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What are the two stages of plant life?

Updated: 4/28/2022
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10y ago

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Plants have what is called an alternation of generations in their life cycle. The two stages are called the sporophyte generation and the gametophyte generation.

The sporophyte generation is diploid (has pairs of chromosomes). It produces spores by meiosis (reduction division), so the spores are haploid (contain only one chromosome from each pair). The spores divide by mitosis to produce a multicellular, haploid gametophyte generation.

The gametophyte produces gametes (by mitosis) which fuse during fertilization to form a diploid zygote. This then develops into the sporophyte, completing the life cycle.

The plants which we call mosses and ferns are the gametophyte generations. However conifers and flowering plants are the sporophyte generation of their life cycle.

This is much easier to understand if you see a diagram.

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Q: What are the two stages of plant life?
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