Question

Why do plants need a cell wall and not the animal cells?

Answer 1

as cell wall protect the plant cell from high wind speed, temperature change etc.

Answer 2

All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, butplant cells only have the shapes of their cell walls. That's nice for plants, because it gives them the ability to grow up and out, where they can get lots of sunlight for making their food.