Question

multiple choice question
which of the following is a difference between c₄ and cam plants?
o c₄ plants also use c₃ photosynthesis, while cam plants do not use c₃ photosynthesis.
o cam plants can also generate atp from photophosphorylation at night, while c₄ plants cannot.
o c₄ plants use c₃ photosynthesis in different cells, while cam plants use c₃ photosynthesis at certain times.

Explanation:

Both C4 and CAM plants use C3 photosynthesis. C4 plants separate the initial carbon - fixing step and the C3 cycle in different cells (mesophyll and bundle - sheath cells). CAM plants open their stomata at night to take in CO2 and fix it into an organic acid, and then use C3 photosynthesis during the day when stomata are closed. They don't generate ATP from photophosphorylation at night as there is no light for the light - dependent reactions.

Answer:

C. C4 plants use C3 photosynthesis in different cells, while CAM plants use C3 photosynthesis at certain times.