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Science Arthropods section 3 notes
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13
Science
7th Grade
04/23/2012

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Term
What has jointed appendages, bilateral symmetry, segmented bodies, an exoskeleton, a body cavity, a digestive system with 2 openings, and a nervous system; most species have separate sexes
Definition
arthropods
Term
Some arthropods have many segments, while others have fused segments forming what?
Definition
body regions
Term
What is a hard, thick, outer covering that supports and protects the arthropod? Its shed and replaced occasionally in a process called molting
Definition
exoskeleton
Term
How many body regions do an insect have?
Definition
3
Term
What does an insect's head have?
Definition
pair of antennae, eyes, and a mouth
Term
series of body changes as insects become adults
Definition
metamorphosis
Term
egg, nymph, adult
Definition
incomplete metamorphosis stages
Term
egg, larva, pupa, adult
Definition
complete metamorphosis stages
Term
What do insects eat?
Definition
plants, blood of animals, nectar, decaying materials, wood, and clothes
Term
How many body regions do arachnids have?
Definition
2
Term
What do scorpions have?
Definition
a sharp, poison filled stinger at the end of their abdomen
Term
What do spiders inject their prey with to digest it?
Definition
enzymes
Term
What do ticks often carry?
Definition
diseases
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