It was not until after World War II that scientists pieced together the story of how plants join carbon dioxide to a sugar to create food.
This happens through a set of steps that today are called the Calvin Cycle.
- Green plants are the only living things which can make their own food.
- This process is called photosynthesis
- Leaves are green in colour because they contain chlorophyll.
- Chlorophyll is needed in photosynthesis.
What does the plant need ?
For photosynthesis to take place a plant needs :
- Carbon dioxide from the air
- Light from the sun
- Water from the rain
- Chlorophyll from the leaves
What then … ?
- When the plant has all of these things …
… photosynthesis can take place.
- The plant produces sugar and oxygen.
A closer look at photosynthesis
2. Light in
1. Carbon dioxide in
3. Water in
4. Chlorophyll is already in green leaves