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Question
Assertion :Vertebrates have epidermal scales Reason: Fish are exceptional with dermal scales as stratum corneum is absent
Assertion :Vertebrates have epidermal scales Reason: Fish are exceptional with dermal scales as stratum corneum is absent
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Scales are the outgrowth plate-like structure on the body surface mainly on the outsides of reptiles, birds, and mammals and are called epidermal scales.
- The special cells of the epithelial layer produce the epidermal scale as a dense plate of keratinized tissue exposed to the surface of the epidermis and thus called as stratum corneum.
- Dermal scales are found almost exclusively in fishes and some reptiles. They are bony plates that fit closely together or overlap and form the dermal skeleton. Thus, the correct answer is option A.
- Scales are the outgrowth plate-like structure on the body surface mainly on the outsides of reptiles, birds, and mammals and are called epidermal scales.
- The special cells of the epithelial layer produce the epidermal scale as a dense plate of keratinized tissue exposed to the surface of the epidermis and thus called as stratum corneum.
- Dermal scales are found almost exclusively in fishes and some reptiles. They are bony plates that fit closely together or overlap and form the dermal skeleton. Thus, the correct answer is option A.
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