Transcript Growing Seeds - Etna FFA Agriculture

G S
rowing
eeds
One of life’s little wonders…
Things to ponder…
What are the 5 major plant growth
requirements?
 Nutrients
 Light
 Moisture
 Carbon Dioxide
 Temperature
It’s just a seed right?
Dry
Small
Ugly
Who cares?
Or is it?
All Different
Alive
Little promises of growth!
Hold Potential
Impressive
Neatly packaged
What is a seed?
A seed is a fertilized, ripened ovule of a seedproducing plant…
Containing a living plant embryo capable of
germinating and producing a new plant!
More simply…
A seed is a
guarantee of
another plant!
How are seeds formed?
Flowers are pollinated and seeds form within the
drying flower.
What’s in a seed?
A tiny living plant embryo suspended inside.
What’s viability?
This ability for the embryo to wait suspended is
called “viability”
Epicotyl: (in the embryo of a plant) the part of the stem
above the cotyledons.
Hypocotyl: connects the cotyledons to the radicle.
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.)
What is the length
of a seed’s viability
called?
“longevity”
The 2 Seed Categories:
Monocot
One seed leaf
Flower parts are in 3’s or
multiples of 3
Leaves have parallel
veins
Vascular bundles are
scattered in the stem
Tap Root System
Monocot
Seed Coat
Endosperm
Cotyledon
Embryo
Dicot
Two seed leaves
(cotyledons)
Flower parts in four or
five multiples
Leaves are net veined
Vascular bundles in
stems are arranged in a
circle
Fibrous Roots
Seed Coat
Endosperm
Cotyledons
Embryo
Dicot
Can you tell them apart?
A
B
Can you identify the parts?
#3
#1
#4
#2