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Archaeplastida

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Archaeplastida is defined by descent from the primary endosymbiotic event that produced chloroplasts; its members include red algae, green algae, and land plants.

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Red algae store carbohydrates in the cytoplasm and lack flagella; green algae store carbohydrates in the plastid, resembling land plants.

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Archaeplastida's defining trait is chloroplast ancestry, not one life cycle — members range from unicellular algae to giant seaweeds.