No, worms do not have an endoskeleton and they don't have an exoskeleton, either.
Some phyla that contain organisms with endoskeletons include Echinodermata (sea stars, sea urchins), Chordata (vertebrates like humans, birds, fish), and Porifera (sponges). These endoskeletons provide support and protection for the organisms.
Yes, they have endoskeletons. Seahorses' skeleton are inside their bodies so they would have endoskeletons.
Lions have endoskeletons because they are mammals and we are mammals.
What materials make up the endoskeletons of most vertebrates
we need endoskeletons because they hold us up. if we had an exoskeleton we would be covered by a shell
yes
yes
Endoskeletons. Arthropods such as lobsters, insects, and shrimp have exoskeletons. Endoskeletons have a skeletal system inside thier bodies, while exoskeletons have hard outer shells.
yes; endoskeleton of vertebrates may be either bone or cartilage
Yes
An endoskeleton are inner skeletons that are composed of tissue that has become mineralized. Animals with endoskeletons are humans, monkeys, horses, birds, and fish.
In animals with endoskeletons, muscles surround the skeleton. In animals with exoskeletons,the skeleton surrounds the muscles.