| | | | | through small holes called stomata. Here the water |
| | | | | and gas mingle and in the presence of chlorophyll the |
| Photosynthesis is the most important chemical | | | | photosynthetic reaction occurs. |
| reactions taking place Earth, this is the process were | | | | |
| energy from the sun is transformed by plants into | | | | This reaction is splits water into hydrogen and |
| energy in the form of food. It is the very basis of | | | | oxygen, the oxygen is released into the atmosphere |
| life itself. | | | | through the stomata. The hydrogen, through |
| | | | | another series of reactions, is converted to a simple |
| Chlorophyll, the green pigment of plants, occurs in | | | | hydrocarbon which forms the basis of |
| several forms, but it is the chlorophyll day in the leaf | | | | carbohydrates. These carbohydrates are then |
| that is the principal agent bringing photosynthesis | | | | transported mainly in the form of sugars, from the |
| about. The other essential element that is needed, | | | | leaves to the rest of the tree. |
| is water, this contains dissolves minerals salts; it | | | | In the roots of the sugars are converted to starch |
| brought belief by the roots through vessels that run | | | | and stored. Some sugars can be converted into oils |
| the length of the tree trunk. A leaf is able to into | | | | and resins and stored throughout the tree. Both |
| itself towards the Sun to obtain maximum light for | | | | starch and oil can be reconverted to sugars when |
| this chemical reaction. | | | | required and transported through the body of the |
| | | | | tree to provide food and energy for new growth. |
| Carbon dioxide from the atmosphere enters the leaf | | | | |