Sponges
Cells that line the inner chamber of a sponge.
Collar cells
What are the two body shapes of cnidarians?
Medusa and polyp
Flatworms, Roundworms, and Segmented Worms
An organ the lines a mollusks inner shell
Mantle
Define Tube Feet
Bulblike suctions structures lining the arms of an echinoderm
Porifera
Define nematocyst.
special stinging cell of cnidarians
Why are worms important for the soil?
They add nutrients into the soil through their digestive system
Bivalve, Gastropod, and Cephalopods
Name 4 examples of an echinoderm.
Starfish, Brittle Stars, Sea Urchins, Sea Lilies, Feather Stars, Sea Cucumbers, Sand Dollars
How are sponges important to the reef ecosystem?
Filter particles out and are habitat for other animals
Name the four groups of cnidarians
Hydrozoans, jellyfish, sea anemones and coral, and jellyfish
What are the two most commonly known segmented worms?
Earthworms and Leeches
Octopuses, squids, and nautiluses are an example of which group of mollusks
Cephalopods; which are ocean mollusk that have a head, tentacles, and a beaklike jaws
Echinoderms are unique compared to other invertebrates because they have a _____________.
endoskeleton
Sponges use what process to eat?
Filter feeding
Cnidarians have what type of symmetry?
Radial symmetry
Leeches are a part of what worm group and what is a key feature they have?
Segmented worm; and they have suckers on each end of their body
Invertebrates have helped in the making of medicines due to their bodies containing _________________.
Chemicals
Most echinoderms have what type of symmetry?
Radial
Expect the sea Cucumber has both radial and bilateral symmetry
How are sponges different from most animals?
They don't react to touch, don't have mouths, intestines, major respiratory, circulatory, and digestive systems. They have regeneration properties.
Why must coral live in shallow, clear water?
The algae that lives inside and feed the coral need the sunlight for photosynthesis
Worms that look like spaghetti and have pointed ends, they are not segmented, and move around by flipping/ bending their bodies.
Roundworms
They have soft bodies, a mantle, and a radula.
The characteristics of a mollusk.
What are the common characteristics of a echinoderm?
Marine habitat, spiny skin, endoskeleton, radial symmetry, tube feet