Photosynthesis Lab (Elodea)

Explain why the color of test tube B changed/stayed the same. Be sure to mention light, CO2, and if photosynthesis occurred.

Sentence Starter: Test tube B turned (blue/yellow) because carbon dioxide was (high/low) due to

Explain why the color of test tube C changed/stayed the same. Be sure to mention light, CO2, and if photosynthesis occurred.

Relate your results to the peat/permafrost system. How does the color change in your test tubes help you explain how there could have been so many plants in the Arctic that died and became the peat that is there today?

What is the color of test tube A (indirect light)

What is the CO2 level in test tube A (indirect light)

What is the color of test tube B (direct light)

What is the CO2 level in test tube B (direct light)

What is the color of test tube C (direct light in foil)

What is the CO2 level in test tube C (direct light in foil)

What is the color of test tube D (indirect light in foil)

What is the CO2 level in test tube D (indirect light in foil)

Was the hypothesis, If there is more sunlight then plants will use/take in more CO2 supported by the lab results