what is stomata

Q- What is stomata?

Answer:- Stomata help in gaseous exchange at the time of respiration and photosynthesis. These are the minute pores found in the epidermis of leaves. Opening and closing of stomata is controlled by turgidity of guard cell.

There are two kidney shape called guard cell which is bound a minute pore in stroma. The wall of guard cell near the pore is thick and outer wall is thin, elastic and semi-permeable 

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