The given figure shows growth of two leaves over the period of one day. If, $\mathrm{AG}=$ absolute

Question

The given figure shows growth of two leaves over the period of one day. If, $\mathrm{AG}=$ absolute growth and RGR $=$ relative growth rate, then select the correct option.\

Professor PC Thomas Classes · Answer

(c) : Absolute growth rate (AGR) : Absolute growth rate is the total growth per unit time.\ Relative growth rate (RGR) : It is growth per unit time per unit initial growth.\ RGR $=\frac{	ext { Growth in given time period }}{	ext { Measurement at start of time period }}$\ AG for leaf $\mathrm{A}=10 \mathrm{~cm}^{2}-5 \mathrm{~cm}^{2}=5 \mathrm{~cm}^{2}$\ RGR for leaf $A=\frac{5}{5} 	imes 100=100 \%$\ AG for leaf $B=55 \mathrm{~cm}^{2}-50 \mathrm{~cm}^{2}=5 \mathrm{~cm}^{2}$\ RGR for leaf $B=\frac{5}{50} 	imes 100=10 \%$\ Though the absolute growth is same for both the leaves (A and B), relative growth rate is faster in leaf A because of its initial small size.