Question

13)What is plasma membrane? Why is the cell wall present in plant cells and not in animal cells?

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Answer 1

Answer:

Plasma membrane is the outermost layer of cell. It separates the content of cell from its external environment.

Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, but plant cells only have the shapes of their cell walls

Explanation: