower output

  • Stabilizing followed by disruptive as it stabilizes the population to produce higher yielding cows


B.

Directional as it pushes the mean of the character in one direction

Artificial selection to obtain cow yielding higher milk output will shift the peak to one direction, hence, will be an example of Directional selection. In stabilizing selection, the organisms with the mean value of the trait are selected. In disruptive selection, both extremes get selected.

Artificial selection to obtain cow yielding higher milk output will shift the peak to one direction, hence, will be an example of Directional selection. In stabilizing selection, the organisms with the mean value of the trait are selected. In disruptive selection, both extremes get selected.


Who is called the Father of White revolution ?

Dr. V. Kurien.

What was the aim of white revolution ?

Increased milk production.

Explain why Inbreeding cannot be continued for long .

Inbreeding if continued causes Inbreeding depression that means  productivity and fertility of the organisms is eventually reduced. Inbreeding produces homozygous condition and exposes harmful recessive genes.

Give one example of each of indigenous and exotic milch breeds of cow.

Indigenous breed : Sahiwal;
Exotic breed : Brown swiss.

Define the livestock.

Domesticated animals reared using agricultural practices for the production of milk, hide, flesh, etc for human use.