Plant cells are different to animal cells in many ways. Thanks to them, we can eat, have heat, and our evolution was made possible. They are uniquely specialized to convert carbon dioxide, water and sunlight into energy for growth and maintenance. The process is called photosynthesis and leaves the by-product, oxygen in atmosphere, which is pretty helpful to us animals.
Plant cells differ from animal cells in many ways, the main difference being the rigid cell wall, made from cellulose and lignin, inherited from algae ancestors. Cell walls give plants their structure and protects organelles vital for life.
Plant cell organelles are similar to animal cells, with a few extra. Plastids and a large central vacuole also differentiate them from animal cells and allows them to grow far taller than we ever could.