Question

12. According to the given data, the blood of which organisms flows in
blood vessels?


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Answer 1

Answer:

ans is 1,3,5 that is annelids, cephalopod mollucs, higher chordates

Explanation:

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Answer 2

Answer: With explanations

The organisms which has open circulatory system on that blood vessels transport all fluids into a cavity. When the animal moves, the blood inside the cavity moves freely around the body in all directions.

so which have closed system they can't flow in blood vessels