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Transcript 
Jim Bidlack - BIO 1304
GENERAL BOTANY Lecture 22 - Life Cycle of Flowering Plants
I.
II.
Generalized life cycle
A.
Life cycle from before: cell division - growth - DNA duplication - prep. for division - division
B.
Sporic life cycle: alternation of generations - sporophyte (plant) & gametophyte (pollen tube
or embryo sac)
1.
Sporophyte (produces spores - pistil & stamen)
2.
Meiosis produces microspores & megaspores
3.
Some mitosis occurs - get lots of stuff including egg and sperm
4.
Pollination leads to pollen tube & embryo sac
5.
Double fertilization
a)
Egg and sperm - zygote
b)
Central cell and sperm - primary endosperm
6.
Seed - - - - - - eventually a plant and starts over again
Details of the sporic life cycle
A.
SEE FLOW DIAGRAM
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