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15 Cards in this Set
- Front
- Back
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General characteristics of Cnidaria |
Mostly marine, radial or bilateral symmetry, diploblastic, gastrovascular cavity, nerve net |
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Dimorphic Body Plan |
Have two body forms, in Cnidarian a polyp stage is asexual and sessile, and medusa stage is sexual ( dioecious ) and mobile. |
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How do Cnidarians feed? |
Carnivorous, use tentacles and nematocysts/cnidocyte to capture prey. Gastrovascular cavity, initial extra cellular digestion, completed intracellulary |
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What is a nematocysts |
Stinging structure within each cnidocyte of a Cnidarian that is used to poison or kill prey |
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What is alternate generations |
One generation is a polyp and the next is a medusa |
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What is alternate generations |
One generation is a polyp and the next is a medusa |
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Cnidarians have a nerve net. What is this and why is it important? |
A net of nerves covering the body that respond to localize stimuli |
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What is alternate generations |
One generation is a polyp and the next is a medusa |
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Cnidarians have a nerve net. What is this and why is it important? |
A net of nerves covering the body that respond to localize stimuli |
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What are the general characteristics of the four classes of Cnidarians |
Hydrozoa: Hydra. Scyphozoa: Jellyfish Cubazoa: box jellyfish Anthezoa: sea anemones/corals |
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What is alternate generations |
One generation is a polyp and the next is a medusa |
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Cnidarians have a nerve net. What is this and why is it important? |
A net of nerves covering the body that respond to localize stimuli |
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What are the general characteristics of the four classes of Cnidarians |
Hydrozoa: Hydra. Scyphozoa: Jellyfish Cubazoa: box jellyfish Anthezoa: sea anemones/corals |
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What are some general characteristics of Ctenophora |
Biracial, diploblastic, gastrovascular cavity, nerve net |
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What are comb rows and colloblasts? |
Colloblasts are embedded tentacles that capture prey. Comb rows are flat organelles formed by fusion of cilia |
