Question

What do you mean by open circulatory system and give example?

Answer 1

Answer:

Open circulatory systems are systems where blood, rather than being sealed tight in arteries and veins, suffuses the body and may be directly open to the environment at places such as the digestive tract. It also contains immune cells – but hemolymph does not have red blood cells like our own.

Answer 2

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Open circulatory systems are systems where blood, rather than being sealed tight in arteries and veins, suffuses the body and may be directly open to the environment at places such as the digestive tract. ... It also contains immune cells – but hemolymph does not have red blood cells like our own.