Science Content Literacy Lesson

PHOTOSYNTHESIS

Joseph Conroy Edward Kilbourne

GLTP 503 Jamila Godin

April 21. 2011 Victoria Schemelia

D-N-A!In your journals answer the following:

1.) What is the source of energy for photosynthesis?

2.) Where in the cell does photosynthesis take place? 

3.) What is the role of plant pigments in the energy transfer process?

4.) How is energy from the sun utilized by plants for energy?

5.) What are the reactants and products in photosynthesis?

The Discovery of Photosynthesis• Over 3,000 m.y. ago- first living-organism resembling a plant appeared• 1649 Jan Baptista Van Helmont (Belgium) did the first biological experiment: precision and accuracy was

KEY• The Willow Tree ExperimentConclusion: the willow tree drew its nutrients, not from the soil but from water

• 1770’s Joseph Preistly, (British) recognized for discovering oxygen; found that a piece from a mint plants could restore the air in a container with a burning candle?

•  1979 Jan Ingenhousz, (Dutch) Hypothesis: wanted to find out whether flowers really did help cure illnesses Conclusion: only the green parts of plants cleaned the air and only when placed in strong light