Cuticle - waxy layer - reduces water loss, Upper epidermis- transparent - to let light in, Palisade layer-lots of chloroplasts for photosynthesis, Spongy layer space for diffusion of gases, Stoma - Pores that can open and close to regulate transpiration and allow gas exchange., Guard cells- they swell with water and open the stomata ( pores/gaps).

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?