Sea stars are considered invertebrates. This means they lack what organ?
A backbone
How many ocean zones are there?
5
Starfish, Perch, and Squid
3
Squid and Octopus are both part of what group of animals?
Cephalopods
True
What ocean zone has the most plant life?
What do we call this dissection tool?

Probe
Sharks are considered what type of fish?
"Cephalopoda" means what in Greek?
Head-foot
What do we call the center of the starfish where we can find most of its organs?
Central Disk
The Hadal zone is named after which Greek god?
Hades
What do we call this dissection tool? 
Forceps
What are the three classes of fish?
Bony, Cartilaginous, and Jawless
What do we call the part of the octopus and squid where we can find all the organs?
The mantle
What do starfish have on the ends of their arms that allow them to detect food on the ocean floor?
Light-sensitive spots
What is the deepest known point in the ocean called?
Challenger Deep
What is the structure that you pulled out from a squid that allows them to crush shellfish?
The beak
Which type or types of fish have gills without a cover?
Cartilaginous and Jawless
What special feature do all octopus have that allow them to paralyze their prey?
Poison
What is the tube-like structure found at the center of the starfish that allows them to take in water?
Madreporite
Name the ocean zones in order from most shallow to the deepest.
Sunlight, Twilight, Midnight, Abyssal, and Hadal
Is this squid a male or female?

Female
What do we call the structure that covers the gills for bony fish?
Operculum
How many arms and tentacles do squid have, and how many arms does an octopus have?
Squid have eight arms and two tentacles, while an octopus has eight arms.