Exo skelton involves: _________?
Correct answer: D. covring of skin, hair,nails
- A. short bones
- B. Bones & cartilage
- C. long bones only
- D. covring of skin, hair,nails
Explanation
In humans, the skin and its keratinized structures, including hair and nails, are sometimes described as a protective exoskeletal covering. Bones and cartilage form the internal endoskeleton, not the exoskeleton.
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