Tunicates are sea squirts that are found in the marine water. These animals remains attached to the rocks and sea beds. They exhibit a body shape which looks like a barrel. The barrel has two openings called siphons. These siphon helps in the intake of the food particles and oxygen. These animals look like a sac on the sea floor.
There is only a net gain of 2 ATP because it creates 4 in total but costs 2 to perform. This process breaks down glucose into pyruvate in the cytoplasm.
