1. Plant Systems pp ,

3. How does a seed become a tree?
Plants use sunlight to synthesize organic molecules from carbon dioxide and water
The energy from sunlight is stored in the bonds that form the organic molecules

4. The organic molecules are used to build the plant and contributes to the biomass
Biomass accumulation is measured in productivity

5. Carbon + Water  Oxygen + Organic
sunlight
Carbon + Water  Oxygen + Organic
Dioxide Molecules

6. How does a plant get carbon dioxide, water, and sunlight?
Roots bring in water the plant will need
Leaves are responsible for gas exchange and absorbing sunlight

7. Roots
 Roots absorb water, anchor the plant, and store the organic molecules

8. Leaves Transpiration
The evaporation of water from plant leaves

9. Water is pulled through plants to small pores on the underside of leaves where water evaporates through stomata 
Guard cells (of stomata) close when water availability is low

10. Carbon dioxide in the atmosphere enters the plant through the stomata
Oxygen also leaves through the stomata

11. Leaves Light (energy) Absorption
Plant cells contain pigments that are responsible for absorbing specific wavelengths (color) of light

12. These pigments are called chlorophyll a, chlorophyll b, and carotenoids

14. Chloroplasts Plant cells contain small organelles called chloroplasts
Chloroplasts contain thylakoids
Pigments are located in the thylakoid membrane

15. sunlight
6CO2 + 6H2O  6O2 + C6H12O6

16. OVERVIEW OF PHOTOSYNTHESIS