Cnidarians - mpsaz.org

Cnidarians - mpsaz.org

Kingdom: Animalia Phylum: Cnidaria Cnidarians

Show examples Sea anemone, jellyfish (jellies), corals, hydra 10,000 marine species

Have specialized tissues can swim and catch prey Radial symmetry (sliced like a pizza) 2 stages in life

1) Polyp 2) Medusa Body plan - central mouth/anus surrounded by

tentacles Are carnivorous, digest food in gut Have nerve cells and nerve net - Primitive nervous

system (no brain) Having stinging nematocysts in cnidocytes Portuguese man-of-war

Diversity of Cnidarians - Medusozoa Coronatae

Stauromedusae Semaeostomeae

Cubomedusae Limnomedusae

Actinulida Rhizostomeae

Trachymedusae Narcomedusae Anthoathecata

Leptothecata Laingiomedusae

Siphonophora More Diversity of Cnidarians

Actiniaria Zoanthidea

Ceriantharia Corallimorpharia

Antipatharia Scleractinia

Even more Diversity of Cnidarians O. Alcyonacea O. Helioporacea

O. Pennatulacea Blue coral

2 families Sea pens Soft corals & sea fans

29 families 14 families

10,000 11,000 Species of Cnidarians Medusoz oa

Anthozoa Scyphoz Cuboz oa oa

Octocoralli Hexacorall Staurozo a ia a

Hydrozoa

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