The two-stage life cycle in plants evolved as an adaptation to life on land.

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The two-stage life cycle, also known as alternation of generations, allows for the plant to have a multicellular haploid stage (gametophyte) that can exist in terrestrial environments, and a diploid stage (sporophyte) that can produce spores that can survive in the air and soil. This adaptation is essential for plants to reproduce and survive on land.

The Two-Stage Life Cycle in Plants Evolved as an Adaptation