ECHINODERMATA II

Isi roda ini (10 pilihan)

• networks of canal which branches into tiny tube feet for movement, gas exchange and feeding
• able to change stiffness and fluidity of the body
• outfoldings protruding between ossicles which functions for respiration
• calcium carbonate valves used for removing unwanted organisms or debris in the surface of the sea stars body
• able to change stiffness and fluidity of the body
• a system of ossicles and muscles which protrude from the mouth for feeding
• invaginations for respiration and brood sacs for embryo
• protective calcareous plate made of single calcite crystal
• reproduction of echinodermata
• able to change stiffness and fluidity of the body