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Which of the following characteristics is mainly responsible for diversification of insects on land?

1. Bilateral symmetry
2. Exoskeleton
3. Eyes
4. Segmentation

Correct answer: Exoskeleton

Solution

The exoskeleton is crucial for insects living on land because it provides a tough protective covering and helps reduce water loss. These advantages made it easier for insects to survive and diversify in terrestrial habitats.

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