Growth in Humans and Animals (1)

Growth in organisms

Irreversible, permanent process that involves the increase in the number of cells, size, volume and weight of the organism’s body

Growth of insects

Organisms with exoskeletons like insects undergo growth differently compare to humans

2 types of insects growth

Complete metamorphosis and incomplete metamorphosis

Growth curve

This curve is obtained by plotting growth parameters against time and it can show the growth pattern of the organism

Sigmoid growth curve

The growth curve that is common for organisms and consists of 6 phases

Phases in sigmoid growth

The lag phase, exponential phase, stationary phase, maturity phase, senescence and death phase

Lag phase

It is an adaptation phase and the growth rate is low because it involves cell division and little cell elongation

Exponential phase

The fastest growth rate, division and elongation of cells occur actively and this leads to an increase in the size of the organism

Fasa pertumbuhan perlahan

Growth rates are slow and occur at a constant rate, cells reach maximum size and experience differentiation to form specialized cells

Maturity phase

The organism reaches a mature stage and the growth rate is zero, cell division occurs to replace damaged or dead tissue