Plant cells are usually larger than animal cells. Plant cells often have a box-like shape. Animal cells come in a wide variety of shapes. Plant cells have a stiff cell wall and a thin cell membrane. Animal cells only have a cell membrane.
Many plant cells have green chloroplasts.
Chloroplasts make food. Animal cells do not have chloroplasts. A tissue is a group of cells that are alike. Heart tissue is made of heart cells. Brain tissue is made of brain cells.