Which of the following organisms do not have an endoskeleton?

Bristles

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Reptiles

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Birds

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Insects

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Solution

The correct option is D
Insects

Insects have a hard outer covering known as an exoskeleton. This exoskeleton protects their organs and gives them support for moving around. Amphibians, reptiles, and birds have an endoskeleton. The skeleton is present inside the body and made up bones.

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Which of the following organisms do not have an endoskeleton?

The correct option is D Insects Insects have a hard outer covering known as an exoskeleton. This exoskeleton protects their organs and gives them support for moving around. Amphibians, reptiles, and birds have an endoskeleton. The skeleton is present inside the body and made up bones.

The correct option is D
Insects

Insects have a hard outer covering known as an exoskeleton. This exoskeleton protects their organs and gives them support for moving around. Amphibians, reptiles, and birds have an endoskeleton. The skeleton is present inside the body and made up bones.