Question

In arithmetic growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures. The simplest expression of arithmetic growth is exemplified by a root elongating at a constant rate. On plotting the length of the organ against time, a linear curve is obtained, as seen in the graph. Mathematically, it is expressed as–

• A. L_t = L₀ + rt (L_t = Length at time ‘t’ L₀ = length at time ‘zero’ r = growth rate/elongation per unit time).
• B. L_t = L₀ e^rt
• C. L_t = L₀ + rt or L_t = L₀ e^rt
• D. L_t = 2 × L₀

Answer 1

Answer: (A)

L_t = L₀ + rt (L_t = Length at time ‘t’ L₀ = length at time ‘zero’ r = growth rate/elongation per unit time).