Photosynthesis for plant and carbon cycle

Process of photosynthesis and carbon cycle

1. Science
Year 9
Unit 1: Photosynthesis and
the carbon cycle
1.1 Photosynthesis

2. LO:To Understand what is
photosynthesis
1.1 photosynthesis

3. Starter: Think about if there were no trees or plants in the world.
1.Write what you think might happen
2.How would it make you feel
EXT: What happens to a plant if it doesn’t get any sun?
PhotosynthesisPhotosynthesis
Keywords: Producer, consumer, chlorophyll, glucose, carbon
dioxide, water
*

4. ReviewReview
Not only do plants and tree help make places look more beautiful
they help keep us alive

5. Plants that get no sun light turn pale and are not as
healthy.
Plants that get no sun light turn pale and are not as
healthy.

6. Did you know: The oldest tree in the
world is thought to be this found
in the ‘White mountains’ in
California. It is about 5,062 years old.
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
LearningOutcomes:
⮚State the difference between
consumer and producer
⮚Describe the process of
photosynthesis stating the word
equation for photosynthesis
⮚Explain how to investigate the
rate of photosynthesis
LOb: Understand the process of photosynthesis.LOb: Understand the process of photosynthesis.

7. Plants are clever because they make their own food. The
food they make is called ‘glucose.’
Organisms that make their own food are called…

8. Anything that eats a producer is called a consumer!

9. Algae are like plants because they are producers but
they are different.
TASK: Look at the pictures and
write three ways algae are
different to plants…
Algae live in waterAlgae are unicellular
Have no leaves, roots
Flowers, or stems

10. Plants and ______ are called _______ because…
Activity: Complete this paragraph filling in the missing
words from the word bank below.
They use energy from the ____ to make ______ which
is a type of sugar.
Anything that eats plants are called _______.
Extension
Algae are not like plants because they live …
Consumers
Sun
Glucose
AlgaeProducers Food

11. Plants and ______ are called _______ because…
They make their own food.
Review
They use energy from the ____ to make ______ which
Is a type of sugar
Anything that eats plants are called _______.
Extension
Algae are not like plants because they live in water, are
unicellular and don’t have organ structures.
Consumers
Sun Glucose
Algae Producers
Food

12. Did you know: The oldest tree in the
world is thought to be this found
in the ‘White mountains’ in
California. It is about 5,062 years old
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
LearningOutcomes:
✔State the difference between
consumer and producer
⮚Describe the process of
photosynthesis stating the word
equation for photosynthesis
⮚Explain how to investigate the
rate of photosynthesis
LOb: Understand the process of photosynthesis.LOb: Understand the process of photosynthesis.

13. light energy
The word photosynthesis comes from the Greek language:
Photosynthesis is a chemical reaction that uses light energy.
●‘photo’ means ‘light’
●‘synthesis’ means ‘putting together’.
What is Photosynthesis?What is Photosynthesis?
Photosynthesis is an ENDOTHERMIC reaction
‘Endo’ means in: light is taken into the leaf

14. Photosynthesis
The process plants use to make
their own food glucose. Carbon
dioxide and water react to make
oxygen and glucose.

15. A plant making food by photosynthesis is a bit like cooking.
They take some things mix them together and make
something else!
CHLOROPHYLL

16. Plants need photosynthesis so that they can make
food to perform everything they need to do?
Plants need photosynthesis so that they can make
food to perform everything they need to do?
Glucose is used to help
plants grow.
Glucose is used to absorb
nutrientsfrom the soil.

18. Structure of a leaf
How are leaves designed to maximize photosynthesis?
Leaves are wide and flat
to create a large surface
area and to absorb
as much light as possible.
Leaves are thinso gases
can reach cells easily.
Leaves have holes, called
stomata, on their underside
through which gases move in
and out.
Leaves have lots of veinsto
carry water to the cells and
carry glucose away.

19. ADAPTATIONS OF THE LEAVES
•The leaves are wide to increase surface area for light
absorption.
•Most of the chloroplasts are found in the palisade layer the
top of the leaf for more light absorption.
•Upper epidermis is transparent to allow light to pass through
to the palisade layer.
•Leaves have veins to transport substances to and from the
leaves.
•Waxy cuticle helps to reduce water loss by evaporation
•Leaves have many stomata and air spaces for efficient gas
exchange.
•Leaves are thin to reduce diffusion distance for gases.

