Question

multiple - choice question
the job of the guard cells is to do all of these functions except:
open and close the stoma
keep carbon dioxide entering the leaf
to keep water out of the leaf
keep oxygen exiting the leaf
rewatch
submit

Explanation:

Guard cells surround stomata and control their opening and closing, regulating gas - exchange (allowing carbon dioxide in and oxygen out) and transpiration. They do not keep water out of the leaf; rather, they help regulate water loss.

Answer:

C. to keep water out of the leaf