19. Plants need energy to
grow
• Plants need energy to grow
• Plants get energy from the sun
• Plants use energy to carry on
the process of photosynthesis
20.
21. Plants need sunlight for
photosynthesis
• Cells in the plant trap
light energy from the sun
• Plants use the sun’s
energy to change carbon
dioxide and water into
sugar
• The plant uses the simple
sugars to help it grow
22. The chlorophyll absorbs the sunlight. Plants’ leaves contain
chlorophyll
Chlorophyll (green color) Chlorophyll is needed for photosynthesis
25. Plants have tiny holes in the bottom of each leaf
The tiny holes let air go in and out of the leaf
Plants use a gas in the air called carbon dioxide
Plants release oxygen back into the air
CO2
26.
27. Plants need water for
photosynthesis
• Plants get water from
the soil
• Roots bring water from
the soil to the plant
• Water is needed for the
cells of the plant to
carry on
photosynthesis