Structure of a leaf in 3D

Pick each tissue to highlight it, and switch between day and night to see the stomata open and close.

Learn photosynthesis properly

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Questions students ask

Why are most stomata on the lower surface?

It is cooler and shaded, so less water is lost by evaporation.

Where does most photosynthesis happen in a leaf?

In the palisade mesophyll, whose cells are packed with chloroplasts near the top of the leaf.

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