MCQ
Stratum corneum is absent in:
- ABony fish
- BAmphibians
- CReptiles
- DAll of the above
✓
Answer
- Bony fish
Explanation:
Corneous cell envelopes are absent in fish and first appeared in adult amphibian epidermis. Complete absence of a protective keratinized stratum corneum is compensated by the relatively thick squamous zone and the copious mucus secretion in fish.
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