The peculiar character of echinoderms is
A. Presence of mantle cavity
B. Presence of water vascular system
C. Presence of jointed appendages
D. Presence of ostia and osculum
Answer:B
The peculiar character of echinoderms is
A. Presence of mantle cavity B. Presence of water vascular system C. Presence of jointed appendages D. Presence of ostia and osculum