Phyla
What phylum includes sponges?
Porifera
Which external structure of a fish allows it to extract oxygen from water?
Gills
Sponges feed by filtering tiny particles from water. This type of feeding is called ____.
filter feeding
Crustaceans, like crabs and lobsters, use these to breathe underwater
gills
The study of marine organisms and ecosystems is called ____
marine biology
Which phylum include animals that have radial symmetry, tube feet and can regenerate lost limbs?
Echinoderms
What is the hard outer covering of a crab and lobster called?
Exoskeleton
Echinoderms have this type of unique vascular system that helps them move and feed.
water vascular system
This type of circulatory system, found in fish, pumps blood in a single loop
closed circulatory system
This term describes animals that cannot move freely and stay attached to surfaces, like sponges.
sessile
What phylum are crabs a part of?
Arthropods
How many shells does a bivalve have?
2
This adaptation allows some fish to maintain buoyancy in the water.
swim bladder
The muscular foot of a bivalve helps it do this action in sand.
burrow
This structure in fish helps them detect vibrations and movement in the water.
lateral line
What are molluscs?
This phylum includes animals with a soft body, some of which have shells, like snails and clams.
What is the muscular organ that allows snails to move across surfaces?
Foot
Snails and bivalves use this structure to scrape food or filter particles.
radula
Sea stars use these tiny structures for movement.
tube feet
Molluscs, like octopuses and squids, use this method to move quickly through the water.
jet propulsion
Which phylum are fish a part of?
Chordates
This feature of a lobster is used for defense and capturing prey.
Claws/ pincers
The ability of some marine animals, like sea stars, to regrow lost limbs is called this.
regeneration
Some marine animals, like whales, must surface to breathe because they have this adaptation.
lungs
The process by which some marine organisms, like corals, build calcium carbonate structures over time.
reef formation