Question

___ in which the blood is circulated through blood vessels of varying diameters.

a) Open type circulation b) Closed type of circulation

c) Diploblastic animals d) Triploblastic animals​

Answer 1

Answer:

Closed type circulation is the circulation in which blood is circulated through a series of vessels of varying diameters

Answer 2

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Closed type circulation is the circulation in which blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries).