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From Seed to SeedPlant
Life Cycles |
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When we talk about the life cycle of flowering plants, we are
talking about the span of time between the germination of a seed and that plants
subsequent production of seed. Lets use the familiar green bean plant as an example.
If you plant a bean seed and water it, the seed will probably germinate and within a week
youll see a sprout. The seedling grows, and, after about six weeks, the plant enters
its reproductive phase and begins to flower. These flowers, if fertilized, begin to wither
and drop their petals, and soon the ovaries within the flowers begin to develop into tiny
bean pods. If, instead of harvesting the beans at the "green bean" stage, you
let them ripen to full size, in several weeks youll have bulging pods filled with
large, succulent seeds. Allow these pods to fully mature and dry on the vine, and
eventually the pods will split, revealing voila! the bean seeds within.
Theres one life cycle completed, from seed to seed.Now lets compare the life cycles of different types of
plants.
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