Yes. Anything with an exoskeleton or a hard shell (except turtles) are arthropods.
Arthropods
Crabs,Spiders,and Insects
Arachnids (spiders, scorpions), crustaceans (crabs, lobsters), and myriapods (centipedes, millipedes).
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lobsters, crabs, spiders, and I don't know four, just three.
Yes, crabs and Spiders are both arthropods.
spiders crabs centipedesinsects
Arthropods include insects (such as ants, bees, and butterflies), arachnids (such as spiders and scorpions), crustaceans (such as crabs and shrimp), and myriapods (such as centipedes and millipedes). They are characterized by their jointed legs, segmented bodies, and hard exoskeleton.
Yes, lobsters are arthropods. They belong to the phylum Arthropoda, which includes insects, spiders, crabs, and shrimp. Lobsters have hard exoskeletons, jointed legs, and segmented bodies characteristic of arthropods.
I think you mean arthropods? An arthropod is an invertebrate that has an exoskeleton (a skeleton on the outside), joined appendages, and a segmented body. Many examples are horseshoe crabs (which aren't actually crabs at all - they are most related to spiders), lobsters, and crabs, spiders, and other insects.
Yes. All insects, Spiders, arachnids, etc. are arthropods.
Yes, entomologists study spiders as part of their research on insects and other arthropods.