HORTICULTURE

Detailed explanation-1: -As we the photosynthesis occur first the electron transport and then the carbon fixation. So to make up the glucose phosphate we will require 6Co2 molecule. So according to the above observation, we will require 6×8=48 photons.

Detailed explanation-2: -To fix one CO2 molecule, it is needed, at best, 8 photons! To make a glucose molecule, it is needed 6 CO2, therefore it is need at least 48 photons. Why do some molecules absorb photons and re-emit them while others absorb them and do not re-emit them?

Detailed explanation-3: -Updated On: 27-06-2022. Six molecules of CO2 are required to synthesise on emolecule of glucoses each of which undergoes a C3 cycle Hence, 6 molecules of CO2 synthesis a glucose molecule after 6 turns of Calvin cycle.

Detailed explanation-4: -Excited electron energy is subsequently utilised in ATP synthesis. Unlike in the case of ordinary chemical reactions, ATP synthesis cannot be stoichiometrically analysed. Experimental data indicates that between 8 and 12 photons are required for fixation of one molecule of CO2.