Echindermata solving lifes problems
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| How do echinoderms do gas exchange? | Skin gills , spines and dermal brachia. Respiratory tree has invagination of the body wall.
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| How do echinoderms feed? | Sea Biscuits and Sand Dollars are grazers- have 5 pieces that are brought together in the middle AKA Aristotle's Lantern
Sea Stars are scavengers that prey on bivalve mollusks.
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| Is the echinoderms digestive system complete or incomplete? | The echinoderms digestive system is complete.
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| What is the echinoderms digestive system composed of? | It has compartments and glands. It has extracellular digestion that dump enzymes on food then animal absorbs food.
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| What is special about the way concenreacyclodia digest things | Have digestive endosymbiots
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| How do echinoderms control osmoregulation and secretion? | Most are osmoconformers. Ammonia diffuses out via skin gills.
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| How do echinoderms transport nutrients and gasses? | Have closed circulatory system and hemal system
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| How do echinoderms regulate responsiveness to the environment? | Circumesophageal ring ganglion with radial nerves ocilli on arm tips and tube feet muscle receptors. And muscle fibers on tube feet or body wall
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| How do echinoderms reproduce? | Fragmentation and regeneration. Sexual with most and they are diecious with internal fertilization.
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