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You have described body plan of a medusa...... and a jellyfish is a good example of a medusa.
MEDUSA
Medusa
The two body forms in the phylum Cnidarian are the polyp and medusa. Polyps are usually stationary, with a cylindrical body and tentacles surrounding a central mouth. Medusas are free-swimming and have a bell-shaped body with tentacles hanging down.
a butterflies toung is as long as its body
There are two cnidarian body shapes, the bell-shaped Medusa, whose tentacles face downward and the vase-shaped polyp, whose tentacles face upward. Cnidarians have stinging cells in their tentacles known as cnidocytes. These cells include a trigger that releases a toxin-coated stinger that paralyzes any organism that has come into contact with is. Examples of a medusa include the common jellyfish, and examples of a polyp include corals and sea anemones.
No, polyps are the anchored versions, anemones and hydras and such. The umbrella is called a medusa, or jellyfish.
A medusa has a bowl shaped body with stinging cells on the tips of their tentacles. Their mouth is located on the bottom where their tentacles are, and their central cavity is in the middle of their body. A polyp's body is shaped like a vase with stinging cells at the end of their tentacles, and their central cavity in the middle of their body. Their mouth is on the top of their body with their tentacles.
They have a mouth/anus and that is it.
A hydra has two body shapes. The first one is known as polyp which has tentacles and the other body form is known as medusa.
yes, they have bilateral symmetry
like spokes on a wheel