• Describe the basic body plan of a cnidarian.
• Summarize how cnidarians feed.
• Describe the nervous system of cnidarians.
• Identify and give examples of the four classes of cnidarians.
• Describe the common characteristics of ctenophores.
vocabulary medusa polyp epidermis gastrodermis mesoglea gastrovascular cavity tentacle cnidocyte nematocyst nerve net planula coral reef colloblast apical organ bioluminescence figure 33-3
The contrasting forms of medusae and polyps result from different arrangements of the same body parts. Medusa forms are free-floating and jellylike. Jellyfish are medusae. Polyp forms, such as hydras and sea anemones, are usually attached to a rock or some other object.
Was this article helpful?
Discover How To Sleep In Peace And Harmony In A World Full Of Uncertainty And Dramatically Improve Your Quality Of Life Today! Finally You Can Fully Equip Yourself With These “Must Have” Tools For Achieving Peace And Calmness And Live A Life Of Comfort That You Deserve!