20. Travels up from
the roots
1. WATER
2. CARBON DIOXIDE
Enters the leaf through
small holes on the underneath
3. SUNLIGHT
Gives the plant energy
4. CHLOROPHYLL
A green
pigment found
in chloroplasts
where the
chemical
reactions for
photosynthesis
happens
Photosynthesis happens in the palisade cells of a leaf.Photosynthesis happens in the palisade cells of a leaf.

21. Leave Inner Structure

23. PhotosynthesisPhotosynthesis
Photosynthesis
Explain what
the animation
just showed.
Keywords:
Root
Water
Leaf
Carbon dioxide
Photosynthesis
Chloroplast
Glucose
Input: Watch the video and be ready to explain what
you saw
https://www.youtube.com/watch?v=Z8dYTO
bArOA

24. > CO
2enters leaf
> Water travels up from roots through the stem
to leaves
> CO
2and water react in presence of sunlight and
chlorophyll to give glucose and oxygen
> CO
2enters leaf cells
1. Water enters plant through roots
> CO
2and water enter chloroplasts within leaves
EXT: Draw diagram to visually explain these steps
Activity: Put the steps below for how photosynthesis
happens into the correct order. The first one is given for
you.

25. 1)Water enters plant through roots
2)Water travels up from roots through xylem to
leaves
3)CO
2enters leaf through stomata
4)CO
2enters palisade cells
5)CO
2and water enter chloroplasts within leaves
6)CO
2and water react in presence of sunlight and
chlorophyll to give glucose and oxygen
Peer Assessment

26. H
20 C
6H
12O
6 O
2 CO
2
TASK: Use the pictures to write out the equation for photosynthesis
onto your sheet
TASK: Use the pictures to write out the equation for photosynthesis
onto your sheet
EXT: Can you match the symbol to the substances of
photosynthesis?
EXT: Can you match the symbol to the substances of
photosynthesis?

27. light energy
chlorophyll
carbon
dioxide+water oxygen+glucose
C
6H
12O
6
+
+
Reactants Products
66 6
We can balance the equation by putting in numbers before the symbols
Remember this equation
ReviewReview

28. Did you know: The oldest tree in the
world is thought to be this found
in the ‘White mountains’ in
California. It is about 5,062 years old
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
LearningOutcomes:
✔State the difference between
consumer and producer
✔Describe the process of
photosynthesis stating the word
equation for photosynthesis
⮚Describe how plant get the
resources they need for
photosynthesis
LOb: Understand the process of photosynthesis.LOb: Understand the process of photosynthesis.

29. Where do plants get the resources they need?Where do plants get the resources they need?
Where do plants get there water
from?

30. Starts in the soil Goes into root hair
cellby osmosis
Water is now in the
roots

31. Water travels up the stem through the xylem

32. Water gets to the leafand evaporatesout of the leaf
through holes called stomata.
This journey is called the transpiration
stream.

33. Aquaticplants (plants that live in water) don’t have roots why?

35. Where do plants get the resources they need?Where do plants get the resources they need?
Where do plants get there
carbon dioxide?

36. Plants get their carbon dioxide from the surrounding
atmosphere diffusing into their leaves
Plants get their carbon dioxide from the surrounding
atmosphere diffusing into their leaves

37. What we need to
perform
photosynthesis
Where are they
found
Products (what
we end up with)
Activity: Using your knowledge of photosynthesis add in the
correct details into the table below
Activity: Using your knowledge of photosynthesis add in the
correct details into the table below
EXT: Answer the extension questionsEXT: Answer the extension questions

38. Raw materials
(what we start
with)
Where are they found…Products
(what we
end with)
Carbon dioxide
(CO
2)
CO
2is found in the
surrounding atmosphere
Glucose
(C
6H
12O
6)
Water (H
2O) H
2O is found in the soil and
absorbed into the roots. In
aquatic plants from their
surroundings
Oxygen
(O
2)
Light Comes from the sun
Chlorophyll Found in the chloroplast of
palisade leaf cells

