2007-07-06 03:34:48 · 5 answers · asked by formystudies6 1 in Science & Mathematics ➔ Zoology
Jellyfish do have muscles (as do all members of the phylun Cnidaria). They have "bell muscles" which pull on water-filled compartments. This is called a hydrostatic skeleton. In any case, the muscles run around the circumference of the umbrella-shaped medusal form, and when contracted pull the edges of the umbrella together. This pushes water out, and acts as a form of propulsion.
2007-07-06 04:16:57 · answer #1 · answered by kt 7 · 1⤊ 0⤋
Physiology Jellyfish have no brain, blood, or heart, but they still manage to survive. Jellyfish have a bell-like body with tentacles flowing underneath. They may have one or more mouths in the center of their body, between the tentacles. Around the mouth(s) there are tiny, frilly arms. Jellyfish range in size from the thimble jellyfish, which are only a few centimeters, to the Lion's Mane jellyfish, who's tentacles can reach a length of over 100 feet. Most jellyfish are transparent and have a white to light blue tint to them. The jellyfish moves using a jet propulsion method. JELLYFISH HAVE SPECIAL MUSCLES on the underside of their body that contract and shoot out water, moving the jellyfish. Jellyfish also have special light sensory organs along the rim of the body. These organs can detect light and dark, but can't pinpoint exact objects. Dispite not having a brain, jellyfish can still taste and smell.
2016-05-19 22:00:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Yes, but their muscles are so undeveloped that they just go with the tide (worked well for them so far).
2007-07-06 03:45:11 · answer #3 · answered by sicarn 2 · 0⤊ 0⤋
No
2007-07-06 11:53:34 · answer #4 · answered by DRAGON 5 · 0⤊ 0⤋
no.... DUH!
2007-07-06 03:43:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