The transition from a megaspore-dispersing ancestor to a seed-bearing plant involved the reduction of the number of functional megaspores per megasporangium to:
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Correct answer: One
In seed plants, typically only one of the four megaspores produced via meiosis remains functional. This single megaspore receives all the available nutrients and space within the megasporangium to develop into the gametophyte.
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More Evolution of Seeds questions
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