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Do algae reproduce asexually or sexually

Do algae reproduce asexually or sexually?

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There are algae which reproduce sexually and there are algae which reproduce asexually. In unicellular algae reproduction is usually asexual by the binary division. In pluricellular algae asexual reproduction can take place by fragmentation or by sporulation. In sexual reproduction of algae, pluricellular or uni, there is fusion of gametes (or syngamy). There are algae in which all cells can become gametes and there are algae in which some cells can play that function. Some species might present alternation of generations, making gametophytes and sporophytes with distinct ploidies.

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