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PLANTS AND PHOTOSYNTHESIS
• Photosynthesis: Plants create energy from sunlight.
• Light energy is turned into chemical energy (sugars are
carbon based).
Copyright © 2010 Ryan P. Murphy
• Photosynthesis: Plants create energy from sunlight.
• Light energy is turned into chemical energy (sugars
are carbon based).
Copyright © 2010 Ryan P. Murphy
VIDEO: PHOTOSYNTHESIS
MISCONCEPTION #1:
• What is sugar used for in a plant?
• Sugar is used for energy.
• Sugar is also converted to starch and cellulose.
• Cellulose is what makes up the structure of the plant
(branches, stems, etc.)
MISCONCEPTION #2
• Plants get their food from soil.
•
55% of the substance of a plant’s mass is carbon taken from
the atmosphere and converted into cellulose and starch through
photosynthesis.
• Commercial plant food contains phosphorus, nitrogen, and
potassium.
MISCONCEPTION #3
• Plants do not need oxygen; they only take in carbon dioxide and
breathe out oxygen.
• Photosynthesis is NOT a method of breathing. It’s a food-making
process.
• Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O2
• Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O2
6 Carbon Dioxide
•
Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O
6 Carbon Dioxide + 6Water
•
Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O2
6 Carbon Dioxide + 6Water +
•
Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O2
Sunlight
•
Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O2
•
Sunlight
(6 Glucose) + 6 Oxygen
•
Equation for Photosynthesis
•
6CO2 + 6H2O + Energy  C6H12O6 + 6O2
6 Carbon Dioxide + 6 Water+
Sunlight
6 Glucose + 6 Oxygen
• Photosynthesis is the process by which light energy is utilized to
convert carbon dioxide and water into food to be used by plants.
• Oxygen is released into the air during the process. (O 2)
• the green pigment in leaves.
• It is then converted into chemical energy which is stored as starch or sugar.
• These starches and sugars are stored in roots, stems and fruits. They are available to the plant
as food or fuel.
Copyright © 2010 Ryan P. Murphy
• Photosynthesis is the process by which light energy is
utilized to convert carbon dioxide and water into food to be
used by plants.
• Oxygen is released into the air during the process. (O 2)
• Light or solar energy is captured by chlorophyll (CHLOR-oh-phil),
the green pigment in leaves.
• It is then converted into chemical energy which is stored as starch or sugar.
• These starches and sugars are stored in roots, stems and fruits. They are available to the
plant as food or fuel.
Copyright © 2010 Ryan P. Murphy
• Photosynthesis is the process by which light energy is
utilized to convert carbon dioxide and water into food to be
used by plants.
• Oxygen is released into the air during the process. (O 2)
• Light or solar energy is captured by chlorophyll
(CHLOR-oh-phil), the green pigment in leaves.
• It is then converted into chemical energy which is stored
as starch or sugar.
• These starches and sugars are stored in roots, stems and fruits. They are available to the
plant as food or fuel.
Copyright © 2010 Ryan P. Murphy
• Photosynthesis is the process by which light energy is
utilized to convert carbon dioxide and water into food to be
used by plants.
• Oxygen is released into the air during the process. (O 2)
• Light or solar energy is captured by chlorophyll
(CHLOR-oh-phil), the green pigment in leaves.
• It is then converted into chemical energy which is stored
as starch or sugar.
• These starches and sugars are stored in roots, stems and
fruits. They are available to the plant as food or fuel.
Copyright © 2010 Ryan P. Murphy
