Term
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Definition
| 8 ctenes (comb rows). Biradially symmetrical. Most have 2 tentacles, often retractable. Bioluminescent. |
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Term
Phylum Ctenophora.
Diploblastic Layer? |
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Definition
| Epidermis and gastrodermis. |
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Term
Phylum Ctenophora.
Lifestyle? |
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Definition
| Almost all are marine planktonic predators. |
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Term
Phylum Ctenophora.
Mesoglea Layer? |
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Definition
| Thick mesoglea. Gives shape and form. |
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Term
Phylum Ctenophora.
Sensory-perception and Response? |
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Definition
| Apical sense organ at aboral end. |
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Term
Phylum Ctenophora.
Feeding and Digestion? |
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Definition
| Colloblasts: in epidermis or body: Sticky, helps catch prey. |
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Term
Phylum Ctenophora.
Reproduction and Development? |
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Definition
| Hermaphroditic; mostly simultaneous. Gonads: gastrodermis. Gametes exit via mouth. External fertilization. Fertilized egg -> larva; cydippid. |
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