Question

A}Write the common names of:
1- antedon
2- holothuria
3- echinus
4- asterias
B} name the phylum to which they belong.
C} name the system they use for moving around.

Answer 1

Antedon - Feather star
Holothuria- sea cucumber
Echinus- sea urchin
Asterias- starfish
They belong to echinodermata
They move around by water vascular system.
Hope it helps you.

Answer 2

A) Common names:-

1) Feather star

2) Sea cucumber

3) Sea urchin

4) Starfish

B) They belong to echinodermata phylum.

C) They use water vascular system for moving around.