Antheridium below and oogonium above of Chara

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Antheridium (below) and oogonium (above) of Chara
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Vertical axis of Chara with 2 nodes
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Coleochaete- a discoid charophyte
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Bryophytes mosses (left), liverworts
hornworts (right) (start Embryophytes)
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Moss leafy gametophytes (1n)
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Moss leafy gametophytes
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Moss leafy gametophytes
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Germinating moss spore to form gametophyte
protonema
Spore coat with sporopollenin
rhizoid
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Protonema (early stage of moss gametophyte)
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Moss gametophyte bud with rhizoids
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Moss leafy gametophytes
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Moss sporophytes (2n) developing out of
gametophytes (1n)
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Moss gametophyte leaf
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Moss gametophyte leaf
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Antheridia (male gametangia) on male gametophyte
of moss
hypophysis
antheridium
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Moss antheridia with sperm cells inside
sperm cells
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Moss archegonia (female gametangia) on female
gametophyte
archaegonium
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Moss archaegonium with egg
egg
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Moss sporophyte seta and capsule (foot buried in
archaegonium matritrophic)
capsule
seta
operculum
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Section through moss sporophyte seta
hydroids and leptoids
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Section through moss capsule (sporangium 2n)
showing spores (1n) produced by meiosis
operculum
peristome
spores
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Moss capsule with spores
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Ferns (right) and fern allies (start
Tracheophytes)
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Fern sporophytes with moss gametophytes
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Fern sporophyte
Leaf stalk
rhizome (horizontal stem)
roots
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Fern sporophyte rhizome section
xylem
phloem
vascular bundle
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Fern spores (1n) germinating
Spore coat with sporopollenin
fern gametophyte protonemata
rhizoids
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Fern gametophyte with antheridia
prothallus
rhizoids
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Fern gametophyte with archaegonia
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Fern archaegonia
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Fern sporophyte (2n) growing out of archaegonium
sporophyte
gametophyte
rhizoid
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Fern sporophyte growing out of gametophyte
sporophyte leaf
sporophyte leaf stalk
gametophyte
sporophyte root
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Fern sporophyte growing out of gametophyte (left)
and sori with sporangia (right) on back of fern
leaf
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Fern fiddleheads (leaves)
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Fern leaves (sporophyte)
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Fern leaves
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Sori on back of fern leaf
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Sori (with sporangia) on back of fern leaf
sorus
sporangium
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Isolated fern sporangium
Fern spores
stalk of sporangium
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Lycopodium
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Equisetum
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Gymnosperms Gingkophyta (start Spermatophytes)
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Ginkgo leaves
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Ginkgo tree
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Cycadophyta
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Cycad cone and plant form
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Cycad cones
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Gnetophyta
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Coniferophyta
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Pine trees
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Pine trees sporophytes
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Male (left) and female cones
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Microsporangeate (male) cones
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Microsporangium with microgametophytes (pollen
grains)
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Microsporangium with pollen grains on a
microsporophyll
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Winged microgametophytes (pollen grains)
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Germinating pollen grains
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Microsporogenesis and microgametogenesis
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Sperm cells in pollen tube of microgametophyte
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Megasporangiate (ovulate) cone
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Ovulate cones
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Ovuliferous scales
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Ovuliferous scales after seed release
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Ovuliferous scales with subtending naked seeds
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Ovuliferous scale with ovule containing
megasporangium
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Ovuliferous scale with ovule containing
megasporangium
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Pine ovule with egg cell (filling archegonium)
within megagametophyte
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Egg cells filling archegonium
megagametophyte
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Megasporogenesis and megagametogenesis
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Pine pollination
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Mature pine seed
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Pine seedling