Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

Presence of photorespiration is considered as a wasteful and energy consuming process in crop plants which ultimately leads to reduction in final yield of crops. It is estimated that during $C_3$ photosynthesis, upto $50\%$ of the ${\mathrm{CO}}_2$ fixed may have to pass through photorespiratory process, thereby resulting in considerable decrease in photosynthetic productivity. In ${\mathrm{C}}_3$ plants, there is little loss of photosynthetic activity on account of photorespiration which is absent in $C_4$ plants and hence they have better productivity.