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Question

Besides feathers, the birds can have

A
Hair
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B
Subcutaneous fat layer
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C
Enucleated RBC
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D
Diaphargm
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Solution

The correct option is B Subcutaneous fat layer
Fat is laid down as adipose tissue in various parts of birds body especially under the skin and in well-defined deposits within the wishbone and around the gut. This subcutaneous layer of fat is relatively soft even at body temperature. It has the advantage in birds that its oxidation yields an equal weight of water, thus contributing to another of the bird's needs during long distance flights. Hence, option B is correct.

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