Question

Ratio of ATP required in C3 and C4 plants to reduce 1 CO2 molecule is

1) 3:5 2) 1:1 3) 5:3 4) 3:2​

Answer 1

Answer:

In C3 pathway in Calvin cycle, one CO2 molecule require 3ATP and 2 NADPH and as the cycle turn to be six times for the formation of one glucose molecule 18 ATP and 12 NADPH are required while in C4 plant one CO2 molecule needs 5 ATP molecule as the process occurs in mesophyll cells to bundle sheath cells and came back