| In both species there are several layers of cells with labyrinthine walls on both the sporophytic and gametophytic side of the placenta. |
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| In charophytes, the first cell division of the zygote is meiosis, and their plant body is gametophytic. |
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| In apomictic plants, embryos develop parthenogenetically from unreduced somatic or gametophytic cells. |
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| In both species the gametophytic cells of the placenta generally have less prominent wall labyrinths than sporophytic cells. |
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| Bryophytes are characterized by their dominant gametophytic plant body and their sporophytes epiphytic to gametophytes. |
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| The haploid tetraspores erminate and give rise to haploid gametophytic plants. |
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| Other notable cytological features are highly pleomorphic plastids and mitochondrial aggregates in the gametophytic placental cells. |
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| Following germination, sporophytic embryo tissue was separated from surrounding female gametophytic tissue. |
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| If sporophytic mycelium is present when an aecium starts, the sporophytic and gametophytic components are intimately mixed in the aecium from its very inception. |
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| The pollen grain is the male gametophytic phase of flowering plants. |
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| Seed development requires co-ordinated expression of embryo and endosperm and is controlled by sporophytic, male gametophytic, and female gametophytic genes. |
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| Self-incompatibility mechanisms have traditionally been found to operate in styles with either a sporophytic or gametophytic incompatibility system. |
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| Individual specimens were identified to the generic level from the morphology of the young sporophytes and the presence or absence of gametophytic trichomes. |
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| In all the Archegoniate fertilization and the first critical phases of embryogeny occur within the shelter provided by the archegonium and the adjacent gametophytic tissue. |
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| Like all land plants, they have a life cycle referred to as alternation of generations, characterized by alternating diploid sporophytic and haploid gametophytic phases. |
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| Gametophytic apomicts differ from sexually reproducing plants in that they produce unreduced embryo sacs. |
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| Gametophytic self-incompatibility is a widespread mechanism in flowering plants that prevents self-fertilization and promotes out-crossing. |
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