Question

Explain blood vascular system in earthworm.

Answer 1

Answer:

The blood vascular system of Pheretima posthuma consists of an elaborate system of blood vessels through which blood flows continuously. The blood of earthworm is red in color due to the presence of hemoglobin dissolved in the plasma unlike other vertebrates where hemoglobin is present in the red blood cells.

Answer 2

Answer:

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Explanation:

Earth worm has a closed circulatory system. An earthworm circulates exclusively through vessels. There are five pairs of aortic arches which have the responsibility of pumping blood into dorsal and ventral blood vessels.