Spadefoot Toads can develop into 2 different morphs, one is carnivorous, and the other omnivorous. In ordered to develop into the carnivorous morph, the jaw develops at a faster growth rate than the rest of the body; this is an example of:

Answer: Allometry

Explanation:

Allometry explains how the body parts grow at different rates such that the jaw of the spadefoot toads develop it's jaw at a rapid rate than other body parts.

Thus, the differential growth rate shown in the carnivorous morph is to aid feeding and hence survival.