WHY DO PLANTS PHOTOSYNTHESISE?-WHAT WE ALREADY KNOW.

1. PLANTS TAKE IN CARBON DIOXIDE DURING PHOTOSYNTHESIS.

2. CARBON DIOXIDE ENTERS THROUGH THE STOMATA WHEN IT IS ABSORBED.

3. CHLOROPLASTS IN PLANT CELLS CONTAIN CHLOROPHYLL WHICH TRAPS LIGHT.

4. LIGHT ENERGY IS NEEDED FOR PHOTOSYNTHESIS.

5. PHOTOSYNTHESIS STARTS HAPPENING ONCE A SEEDLING GROWS LEAVES.

6. CHLOROPHYLL, A GREEN PIGMENT, IS NEEDED FOR PHOTOSYNTHESIS

7. WATER IS NEEDED FOR PHOTOSYNTHESIS.