Plants expend energy from sunlight to convert aura and water into sugars that they need to develop . This chemical unconscious process is call photosynthesis . Plants do n’t require soil to produce nutrient . They can raise using only light and water , which is how they are turn hydroponically . Water is H - O - H ( H2 ) , a speck that has two atom of hydrogen and one speck of H . An electron bind these speck together . Carbon dioxide is C - type O - O ( CO2 ) , a atom that contains two atoms of oxygen and one particle of carbon copy . The electron that binds the hydrogen and O together in weewee is the cay to photosynthesis . It hold the H from the water to the carbon atom of carbon dioxide to organize sugars which the plant involve to grow . A biological science textbook would compose this as 6CO2 + 6H2O = C6H12O6 + 6O2 . This pattern means that six molecules of carbon paper dioxide , get from the air , plus six molecules of water equal saccharide necessary for plant life increment plus six molecules of atomic number 8 that are free into the air as waste .
Energy
The conversion of water supply and atomic number 6 dioxide into shekels nutrients ask energy . The plant life engender this energy from light . It can use sun or brightness level produce artificially by grow lights . The chlorophyl in the leaves of plants assimilate photon from light and turns them into high - energy mote demand to unite the H from water and the carbon from C dioxide . A photon is a bar of electromagnetic energy that has no electric direction , no mass and an indefinite lifetime . Synthesis means to " put something together . " The word " photosynthesis " literally means " putting together from twinkle . "
Getting the Water
A high assiduity of minerals in the works radical form a pressure that pulls water supply from the soil and pushes it up into the plant . The water travel through a series of watercraft to the leaves , where it is used for photosynthesis . These vessel are called the xylum . The leaves also have veins that conduct water . Dew on the grass in the morning is in reality sap containing water that was extract up during the night . This water is lost during the day during transpiration , a form of plant breathing . A plant only uses 1 per centum of the water it take in for photosynthesis . The rest is lost in transpiration in industrial plant leaves and blades .
