Question

One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is ______.

Options

• Amoeba

• Prawn

• Planaria

• Bryophyllum

Answer 1

One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is prawn.

Explanation:

Prawns are large, complex aquatic animals with thick shells. Simple diffusion is too slow for them, so they must use specialised respiratory organs called gills to breathe.

Amoeba, Planaria, and Bryophyllum are tiny, thin, or plant structures that can easily exchange gases using simple diffusion directly through their cell surfaces, skin, or stomata.