Question

What does Echinodermata mean?

Answer 1

Echinodermata is a phylum of marine invertebrates which includes starfishes, sea urchins, brittlestars, crinoids, and sea cucumbers. They have fivefold radial symmetry, a calcareous skeleton, and tube feet operated by fluid pressure.

Answer 2

In term echinodermata, Echino means hedgehog( spiny mammels )

And derma means skin, these are spiny skinned organism.

Ex = sea-star , sea - urchin