In which of the following animals, is open circulatory system found? A)Prawn B)Earthworm C)Toad D)Man
Option A) The open circulatory system is a system in which fluid in a cavity called the hemocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolymph or hemolymph. Arthropods and mollusks have an open circulatory system.
