Chelone is commonly known as

Sharks do not have

Which of the following animal is cold blooded and has 4 – chambered heart

The following group is not a subphylum of Chordata

Member of Echinodermata has a specific system, which is not found in other phylum, it is –

Which of the following is found in both coelenterates and echinoderms in adult stage ?

The animal with tube-feet is –

Water vascular system is found in –

Salpa and Doliolum belong to

Antedon is commonly called :-