Gymnosperm Reproduction

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Gymnosperm Reproduction
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Male and female cones in Pinus
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Pinus male cones
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Male cones with microsporangia
Microsporangium
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Pollen Development in Pinus
p.c.
a.c.
microspore
2 p.c.
2 p.c.
gen cell
tube cell
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Pine pollen
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1 and 2 year old female cones
2nd Year Cone
1st Year Cone
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Conifer cone is a compound cone
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Model of Megasporangiate Cone
ovule
ovuliferous scale
bract
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Ovuliferous scale
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Young female cone
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Ovule development
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Pinus ovule
Eggs
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Close up of egg in archegonium
Neck cells of archegonium
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Egg cell within archegonium
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Pollination occurs before female gametophyte
develops
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Growth of pollen tube
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Mature seeds
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Abies (fir) seed cones
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Picea (spruce) seed cones
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Juniperus (cedar) male cones, female cones, and
pollen
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Sequoiadendron giganteum seed cone
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Taxodium distichum (bald cypress) with seed cones
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Taxus (yew) seeds No female cones in the Taxaceae