Question

If there were no guard cells what would happen to the stomata

Answer 1

Plants 'sweat' through openings in their leaves, but what controls these openings? Guard cells are small but important cells in leaves that help plants maintain optimal health.

Answer 2

There would be uncontrolled flow of water and gasses through the leaf. Most importantly, the guard cells need to close in order to keep water in, and leaves would have a hard time keeping water if guard cells did not do their job. The cells in the leaf may die.