Squid Dissection Pre-Lab Questions 2025

Squids are examples of

• vertebrates (animals with a backbone).

• invertebrates (animals without a backbone).

Other organisms that are in the same Phylum Mollusca as squid are (choose all that apply)

• Roaches

• Clams

• Snails

• Oysters

Tags

NGSS.MS-LS4-2

Squid belong to the Class ________ along with the octopus and chambered nautilus.

• Cephalopoda

• Crustacea

• Insecta

• Vertebrata

Tags

NGSS.MS-LS4-2

Squids, and other cephalopods, evolved from ancient _______ ancestors that had umbrella shaped shells.

• octopus

• snail

• clam

• shark

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

The large majority of mollusks today are shaped like snails. But, the protective shells they evolved have come at a cost. Because of their weight, snails sacrificed ________ for safety.

• comfort

• speed

• protection

Tags

NGSS.MS-LS4-2

The transitional creature, ____________, displays intermediate traits that may show the pattern of evolution between the shelled ancestors of squid and modern day squid.

• oyster

• clams

• chambered nautilus

• octopus

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

What is the soft body that covers the body of a mollusk called?

• foot

• mantle

• siphon

• ink sac

How many arms and tentacles does the squid have?

• 8 arms, 2 tentacles

• 10 arms, 2 tentacles

• 2 arms, 8 tentacles

• 5 arms and 5 tentacles

True or False. Squids have very large eyes similar in structure to human eyes.

• True

• False

Tags

NGSS.MS-LS4-2

What do squids use to breathe?

• lungs

• gills

• air sacs

• three-chambered heart