Question

a) Which pathway of photosynthesis is more efficient C3 or C4?

b) Describe briefly the 3 stages carboxylation reduction & regeneration of RuBP of Calvin cycle.​

Answer 1

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Answer 2

A)In C4 plants photorespiration does not occurs.This is because thy have a mechanism that increases the concentration of CO2 at the enzyme site.thus the C4 pathway is more efficient than C3 in the sense of carbon fixaton.

B)The Calvin cycle can be described under three stages: carboxylation, reduction and regeneration. ... In this step, carbon dioxide is utilised for the carboxylation of RuBP. The enzyme RuBP carboxylase catalyses this reaction. The reaction results in the formation of two molecules of 3-PGA.

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