My Photolab Data and Conclusion

Question: How does the color of light affect photosynthesis in increased CO2?

Hypothesis: If color affects the photosynthesis process of plants, then photosynthesis will differ under different colored lights.

Controls: power (50), time (20 secs), temp (25), increased CO2

Independent Variable: color of light

Dependent variable: number of O2 bubbles

	TRIAL 1	TRIAL 2	TRIAL 3
Color of Light	# of O2 bubbles	# of O2 bubbles	# of O2 bubbles	AVERAGE
white	22	23	22	22.3
orange	18	17	18	17.6
green	7	7	7	7
blue	21	20	20	20.3

Conclusion

In this lab, I questioned whether the color of light would affect photosynthesis in a plant that is placed in increased carbon dioxide. I found that photosynthesis occurs best under white light, which had an average of 22.3 oxygen bubbles per 20 seconds, and barely occurs under green light, which had an average of 7 oxygen bubbles per 20 seconds. This data supports our claim because photosynthesis did differ under different colored lights.

This lab was done to demonstrate the effect of light on plants. From this lab, I have learned that white light helps photosynthesis best, which helps me understand how plants grow and what they use. Based on my experiences from this lab, I can now grow better plants and flowers and if I ever own a greenhouse, I can grow strong, large plants.