• Photosynthesis is the process by which light energy is
utilized to convert carbon dioxide and water into food to be
used by plants.
• Oxygen is released into the air during the process. (O 2)
• Light or solar energy is captured by chlorophyll (CHLOR-oh-phil),
the green pigment in leaves.
• It is then converted into chemical energy which is stored as starch
or sugar.
• Chemical energy is stored in roots, stems and fruits as starches
and sugar. They are available to the plant as food or fuel.
Copyright © 2010 Ryan P. Murphy
Hoot! Hoot!
I feel right at home!
Hoot! Hoot!
I feel right at home!
•MATTER IS RECYCLED THROUGH THE
ECOSYSTEM.
• Which of the following statements is false of
photosynthesis?
A.) Photosynthesis requires sunlight, carbon dioxide, and water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the sun to create chemical energy in
the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of photosynthesis?
A.) Photosynthesis requires sunlight, carbon dioxide, and water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the sun to create chemical energy in
the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of photosynthesis?
A.) Photosynthesis requires sunlight, carbon dioxide, and water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the sun to create chemical energy in
the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of photosynthesis?
A.) Photosynthesis requires sunlight, carbon dioxide, and water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the sun to create chemical energy in
the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of
photosynthesis?
A.) Photosynthesis requires sunlight, carbon dioxide, and
water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the
sun to create chemical energy in the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of
photosynthesis?
A.) Photosynthesis requires sunlight, carbon dioxide, and
water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the
sun to create chemical energy in the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of photosynthesis? And
the answer is…
A.) Photosynthesis requires sunlight, carbon dioxide, and water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Carbon Dioxide and water are produced.
D.) In photosynthesis, plants use radiant energy from the sun to
create chemical energy in the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Which of the following statements is false of photosynthesis? And
the answer is…
A.) Photosynthesis requires sunlight, carbon dioxide, and water.
B.) Oxygen and glucose are produced in photosynthesis.
C.) Oxygen and glucose are produced.
D.) In photosynthesis, plants use radiant energy from the sun to
create chemical energy in the form of sugars.
E.) None of the above.
Copyright © 2010 Ryan P. Murphy
• Carbon dioxide is used.
Copyright © 2010 Ryan P. Murphy
• Water is used.
Copyright © 2010 Ryan P. Murphy
• Occurs in light
Copyright © 2010 Ryan P. Murphy
• Occurs only in cells with chloroplasts.
Copyright © 2010 Ryan P. Murphy
• Produces sugar from light which may then be stored or
transformed to starch or cellulose (plant material.)
Copyright © 2010 Ryan P. Murphy
• Oxygen is released as a waste product.
Copyright © 2010 Ryan P. Murphy
Photosynthesis Simulation
TRACING THE PATH OF WATER…..
…..through a plant
•
What do the tree branches have that the roots do not?
•
Can a plant get a drink of water like this?
Copyright © 2010 Ryan P. Murphy
•
Can a plant get its minerals like this?
Copyright © 2010 Ryan P. Murphy
•
Do plants have fat / large stomachs for storing food and energy?
Copyright © 2010 Ryan P. Murphy
•
How do plants anchor into the ground?
Copyright © 2010 Ryan P. Murphy

