Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because

Question

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (A) there is effective pumping of CO2 into bundle sheath cells (B) RuBisCO in C4 plants has higher affinity for CO2 (C) six carbon acids are the primary initial CO2 fixation products (D) the primary fixation of CO2 is mediated via PEP carboxylase

Tardigrade Admin · Accepted Answer

CO2 acceptor molecule in C4 plants is phosphoenol pyruvate (PEP). C4 plants are more efficient in picking up CO2 even when it is found in low concentration because of high affinity of PEP. PEP carboxylase (PEPcase) is the key enzyme which catalyses the primary fixation of CO2.

Q. Photosynthesis in C₄ plants is relatively less limited by atmospheric CO₂ levels because

there is effective pumping of CO₂ into bundle sheath cells

RuBisCO in C₄ plants has higher affinity for CO₂

six carbon acids are the primary initial CO₂ fixation products

the primary fixation of CO₂ is mediated via PEP carboxylase

CO₂ acceptor molecule in C₄ plants is phosphoenol pyruvate (PEP). C₄ plants are more efficient in picking up CO₂ even when it is found in low concentration because of high affinity of PEP. PEP carboxylase (PEPcase) is the key enzyme which catalyses the primary fixation of CO₂.

Q. Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because

there is effective pumping of CO2 into bundle sheath cells

RuBisCO in C4 plants has higher affinity for CO2

six carbon acids are the primary initial CO2 fixation products

the primary fixation of CO2 is mediated via PEP carboxylase