Sea urchins and sand dollars.
Starfish or sea stars are echinoderms belonging to the class Asteroidea
They belong to Phylum Invertebrates/Echinoderms and Class Asteroidea.
A blastoid is a member of an extinct class of echinoderms, the Blastoidea.
The only Echinoderms that have a hearts are a few species of the class Holothuroidea, which are the sea cucumbers (most do not). The other classes of Echinoderms do not possess a heart ever (Class Asteroidea, Class Ophiuroidea, Class Echinoidea)
Echinoderms are the phylum. The phylum is Echinodermata Echinoderms are the phylum. The phylum is Echinodermata Echinoderms are the phylum. The phylum is Echinodermata
No.
No, oysters belong to the gastropoda class of invertebrates.
Holothuroidea is a class of echinoderms including the sea cucumbers.
Starfish are echinoderms of the class Asteridea not fish.
Cnidarians and echinoderms
Starfish or sea stars are echinoderms belonging to the class Asteroidea
Yes you can you can choose the same class.