Absolute vs Relative Growth Rate — NEET Biology
📚 Practice ConceptQuantitative comparisons between the growth of living system can also be made in two ways: (i) measurement and the comparison of total growth per unit time is called the absolute growth rate. (ii) The growth of the given system per unit time expressed on a common basis, e.g., per unit initial parameter is called the relative growth rate. In two leaves, A and B, are drawn that are of different sizes but shows absolute increase in area in the given time to give leaves, A¹ and B¹. However, one of them shows much higher relative growth rate. Which one and why?
Which of the following statements regarding the comparison of growth rates are NOT correct? S1: If leaf X has an initial area of 10 cm² and increases to 20 cm², its absolute growth rate is 10 cm² per unit time. S2: For leaf X (initial area 10 cm²), its relative growth rate after increasing to 20 cm² is 100%. S3: If leaf Y has an initial area of 100 cm² and increases to 110 cm², its absolute growth rate is higher than leaf X. S4: Comparing leaf X and leaf Y, leaf Y would exhibit a higher relative growth rate due to its larger initial size. S5: Relative growth rate is calculated by expressing the growth of a system per unit time on a common basis, typically per unit initial parameter.
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