1. Photosynthesis
Kim Lachler
2010
NCES 6 L 1.2

2. Photosynthesis
Plants can make their own food through a process called Photosynthesis.
Photo = light
Synthesis = put together

3. Why is this important to you?
You eat the plants or the animals whom eat the plants so that you can get energy so you can play… work…LIVE!

4. Stomata First you need to know about stomata.
It is part of a leaf where the gas (carbon dioxide and oxygen) can go in and out of the plant (kind of like breathing).

5. Stoma Stoma – opening in the leaf.
Guard cell – controls the opening in the leaf.
The stomata are mainly open during the day.
Why do you think that is?
Plants need sunlight to conduct photosynthesis.

6. Transpiration Water evaporates from the stomata.
It is like the plant is sweating.
Water does not enter through the stomata. That is the job of the roots.

7. Photosynthesis It is similar to baking a cake. You need raw materials
A chemical reaction happens
And you get an end product.

8. Raw materials Cake Eggs Flour Baking soda Water Photosynthesis
Water (H2O)  roots
Carbon Dioxide (CO2)  stomata
Sunlight  leaves/green stems

9. Chemical reaction Cake Oven set at 350° F for 30 minutes.
Photosynthesis
occurs with the help of Chlorophyll
Chlorophyll:
Found in chloroplasts in the cells of the leaves
Makes leaves green

10. End Product
Cake:
Cake
(Chocolate cake, with chocolate icing, with chocolate ice cream, with…  )
Photosynthesis:
Glucose (C6H1206) = sugar = food
Oxygen (6O2)

11. Photosynthesis Chemical formula
(chlorophyll)
6 CO2 + 6 H2O + light  C6H12O6 + 6 O2

12. Why Leaves Change Color in the Fall
Plants store the glucose (sugar) in its roots for food for the winter.
Cool nights and shorten days trigger this.
The chlorophyll breaks down and the real colors of the leaves are revealed.
Eating carrots is eating stored energy in roots.

13. Quiz
Video_Quiz__Photosynthesis.mov

14. Bibliography
North Carolina Holt Science & Technology, Holt, Rinehart, and Winston, USA, 2005
Farabee, Photosynthesis, accessed 6/3/10
Discovery Education, accessed 6/10/10