No, a caterpillar is an Arthropod. There are over a million types of anthropoids on earth. Here are three things all arthropods have
1. Chitonous
2. Exoskeleton segmented body
3. Jointed appendages
Echinoderms are in the Animalia kingdom.
The scientific name for Echinoderms is Echinodermata.
Echinoderms belong to the phylum Echinodermata.
As of yet, there is no known species of parasitic echinoderms.
Yes Eventually echinoderms do live in water.
Echinodermates possess a water vascular system.
No not all Echinoderms have backbones like the starfish
Echinoderms are born as zooplankton. There is no parental care.
Echinoderms live only in the sea.
Easy black swallowtail caterpillars are smaller caterpillars. SwallowTail caterpillars are bigger than black swallow tail caterpillars
Echinoderms are marine animals, which means they reside in the ocean. Echinoderms are found from the intertidal zone to the abyssal zone.
I believe Echinoderms evolved first.