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10 terms

Animal Phyla : Arthropods

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exoskeleton
external skeleton that protects the animal from its environment and other pray. like a shell
invertebrate
a animal that doesn't have a back bone
appendages
legs or antennae that grow out of the body of an animal. they are used for sensing, walking, feeding, and mating.
molting
shedding the exoskeleton and secreting a larger one
head, thorax, abdomen (main body segmentation)
the main body segments of most animals, top, middle, end
cephalothorax
head and thorax fused into one segment, like spiders
tracheal tubes
branching network of hollow tubes that carry air throughout the body
spiracles
openings on the thorax and abdomen that connect to the tubes
ovipositor
a sharp digging structure on the tip of the abdomen used for depositing eggs into plant structures
metamorphosis
the transformation of a larva into an adult