Figure 10.3
-How is photosynthesis similar in C₄ and CAM plants?
A)In both cases, only photosystem I is used.
B)Both types of plants make sugar without the Calvin cycle.
C)In both cases, rubisco is not used to fix carbon initially.
D)Both types of plants make most of their sugar in the dark.
E)In both cases, thylakoids are not involved in photosynthesis.

Question

Figure 10.3 
-How is photosynthesis similar in C₄ and CAM plants?
A)In both cases, only photosystem I is used. 
B)Both types of plants make sugar without the Calvin cycle. 
C)In both cases, rubisco is not used to fix carbon initially. 
D)Both types of plants make most of their sugar in the dark. 
E)In both cases, thylakoids are not involved in photosynthesis.

Quizplus · Accepted Answer

Both C₄ and CAM plants initially fix carbon using a different enzyme (PEP carboxylase) before using rubisco in the Calvin cycle. This allows them to minimize photorespiration and increase efficiency in low CO₂ conditions.

Figure 10.3 -How Is Photosynthesis Similar in C₄ and CAM Plants