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Question

Which one of the following is a protective device?

A
Competition
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B
Camouflage
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C
Commensalism
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D
Symbiosis
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Solution

The correct option is B Camouflage
Camouflage refers to adaptation wherein organisms blend themselves with certain surroundings to avoid predators. A walking stick insect camouflage itself to disguise and be protected from the predators. This method of blending with the surrounding is used as a protective device. The eggs of the frogs are camouflaged with the colour of the leaves. This provides protection against the other birds to feed on the eggs.
Thus, the correct answer is option B.

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