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Marine Biome Animal Adaptations - Coggle Diagram
Marine Biome Animal Adaptations
cnidarians (jellies and sea anemones)
ectoderm
outermost tissue layer of animal embryos
endoderm
innermost tissue layer of animal embryos
mesoderm
middle tissue layer
radial symmetry
body repeated around a central axis
attach to an underwater surface or drift along, allowing food capture from any direction
two basic body plans:
medusa
dome-shaped with mouth on lower surface
polyp
upward-facing mouth atop a cylindrical body that's attached to a surface
other characteristics:
gastrovascular cavity
saclike region that function in digestion and gas exchange
nerve net
interconnecting nerve cells that extend through their tissues
hydrostatic skeleton
fluid-filled cavity that contractile cells act against
mollusks
bilateral symmetry
left and right halves of bodies are symmetric with distinctive head and nerve cell concentrations, typically moving headfirst through environments
mantle
skirt like extension of the body wall
anthropods
most marine ones are crustaceans
sponges
suspension feeder
filters food from the surrounding water
most sponges are hermaphrodites (makes eggs and sperm)
fertilized with producing a zygote that develops into a ciliated larva