Quiz 3 Name:

EEB 200 Biology of Fishes Spring 1998

1. (5 pts.) In the following diagram of the nephron, indicate both the name of the structure and the process that takes place there. Which structure may be missing from marine teleosts, and why? Which structure is quite elaborate in marine elasmobranchs, and why?

Marine teleosts may lack a glomerulus to conserve water.

The tubule may be elaborate in marine elasmobranchs to conserve urea