. Assertion: Open circulatory system is found in most arthropods
Reason: Arthropods contain haemolymph which directly bathes internal tissues and organs.
Best Answer
Answer ||| (a)
Solution ||| Most arthropods certain molluscs and tunicates contain open circulatory system. In them, a fluid composed of blood mixed with tissue fluid bathes with internal tissues and organd directly. It oozes through spaces catities that surround the organs, this mixture of fluid is usually referred to as haemolymph.
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