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Zoology Unit 6
Zoo Unit 6 Arthropods
| Question | Answer |
|---|---|
| phylum arthropoda | group of invertebrate animals with jointed appendages and an exoskeleton |
| subphylum chelicerata | group of animals with with several different appendages including chelicerae, pedipalps, and 4 pairs of walking legs |
| class arachnida | group of arthropods that are predaceous, have fangs, and spinnerets for spinning a silk web |
| subphylum crustacea | group of arthropods with tagmata, gills for respiration, biramous appendages, chelipeds, walking legs, and swimmerets |
| subphylum uniramia | group of arthropods with uniramous appendages, 3 major tagmata, and one pair of antennae |
| class insecta | most numerous of all arthropods with 3 pairs of legs and usually 2 pairs of wings |
| order orthoptera | insect group including grasshoppers, crickets, and walking sticks |
| order isoptera | insect group including termites |
| order hemiptera | insect group including the true bugs |
| order homoptera | insect group including aphids and leafhoppers |
| order coleoptera | insect group including beetles, fireflies, and weevils |
| order lepidoptera | insect group including butterflies and moths |
| order diptera | insect group including true flies |
| order hymenoptera | insect group including bees, wasps, and ants |
| exoskeleton | hard outer covering of an arthropod |
| tagmata | when body segments are fused together into larger structures |
| pedicel | constricted abdomen of a spider |
| pheromones | chemicals released by insects for communication purposes |
| oviparous | female lays fertilized eggs which hatch after being laid |
| book lungs | air pockets that extend into a blood-filled chamber, air enters through a slit in the body wall |
| myriapods | belong to subphylum uniramia, have "many feet" (centipedes and millipedes) |
| foregut | part of insect digestive tract including the mouth, esophagus, crop and gizzard |
| hindgut | part of insect digestive tract including the intestine, rectum, and anus |
| midgut | part of insect digestive tract including the stomach and gastric ceca |
| ovoviviparous | female has eggs develop internally and they hatch either internally or shortly after release |
| spiracles | tiny holes allowing air to enter the trachea system of an arthropod |
| entomology | the study of insects |
| ecdysis | shedding or molting of the outer cuticle |
| trachea | system of air tubes that carry air directly to tissues from spiracles |
| diapause | resting stage in an insect's life |
| phytophagous | insects that feed on plant juices and tissues |
| saprophagous | insects that feed on dead animals |
| predaceous | animals that kills and eats other animals |
| hyperparasitism | insects that parasitize other parasitic insects |
| holometabolous | insect egg develops into a larvae, then a pupa, and then an adult |
| hemimetabolous | insect egg develops through multiple nymph stages and molts until reaching adult stage |
| setae | structures used by spiders to sense air currents and changes in web tension |
| antennule | smaller antennae found in crustaceans |
| cephalothorax | the fused head and chest region of crustaceans and arachnids |
| cheliped | claw foot, found in crustaceans |
| tympanum | the ear (eardrum) of an insect |
| ovipositor | egg laying structure of an insect such as a grasshopper |
| gastric ceca | the digestive organ of an insect that releases digestive enzymes, working alongside the stomach |
Created by:
Mrs. Meeks SHS
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