1. WHAT DO ALL OF THESE PLANTS HAVE IN COMMON?

2. Energy for Life All living things require energy to grow and reproduce
They get that energy by making it, eating it, or absorbing it

3. Glucose
Most living things on Earth break down glucose to get their energy
Autotrophs (plants) use a process called photosynthesis to make glucose
Heterotrophs (animals) eat and then digest food to produce glucose

4. Glucose Glucose is a monosaccharide which means one sugar
There are many different models to describe glucose

5. Photosynthesis
The process by which plants, and some other organisms, use radiant energy, carbon dioxide and water to make glucose and oxygen.
Glucose is stored in leaves, stems and roots
Oxygen is given off as a waste

6. Energy Conversion
Through photosynthesis plants and some other organisms convert
radiant energy chemical energy
(from the sun) (stored as glucose)
and
energy (light) matter (leaves,
stem, bark)

7. Photosynthesis Equation
6CO2 + 6H2O C6H12O6 + 6O2
carbon dioxide
water
glucose
oxygen
Sunlight
Chlorophyll
Reactants
Products

8. Photosynthesis
Once the plants produce glucose, they store it until needed.
When they need energy, the glucose is broken down to release the energy inside.

9. Leaf Anatomy Sunlight can enter through the leaf’s surface
For water and carbon dioxide to enter, and oxygen to exit, leaves need a “doorway”

10. Leaf Anatomy
Stomata
Openings in the underside of the leaf that act as doorways for raw materials and waste to enter and exit the leaf
Usually open during the day and closed at night

12. Plant Cell
Chloroplasts

13. Chloroplast
Small, green body inside the plant cell where photosynthesis takes place
Chloroplasts can move inside the plant cell to get closer to light

14. Pigments
Chemical compounds that give things color

15. Chlorophyll
Green pigment found in plants where photosynthesis takes place
Plants can produce more chlorophyll when they get more sunlight
Photosynthesis only occurs in plant cells that have chloroplasts

16. All plants with green areas can produce food through photosynthesis.
Do you think anything else can use photosynthesis?
photosynthetic bacteria
photosynthetic plankton
algae

17. Energy for Life Plants provide food for the entire planet
provide 90% of Earth’s oxygen
filter out carbon dioxide
Why is it important to save trees?

18. glucose
chlorophyll