The instrument by which the rate of growth of a stem is accurately measured is:

Efficiency index in the exponential phase of geometrical growth is the ability of plants to produce.

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

Arithmetic growth can be expressed as $......$ and geometric growth can be expressed as $......$.

Two seeds are germinated,$A$ in light and $B$ in dark. Which of the two grows much taller in the initial stage?

Deposition of new materials inside the cell wall of cells starts in