Question

What is the flow of blood and lymph ,unidirectional or bidirectional?

Answer 1

Flow of blood in Mammals is $\textbf{unidirectional}$ due to presence of four types of valves in the heart.

More to know about blood, and heart in Attachment !

Flow of lymphatic system is $\textbf{unidirectional}$ as it only removes the tissues and carries it one way to the heart.

More to know about lymphatic system in Attachment !

Answer 2

Answer:

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Explanation:

Blood flows bidirectionally as blood has to carry and deposit O2 and also CO2 but lymph flows unidirectional as it only has go to tissues.