Biology / Unit 9 Bio 1997 short lesson, about 20 seconds
Archaeplastida
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The idea
Archaeplastida is defined by descent from the primary endosymbiotic event that produced chloroplasts; its members include red algae, green algae, and land plants.
In practice
Red algae store carbohydrates in the cytoplasm and lack flagella; green algae store carbohydrates in the plastid, resembling land plants.
Where people slip
Archaeplastida's defining trait is chloroplast ancestry, not one life cycle — members range from unicellular algae to giant seaweeds.
Your place on the trail
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Builds on
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