Excretory Organs of Invertebrates and Vertebrates | Zoology
In this article we will discuss about the excretory organs of invertebrates and vertebrates. Excretory Organs of Invertebrates: Excretory organs in different degrees of specialisation are present in all cases except protozoon's, diploblastic animals and echinoderms. They are paired, the number varying from one to many pairs and made of narrow excretory tubules or nephrons, with or without internal and [...]