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Glossary of Biology (Chapter 14-15) Invertebrates

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Tracheae
Tiny tubules in insects and some arachnids that carry air for respiration
Spiracles
Small pores in and insects body that function in breathing
Malpighian Tubules
Numerous threadlike tubules in insects that extract wastes from the blood and empty them into the intestines.
Tympanum
A membrane-covered chamber in the first abdominal segment
Compound Eyes
Eyes composed of many individual lenses
Ovipositor
A pointed extension formed off the last segment of a female's abdomen, used to deposit eggs.
Incomplete Metamorphosis
The line of development followed by such land insects: grasshoppers, cicada, and true bugs. (egg, nymph and adult)
Nymph
Hatches from egg, looks like a miniture, oddly proportioned adult. No wings and it isn't sexually mature yet.
Naiad
The immature stage, of an insect, that lives in water
Complete Metamorphosis
The process of development followed by almost 90% of all insects. (egg, larva, pupa and adults)
Orthoptera
"Straight Wing", grasshoppers, crickets, etc.
Coleoptera
"Sheath Wing", Beetles and Weevils
Diptera
"Two Wings", Flies, Mosquitos and Gnats
Lepidoptera
"Scale Wing", Butterflies, Moths
Hymenoptera
"Membranous Wing", Bees, Ants and Wasps
Gastric Cece
Finger-shaped organs attached to an insects stomach that secrete enzymes for digestion of foods.
Salivary Glands
Glands that secrete a fluid to moisten food before it gets digested.

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