it gives the leaf food, carbon dioxide enters through tiny holes called stomata, Oxygen leaves plant through stomata. This is called respiration
Eucalypts are called "sclerophyllous" which means 'hard leaves'. This means they are hardy in low water conditions. They hang vertically so they are not exposed to the midday sun which reduces water...
Most commonly located on the underside of the leaf.
The majority of stomata in plant cells are located within the thylakoid
To allow co2, h20 and o2 to move in and out of the leaf.