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Question

Giraffe has long neck because:


A

Environment is suitable for its long neck

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B

Due to evolution and adaptation

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C

They have become long due to their need from past

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D

Their ancestors were long necked

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Solution

The correct option is B

Due to evolution and adaptation


According to Lamarck, evolution is a gradual process and it occurs by accumulation of changes over generations.

Giraffe had to feed on leaves that were the only food available by continuous stretching of neck and forelimbs.

This increase in neck length passed on to generations in which further elongation occurred due to similar efforts.


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