Term
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Definition
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Term
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Definition
| middle germ layer b/t ecto- and endo-derm |
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Term
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Definition
| innermost germ layer that lines the digestive tube |
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Term
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Definition
| developing digestive tract |
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Term
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Definition
| two germ layers only (cnidarians, i.e. jellies and corals + comb jellies) |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| secrete external skeleton; must molt to grow out of its exoskeleton (in process called ecdysis) (e.g. nematodes, arthropods) |
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Term
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Definition
| ciliated tentacles that fxn in feeding (e.g. some molluscs and annelids have trochophoric larva) |
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Term
| calcerea and silicea (examples?) |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| planaria, tapeworms, flukes |
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Term
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Definition
| snails, clams, octopuses, squids |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| insects, crustaceans, arachnids |
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Term
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Definition
| sand dollars, sea stars, sea urchins |
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Term
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Definition
| central cavity to which water flows through pores |
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Term
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Definition
| large opening through which water flows |
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Term
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Definition
| "collar cells"; have flagella that assist in capturing food. Phagocytose food particles and distribute to other cells through amoebacytes |
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Term
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Definition
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Term
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Definition
| pseudopodia; takeup food and water from chaonocytes and digest it and carry nutrients to other cells |
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Term
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Definition
| produce eggs and sperm for sexual reproduction |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| sea anemones, sea fans, some corals |
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Term
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Definition
| outer epidermal cells (porifera) |
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Term
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Definition
| line inner cavities; responsible for digestion, of food |
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Term
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Definition
| separates pinacocytes and chaonocytes; gelatinous layer |
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