C4 pathway is advantageous over C3 pathway in plants as it
occurs in relatively low CO2 concentration
uses more amount of water
occurs in relatively low O2 concentration
is less efficient in energy utilisation
A.
occurs in relatively low CO2 concentration
Plants with the C4 pathway has many advantages over a plant with a C3 pathway. When the weather is hot, acid, dry, the leaves close their stomata to eliminate water less whereas in C3 plants this closure results in low carbon dioxide concentrations and ultimately both loss of RuBP and inhibition of the Calvin-Benson cycle by photorespiration.
There are no such disadvantages in a C4 plant during hot, dry weather. Even with its stomata are closed, carbon dioxide is fixed because of the efficiency of REP carboxylase in trapping and concentrating carbon dioxide. Consequently, the Calvin-Benson cycle continues to produce glucose and there is no loss of chemical energy through photorespiration.
