EXCRETORY STRUCTURES IN NON-CHORDATES
In protozoans, porifers and coelenterates the specialised excretory structures are absent. The excretion in these animals occurs through the general body surface. The contractile vacuoles…
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excretory system
EXCRETORY SYSTEM IN HUMAN
Except for urinary bladder which is endodermal in origin, the whole excretory system is Except urinary bladder which is endodermal in origin, the whole excretory…
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