Question

Choose the incorrect pair:

• A. Ammonotelic - Starfish
• B. Uricotelic - Periplaneta americana
• C. Ureotelic - Rana tigrina
• D. Ammonotelic - Homo sapiens

Answer 1

The correct option is D Ammonotelic - Homo sapiens

Ammonotelic organisms excrete nitrogenous wastes in the form of ammonia and ammonium ions. Marine organisms excrete ammonia directly into the water. Examples - aquatic invertebrates like starfish.

Uricotelic organisms excrete nitrogenous wastes in the form of uric acid. It is released in the form of concentrated paste-like white suspension. Examples - birds and insects like Periplaneta americana.

Ureotelic organisms excrete nitrogenous wastes in the form of urea. This form is less toxic and requires less water for it's removal when compared with ammonia. Examples - mammals and amphibians like Homo sapiens and adult Rana tigrina.