Figures 3.19


Molecules of the three common nitrogenous excretory products.
Figures 3.19. Molecules of the three common nitrogenous excretory products.

The high N : H ratio of uric acid relative to both ammonia and urea means that less water is used for uric acid synthesis (as hydrogen atoms are derived ultimately from water).

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  Schematic diagram of the organs in the excretory system of the desert locust Schistocerca gregaria (Orthoptera: Acrididae).
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  Comparison of generalized (a) female and ( b) male reproductive systems.