+ Seed Plants Outnumber seedless plants 10 to 1 They are
foodrice, peas, squash They make materials like clothes, furniture
and oxygen.
Slide 2
+ Characteristics of Seed Plants Vascular tissuewith true
roots, stems and leaves Reproduce with pollen and seeds
Slide 3
+ Vascular Tissue-Why is it important?? Transports materials
throughout the plant and helps support the plant. 2 types: 1.
phloemtransports food(blue) 2. xylem- transports water and minerals
(pink) Water is transported up to the leaves Food is transported
down to the stems and roots
Slide 4
+ Pollen and seeds Seed plants produce pollen that contain
cells that will later become sperm cells. Once the sperm cells
fertilize the egg cells a seed develops.
Slide 5
+ Seeds have 3 main parts 1. Embryo-this is the young plant
that develops from the zygote (fertilized egg). 2. Cotyledonsseed
leaves that can store food. 3. Seed Coat-outer covering of the seed
which protects the embryo
Slide 6
+ Seed Dispersal Animals may eat the seed then release it
somewhere else. The seed itself may have a structure that aids in
dispersal such as barblike structures, velcro or even wings like a
maple tree seed or dandelion. Waterseed simply floats to another
area. Some plants have an ejection system like a touch me not
Slide 7
+
Slide 8
+ Now we know what a seed is and how it get to where its going
Now what happens???
Slide 9
+ GERMINATION!!! When a seed begins to grow is germination. The
seed must have water and use the stored food to begin to grow. When
you can see the first leaves of a plant you call it a seedling.
Seeds that are dispersed far away from the parent plant do better
because of lack of competition for sunlight, water and
minerals.
Slide 10
+ Order of Reproduction Pollination Fertilization
Germination
Slide 11
+ Roots Functions Anchors plant to ground Absorbs water and
minerals Sometimes stores food
Slide 12
+ Types of roots Fibrousa dense tangled mass of similarly sized
roots. Ex: grass or onions Taprootone long main root to which
smaller roots branch off of. Ex: carrots or dandelion
Slide 13
+ Structure of the root Root Capthe rounded tip of the root. It
protects the root from injury. Root hairstiny hairs that grow out
of the roots surface to go into smaller areas around the root to
absorb water. They can also help anchor the plant into the soil.
Vascular tissue, both xylem and phloem, are located inside the
root.
Slide 14
+ Function of Stems 1. Carries substances between the roots and
the leaves 2. Provides support 3. Holds up the leaves so they are
exposed to the sun.
Slide 15
+ Structure of the Stem 2 Types of Stems: Herbaceouscontain no
woodEX: daisy or pepper plant Woody-rigid and hard like woodEX:
rosebush and trees Both contain xylem and phloem. Woody also
contains bark as the outermost layer. It also contains a layer of
cells called cambium which divide to produce new phloem and
xylem.
Slide 16
+ Rings of Woody Stems Annual rings a pair of light and dark
rings on a tree stump. The wide light color are growth from spring
while the thin dark color is from summer. Xylem makes up the rings
1 year of growth is a pair of light and dark rings
Slide 17
+ Leaves Functioncapture the suns energy Place where
photosynthesis, cellular respiration and transpiration take place.
Structurexylem and phloem are located between the layers of cells.
The surface layers have small openings called stomata from which
CO2 enters and O2 and water vapor exit. Upper and Lower leaf
Cells
Slide 18
+
Slide 19
+ Lets Review Plants produce pollen that turns into SPERM The
sperm can fertilize the EGG, which is called a ZYGOTE. That zygote
will grow into a SEED. The seed will begin to grow or GERMINATE.
And grow roots, stems and leaves.
