Which of the following correctly describe a sea urchin?

select all that apply.

cnidarian
chordate
invertebrate
echinoderm
deuterostome

Option D, Echinoderm

Explanation:

Deuterostome are species which are bilalteral in structure and the first embryonic opening becomes the anus.  

There are three classes of deuterostome namely  

•Chordata  

•Echinodermata  

•Hemichordata  

The sea urchin belongs to the phylum Echinodermata which have radial symmetry (includes starfish etc.) and have a unique a water-vascular system (hydraulic system) which is used for respiration, locomotion and transportation of food item.  

Thus, option D is the correct answer.

answer; the above statement is (true);