-Chloroplasts: Chloroplasts are the plant cell's "energy power plant" as well as mitochondria- they are involved in photosynthesis, making food and energy for the cell.
-Cell walls: Cell walls are rigid layers around the cell membrane. They are made of cellulose and help maintain the cell's shape and prevent it from swelling too much.
One organelle only in animal cells:
-Centrioles: Centrioles are structures that make spindle fibers for the movement of chromosomes in mitosis.
A different organelle:
-Vacuoles:
In plant cells, the vacuole is called a "central vacuole". The central vacuole is a large "balloon" that holds water, nutrients, ions, trash, etc. for the cell.
In animal cells, there are numerous smaller vacuoles. They have the same function.