Biology, asked by barunkumar011977, 2 months ago

comment upon placoid scales.​

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Answered by sunakar483
1

Answer:

placoid scale (dermal denticle) Type of scale that comprises the basic unit of the hard skin cover of sharks. It consists of a hard base embedded in the skin and a spiny process (cusp); these are covered by a hard, enamel-like substance (vitrodentine), and the scale projects outwards and backwards.

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