Question

Only mode of excretion in marine bony fishes and desert amphibians is ______.

Options

• Diffusion

• Tubular secretion

• glomerular filtration

• selective reabsorption

Answer 1

Only mode of excretion in marine bony fishes and desert amphibians is tubular secretion.

Explanation:

In marine bony fishes, the glomeruli are reduced or absent, so excretion of wastes is mainly through tubular secretion rather than filtration or diffusion.