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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 |