Question

4 point question: team 7 forgot to label their data while doing a leaf disc experiment where they added extra co₂ to one of their beakers. looking at their data table, explain how you know which one of these beakers had extra co₂ added.
in order to get full credit, you must do the following: • use the words photosynthesis, oxygen, sugar, water, light and carbon dioxide • connect your answer to the data in the table

	beaker #1	beaker #2	beaker #3
5 minutes	0 floating	0 floating	1 floating
10 minutes	1 floating	0 floating	4 floating
15 minutes	2 floating	0 floating	5 floating

Explanation:

Photosynthesis in leaf discs uses carbon dioxide, water, and light to produce oxygen and sugar. Oxygen production causes the leaf discs to float. Beaker #3 has more leaf discs floating over time compared to Beaker #1 and Beaker #2. Since extra carbon dioxide would enhance the rate of photosynthesis, leading to more oxygen production and more leaf discs floating, Beaker #3 likely had extra carbon dioxide added.

Answer:

Beaker #3 likely had extra carbon dioxide added because it shows a greater number of leaf discs floating over time, which is consistent with enhanced photosynthesis due to increased carbon - dioxide availability. Photosynthesis uses carbon dioxide, water, and light to produce oxygen and sugar, and the oxygen production causes the leaf discs to float.