We all know that plants need water. Water molecules are key for a plant when it is photosynthesising.
Here is the equation for PHOTOSYNTHESIS:
6CO2 + 6H20 = C6H12O6 + 6O2
Note: the equation is the OPPOSITE for animal respiration.
Water fundamentally gives a plant it's shape, water makes a plant rigid and solid. If you ever see a plant that is wilting (floppy), it needs water!
Plants loose water from their leaves through EVAPORATION. Water molecules are attracted to each other due to ELECTRONEGATIVITY, this is because a water molecule has a heavily positive side and a heavily negative side. POSITIVE ATTRACTS NEGATIVE. So as the evaporated water leaves the plant it draws other molecules UPWARDS to take its place.
The ROOTS also PUSH water upwards once they've taken it in, this would be the plants natural way to get water to the leaves for PHOTOSYNTHESIS to occur.
You've gotta love plants!
P.S a plant is green because they use PHOTONS of a red and blue wavelength as ENERGY for PHOTOSYNTHESIS and reflect the GREEN photons. Making them GREEN. X
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