Cross section of a leaf, showing the breathing pores and intercellular spaces. The small dots are grains of chlorophyll.

Cross-section of a leaf

Cross section of a leaf, showing the breathing pores and intercellular spaces. The small dots are grains…

"Diagram to show the intake of carbon dioxide by the palisade cells from the intercellular spaces, the absorption by the chloroplasts of water from the cell-sap, and the passage of food from the chloroplasts into the cell-sap." -Stevens, 1916

Palisade Cell Intake

"Diagram to show the intake of carbon dioxide by the palisade cells from the intercellular spaces, the…