Are all Arthropods exoskeletal

Answer 1

Yes, having an exoskeleton is a defining characteristic of arthropods. Animals with internal skeletons belong to three other phyla, for example Chordata - the chordates, including mammals, reptiles, amphibians, etc.

Answer 2

No, by definition arthropods are exoskeletal, having their skeleton on the outside. An endoskeleton, or internal skeleton, is usually characteristic of chordates.

Answer 3

1. The exoskeletons of many land-dwelling species have a waxy covering.

2. Lobster exoskeletons cannot be crushed by hand.

3. An exoskeleton is an external covering.