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22 Cards in this Set
- Front
- Back
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Cnidaria |
Phylum including corals, sea anemones, and jellyfish |
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Ectoderm |
Outer layer (epidermis), has cells that aid in capturing food and cells that secrete mucus |
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Endoderm |
Inner layer, has cells that produce digestive enzymes and break food particles |
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Mesoglea |
The jelly like material between the two layers (ectoderm and endoderm) |
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Gastrovascular Cavity |
A central cavity that extends into the hollow tentacles |
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Polyp |
One of the main forms a Cnidarian takes during its life. A hollow cylinder like shape that opens and closes at the top |
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Medusa |
A main shape that a Cnidarian takes in its life. Form of an umbrella shape with mouth and tentacles hanging down |
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Radial Symmetry |
A type of symmetry where there is a circular shape that allows for multiple cross sections that all look alike |
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Cnidocytes |
Stinging cells |
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Nematocyst |
Long, coiled, tubular harpoonlike structure; injects venom into food/prey |
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Plankton |
Organisms that cannot swim against a current |
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Nerve Net |
A network made of long, thin fibers that respond to mechanical or chemical stimuli |
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Mechanoreception |
The ability to to respond to a stimulus of touch or pressure |
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Chemoreception |
The ability to respond to a chemical stimuli (sometimes taste and smell) |
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Photoreception |
The ability to respond to changes in light intensity |
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Sexual Reproduction |
Begins with production of cells called eggs and sperm |
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Fertilization |
The beginning of a new organism, occurs when egg and sperm unite |
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Larva |
The new organism created after fertilization |
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Cilia |
Small hairlike structures that move along by beating back and forth |
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Asexual Reproduction |
Reproduction without eggs and sperm. Also common among Cnidarians |
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Budding |
Cells on the side or base of the parent begin to bulge out and form a new organism |
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Regeneration |
When a small chunk of detached tissue may even regenerate/grow into an entire new organism. |
