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26-3

Vocab

TermDefinition
cnidocyte stinging cell of cnidarians; used for defense and to capture prey
nematocyst stinging structure within each cnidocyte of a cnidarian that is used to poison or kill prey
polyp usually sessile stage of the life cycle of a cnidarian that has a cylindrical body with armlike tentacles
medusa motile stage of the life cycle of a cnidarian that has a bell-shaped body
gastrovascular cavity digestive chamber with a single opening, in which cnidarians, flatworms, and echinoderms digest food
nerve net loosely organized network of nerve cells that together allow cnidarians to detect stimuli
hydrostatic skeleton layers of circular and longitudinal muscles, together with the water in the gastrovascular cavity, that enable movement
external fertilization process in which eggs are fertilized outside the female's body
Created by: 100critter