How does the fluid circulate without one or more pumps

Reference no: EM1396553

The branching gastro vascular cavity of cnidarian and Platyhelminthes: Do these animals have distinct boundary organs? Compare and contrast the basic body plan of these animals? How does the fluid "circulate" without one or more pumps? Explain why they don't need separate circulatory and respiratory system.

Reference no: EM1396553

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How does the fluid circulate without one or more pumps : The branching gastro vascular cavity of cnidarian and Platyhelminthes: Do these animals have distinct boundary organs? Compare and contrast the basic body plan of these animals? How does the fluid "circulate" without one or more pumps? Explain why..

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