Biology, asked by Anonymous, 10 months ago

Annelids were the first animals to have blood Vascular system?

Answers

Answered by muskan87Sinha

Answer:

Explanation:

Much like humans, annelids have a closed circulatory system, which means the blood circulates through a closed network of blood vessels. In some cases, such as with polychaete worms, the blood is pumped directly through self-contracting blood vessels.

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