STOMATA

 STOMATA: Stomata are minute pores present on the surface of the leaves.Generally the number of stomata are more on the lower surface than on the upper surface. Stomata helps in the exchange of gases and transpiration. Plants perform photosynthesis by taking carbon dioxide through stomata and gives out oxygen in this process through the stomata. In respiration plants takes oxygen through stomata. Excess amount of water from the plant body is also given out through stomata, this is called transpiration.

Guard cells are present around the stomata.