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BIOL212
Majors animal: Anatomy of Obelia (matching)
| Structure | Function |
|---|---|
| Hydranch (feeding polyp) | Polyp specialized for food acquisition |
| Tentacles | Defense and prey capture |
| Hypostome | Elevated mound of tissue that expands or contracts to regulate size of mouth opening |
| Gonangium (reproductive polyp) | Polyp specialized for reproduction |
| Madusa buds | Product of asexual reproduction; medusae will be released from the gonangium when mature and will produce sperm or ova, which fuse with the respective gamete forming a zygote that will develop into a new polyp |
| Coenosarc | Common chamber within which extracellular digestion occurs; nutrients are distributed throughout organism |
| Perisarc | Translucent outer covering of organism; serves protective function |
| Manubrium | Stalk of fleshy tissue that supports mouth |
| Mouth | Ingestion of food and egestion of indigestible particles |
| Gonads | Organs for sexual reproduction; either testes or ovaries |