Question : Animals having open circulatory system possesses:
Option 1: coelenteron
Option 2: spongocoel
Option 3: pseudocoel
Option 4: haemocoel
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Correct Answer: haemocoel
Solution : The correct option is haemocoel .
Animals with an open circulatory system frequently have a bodily cavity known as a "haemocoel" or "hemocoel". The haemocoel is a huge fluid-filled hollow that surrounds the body's organs. The circulatory fluid, termed hemolymph, is pushed into the haemocoel by a heart in animals with open circulatory systems, such as arthropods (like insects and crustaceans) and certain molluscs.
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