Published by:
CGP EDU Academic Team
Published on: August 21, 2026
What will be the product formed by the RuBisCO enzyme in 
plants?
(I) When the 
ratio is lower (higher 
than 
)
(II) When the 
ratio is nearly equal
Text Solution
Verified by ExpertsThe correct answer is:
B
In 
plants, a special mechanism (Hatch-Slack pathway) concentrates 
at the RuBisCO site in bundle sheath cells. This suppresses oxygenase activity of RuBisCO, so even if external 
ratio is low or nearly equal, RuBisCO acts only as carboxylase → producing two molecules of 3-phosphoglycerate (3PGA).
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