What distinguishes the immature stage from the mature stage of a grasshopper?
a. size
b. having an exoskeleton
c. building a cocoon
d. providing for themselves

The right answer is A. size. An immature grasshopper is called a nymph. When it first emerged from an egg, it already resembles an adult grasshopper but is considerably smaller; they also lack wings and reproductive parts. The nymph will gradually increase in size as it grows older. After molting (shedding of exoskeleton) five times, the nymph is considered an adult grasshopper.

A. mitochondrion b. nucleus