Roots
-
Copyright © 2010 Ryan P. Murphy

Usually the underground portion of a plant.
Copyright © 2010 Ryan P. Murphy

Lacks buds, leaves, or nodes.
Copyright © 2010 Ryan P. Murphy

Serves as support.
Copyright © 2010 Ryan P. Murphy

Draws minerals and water from the
surrounding soil.
Copyright © 2010 Ryan P. Murphy

Sometimes stores food.
Copyright © 2010 Ryan P. Murphy

There are two types main types of roots.
-
Copyright © 2010 Ryan P. Murphy

There are two types main types of roots.
-
Copyright © 2010 Ryan P. Murphy

There are two types main types of roots.
-
Copyright © 2010 Ryan P. Murphy

There are two types main types of roots.
-
Copyright © 2010 Ryan P. Murphy

There are two main types of roots.
-
Copyright © 2010 Ryan P. Murphy

Taproot: Main root with roots that branch
off.
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
•
Can you find the taproot in this picture?
Copyright © 2010 Ryan P. Murphy
•
Answer! A carrot is one big taproot?
Copyright © 2010 Ryan P. Murphy

Fibrous root: Many branches.
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
•
Which root is a taproot, and which is a fibrous root?
Copyright © 2010 Ryan P. Murphy
•
1) Taproot
2)
Copyright © 2010 Ryan P. Murphy
•
1) Taproot
2) Fibrous Root
Copyright © 2010 Ryan P. Murphy

Other roots can be tubercular. (Tubers)
Copyright © 2010 Ryan P. Murphy
•
Can you find the tuber in the picture below?
Copyright © 2010 Ryan P. Murphy
•
Answer! Potatoes are part of a tuberous root system.
“I didn’t know
that.”
Copyright © 2010 Ryan P. Murphy

Root Hairs: Hairlike extensions of root to
absorb water and nutrients.
 Very
delicate (damaged when transplanted).
Copyright © 2010 Ryan P. Murphy

Root Hairs: Hairlike extensions of root to
absorb water and nutrients.
 Very
delicate (damaged when transplanted).
Copyright © 2010 Ryan P. Murphy

Root Hairs: Hairlike extensions of root to
absorb water and nutrients.
 Very
delicate (damaged when transplanted).
Copyright © 2010 Ryan P. Murphy
•
Root Hairs: Hairlike extensions of root to absorb water and nutrients.
• Very delicate (damaged when transplanted).
Copyright © 2010 Ryan P. Murphy
Transpiration
• The process by which
water is drawn up
from the plants roots
to the leaves and is
lost by evaporation
through pores in the
plants’ leaves.
• Plants lose gallons of
water every day
through this process .
Transpiration
•
Up to 99% of the
water absorbed by
roots is lost via
transpiration through
plant leaves. This
water loss allows the
plant to access CO2
for photosynthesis
and to cool itself .

Water uptake is necessary for plants
because…
-
Copyright © 2010 Ryan P. Murphy

Keeps plants rigid and not wilted.
 Water
fills cells and creates turgor pressure.
Copyright © 2010 Ryan P. Murphy
I can’t even do
photosynthesis
anymore….Help!
Man, I
could sure
use a drink
here.
Someone
tell the
roots to get
some water
up here.
I can’t even do
photosynthesis
anymore….Help!
Man, I
could sure
use a drink
here.
Someone
tell the
roots to get
some water
up here.
I can’t even do
photosynthesis
anymore….Help!
Man, I
could sure
use a drink
here.
Someone
tell the
roots to get
some water
up here.
I can’t even do
photosynthesis
anymore….Help!
Man, I
could sure
use a drink
here.
Someone
tell the
roots to get
some water
up here.
•
Video of young plant and periodic watering.
•
http://www.youtube.com/watch?v=LICDb8nM5rs

Water cools the plant down during warm
weather.
Copyright © 2010 Ryan P. Murphy

Water carries dissolved nutrients and
minerals throughout plant.
Copyright © 2010 Ryan P. Murphy

