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