science

animals with ___ do not have brains

• gills

• endoskeletons

• nerve cords

• nerve nets

a fluid filled internal cavity surrounded by muscle tissue

• hydrostatic skeleton

• exoskeleton

• endoskeleton

hard outer covering that provides support

• hydrostatic skeleton

• exoskeleton

• endoskeleton

organisms that have endoskeleton

• crabs and snails

• earthworms, jellyfish, sea anemones

• fish, birds, and mammals

organisms having a hydrostatic skeleton

• earthworm, jellyfish, sea anemones

• crabs and snails

• fish, birds, mammals

organisms with exoskeletons

• crabs and snails

• fish, birds, mammals

• earthworm, jellyfish, sea anemones

an animal with a backbone

• cartilage

• vertebrate

• invertebrate

support provided by hard internal structures, made of bone or cartilage

• hydrostatic skeleton

• exoskeleton

• endoskeleton

flexible tissue that is the skeleton in sharks

• cartilage

• vertebrate

• inveretebrate

an animal that does not have a backbone

• cartilage

• vertebrate

• invertebrate