Answer:
All life processes i. e. digestion, reproduction and excretion etc is carried out by amoeba.
Explanation:
Amoeba is a unicellular organisms which performs all the functions that is necessary for its survival. These functions are
1) Reproduction: Amoeba reproduce asexually i. e. binary fission. In binary fission, the body of organisms is divided into two equal parts.
2) Digestion: Digestion is done by the amoeba by engulf the food and absorbs nutrients from them.
3) Excretion: The waste material is collected by amoeba and remove it from the body.
