Hair occur in all mammals except those of the order _
Correct answer: D. Cetacea
- A. Rodentia
- B. Chiroptera
- C. Primata
- D. Cetacea
Explanation
Order Cetacea includes whales, dolphins and porpoises. These are the most highly modified mammals. They have a fishlike body with smooth, hairless skin devoid of sweat and oil glands, far posterior nares, small eyes, minute ear openings without pinnae, paddlelike forelimbs, no hindlimbs, abdominal testes and a flattened tail ending in two horizontal flaps or flukes.
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