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What are the main characteristics and groups of echinoderms?
Echinoderms are invertebrates with an internal skeleton and a system of fluid-filled tubes called a water vascular system. There are four major groups of echinoderms: sea stars, brittle stars, sea urchins, and sea cucumbers.
Do sea stars have an open or closed circlitory system?
Sea stars use their water vascular system for circulation, excretion, and movement. This is a closed circulatory system because the fluids (water mostly) all travel through a series of stone, radial, and ring canals.
Do sea urchins have a water vascular system?
sea urchins are species which belongs to phylum echinordermata, class ecinoidia. Normally every echinodermates has water vascular system. And sea urchin, yes it is. It has water vascular system.
How do sea stars breath?
Echinoderms move, feed and breathe with a unique water-vascular system ending in what are called tube feet. Sea stars use their tube feet to slowly pry open clams, mussels or other prey. Some sea stars can even evert their stomach between the two shells of a bivalve and digest the soft parts inside.
Does a sea star have book lungs?
No, sea stars do not have book lungs. They have a water vascular system that helps with their movement, respiration, and feeding. Book lungs are structures found in some spiders and scorpions for breathing.
Why do starfish filter the sea water?
Through there Water Vascular System
How is braking system of a car similar to the water vascular system of A sea star?
They both use the hydraulic system!
How is the braking system of a car similar to water vascular system of a sea star?
They both use the hydraulic system!
How is the braking system of a car similar to the water vascular system of a sea star?
They both use the hydraulic system!
What is water vascular system and its general structure and function?
The water vascular system is a hydraulic system used by echinoderms, such as starfish and sea urchins, for locomotion, food and waste transportation, and respiration.
Can sea stars feel pain?
Highly unlikely. Sea stars don't have a central nervous system.
What animal has tube feet?
tube feet are most common in echinoderms. this is a phylum which includes animals such as sea stars and sea urchins. echinoderms control much of the movement of their tube feet using their water vascular system.
