Question

stomata is the site for entery of CO2 for photosynthesis, but stomata are not poen always.Why??

Answer 1

Like many other animals, you breathe through your nose and mouth. Plants, by contrast, breathe through tiny pores called stomata on the underside of their leaves. These pores allow carbon dioxide to enter and oxygen to exit.


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Answer 2

if stomata are open always than everytime gaseous exchange and transpiration would occur which would be a problematic situation and a barrier in photosynthesis