The main body cavity of a sponge.
Cnidarians have this type of symmetry.
What is radial symmetry?
This type of coral is the ecosystem engineer of the coral reef ecosystem because they secrete calcium carbonate.
What is stony coral (Order Scleractinia)?
This class contains the deadliest cnidarians (can kill a human in 2-5 minutes).
What is Class Cubozoa?
The horseshoe-shaped structures on the aboral side of this organism.
What are gonads?
Cells in a sponge that are responsible for creating the water current and capture food.
What are choanocyte (collar) cells?
The stinging structures that are housed in cnidocytes in the tentacles of cnidarians.
What are nematocysts?
This photosynthetic organism has a mutualistic symbiotic relationship with coral by providing oxygen, sugars, and lipids to the coral.
What are zooxanthellae (dinoflagellates)?
Almost all of the species of this phylum are capable of bioluminescence.
What is Phylum Ctenophora?
The term that best describes a colonial organism with both medusa and polyp forms.
What is a siphonophore?
The body plan of this sponge
What is asconoid?
The body cavity in cnidarians that is where digestion occurs.
What is the gastrovascular cavity?
A major cause of death in corals that is caused by climate change-induced increases in ocean temperatures.
What is coral bleaching?
This taxonomic class of Porifera has examples of all three sponge body plans.
What is Class Calcarea?
This organism's method of movement.
What are cilia?
The support elements in a sponge that are used in species identification.
What are spicules?
The term for the new medusa that are produced through strobilation during the life cycle of scyphozoans.
What is ephyra?
This type of reef runs parallel to the shore with a wide and deep lagoon in between.
What is a barrier reef?
This order of cnidarians contains solitary polyp form organisms that attach to structures using a pedal disk.
What is Order Actiniaria?
The adhesive-producing structures in the tentacles of this organism.
What are colloblasts?
This species of sponge is often gifted as a symbol of eternal love in Japan.
What is Euplectella aspergillum (Venus' flower basket)?
Soft corals in Subclass Octocorallia communicate through these gastrodermal tubes.
What are solenia?
The term for organisms that sexually reproduce and have separate sexes.
What is dioecious?
This order of cnidarians contains colonial organisms composed of a primary polyp with no tentacles and secondary polyps branching off with specialized functions.
What is Order Pennatulacea?
The name of the structure that produces new medusa during strobilation.
What is a scyphistoma?