Water is needed for photosynthesis.
Copyright © 2010 Ryan P. Murphy
FLOWER
• Flower: The reproductive organ of a plant that
makes the seed.
Copyright © 2010 Ryan P. Murphy
•
What is does the perfect flower look like?
Copyright © 2010 Ryan P. Murphy
• A Perfect Flower: A flower that has both the male
parts and female parts in the same flower.
Female
Male
Copyright © 2010 Ryan P. Murphy
•
Imperfect Flower: A flower that has either all male parts or all female parts, but not both in the
same flower.
Copyright © 2010 Ryan P. Murphy
VIDEO! PARTS OF A FLOWER
•
Stamen – Male part of flower.
• • -
•
Filament: Supports the anther.
•
Filament: Supports the anther.
•
Filament: Supports the anther.
•
Anther: Part of the stamen that holds the pollen.
•
Anther: Part of the stamen that holds the pollen.
•
Which is the filament, and which is the anther? Where is the pollen?
•
Which is the filament, and which is the anther? Where is the pollen?
•
Which is the filament, and which is the anther? Where is the pollen?
•
Which is the filament, and which is the anther? Where is the pollen?
•
Which is the filament, and which is the anther? Where is the pollen?
•
Which is the filament, and which is the anther? Where is the pollen?
•
Which is the filament, and which is the anther? Where is the pollen?
•
Pistil: Female part of flower (egg).
• • • -
• -
Copyright © 2010 Ryan P. Murphy
•
Stigma: Sticky bulb in the center of the flower. Receives the pollen grains.
Copyright © 2010 Ryan P. Murphy
•
Style: Long stalk that the stigma sits on top of.
Copyright © 2010 Ryan P. Murphy
•
Ovary: On bottom of the flower, has the seeds inside and turns into the fruit. Contains the
ovules.
Copyright © 2010 Ryan P. Murphy
•
Ovule: The part of the ovary that becomes the seeds.
Copyright © 2010 Ryan P. Murphy
•
Petal: The colorful, often bright part of the flower.
• They attract pollinators and are pretty .
Copyright © 2010 Ryan P. Murphy
•
Petal: The colorful, often bright part of the flower.
• They attract pollinators and are pretty .
Copyright © 2010 Ryan P. Murphy
•
Flowers attract pollinators through…
• Fragrance (smell)
• Nectar (food)
• Color (sight)
Copyright © 2010 Ryan P. Murphy
•
Flowers attract pollinators through…
• Fragrance (smell)
• Nectar (food)
• Color (sight)
Copyright © 2010 Ryan P. Murphy
•
Flowers attract pollinators through…
• Fragrance (smell)
• Nectar (food)
• Color (sight)
Copyright © 2010 Ryan P. Murphy
•
No fancy flower or nectar = Wind pollination
?????????
Copyright © 2010 Ryan P. Murphy
•
No fancy flower or nectar = Wind pollination
?????????
Copyright © 2010 Ryan P. Murphy
•
No fancy flower or nectar = Wind pollination
Copyright © 2010 Ryan P. Murphy
•
Sepal: Green leaves that cover the outside of a flower bud to protect the flower before it
opens.
Copyright © 2010 Ryan P. Murphy
•
Activity! Please label the letters below.
•
A-
•
B-
•
C-
•
D-
•
E-
Copyright © 2010 Ryan P. Murphy
•
Activity! Answers
•
A-Anther
•
B-
•
C-
•
D-
•
E-
Copyright © 2010 Ryan P. Murphy
•
Activity! Answers
•
A-Anther
•
B-Filament
•
C-
•
D-
•
E-
Copyright © 2010 Ryan P. Murphy
•
Activity! Answers
•
A-Anther
•
B-Filament
•
C-Stigma
•
D-
•
E-
Copyright © 2010 Ryan P. Murphy
•
Activity! Answers
•
A-Anther
•
B-Filament
•
C-Stigma
•
D-Style
•
E-
Copyright © 2010 Ryan P. Murphy
•
Activity! Answers
•
A-Anther
•
B-Filament
•
C-Stigma
•
D-Style
•
E-Ovary
Copyright © 2010 Ryan P. Murphy
2
3
4
5
6
7
8
9
10
Answers 1-10.
Name that flower part!
Same answer can be used
more than once.
1 Filament
2
2 Ovules
3
3 Petals
4
4 Stigma
5
5 Sepals
6
6 Anther
7
7 Ovary
8
8 Style
9
9 Anther
10
10 Sepals
VIDEO!
•
Activity! Flower Dissection.
Copyright © 2010 Ryan P. Murphy
•
Activity! Flower Dissection.
• When we remove a piece of the flower, line up the parts of the flower on the sticky side
of the clear tape provided.
Copyright © 2010 Ryan P. Murphy
•
Activity! Flower Dissection.
• When we remove a piece of the flower, line up the parts of the flower on the sticky side
of the clear tape provided.
• They will be taped into your journal.
Copyright © 2010 Ryan P. Murphy