Question

tooth like scales of sharkes differ from teeth by not having
a)vitro dentine
b)dentine
c) pulp cavity
d)enamel​

Answer 1

Answer:

All are present in placoid scales.

Explanation:

Like our teeth, placoid scales have an inner core of pulp (made up of connective tissues, blood vessels, and nerves), which is covered by a layer of dentine (hard calcareous material). This dentine is covered by enamel-like vitrodentine which is still harder.