Question

Wright some points on nutrition in amoeba

Answer 1

Answer:

Explanation:

1. Ingestion

Nutrition in Amoeba

    Ingestion is the process of taking food in the body. Amoeba is a unicellular animal, so it doesn’t have a mouth for ingestion of food. Amoeba ingests the food by encircling it by forming pseudopodia. When the food is completely encircled , the food is engulfed in the form of a bag called food vacuole.

2. Digestion

    Digestion is the process of breaking the large and insoluble molecules in small and water soluble molecules. In amoeba, several digestive enzymes react on the food present in the food vacuoles and break it down into simple and soluble molecules.

3. Absorption

    The food digested by digestive enzymes is then absorbed in the cytoplasm by the process of diffusion. While the undigested food remains in the food vacuole. If a large amount of food is absorbed by amoeba, the excess food is stored in the cytoplasm in the form of glycogen and lipids.

4. Assimilation

    During this step the food absorbed by the cytoplasm is used to obtain energy, growth and repair. This process of utilizing absorbed food for obtaining energy, repair and growth is called assimilation.

Answer 2

Nutrition in amoeba involves steps given below:

1. Ingestion : Amoeba ingests food with the help of finger like extensions called pseudopia. When the food particles approaches ameoba it forms a vacuole around it.
2. Assimilation : Amoeba obtains energy from the food through respiration and this energy is utilised by amoeba for its growth and repair.
3. Absorption : The simple soluble food is adsorbed by cytoplasm through the process of simple diffusion.
4. Digestion : Various enzymes from the cytoplasm enter into the food vacuole and break down into simple molecules.
5. Egestion : When a considerable amount of undigested food gets collected inside amoeba. Its membrane ruptures and eject out the undigested food.