Term
Order Hydroida.
Lifestyle? |
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Definition
| Mostly marine, some freshwater (hydra). Mostly colonial. Colonies are polymorphic; interconnected through gastrovascular cavity. |
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Term
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Definition
| Medusae form dominates in all but hydra and a few others. Medusae are gonochoristic (separate sexes). |
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Term
Order Hydroida.
Colonizing Modules: Gastrozooids? |
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Definition
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Term
Order Hydroida.
Colonizing Modules: Gonozooids? |
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Definition
| Reproduction; produce medusoids. |
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Term
Order Hydroida.
Colonizing Modules: Dactylozooids? |
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Definition
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Term
Order Hydroida.
Reproduction? |
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Definition
| Fertilized egg -> planula larva -settlement and metamorphasis> polyp stage (solitary or colonial) -> medusa stage (adult) -> gametes -> start over. |
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Term
Order Hydroida.
Exception: Hydra? |
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Definition
| No medusa. Polyps produce gametes. No planula larval stage. |
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