User:Victoromitsa/sandbox

Gaseous Exchange In Protozoa A good example of protozoa is Amoeba which is classified under Kingdom Protoctista. Is a very small organism with a large surface area to volume ratio hence its mode of movement is by means of Pseudopodia and reproduction is Binary fusion. Since Amoeba is an acquatic organism, gaseous exchange occurs through diffusion. Oxygen gas dissolves in water and later on diffuses into the respiratory system of the Amoeba, whereas Carbon dioxide diffuses out as a by product by means of diffusion. Note that the mode of excretion is either by means of diffusion or contractile vacuole.