Question

How does endocytosis help in single celled organisms like amoeba

Answer 1

It's their method of obtaining food particles from the surrounding
They form pseuopodia and engulf the particles through endocytosis or phagocytosis and then the food particles are trapped by a food vacuole and digested there

Answer 2

Endocytosis is the process involving the bulk transport of materials into the cell through membranes. It occurs by the infolding or extension of cell surface membrane to form a vesicle or vacuole. Endocytosis occurs by an infolding or extension of the cell surface membrane to form a vesicle. It is of two types, pinocytosis (cell drinking) and phagocytosis (cell eating). Exocytosis is the exact opposite process of endocytosis. Waste materials may be removed or useful materials may be secreted by this method.

Endocytosis occurs through pseudopodia in amoeba.