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Plants

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Cuttings Grafting & Budding A cut from a plant can grow roots when put in soil. Two plants are attached to form one plant. 38 Plants can respond to their ... – PowerPoint PPT presentation

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Title: Plants


1
Plants
Green The color of life.
1
2
What do plants need to survive?
Gas Exchange
2
3
The Development of Plants
Flowering plants
Cone-bearing plants
Ferns and their relatives
Flowers Seeds Enclosed in Fruit
Mosses and their relatives
Seeds
Over time, plants have gone from simple to
complex.
Water-Conducting Vascular Tissue
Blue green bacteria
3
4
Flowering Plants have
Corn Seed
Bean Seed
Seeds
4
5
Flowering Plants have
Dicot
Monocot
Parallel Veins
Branched Veins
Leaves
5
6
Flowering Plants have
Dicot
Monocot
3
3
4
2
5
4
2
1
5
6
1
8
6
7
Multiples of 3
Multiples of 4 or 5
Flowers
6
7
Flowering Plants have
Dicot
Monocot
Vascular Bundles Scattered
Vascular Bundles In a Ring
Stems
7
8
Flowering Plants have
Dicot
Monocot
Fibrous Root
Taproot
Roots
8
9
Why does a plant need roots?
To absorb water and nutrients from the soil like
a sponge and store them for later
To anchor a plant in the ground
9
10
A Root Has Layers
Vascular Cylinder
Cortex
Epidermis
10
11
The outside layer of a root Is called the
Epidermis.
The epidermis provides
11
12
The outside layer of a root Is called the
Epidermis.
Root Hairs add extra surface area.
The root cap pushes through the soil.
12
13
The middle layer of a root Is called the Cortex.
Cortex
13
14
The inside layer of a root Is called the
Vascular Cylinder.
Vascular Cylinder
The Vascular Cylinder begins the process
of moving food and water throughout the plant.
14
15
The Vascular Cylinder contains
Carries Water
W (water) X (xylem) are both at the end of the
alphabet.
(Pronounced Flow-em)
Carries Food
15
16
Why does a plant need a stem?
To produce
leaves,
branches and
flowers
To hold the leaves up to sunlight
To transport nutrients from roots to leaves
16
17
Why does a plant need leaves?
For Photosynthesis
For Transpiration
For Gas Exchange
To Make Food
To Move Water
To Breathe
17
18
Guard cells let water leave the plant.
Guard Cells
Stoma
18
19
Guard cells let water leave the plant.
19
20
Looking at a cross-section of a leaf, you can see
20
21
Looking at a cross-section of a leaf, you can see
Control the size of the stoma.
Guard Cells
21
22
Looking at a cross-section of a leaf, you can see
Allows gases to move in and out of the leaf.
Stoma
22
23
Looking at a cross-section of a leaf, you can see
Cuticle
Outer waxy layer that protects against water
loss.
23
24
Looking at a cross-section of a leaf, you can see
Xylem
Phloem
Move nutrients and water through the plant.
24
25
Photosynthesis


Green plants use the energy of
sunlight
to convert carbon dioxide
and water
into high-energy sugars
and oxygen.
25
26
Photosynthesis
The formula looks like this.
light
CO2
H2O
C6H12O6
O2
6
6
6


carbon dioxide
water
sugars
oxygen
The balanced equation looks like this.
Now there are equal numbers of each element on
both sides of the arrow.
26
27
Photosynthesis
6 Carbon
light
CO2
H2O
C6H12O6
O2
6
6
6


carbon dioxide
water
sugars
oxygen
The balanced equation looks like this.
Now there are equal numbers of each element on
both sides of the arrow.
27
28
Photosynthesis
18 Oxygen
light
CO2
H2O
C6H12O6
O2
6
6
6


carbon dioxide
water
sugars
oxygen
The balanced equation looks like this.
Now there are equal numbers of each element on
both sides of the arrow.
28
29
Photosynthesis
12 Hydrogen
light
CO2
H2O
C6H12O6
O2
6
6
6


carbon dioxide
water
sugars
oxygen
The balanced equation looks like this.
Now there are equal numbers of each element on
both sides of the arrow.
29
30
Plant Reproduction
Plants can reproduce sexually by
Seeds
Cones
30
31
Seed Dispersal
Seeds can be spread by
Animals
Wind
Water
31
32
Gymnosperms
reproduce using cones.
32
33
Angiosperms
reproduce using flowers.
33
34
How attractive!
Careful!
Petals
Attract Insects
Sepals
Protect the Developing flower
Parts of a Typical Flower
34
35
Stamen
Anther
Filament
Male part of flower
Parts of a Typical Flower
35
36
Stigma
Pistil
Style
Female part of flower (Sounds like Pigtail)
Ovary
Parts of a Typical Flower
36
37
Plant Reproduction
Plants can reproduce asexually by vegetative
propagation.
Stems
Roots
Plantlets
Stems, plantlets and roots can become a new
plant.
37
38
Plant Reproduction
Plants can reproduce asexually by plant
propagation.
Cuttings
Grafting Budding
A cut from a plant can grow roots when put in
soil.
Two plants are attached to form one plant.
38
39
Plants can respond to their environment.
Tropisms
Winter Dormancy
Plants can respond to stimuli such as gravity,
light, and touch.
A plants growth and activity can decrease or
stop for a period of time.
39
40
Plants can adapt to their environment.
Aquatic Plants
Desert Plants
Waterlilies have air-filled spaces to help
oxygen move.
Have extensive roots, reduced leaves and thick
stems to store water.
Coconut seeds float in water.
40
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