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32 Cards in this Set
- Front
- Back
Sea anemones have this type of symmetry |
Radial |
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Outer cell layers of an adult cnidarian |
Epidermis |
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Cells within aid in movement, can contract, extend, bend, or pulse the body or tentacles of the organism |
Epitheliomuscular cells |
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Inner cell layer of an adult cnidarian; functions mainly in digestion |
Gastrodermis |
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The extra cellular matrix that acts like glue between the two body layers; jelly of a jellyfish |
Mesoglea |
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Name for the blind gut in which digestion occurs |
Gastrovascular cavity |
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Another name for the gastrovascular cavity |
Coelenteron |
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Type of cnidarian nervous system |
Nerve net |
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Vase-shaped hydroid form, which is adapted to a sedentary or sessile life |
Polyp |
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Umbrella or bell shaped jellyfish form, which is adapted for free-floating or weak swimming |
Medusa |
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Term referring to organisms with two different body forms |
Dimorphism |
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Sensory structures used for balance and orientation |
Stayocysts |
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Sensory structures used for light reception |
Ocelli |
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Motile larvae of a jellyfish |
Planula |
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Type of asexual reproduction in which knobs of the tissue form in the side of an existing polyp |
Budding |
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Type of asexual reproduction in which an individual divides in half as one side of the polyp plus away from the other side |
Fission |
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Process in which a polyp can produce many Medusae |
Strobilation |
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Immature, eight-armed, free-swimming medusae formed from strobilation |
Ephyrae |
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Adjective to describe animals that prefer open water |
Pelagic |
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Adjective to describe animals that prefer substrate (bottom) environments |
Benthic |
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Adjective to describe animals that prefer substrate (bottom) environments |
Benthic |
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Cnidarian stinging cells |
Cnidocytes |
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The most common type of cnidae |
Nematocysts |
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The nematocysts sensor which triggers the filament to pop out |
Cnidocil |
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Corals use these small organisms to supplement their nutrition |
Zooxanthellae |
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Class name describing cup animals that live mostly in the medusa stage |
Scyphozoa |
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The largest known species of jellyfish |
Lions mane |
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The four horse-shoe shaped structures of a moon jelly |
Gonads |
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The four horse-shoe shaped structures of a moon jelly |
Gonads |
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The most venomous animal on earth |
Box jelly |
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Nickname for chironex fleckeri |
Sea wasp |
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Term for animals that are not colonial but instead live as individual polyps |
Zooid |