thanks
2007-04-17 15:57:51 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
A sea anemone is in Phylum Cnidaria, and sea anemones do not have any circulatory system. They rely on diffusion to transport materials within their bodies.
The human circulatory system consists of the heart and all the blood vessels. We need a specialized system because we are too large and have too much tissue to transport materials by diffusion.
2007-04-17 16:36:17 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋
particular, yet frequently the side might have not have been given any effect. some years in the past, on holiday interior the Mediterranean, a chum poked a sea anemone along with his hands. The tentacles curled around his finger yet he felt no longer something. Then he rubbed his greater lip with that finger, and the stinging cells that have been on his finger penetrated into the lip. He had an extremely swollen lip for the subsequent couple of hours!
2016-12-26 12:27:07 · answer #2 · answered by Anonymous · 0⤊ 0⤋
humans is closed but the Cnidaria isn't open. It does not have one - it uses diffusion to get everything where it needs to be. They are fascinating and according to their genome they have more DNA in common with humans than some worms.
2007-04-17 16:39:23 · answer #3 · answered by faithlocket 3 · 0⤊ 0⤋
The human is closed and the anemone is open!
PS The below answers are correct, of course. Flippancy is not my strong suit!
2007-04-17 16:16:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