"Seaweed Is a Plant"
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
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Calling seaweed a plant overstates a real relationship — most seaweed is multicellular algae related to land plants by shared ancestry but outside the land-plant group.
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Kelp, a brown alga, belongs to the stramenopile lineage outside Archaeplastida, sharing no ancestor exclusive to land plants.
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This entry states the popular overgeneralization — Bio 2169 gives the criterion separating algae from land plants.