class of phylum echinoderma
What is the main characteristic of echinoderms?
Radial symmetry
Which of the following is not a class of echinoderms?
Mollusca
What do echinoderms use for movement and feeding?
Tube feet
Which of the following is a characteristic of echinoderms' larvae?
Bilateral symmetry
Which class of echinoderms includes sea lilies and feather stars?
Crinoidea
What is the water vascular system in echinoderms used for?
Movement and feeding
Which class of echinoderms includes sea urchins and sand dollars?
Echinoidea
How do echinoderms reproduce?
Sexually by external fertilization
What is the function of the madreporite in echinoderms?
Regulating water balance in the water vascular system
Which of the following is not a characteristic of echinoderms?
Segmented body