How does the Amoeba use its pshyical features to live in its particular habitat and life style?

Question

I know Amoeba's live in freshwater, the oceans, upper areas of soil and sometimes on the body of aquatic aniamls, and inside some aquatic and terristrial animals... but what do amoeba have that makes it well suited to live in these habitats?

Answer 1

Amoebas do indeed live in different aquatic habitats. Its main adaptation is called a contractile vacuole. This organelle allows the amoeba to "pump" in or out water, depending on its needs. If the amoeba is placed in an isotonic solution, or the concentration of solute outside is the same as the amoeba, then nothing will happen. When placed into a hypertonic solution, say, saltwater, then water will rush into the amoeba and it will pump water out using the contractile vacuole.