The document discusses insect development, summarizing that insects either undergo incomplete metamorphosis, where nymphs resemble adults, or complete metamorphosis, where larvae and adults differ. It notes pupae are the stage between larvae and adulthood. Societies are formed by ants, bees and termites through castes that each perform specific tasks, and pheromones affect behavior within a species. Key concepts are that insects have three body parts and undergo metamorphosis, either incomplete or complete.

1. 28-3 Insects

2. Incomplete metamorphosisType of insect development characterized by a similar appearance throughout all stages of the life cycle.

3. NymphImmature form that lacks functional sex organs and other adult structures.

4. Complete metamorphosisType of insect development in which the larvae look and act nothing like their parents and also feed completely different ways.

5. PupaStage of metamorphosis in which an insect changes from a larva into an adult.

6. PheromoneSpecific chemical messenger that affects the behavior or development of other individuals of the same species

7. societyGroup of closely related animals of the same species that work together for the benefit of the group

8. casteGroup of individual insects specialized to perform particular tasks, or roles.

9. Key conceptInsects have a body divided into three parts- head, thorax, and abdomen. Three pairs of legs are attached to the thorax.

10. Key ConceptThe growth and development of insects usually involve metamorphosis, which is a process of changing shape and form. Insects undergo either incomplete metamorphosis or complete metamorphosis.

11. Key ConceptAnts, bees, termites, and some of their relatives form complex associations called societies.