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Refer to the Figure Showing Delta Values for Plants Using

Question 44

Multiple Choice

Refer to the figure showing delta values for plants using three different biochemical pathways for photosynthesis.
Refer to the figure showing delta values for plants using three different biochemical pathways for photosynthesis. Which of these types of plants shows the most negative delta value, that is, the greatest discrimination against the uptake of <sup>13</sup>C? A) C<sub>3</sub> plants only B) C<sub>4</sub> plants only C) C<sub>3</sub> and CAM plants D) C<sub>4</sub> and CAM plants Which of these types of plants shows the most negative delta value, that is, the greatest discrimination against the uptake of 13C?


A) C3 plants only
B) C4 plants only
C) C3 and CAM plants
D) C4 and CAM plants

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