Plant Growth and Development

Biology · Class 11

Simulation · Biology · Class 11

Absolute or relative growth?

From the lesson Absolute and relative growth rate in Plant Growth and Development. Change the values and watch what happens.

Absolute or relative growth?Biology · Class 11

The idea behind it

NCERT §13.1.4

  • Growth of two living systems can be compared in two ways.
  • Absolute growth rate: the total growth per unit time, measured and compared as it is.
  • Relative growth rate: growth per unit time expressed on a common basis, for example per unit of the initial parameter.
  • Two leaves of different sizes, A and B, may each gain 5 cm² of area in the same time. Their absolute growth rates are equal, but the smaller leaf has the much higher relative growth rate, because 5 cm² is a larger fraction of its starting area.