I think I understand your question, but you question has so many errors in it that it doesn't really make sense.
Species is the most narrow category
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The characteristics that bryophytes share with algae are biflagellate motile gametes and the life cycle. The life cycle, of course, is the duration of the life of the object. Biflagellate motile gametes are made when two or more of the motile gametes fuse into a zygote.