← Biology (4BI1)
Q1 / 5
Gas exchange in plants
Foundation
2 marks
During the day, a plant photosynthesises and respires. What gases does it absorb and release overall?
A
Net: CO₂ absorbed and O₂ released (photosynthesis exceeds respiration in daylight)
B
Only CO₂ is released — plants don't respire
C
Plants release CO₂ and absorb O₂ at all times
D
Plants absorb and release equal amounts of O₂ and CO₂
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