Question

Arithmetic growth includes all the following except:

• A. Constant growth rate
• B. It is found in root and shoot cells
• C. Its characteristic graph is sigmoid
• D. It is expressed as $L_t=L_0+rt$

Answer 1

The correct option is C Its characteristic graph is sigmoid

S-shaped or sigmoid shape curve is obtained in case of geometric growth.

In arithmetic growth, on plotting length of the organ at different times, a linear curve is obtained. It is expressed as $L_t=L_0+rt$. In arithmetic growth, one of the daughter cells continues to divide, while the other differentiates into maturity following mitotic cell divsion. The rate of growth is constant and increase in growth occurs in arithmetic progression, i.e., 2,4,6,8,10,..
Example: Elongation of root and shoot at a constant rate.