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Open and Closed Circulatory System

Open circulat...

Question

Open circulatory system is present in:

A

Annelids and chordates

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B

Annelids and arthopods

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C

Arthropods and chordates

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D

Arthropods and Mollusca

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Solution

The correct option is D Arthropods and Mollusca
An open circulatory system is a system in which the blood and the interstitial fluid are allowed to mix in an organism.
Two of the largest phyla in the world namely, Arthropods and Mollusca, have an open circulatory system.
So the correct option is D

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