You would expect an earthworm to have no exoskeleton because as you see it is very flexible and soft. Organisms with such have body parts that are divided and an earthworm do not have any visible parts on them also having an exoskeleton would not allow an organism to move like an earthworm does.
Answer:
filum terminale
The filum terminale is a thin strand of pia mater that helps anchor the conus medullaris to the coccyx
To maintain pressure within plant cells and keep structure while growth ensues. Good luck, milady. *Tips his fedora*
I believe they are carbohydrates
