Gas Exchange in Various Animals | Zoology
In this article we will discuss about the mechanism of gas exchange in various animals:- 1. Aquatic Animals 2. Invertebrate Gill 3. Vertebrate Gill. Aquatic Animals: Small aquatic animals, protozoa and somewhat large forms, viz. sponges and hydras, in which water current bathes the cells, a definite respiratory structure is absent. The situation is similar in forms in which the [...]