Peculiar water driven tube system is the unique feature of the following group:
Echinodermata
Arthropoda
Annelida
Platyhelminthes
Water vascular system is typical characteristic of Echinodermata and it performs most of their physiological activities.
Question 7 In which group of animals, coelom is filled with blood? (a) Arthropoda (b) Annelida (c) Nematoda (d) Echinodermata
Which of the following characteristic feature is unique to Phylum Echinodermata?