echinoderms circulate oxygen using a unique system. Rather than having blood, they circulate water that they use for exchanging carbon dioxide for oxygen. It is comprised of a central ring in the main body, and then tubes that radiate out into the appendages. You can learn more about this system, called the ambulacral system, by going to the related link.
A starfish is an echinoderm.
No. A spider is an arachnid. A starfish is an example of an echinoderm.
Echinoderm is an invertebrate and therfore it has no backbone
Yes sand dollar is an echinoderm.
an echinoderm is an organism with no spine
A bird is NOT an echinoderm because they dont live in salt water
Because echinoderm means "spiny skin."
Yes , a starfish is an echinoderm . It belongs to class Asteroidea . It is marine .
Lungs.
Mars does have oxegyn actually, although it's really little because of the interaction between the CO2 in it's atmospere interacting with the sun. Btw people, please stop saying Mars has no oxegyn!
The nervous system of the echinoderm lacks a cat and a zebra leg, with the fur from a fish, the echinoderm (ee-chee-no-derm) transacts this with its ability to eat rocks, forming a poylp. This makes the echinoderm smart enough to live.
No