How many quanta of lights are required to evolve one oxygen molecule in photosythesis?

Three

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Eight

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Four

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Two

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Eight
The quantum of light required in photosynthesis is 8 photons for one molecule of oxygen to be evolved. In this, 4 photons are required by photosystem II and 4 by photosystem I. The equation for the same is,
2 x 2H $_{2}$ O --> 4H $^{+}$ + O $_{2}$ + 4 electrons.
Thus, the correct answer is 'Eight.'

Suggest Corrections