Write the differences between :
Open and closed systems of circulation

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Solution

Open system of circulation Close system of circulation
(1) Blood does not remain confined in the blood.
(2) Blood flows at low pressure.
(3) Blood flows at low pressure.
(4) Exchange of materials is direct between blood and body cells.
(5) It is less efficient.
(6) Found in leech, prawns, crabs, lobsters, insects, pila, etc (1) Blood remains confined in the blood.
(2) Blood flows at high pressure.
(3) Blood flows at high pressure.
(4) Exchange of materials occurs through the tissue fluid.
(5) It is more efficient.
(6) Found in Nerels, earthworm, squid and all vertebrates.

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