Photosynthesis

1-Plant sabsorb water and mineral salts from the soil through their roots

2-The mixture of water and mineral salts is called row sap . it travels up the stem to  the leaves through long tubes

3-Plants obsorbcarbon dioxide though their leaves ,rap sap mixture with carbon dioxide and turns into elaborated sap with the help     of sunlight. elaborated sap is food for the plants .during this proces, plants releas oxigen

4-Finally , elaborated sap is distributed to all parts of the plant through pholem vessels.