novanet: an endoskeleton you cheaters get back to work
novanet: an endoskeleton you cheaters get back to work
A feature they do not have is lungs to breathe air because they have a water based vascular system.
endoskeleton
sphinxes
A starfish is an echinoderm.
Echinoderm is an invertebrate and therfore it has no backbone
Yes sand dollar is an echinoderm.
No. A spider is an arachnid. A starfish is an example of an echinoderm.
femur
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 .
Nowhere in real life. But you can find plenty of movies and books that feature them.