Question

Assertion: During arithmetic growth there is growth at constant rate.
Reason: During arithmetic growth, after mitosis, both the daughter cells retain the capacity to divide continuously.

• A. Both assertion and reason are true and reason is the correct explanation of assertion.
• B. Both assertion and reason are true but reason is not the correct explanation of assertion.
• C. The assertion is true but reason is false.
• D. Both assertion and reason are false.

Answer 1

The correct option is C The assertion is true but reason is false.

Arithmetic growth is a type of growth in which the growth rate of an organism remains constant and increase in growth occurs in arithmetic progression. It is found in roots or shoots of plants elongating at a constant rate.

During arithmetic growth, the cells divide in such a fashion that one daughter cell retains the capacity to divide further while the other cell grows and differentiates. The process continues. Mathematically it is expressed as
$L_t=L_0+rt$
$L_t$ = length after time t
$L_0$ = length at the beginning
r= growth rate
On plotting growth against time, a linear curve is obtained.