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| Diffuse web of interconnected nerve cells. |
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| Gut with single mouth opening. |
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Two way digestion through mouth;
Food enters and exits through the mouth. |
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| Jelly material between the two cell layers (epidermis and gastrodermis). |
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| Specialized cells used for defense and capturing prey. |
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| Organelle in cnidocyte with long filament. |
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| What types of organisms belong to phylum Cnidaria? |
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- Hydra
- Jelly fish
- Anenome
- Coral
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| What type of nervous system does a cnidarian utilize? |
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| What are the three classes of cnidarians? |
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- Hydrozoa; Hydra, Portuguese man-of-war
- Major feature: Most basic
- Dominante body form: Polyp
- Scyphozoa; Jelly Fish
- Major feature: Medusas bud polyps, the polyps then grow stacks of medusas and release them into water
- Dominant body form: Medusa
- Anthozoa; Sea anemones, Coral
- Major feature: Sybiotic relationship with clownfish (anemone) and algea (coral).
- Dominant body form: Polyp
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| Describe the life cycle of a jelly fish. |
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| Medusas bud a polyp. The polyp sticks to the ground and grow stacks of medusas, which then get released into the water. |
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| What is the ecological importance of corals? |
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| They are the oceans rain forest. They are made up of thousands of organisms. They provide biodiversity. With CO2 (air) adding with H20 (water), that creates H2CO3 (acid), and acid eats the shells of coral, which kills the animal. |
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| Describe two symbiotic relationships with cnidarians. |
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Anenome has a symbiotic relationship with clownfish
Coral has a symbiotic relationship with algea . |
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| Marine animals, "comb jellies", that are bioluminescent, and have rows of cillia. |
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