One process that happens in a plant cell but not an animal cell is photosynthesis.

Here's why:

* Photosynthesis is the process of converting light energy into chemical energy in the form of sugars. This process requires chloroplasts, organelles found only in plant cells.

* Animal cells lack chloroplasts and therefore cannot perform photosynthesis. They obtain their energy by consuming other organisms (heterotrophic).

Let me know if you'd like to know more about photosynthesis!