What Would Be the Expected Effect on Plants If the Atmospheric

Multiple Choice

What would be the expected effect on plants if the atmospheric CO₂ concentration was doubled?

A) All plants will experience increased rates of photosynthesis.
B) C3 plants will have faster growth; C4 plants will be minimally affected.
C) C4 plants will have faster growth; C3 plants will be minimally affected.
D) C3 plants will have faster growth; C4 plants will have slower growth.