Lesson 10 Cephalopods

I am not a cephalopod, gastropod, bivalve, or nudibranch, but I am in the phylum Mollusca with all of those animals. What am I?

• Nautilus

• Cuttlefish

• Chiton

• Squid

Cephalopods move through jet propulsion, which means they spin their tentacles very fast like propellers.

• True

• False

Cuttlefish have an internal shell called a cuttlebone

• True

• False

Very few people have ever seen or filmed a live giant squid because giant squids can only survive in the deepest, coldest waters of the ocean where few people can venture

• True

• False

Although most people say "octopuses" for the plural of "octopus" the correct word is actually "octopi"

• True

• False

Most squid only live one to two years, reproducing only once

• True

• False

Because of its huge brain and playful ways, scientists believe giant squid to be one of the most intelligent creatures in the ocean

• True

• False

Most chitons feed at night and hide under rock ledges during the day

• True

• False

An ____ has eight arms: _____ and ____ have ten arms. A ___ can have thirty-eight to ninety arms

• gastropods, crabs, squid, cuttlefish

• squid, nautilus, octopus,cutttlefish

• cuttlefish, squid , nautilus, octopus

• octopus, cuttlefish, squid, nautilus

Tags

NGSS.MS-LS4-2

Cephalopods use their excellent ____ to help them locate food and escape danger. They also make use of their ____ to hide themselves from predators long enough to make a quick escape.

• Chambers, ink

• shoals, eyesight

• eyesight, ink

• beaks, chambers