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Biology
WCHS Biology Chapter 28
| Word | Definition |
|---|---|
| Appendage | any structure, such as a leg or an antenna, that grows out of an animal's body |
| Molting | in arthopods, the periodic shedding of an old skeleton |
| Cephalothorax | structure in some arthopods formed by the fusion of the head and thorax |
| Tracheal Tube | hollow passages in some arthopods that transport air throughout the body |
| Spiracle | in arthopods, openings on the thorax and abdomen through which air enters and leaves the tracheal tubes |
| Book Lung | gas exhange system found in some arthopods wehere air-filled chambers have plates of folded membranes that increase the surface area of tissue exposed to the air |
| Pheromone | chemical signals given off by animals that signal animals to engage in specific behaviors |
| Simple Eye | visual structure in arthopods that uses one lens to detect light and focus |
| Compound Eye | in arthopods, a visual system composed of multiple lenses; each lens registers light from a small portion of the field of view, creating an image composed of thousands of parts |
| Mandible | in most arthopods, mouthparts adapted for holding, chewing, sucking, or biting various foods |
| Malpighian Tubule | in arthopods, tubules located in the abdomen that are attached to and empty waste into the intestine |
| Parthenogenesis | type of asexual reproduction in which a new individual develops from an unfertilized egg |
| Chelicerae | first pair of an arachnid's six pairs of appendages; located near the mouth, they are often modified unto pincers or fangs |
| Pedipalp | second pair of an arachnid's six pairs of appendages that are often adapted for handling food and sensing |
| Spinneret | silk-producing glands located at the rear of a spider |
| Metamorphosis | in insects, series of chemically-controlled changes in the body structure from juvenile to adult; may be complete or incomplete |
| Larva | in insects, the free-living, wormlike stage of metamorphis, often called a caterpillar |
| Pupa | stage of insect metamorphsis where tissues and organs are broken down and replaced by adult tissues; larva emerges from pupa as a mature adult |
| Nymph | stage of incomplete metamorphsis where an insect hatching from an egg has the same general appearance as the adult insect but is smaller and sexually immature |
Created by:
dmoudy
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