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Flowers and Reproduction (The Plant Life Cycle (sporophyte phase…
Flowers and Reproduction
Reproduction
Asexual
fragmentation
a large spreading or vining plant grows meters long
Sexual
involves flowers
The Plant Life Cycle
gametes
sperms
males
microgametes
eggs
females
megagametes
haploid
zygote
fertilized egg
sporophyte phase
one phase of the life cycle
trees, shrubs, and herbs
sporophyte generation
sporophyte
diploid
syngamy
gametes fuse with other gametes
microgametophytes
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"male"
megagametophytes
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"females"
microspores
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megaspores
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alternation of generations
sporophyte and gametophyte
Flower Structures
pedicel
flower stalk
receptacle
end of axis of where flower parts attach
complete flowers
have all flower parts
incomplete flowers
lack 2 of the 4 basic floral appendages
sepals
lower and outermost of the floral appendages
calyx
all sepals together
petals
above the sepals
corolla
all petals together
perianth
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both sepals and petals
stamens
above the petals
androecium
all stamens
2 parts
filament
stalk
anther
pollen is produced
carpels
gynoecium
highest level on receptacle
3 parts
stigma
catches pollen grains
style
elevates the stigma
ovary
where megaspores are produced
placentae
region that bares ovules
ovules
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nucellus
mass of parenchyma