NEET2020BotanyPhotosynthesis in Higher PlantsActual
The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of
Options
- A1 molecule of 3-C compound and 1 molecule of a 2-C compound
- B1 molecule of 6-C compound
- C1 molecule of 4-C compound and 1 molecule of 2-C compound
- D2 molecules of 3-C compound
Correct answer
A. 1 molecule of 3-C compound and 1 molecule of a 2-C compound
Step-by-step solution
C 2 cycle or glycolate pathway operates during the daytime in C 3 plants & RuBisCO acts as oxygenase at higher concentration of O 2 and low CO 2 concentration in the C 3 -green cells. The light-dependent uptake of O 2 & release of CO 2 in C 3 photosynthetic cells is called photorespiration. R u B P   +   O 2 → L o w   C O 2   c o n c e n t r a t i o n ,   H i g h   O 2   c o n c e n t r a t i o n ,   H i g h   t e m p e r a t u r e R u B i s C O   1   P G