The nematodes and the arthropods belong to a clade with a common ancestor, called Ecdysozoa. The name comes from the word ecdysis, which refers to the periodic shedding, or molting, of the exoskeleton.
What nematodes and arthropods have in common?
-Both nematodes and arthropods possess an external covering, or cuticle.
What do nematodes and arthropods both have?
Both nematodes and arthropods possess an external covering, or cuticle. Nematodes are acoelomate, whereas arthropods are coelomate. The cuticle in nematodes lengthens as the animal grows. Both nematodes and arthropods must molt in order to increase in size.
Are nematodes and arthropods closely related?
The presence of an exoskeleton suggests, surprisingly, that phylum Nematoda (the roundworms) is more closely related to the Phylum Arthropoda (the arthropods) than to the other worm phyla.
What are the common characteristics of arthropods?
All arthropods posses an exoskeleton, bi-lateral symmetry, jointed appendages, segmented bodies, and specialized appendages. The major arthropod classes can be separated by comparing their number of body regions, legs, and antennae.
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