AP BIOLOGY

Detailed explanation-1: -Worms are members of several invertebrate phyla, including Platyhelminthes (flatworms), Annelida (segmented worms ), Nemertea (ribbon worms), Nematoda (roundworms, pinworms, etc.), Sipuncula (peanutworms), Echiura (spoonworms), Acanthocephala (spiny-headed worms), Pogonophora (beardworms), and Chaetognatha (arrowworms).

Detailed explanation-2: -Worms are invertebrate animals with bilateral symmetry.

Detailed explanation-3: -An invertebrate is a cold-blooded animal with no backbone. Invertebrates can live on land-like insects, spiders, and worms-or in water. Marine invertebrates include crustaceans (such as crabs and lobsters), mollusks (such as squids and clams), and coral.

Detailed explanation-4: -Worms and slugs are not insects. Insects have six legs, two antennae, and an exoskeleton. Worms and slugs have soft bodies, do not have arms or legs, and move by crawling.