Probes were inserted into the jars to track O2 and CO2 levels. What can be concluded from the following data?
Plant A- 0 min 5 min 10 min 15 min
%CO2 - 0.09 0.03 0.02 0.02
%O2- 18.15 18.23 18.25 18.25
Plant B- 0 min 5 min 10 min 15 min
%CO2- 0.09 0.02 0.01 0.005
%O2 - 18.15 18.25 18.27 18.27
a. Plant A is receiving less light than Plant B and is performing photosynthesis slower.
b. Plant A is a C4 plant. Plant B is a CAM plant.
c. Plant A is smaller than Plant B and has fewer leaves to perform photosynthesis.
d. Plant A is smaller than Plant B and uses up the supply of CO2 slower.
e. Plant A is performing photorespiration. Plant B is a C4 plant.
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You can conclude E. Plant A is likely a C3 plant and thus at low levels of CO2 it with have high rates of photorespiration, which is why the CO2 doesn't drop in the last 5 minutes. C4 plants concentrate CO2 and are able to photosynthesize as lower levels of CO2 and have very little photorespiration.
e. Plant A is performing photorespiration. Plant B is a C4 plant.