An animal without a backbone

This phylum has a medusa and polyp stage, stinging tentacles, and radial symmetry. What phyla is it?

Which phylum?

Animals with a hard, spiny, outer body covering, and radial symmetry, that live in marine environments are part of which phylum?

An animal with a backbone

What kind of skeleton does the following animals have?

Spider, cricket and scorpion.

Characteristics: Jointed limbs, Exoskeleton, well developed nervous system with a brain

Which phylum has the following classes: Insecta, Crustacea, Arachnida?

Animals that have no backbone, segmented bodies, and bilateral symmetry, that can live in either land or marine environments are part of which phylum?

Animals with soft bodies that are sometimes protected by a shell, but other times are not, and can live either on land or in water are part of which phylum?

Which animal phylum does this organism belong to?

This phylum is made of segmented worms

Animals that have a backbone belong in which phylum?

Which Phylum has animals with a spinal cord, backbone, skull, and a well developed brain?