Question

All of the following organisms are coelomate and water vascular system is present in them. except​

Answer 1

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Answer 2

Answer:

Ophiura, Asterias and Cucumaria are coelomate and water vascular system is present in them except Chaetopleura.

Explanation:

The echinoderms' water vascular system is a one-of-a-kind circulatory system. This accounts for gaseous exchange, nutrient circulation, waste elimination, and locomotion. There is a central ring canal and radial canals that run the length of each arm in this system. Water circulates through these structures. The madreporite is a structure found on the body's surface. This is in charge of water regulation in the water vascular system.

Phylum Echinodermata is classified into the following classes:

• Asteroidea
• Ophiuroidea
• Echinoidea
• Holothuroidea
• Crinoidea

Examples

• Starfish
• Asterias (Starfish)
• Echinus (Sea urchin)
• Antedon (Sea lily)
• Cucumaria (Sea cucumber)
• Ophiura (Brittle star)