Phylums
Phylum Porifera are the...
Sponges
Porifera means
Pore bearing
Adult cnidarians display _____________ symmetry.
Radial
Phylum Ctenophora are known as the ___________________. They are known for their 8 rows of ciliary combs.
Comb jellies
All worms that we have discussed are _____________________.
Bilateral
Phylum Cnidaria include the...
Jellyfish, sea anemone, and corals.
What two structures in a sponge's body help it ingest food?
Flagellum and collar cells.
A cnidarians centrally located mouth is surrounded by tentacles with unique stinging structures called ______________________.
Nematocysts
Comb jellies have ________ cells which burst open and release a sticky threads that latch onto the organism.
Lasso
A lophophore is a ____________________________ ___________________________________________
Crown of ciliated tentacles
Phylum Platyhelminthes include the...
Flatworms
How does a sponge expel water?
Through the osculum
True or False: Cnidarians have a complex waste removal system. Please explain how they remove wastes.
False. Waste products can be removed directly from their cells since their cell layers are so thin.
Coral reefs are made of calcium carbonate skeletons. The dead coral polyps are on the ______________ and the living coral polyps are on the _______________.
Defined head _____________
Defined rear _____________
Top or back of animal ______________
Bottom or belly of animal ____________
Anterior
Posterior
Dorsal
Ventral
Phylum Nemertea include the...
Ribbon worms
What are the two main materials that sponges are made of? What is their purpose?
Spicules and spongin. Spicules help sponges stay upright, and spongin provides support and flexibility.
True or False: Asexual reproduction is most common in Cnidarians. What is 1 example of asexual reproduction?
True; Budding
The gastrovascular cavities of Cnidarians have _____________ which increase the surface area and improve digestion.
Septae
Which two phylums of worms do not have circulatory systems?
Platyhelminthes and Nematoda
Phylum Nematoda include the...
Roundworms
A group of cells surrounded by a shell of spicules so the cells can withstand harsh conditions.
Gemmule
What are 2 things that the specialized nerve cells are used for in Cnidarians?
Identifying other species; coordinating the pulsing movements for orientation in the water.
Siphonophores are colonies of tiny single celled organisms called __________________.
Zooids
The 3 groups of Flatworms are the...
Turbellarians, Trematodes, Cestoda