Why is endocytosis found in animals only ?

Endocytosis generally occurs in animal cells and very rarely in plant cells as the cell membrane in plant cell is surrounded by a rigid cell wall. Cell wall causes hindrance in the invagination of plasma membrane which forms the transport vesicles for the transfer of substances in the cytoplasm of the cell. 

Nitrogen fixing bacteria enter the root cells in legumes through endocytosis. 


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