List and explain two types of circulatory system.

1.	List and explain two types of circulatory system.
Answer» The circultory system is of two types, 1. Open type: The blood remains filled in tissue spaces due to the absence of blood capillaries. Eg: Arthropods, Molluscs, Echinoderms, and Urochordates 2. Closed type: The blood Is circulated through blood vessels of varying diameters (arteries, veins, and capillaries) Eg: Annelids, Cephalochordates and Vertebrates

Answer»

The circultory system is of two types,

1. Open type: The blood remains filled in tissue spaces due to the absence of blood capillaries.

Eg: Arthropods, Molluscs, Echinoderms, and Urochordates

2. Closed type: The blood Is circulated through blood vessels of varying diameters (arteries, veins, and capillaries)

Eg: Annelids, Cephalochordates and Vertebrates

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