A diagram used in cladistics to show relations among organisms. This diagram is NOT an evolutionary tree.
What is a cladogram?
100
How you pronounce the word
"Cnidarian"
What is with a silent "C"?
100
The phylum that contains "flat worms"
What is Platyhelminthes?
100
Found in some form or another in the phylum Mollusca, this structure allows for locomotion, anchoring, and grasping.
What is the muscular foot?
100
An group of arthropods that some people call worms, but are NOT. They have short antennae, two pairs of legs per body segment, doesn't bite, very slow walker, and is mostly a scavenger.
What is a millipede?
200
The term that refers to a cell or organism that has two sets of chromosomes.
What is diploid?
200
The stage in a Cnidarians life cycle that is adhered to the substrate.
What is the polyp stage?
200
The phylum that contains "Round Worms"
What is Nematoda?
200
They have and endoskeleton, water vascular system, and their name comes from the term "spiny skin".
What is the phylum Echinodermata?
200
the group of Arthropods that include Crabs, Lobsters, Crayfish, shrimp, and Krill.
What is a Crustacean?
300
The condition of having similar parts regularly arranged around a central axis.
What is radial symmetry?
300
The number of openings a Cnidarians digestive tract contains.
What is one opening?
300
The phylum that contains segmented worms.
What is Annelida
300
An anatomical structure used in mollusks for feeding (sometimes compared to a raspy tongue)
What is the radula?
300
The group of arthropods that have three body parts (head, thorax, abdomen), two antennae, six legs, and hatch from eggs.
What is an insect?
400
An organism in which, during blastulation, the first opening becomes the mouth.
What is a protostome?
400
The structural elements found in most sponges.
What are spicules?
400
They have a fluid filled body cavity, digestive tract with two openings, and a non living cuticle that protects them.
What are Nematodes?
400
A group of Mollusca that have two shells, and filter feed.
What are Bivalves?
400
It means "jointed foot".
What is does Arthropod mean?
500
One of the hallmarks of deuterstome development, this is a type of cleavage.
What is radial cleavage?
500
Also known as collar cells, they are found lining the interior of all types of sponges.
What is a choanocyte?
500
The are divided into three different groups: Tapeworms, Flukes, and Planarians.
What are Platyhelminthes?
500
A hydraulic system used by echinoderms for locomotion, food and waste transportation, and respiration.
What is water vascular system?
500
The group of arthropods that have two body segments, no antennae, modified chelicera into claws, and include animals such as horseshoe crabs, spiders, mites, ticks, and scorpions.