Flowering plants start Anthophyta

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Flowering plants (start Anthophyta)
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Flowers (monocot)
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Bee pollination of dicot flowers
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Butterfly/moth pollination
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Beetle pollination
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Mammal (bat) pollination
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Lily flower carpels (pistil), stamens, petals,
sepals
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Stamen (microsporophyll) with anther and filament
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Cross-section of anther with four microsporangia
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Microsporangium surrounded by tapetal cells
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Microspore mother cells undergoing prophase I of
meiosis
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After meiosis I (two cells)
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After meiosis II (tetrads of four microspores
(1n))
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Anther with four microsporangia
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Microsporangium with tetrads of microspores
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Pollen grains (microgametophytes) after mitosis
with sporopollenin coats
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Release of pollen grains (microgametophytes)
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Germinating pollen grain with pollen tube (3
cells total!)
tube nucleus
sperm cells with nuclei
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Pistil (fused carpels or megasporophylls) with
stigma, style, and ovulary (at base)
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Ovulary at base of pistil
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Megasporangium with megaspore mother cell
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Four megaspores (1n) after meiosis
integuments
nucellus
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Three megaspores disintegrate one remains
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First mitotic division to form megagametophyte
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Second mitotic division to form megagametophyte
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Third mitotic division produces seven-celled,
eight-nucleus megagametophyte
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After double fertilization, division of zygote to
form embryo (2n)
Endosperm (3n)
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Developing seed (mature ovule)
endosperm
seed coat
embryo
fruit wall
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Dicot seed with cotyledons, radicle, shoot axis,
endosperm, and seed coat
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Corn plants with tassels and ears
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Fruits (mature ovularies) wind dispersal
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Fruits squirrel dispersed
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Fruits water dispersed
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Fruits bird dispersed