Mollusks compose of the large phylum of invertebrate animals known as the Mollusca. Mollusks have a mantle, mollusks invertebrate. Arthropods have jointed appendages, arthropods have segmented bodies
antropods have exoskeletons
the endoskeleton
Arthropods have an exoskeleton. Mollusks don't.
a scorpion is a Arthropods
Vertebrates have spinal cords. Mollusks and arthropods do not.
because they have no skeleton.
Sponges, Cnidarians, Mollusks, and Echinoderms are not Arthropods.
A. Arthropods
Flatworms, Roundworms, Annelids, Mollusks, and Arthropods
sponges+mollusks+arthropods+worms+octopods+echinoderms
There are over 50,000 known species of Mollusks! That figure makes them second only to the Arthropods in invertebrate phylum size.
Lobsters are neither echinoderms nor mollusks like clams. They are also not arachnids. Instead, they are crustaceans, a subsection of arthropods.
Feathers!