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Open Circulatory System – Blood flows freely through open spaces or sinuses, rather than being confined to vessels. Example: Arthropods (insects) and mollusks.
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Closed Circulatory System – Blood remains within a network of vessels (arteries, veins, and capillaries) throughout the body. Example: Vertebrates (humans, fish, amphibians) and annelids (earthworms).
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Question
Name these:
Two kinds of circulatory systems in different animals.
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Solution
The two kinds of circulatory systems in different animals are:
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