How can we quantitatively compare the growth of living system?
Quantitative comparisons between the growth of living system can be done in two ways :
(i) By measuring and comparing the total
growth per unit time that is the absolute growth rate.
(ii) By comparing the growth of the given system per unit time expressed on a common basis that is the the relative growth rate.
The ability to follow different pathways in response to environment or phases of life to form different kinds of structure is called plasticity. For example heterophylly in coriander.