How does the specialized gut (digestive tract) a closed circulatory system and many nephridia increase the efficiency of digestion, circulation, and excretion?
Nephridia remove metabolic wastes from an animal's body. It typically consists of a ciliated funnel opening into the body cavity or coelom connected to a duct which may be variously glandularized, folded or expanded (vesiculate) and which typically opens to the organism's exterior.
Answered by Clint C. -
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