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13 Cards in this Set

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  • Back
What are nematocysts?
Nematocysts are stinging cells
What is the function of stinging cells?
The function of stinging cells is to capture its prey and to inject venom.
Where are stinging cells located?
They are located on the tentacles of all cnidarians and are used to defend themselves.
Explain how a cnidarian captures, eats, and digests its prey?
It captures its prey by using its stinging cells to inject venom which paralyses it. Its tentacles pull the prey into its mouth.
In what major way are the cell layers of cnidarians different from the cell layers of sponges?
Cnidarian cells form specialized tissues whereas sponges cells are less organized.
Are sponges and cnidarians invertebrates?
Do sponges and cnidarians have specialized tissues?
Cnidarians do but sponges don't
Do sponges and cnidarians produce asexually?
yes, both do.
Do sponges and cnidarians produce sexually?
Do sponges and cnidarians have asymmetry formation?
no, nly sponges do
Do both sponges and cnidarians have radial symmetry?
Do sponges and cnidarians have a single opening to its central cavity?
No, only cnidarians have one opening.
Name and describe the two basic body forms of cnidarians.
Cnidarians can be polyps which have a cylindrical body with mouth and tentacles at the top. Medusa, such as jellyfish,are dome shaped with mouth and tentacles underneath.