Question

Echinodermata Excretion

Answer 1

They have a water-vascular system that is made up of cells devoted to taking in waste and passing it along through tiny openings. They pass it along to an area known for star fish as the tube feet that put out excretion in the form of nitrogenous waste (urine).

Answer 2

Hey!

Here is your answer⬇⬇

✔Specialised excretory organs are absent. Excretion takes place by diffusion through the body surface.

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