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actionjackson3

cnidarians

cnidarianscharacteristics
cnidarians soft-bodied aminals with stinging tentacles arranged in circles around the mounth
polpy this is the sessile form
medusa this is the motile form
gastrovascular cavity where digestion occurs
nematocysts stinging structures on the tentacles
gastroderm innermost layer of tissue
epidermis outer most layer of tissue
mesoglea middle layer of cells
statocysts simple organs that are involved in balance of the medusae
Ocelli detect the presence of light
hydrozoa a cnidarian that spend most of its life in the sessile polyp form
freshwater hydrozoa do not have the medusa stage
hermaphrodite have both reproductive organs
Created by: cmjack01
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