A baby's head is about 1/3 its length; an adult's head is about 1/7 its length. This type of growth is called:
A) allometric growth.
B) proportional growth.
C) geometric growth.
D) isometric growth.

Question

Quizplus · Accepted Answer

The type of growth in which different body parts grow at different rates is called allometric growth. In this case, the ratio of head length to body length changes as an organism grows, leading to the observed differences in the proportion of head size between babies and adults. This is in contrast to isometric growth, in which all body parts grow at the same rate and maintain the same proportions, and geometric growth, in which growth follows a mathematical pattern. Proportional growth is a more general term that does not specifically refer to the type of growth observed in head size.

A Baby's Head Is About 1/3 Its Length; an Adult's