Science 7: Chapter 11: Lesson 2

Which animals have tentacles containing stinging cells called nematocysts?

• mollusks

• flatworms

• cnidarians

Which characteristic identifies invertebrates?

• They have no backbone

• They are large and move quickly

• They have internal structures for support

Which life-form is NOT an arthropod?

• mollusk

• arachnid

• crustacean

are the simplest of the invertebrates, with no organs or body symmetry

• arthropods

• echinoderms

• roundworms

• sponges

have soft bodies with bilateral symmetry, and include snails and clams

• arthropods

• echinoderms

• roundworms

• mollusks

Tags

NGSS.MS-LS4-2

have exoskeletons and several pairs of appendages

• arthropods

• echinoderms

• roundworms

• mollusks

Tags

NGSS.MS-LS4-2

have bilateral symmetry and a rounded, simple body covered with a cuticle

• arthropods

• echinoderms

• roundworms

• mollusks

Tags

NGSS.MS-LS4-2

have radial symmetry, move on tiny tube feet, and include sea stars

• arthropods

• echinoderms

• roundworms

• mollusks

Tags

NGSS.MS-LS4-2