Photosynthesis

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Photosynthesis

• or
• How Plants Make Food

2
Energy from the Sun is necessary to begin the
process.
Besides green plants, some algae and bacteria can
also make their own food.
3
Radiant energy from the Sun, in the form of
light, begins photosynthesis.
Chlorophyll must also be present.
4
Water is taken into the plant by the roots and
carried to the leaves through the xylem .
Xylem is a series of tubes.
5
Carbon dioxide gas (CO2) is taken into the plant
through the stomata on the underside of leaves.
6
Oxygen gas (O2) is released into the atmosphere
through the stomata on theunder side of leaves.
7
During photosynthesis, radiant (light) energy
from the Sun is converted into chemical energy
through a chemical reaction. The glucose (a type
of sugar) that is produced is used both to keep
the plants alive and stored by plants to be used
by animals that then eat the plants.
8
Water vapor is released into the atmosphere
through the stomata on the leaves.
This process is called transpiration.
9
Review the process.
Explain each step as it is shown.
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Remember, this process is continuous in light.