Question

6. How does Amoeba acquire oxygen from its surroundings?
7. Why do farmers turn the soil in their fields?​

Answer 1

• By the mechanism of diffusion, amoeba obtains oxygen gas dissolved in surrounding water by its plasma membrane. The amoeba uses up the oxygen gas that is diffused within the body and the absorbed oxygen is used to break down the complex food material into simpler molecules.

• Plowing also makes it easier to plant.Turning the soil over not only mixes this organic matter, but it also increases oxygen in the soil which speeds up decomposition of the organic matter and makes more oxygen available for the plant roots. One problem that farmers face is weeds in their field.

Answer 2

Answer:

6. Amoeba respires by the diffusion of gases in and out of its body.

7. Farmers turn the soil by tilling or turning the soil so that fresh air or oxygen can enter the soil and create little pockets of air where both water and air can get stored and be used by the plant growing in the soil.