Mollusks
This part of the mollusk body is specialized for burrowing, feeding, and movement
What is the foot?
The hard outer covering of an arthropod
What is the exoskeleton?
Two shells held together by very tough muscles, filter feeders, and the ability to make pearls describes this class.
What is Class Bivalvia (bivalves)
Echinoderms are the only marine upper invertebrates to have this body structure
What is an endoskeleton?
The primary mechanism behind the water vascular system in the tube feet of sea stars
What is water pressure?
This is a tongue-like body part of many mollusks used for scraping/drilling food
What is the radula?
This is the primary reason why arthropods molt
What is to allow their bodies to grow larger?
A squid has this many tentacles
What is 2?
The process through which echinoderms replace a lost/broken ray
What is regeneration?
This the opening to the water vascular system
What is the madreporite?
The primary movement strategy of cephalopods
What is jet propulsion?
This is the only sessile crustacean
What is a barnacle?
These organisms often retain nematocysts undigested from their prey to use for their own defense.
What are nudibranchs?
This is the circulatory fluid inside echinoderms
What is water?
The mouth of a sea star is located here
These special cells allow octopuses to camouflage next to just about anything
What are chromatophores?
This substance comprises arthropod exoskeletons
What is chitin?
This cephalopod is the simplest, most primitive, and has the least developed eyes.
What is the nautilus?
Phylum "Echinodermata" translates to this
What is "spiny skin?"
These help keep debris off the surface of a sea star
What are pedicellariae?
This is the purpose of adductor muscles in bivalves
What is to open and close the valves?
The process by which arthropods purposely shed their limbs for defense then regenerate
What is autotomy?
This is the function of the mantle
What is it secretes the shell?
A sea star that resides on the ocean floor would be classified as this
What is bethos/benthic?
This structure regulates the water pressure in a sea star’s vascular system.
What are polian vesicles?