Which of the following have distinct central disks and long, flexible arms?
A)class Crinoidea (sea lilies and feather stars)
B)class Asteroidea (sea stars)
C)class Ophiuroidea (brittle stars)
D)class Echinoidea (sea urchins and sand dollars)
E)class Holothuroidea (sea cucumbers)

Question

Quizplus · Accepted Answer

Class Ophiuroidea, or brittle stars, have a distinct central disk and long, flexible arms, which differentiates them from other echinoderms.

Which of the Following Have Distinct Central Disks and Long