Similarity between C₃ and C₄ pathway is

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

organic acid is formed as the first product of CO₂ fixation

PEP carboxylase is required in both the pathways

Decarboxylation of 4C organic acids occur in both the pathways

both takes place in all plants

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The similarity between C₃ and C₄ pathways is that in both cases, organic acids are formed as the first products of CO₂fixation, although the specific organic acids differ.

In C₃ photosynthesis, the first product of CO₂ fixation is a 3-carbon compound called 3-phosphoglycerate (3-PGA). This reaction occurs in the Calvin cycle, which takes place in the stroma of the chloroplasts.

On the other hand, in C₄ photosynthesis, the first product of CO2 fixation is a 4-carbon compound, usually oxaloacetate or malate. This initial fixation of CO₂occurs in the mesophyll cells, where the enzyme phosphoenolpyruvate carboxylase (PEP carboxylase) captures CO₂and converts it into the 4-carbon compound.

Watch 3-min video & get full concept clarity