The Function of the Papulae in the Sea Star Is

Question

The function of the papulae in the sea star is
A)respiration.
B)excretion.
C)reproduction.
D)digestion.

Accepted Answer

Papulae in sea stars are thin, finger-like structures that protrude from the body surface and are primarily involved in respiration. They allow the exchange of gases (oxygen and carbon dioxide) with the seawater. While sea stars do have other organs (such as the madreporite and tube feet) involved in excretion, reproduction, and digestion, the primary role of papulae is in respiration.