Back up a bit! <ul><li>Photosynthesis takes place in chloroplasts. Remember our first unit lesson about chloroplasts? Chloroplasts contain the chlorophyll that capture light from the sun. </li></ul><ul><li>How many chloroplasts does a plant have? </li></ul><ul><li>Some plants have very few chloroplasts, and others, like tree leaves, can have more than fifty! </li></ul>
Step 1 <ul><li>Light strikes the chlorophyll and energy is used to split apart water molecules into hydrogen and oxygen. </li></ul>
Step 2 <ul><li>Hydrogen joins with carbon from carbon dioxide and forms sugars. </li></ul>
Step 3 <ul><li>Oxygen gas is released into the atmosphere. </li></ul>
How do plants eat the sugar? <ul><li>The plant stores sugars in its tissues and breaks them down. </li></ul><ul><li>When the plant is hungry and needs energy it uses the stored energy. </li></ul>
Why are plants green? <ul><li>Chlorophyll absorbs most colors of light, but not green! When the sunlight hits chlorophyll green light is reflected back to your eye! </li></ul>
Where are the chloroplasts? <ul><li>Leaves hold most of the plant’s chloroplasts. The leaves are the food factory of a plant! </li></ul>=
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.