Photosynthesis Overview How plants create energy. The process by which plants take in CO2 and H2O in the presence of sunlight to produce chemical energy using Chlorophyll. Reactants = CO2 + H2O + light energy must also be present but is not considered a reactant. Products = Sugar (C6H12O6) + O2

Photosynthesis Reactants Plants get CO2 from the air through tiny holes in leaves. Plants get H2O from the ground using roots to draw it up. They get energy form the sun. (Electromagnetic) Chlorophyll is necessary for plants to carry out Photosynthesis.

Photosynthesis Products Plants release Oxygen through the same tiny holes that they take in carbon dioxide. Photosynthesis also produces sugar (C6H12O6).

Photosynthesis Sugar What is the sugar used for? To grow (stems, leaves, branches, etc.) To reproduce (fruit, seeds, shoots, pollen, etc.) For protection (poisons, toxins, armor, spikes, thorns, etc.)

Draw Photosynthesis On the back of your notes draw the process of photosynthesis.

Videos http://www.youtube.com/watch?v=JJxZH_Y5D4s&safe=active http://www.youtube.com/watch?v=eJQxHoqIPIM&safe=active

Why is Photosynthesis so important? Write down at least 2 reasons.

Why is Photosynthesis so important? It is the only way to convert the suns energy into food. The sun is the source of almost all energy on Earth. It also purifies our air taking out poisonous CO2 and replacing it with Oxygen. Without photosynthesis everyone and everything would die.