Chromatography- Pigment separation of spinach leaves.

Rf- refraction index – a ratio of distance traveled by a pigment in chromatography.

1.What is meant by a wavelength of light? Which is the longest? The shortest? 2.Why is green light the least effective wavelength for growing plants? 3.Which organelle is the site of photosynthesis? 4.Name some plant pigments. 5.Why do leaves “change” color in the fall? 6.Which organelle does the chloroplast resemble and why? 7.What happens when a plant is deprived of: Sunlight Water Co2 Proper temperature

Photosynthesis questions continued. Homework 5 B Due this Friday Nov Where are stomates found? What is their function? 2.Why is the upper epidermis of a leaf often coated in a waxy cuticle? 3.Name the carbohydrates produced by plants (there are four). 4.Why are conifer (evergreen) leaves needle- shaped? 5.Who was Joseph Priestly and what was his famous experiment? State the hypothesis! 6. Write 3 paragraphs discussing photosynthesis: 1. Introduction, tell about the structure of leaves and chloroplasts 2. Summarize the light and light independent reaction. 3. State the formula for photosynthesis and tell which factors affect the rate at which it occurs.

Which protein can be denatured if the above conditions are not optimal? What is the formula for photosynthesis? What are the reactants? Products? Why is sunlight necessary? Where does the O2 come from? What 3 things occur in the light reaction? Why is the light reaction necessary for the dark reaction to begin?