Question

molluscs have a closed vascular system. true or false​

Answer 1

Answer:

All mollusks except those in the class Cephalopoda have an open circulatory system. ... This system of gas exchange is not adequate for the fast moving cephalopods. They have evolved a closed circulatory system that is not dependent on diffusion for blood to reach tissues throughout the body.

Explanation:

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Answer 2

Answer:

Molluscs have open vascular system