alleryOxygen evolved during photosynthesis comes from
AReduction of ATP at thylakoid
BSplitting of water in PS II
CReduction of CO2 in stroma
DReduction of NADP+ in light
Answer & Solution
Correct answer: B. Splitting of water in PS II
Van Niel demonstrated, and radioisotope studies confirmed, that the O2 evolved in photosynthesis comes from water (photolysis at PS II), not from CO2. 2H2O gives 4H+ + O2 + 4e-.
Keep practising Unit 1A: Biomes, Primary Productivity and Trophic Levels
Browse all Unit 1A: Biomes, Primary Productivity and Trophic Levels questions for NEET UG, or explore more Environmental Science topics.
Related questions
The stages of the Calvin cycle in order areIn photolysis of water:Photosynthesis takes place primarily in theIn C₃ cycle, first stable product is:The C4 pathway is also known as theIn the Z-scheme, electrons removed from PS II are replenished byBlackman's Law of Limiting Factors states thatC4 plants lack photorespiration because