they are all earth worms and can be disected without dying.
their weirdness
yes
blood vessels
This would include the ultrastructure of the cuticle. These creatures share this and many other features with the other annelids.
annelids
Are annelids vertebrate
Sea cucumbers are not Annelids because they belong to the phylum Echinodermata, while Annelids are part of the phylum Annelida. Echinoderms, like sea cucumbers, exhibit radial symmetry and have a water vascular system, which are key characteristics of their phylum. In contrast, Annelids are segmented worms that show bilateral symmetry and lack a water vascular system. Thus, their distinct anatomical and developmental features classify them into different phyla.
A Chimpanzee's structural features are quite similar to that of humans. They can walk bipedally, have opposable thumbs and have the same internal anatomy as humans do.
They are small and do nothing
Annelids have an anus
Annelids, or segmented worms, developed several complex body features, including a segmented body plan that allows for greater flexibility and movement. They possess a coelom, which serves as a hydrostatic skeleton, aiding in locomotion. Additionally, annelids have a closed circulatory system, enabling efficient transport of nutrients and oxygen. Their well-developed nervous system, including a ventral nerve cord and segmental ganglia, enhances their sensory and motor functions.
Yes, Annelids have bilateral symmetry.