Question

Mathematically arithmetic growth is expressed as $L_t=L_0+rt$ In this equation 'r' represents

• A. Length at time 't'
• B. Length at time '0'
• C. Elongation per unit time
• D. Reduced growth at time 't'

Answer 1

The correct option is C

Elongation per unit time

The simplest expression of arithmetic growth is exemplified by a root elongating at a constant rate. On plotting the length of elongating tissue against time a linear curve is obtained. Mathematically it is expressed as $L_t=L_0+rt$, where Lt= length at time 't', $L_0=$ length at time '0' and r=growth rate/elongation per unit time .