The graph of organ size/weight versus time for the given growth shows a sigmoid curve.

Different growth phases result in a

Shock movement in 'touch-me-not' plant is

The rate of growth of any organism follows

After four successive mitotic divisions of a cell,in an arithmetic growth pattern,the total number of cells that have lost the ability of cell division is . . . . . . .

Describe briefly:
$(a)$ Arithmetic growth
$(b)$ Geometric growth
$(c)$ Sigmoid growth curve
$(d)$ Absolute and relative growth rates