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How do jelly fish breath/

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sally dinosaur

on 14 December 2013

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Transcript of How do jelly fish breath/

How do jellyfish breathe?
The Jellyfishes thin body enables cellular respiration to occur using diffusion.
Jellyfish have simple bodies.
Don’t have:
-eyes -ears -nose
- tongue -bones

They have tentacles hanging around their mouth (oral arms): scoops food into the jellyfish’s mouth that then goes into the animal’s stomach. They have small digestive system.
Around the ridges of its bell are sence cells.
-They sense light: helping it know if it is swimming upside down.
-They have a smell sense: sensing chemicals in water.
-Another sense: helps keep them balanced.
Having lacking organs or having a smaller substatution allows them to be light enough to float, swim, be buoyant and breathe.

Body walls: two layers of cells. The outer layer (epidermis): consist of a network of nerves. The inner layer (gastrodermis): lines the gut. The guts shape increases the surface area to volume ratio for the inner layer, more exposure (improving diffusion).The layers: sandwich the jelly substance giving animal shape. The jelly: made of non living material (salt, protein and water, 95 percent water), they don’t require oxygen. The jellyfishes thin structure allows cellular respiration to occur, the cells directly receive oxygen (H2
) through diffusion-passing of oxygen through the membrane from high to low concentration.


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