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Photosynthesis

Photosynthesis. Kim Lachler 2010. NCES 6 L 1.2. Photosynthesis. Plants can make their own food through a process called Photosynthesis. Photo = light Synthesis = put together. Why is this important to you?.

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Photosynthesis

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

  9. 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 Chemical reaction

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

  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, http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookps.html accessed 6/3/10 • Discovery Education, http://streaming.discoveryeducation.com/ accessed 6/10/10

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