Ocean Midterm

What does the phylum name Echinodermata mean?

• Jointed legs

• Spiny skin

• Five-sided

• Starfish

What are characteristics of Echinodermata phylum?

• Water vascular system, five-sided, radial symmetry, spiny skin

• 10 legs, bilateral symmetry, tube feet

• 8 legs, crawl, claw-like pincers, hard exoskeleton

• Tentacles, central nervous system, no bones

Tags

NGSS.MS-LS4-2

Which of the following is an Echinodermata?

• Sea stars

• Octopus

• Hermit crab

• Barnacle

Which animals are part of Echinodermata?

• Crabs, krill, arthropods, barnacles, lobster

• Octopus, squid, coral, sea stars

• Brittle stars, sea urchins, sea cucumbers, sand dollars

• Plankton, seaweed, kelp, seagrass

What does the phylum name Mollusca mean?

• Spiny skin

• Jointed legs

• Soft body

• Hard body

Characteristics of Bivalvia class

• Clams, mussels, oysters, two shells connected by a flexible ligament

• Snails, slugs, single spirally coiled shell

• Most behaviorally complex, "Head foot", octopus, squid, cuttle fish, etc.

• Tentacles with stinging nematocytes, do not show bones and a central nervous system, rather have a nerve net

Gastropod class

• Clams, mussels, oysters, etc. Two shells connected by a flexible ligament.

• Snails, slugs, single spirally coiled shell, muscular foot, eyes, tentacles, radula

• Most complex brain of any invertebrate, "head foot", octopus, squid, cuttle fush, etc.

Cephalopoda class

• Snails, slugs, single spirally coiled shell, muscular foot, eyes, tentacles, radula

• Most complex brain of any invertebrate, "head foot", octopus, squid, cuttle fish, etc.

• Clams, mussles, oysters, scallops, two shells connected by a flexible ligament

Cnidarian phylum name meaning

• Soft body

• Spiny skin

• Stinging plant

• Head foot

Characteristic of Cnidarian phylum

• soft-bodied stinging animals such as corals, sea anemones, and jellyfish

• do not show bones and a central nervous system, rather have a nerve net

• symmetrical, have a mouth but no head or brain, lower ability of movement, so they need to wait for their food to come to them

• a water vascular system and five-sided radial symmetry, they have a star-like appearance and are spherical or elongated