In the context of insect development, what does the term nymph refer to?

The term nymph refers to a young insect in gradual metamorphosis. Insects that undergo gradual metamorphosis, also known as incomplete metamorphosis, develop through several life stages that include egg, nymph, and adult. The nymph stage typically resembles a smaller version of the adult but often lacks fully developed wings and reproductive organs. As the nymph grows, it molts several times, gradually developing into the adult form.

In contrast, an insect in complete metamorphosis would go through distinct life stages: egg, larva, pupa, and then adult. The other options like the adult stage or the egg stage do not relate to nymphs since they refer to different development phases that are not directly tied to gradual metamorphosis. Understanding nymphs is crucial for comprehending how certain insects develop and how they interact within their ecosystems throughout their life cycle.