GREATER DAYTON ROWING ASSOCIATION A GDRA Rowing Safety Presentation.
G rowing S eeds One of life’s little wonders…. Things to ponder… What are the 5 major plant...
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Transcript of G rowing S eeds One of life’s little wonders…. Things to ponder… What are the 5 major plant...
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Growing Seeds
One of life’s little wonders…
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Things to ponder…What are the 5 major plant growth requirements?
Nutrients
Light
Moisture
Carbon Dioxide
Temperature
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It’s just a seed right?DrySmallUglyWho cares?
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Or is it?All DifferentAliveLittle promises of growth!Hold PotentialImpressiveNeatly packaged
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What is a seed?A seed is a fertilized, ripened ovule of a seed-producing plant…
Containing a living plant embryo capable of germinating and producing a new plant!
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More simply…
A seed is a guarantee of another plant!
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How are seeds formed?
Flowers are pollinated and seeds form within the drying flower.
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What’s in a seed?A tiny living plant embryo suspended inside.
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What’s viability?This ability for the embryo to wait suspended is called “viability”
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Epicotyl: (in the embryo of a plant) the part of the stem above the cotyledons.
Hypocotyl: connects the cotyledons to the radicle.
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Radicle: The part of a plant embryo that develops into a root.
Cotyledon: the primary leaf of the embryo of seed plants. (Like the sepal of a bud… for protection.)
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What is the length of a
seed’s viability called?
“longevity”
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The 2 Seed Categories:
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One seed leafFlower parts are in 3’s or multiples of 3Leaves have parallel veinsVascular bundles are scattered in the stemTap Root System
Monocot
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Endosperm
Cotyledon
Embryo
Seed CoatMonocot
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Two seed leaves (cotyledons)Flower parts in four or five multiplesLeaves are net veinedVascular bundles in stems are arranged in a circleFibrous Roots
Dicot
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Endosperm
Cotyledons
Embryo
Seed CoatDicot
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Can you tell them apart?
AA BB
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Can you identify the parts?
#1
#2
#3
#4