Question

When do the guard cells become flaccid?

Answer 1

This causes the guard cells to bend away from each other, thereby opening the stomata. Conversely, when guard cells lose potassium ions, waterdiffuses out of the cells by osmosis. As water leaves the cells, they become flaccid and less bowed, which closes the stomata between them.

Answer 2

This causes the guard cells to bend away from each other, thereby opening the stomata. Conversely, when guard cells lose potassium ions, waterdiffuses out of the cells by osmosis. As water leaves the cells, they become flaccid and less bowed, which closes the stomata between them.