Sponges
Sponges were among the earliest animals to evolve on Earth. True or False.
True.
Two main body forms of cnidarians.
What are polyp and medusa?
What is closed?
Snails and slugs are in this class.
What are gastropods (class gastropoda)?
Class Turbellaria, Class Trematoda, and Class Cestoda are all in this phylum.
What is phylum platyhelminthes (flatworms)?
Sponges obtain their food and nutrients this way.
What is filter feeding?
Cnidarians do not have these in their body like you and me.
What are organs?
The clitellum aids the earthworm is this type of body system.
What is reproduction?
This class of mollusks uses jet propulsion to move.
What are cephalopods?
Hookworms and pinworms are in this phylum.
What are roundworms (phylum nematoda)?
The primary body structure of a sponge.
What is a porous body?
This cnidarian is found in freshwater.
What is Hydra?
This structure allows earthworms to move through soil.
What are setae?
This structure helps many mollusks scrape food.
What is a radula?
This group of mollusks have a closed circulatory system.
What are cephalopods?
These are the small, needle-like structures that help to provide structural support.
What are spicules?
Algae has a symbiotic relationship with this cnidarian.
What is coral?
Tapeworms are parasitic, so they have these features.
What are hooks and suckers?
These are the ways cephalopods protect themselves. Name two ways.
What is swimming away, hiding, camouflaging, and shooting out ink?
95% of the world's sponges are this type; known for vibrant colors and complex shapes.
What are demosponges (demospongiae)?
This part of a sponge excretes waste and water.
What is the osculum?
Stinging cell organelles in cnidocytes.
What are nematocyts?
This phylum of worm that lacks a digestive system obtains its nutrients by diffusion.
What are (parasitic) flatworms?
A mollusk shell is primarily made up of this mineral.
What is calcium carbonate?
For mollusks, this is a mass of soft flesh that covers the soft body and encloses the internal organs.
What is the mantle?