a. explain the process of nutrition in amoeba with a diagram

B. how does paramecium obtain its food?

Nutrition in Amoeba: Amoeba consumes food with the help of pseudopodia. Pseudopodia are temporary finger-like projections of the cell surface, which fuse over the food particle. This results in the formation of a food vacuole.

It is inside this food vacuole that complex substances are broken down into simpler ones. These are then diffused into the cell cytoplasm. The remaining undigested material is thrown out of the cell surface.

Nutrition in Paramecium: In Paramecium, food is ingested through a definite cell mouth. The cilia present all over the body move continuously to push the food particles along the water current. The food entering inside collects to form a food vacuole. Digestion of food occurs inside this food vacuole. The undigested food is removed through a definite anal spot.