# Difference between relative growth and absolute growth?

**Absolute growth rate**and

**relative growth rate**are two ways of measuring and comparing the growth of living organisms.

**Absolute growth rate**is defined as growth per unit time (growth rate). It is obtained by dividing total growth in given period of time by that period of time.

**Relative growth**

**rate**is defined as growth in unit time per unit initial parameters. It is obtained by dividing growth in given time by initial growth.

Let us consider this with an example,Two leaves A and B has grown by $5c{m}^{2}$ in one day.Initial size of Leaf A is $10c{m}^{2}$ while that of B is $15c{m}^{2}$,Now we shall understand the absolute and relative growth:-

The two leaves (A and B) have

**same absolute growth rates**because both have same growth rate which is 5 cm

^{2}in one day.

$Relativegrowth=\frac{Growthinunittime}{InitalGrowth}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Givenvalues:-\phantom{\rule{0ex}{0ex}}GrowthforAandB=5c{m}^{2}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}InitalgrowthofA=10c{m}^{2}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}InitalgrowthofB=15c{m}^{2}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}RelativegrowthofA=\frac{5}{10}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Relativegrowth=0.5\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}RelativegrowthofB=\frac{5}{15}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Relativegrowth=\frac{1}{3}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Relativegrowth=0.33$

The two leaves have

**different**

**relative growth rates**because both have different initial growth which is 10 cm

^{2}for Leaf

**A**and 15 cm

^{2}for leaf

**B**

Hope this information will clear your doubts about topic.

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