Page 19 Study Guide Flashcards
They are without real tissues or organs and have a _______________ body plan
Asymmetrical
Jelly fish and hydras are
Cnidarians
They posses a mouth and muscle tissue and are _____________
Symmetrical
Radial
Worms that have flat bodies with one body opening and simple eyes are called
Flatworms
Worms that have simple digestive and nervous systems are called
Roundworms
Clams and squids are
Mollusks
They have ________ symmetry, a muscular foot, a mantle, and several specialized organs
Bilateral
Sea stars and sea cucumbers are
Echinoderms
They have _____ feet and a water pressure system that helps them feed, breathe, and move
Tubed
Crabs and insects belong to the largest animal group on earth, the
Artyropods
The simplest animals are
Sponges