<P> Lipid membranes are much less permeable to bicarbonate than to carbon dioxide . To capture inorganic carbon more effectively, some plants have adapted the anaplerotic reactions </P> <Dl> <Dd> HCO + H + PEP → OAA + P </Dd> </Dl> <Dd> HCO + H + PEP → OAA + P </Dd> <P> catalyzed by PEP carboxylase (PEPC), to carboxylate phosphoenolpyruvate (PEP) to oxaloacetate (OAA) which is a C dicarboxylic acid . </P>

Which part of a plant allows it to take in carbon dioxide