39. Did you know: The oldest tree in the
world is thought to be this found
in the ‘White mountains’ in
California. It is about 5,062 years old
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
Keywords: Producer,
consumer, chlorophyll, glucose,
carbon dioxide, water
LearningOutcomes:
✔State the difference between
consumer and producer
✔Describe the process of
photosynthesis stating the word
equation for photosynthesis
✔Describe how plant get the
resources they need for
photosynthesis
LOb: Understand the process of photosynthesis.LOb: Understand the process of photosynthesis.

40. Photosynthesisis an endothermicreaction.
Photosynthesis transfers energyfrom the sun light
into chemicalenergy in the substance glucose.
water + carbon dioxide ??????glucose +
oxygen
6H
2O 6CO
2 C
6H
12O
66O
2
Leaves and stems are green because they have organelles
called chloroplastswhich contain the pigment chlorophyll.

41. Plenary: Complete the plenary section of sheet

42. What minerals do plants need?
Plants need mineralelementsfor healthy growth.
Some of the most important minerals needed by plants
are:
The mineral elements are found in saltsdissolved in
water.
Plants obtain minerals when they absorb water from the
soil.
How do plants obtain these minerals?
nitrogen
potassium ions
phosphorus
potassium
magnesium magnesium ions
phosphates
nitrates
What type of saltare each of these elements found in?

43. What are minerals needed for?
How do plants use these mineral elements?
Mineral
element
How mineral is used in
plants
nitrogen (N)
phosphorus (P)
potassium (K)
magnesium
(Mg)
making leaves
making roots
making flowers and fruit
making chlorophyll

44. Not enough minerals!
What happens if plants do not get enough minerals?
Plants do not grow properly if they are deprived of
minerals and begin to look unhealthy.
If a plant does not get enough of a mineral it is said
to have amineral deficiency.

45. Mineral deficiency –no nitrogen!
Nitrogen is used for making leavesand is
probably the most important mineral for plant
growth.
What is the effectofnitrogen deficiency?
lower leaves
yellow and dead
weak stem
upper leaves
pale green

46. Mineral deficiency –no magnesium!
Magnesium is used for making chlorophyll and
so is vital for the process of photosynthesis.
What is the effectof magnesium deficiency?
upper leaves normal
(leaves turn yellow from
bottom upwards)
lower leaves pale green or
yellow

47. T
F
F
T
F
T
F
T
F
T
T
T
F
T
ReviewReview

48. Plenary: Chose a number to reveal a question
related to what we have learnt.
Plenary: Chose a number to reveal a question
related to what we have learnt.
What is
photo-
synthesis?
How is
algae
different to
plants?
What food
to plants
make?
Products of
photo-
synthesis?
Where does
photosynthesis
happen?
Equation
for photo-
synthesis?

49. Carbon
-An element
-Basis of life on earth
-Found in ocean, rocks, atmosphere
Cycle
-Continuous movement or transfer of
something.

57. -Each year 5.5 billion ton of carbon is
released by burning fossil fuels.

60. HOW ARE CLIMATE AND
WEATHER DIFFERENT?
Climate is the average temperature
and sustained cycles of weather over
a prolonged period e.g. decades.
Weather can change from day to day
e.g. you may have a sunny, rainy
and snowy day all in one week. You
need to monitor years of data to
make a comment on climate.

61. Describe the historical and predicted future
impacts of climate change, including sea level
change, flooding, drought and extreme weather
events.
Learning Objective

62. Climate change is when the Earth's usual
climate (the weather patterns over a long time)
starts to change. It's like the Earth is getting a
little warmer. It happens because of something
called the "greenhouse effect."
What is Climate Change?

63. Picture a greenhouse where plants grow. Sunlight
comes in through the glass, but some of it gets
trapped inside, making it warmer. The Earth has a
natural "blanket" of gases like carbon dioxide and
methane. But when we use a lot of cars and
factories, we add more of these gases, making
the Earth warmer, like a greenhouse.
The Greenhouse Effect

64. What Happens When
it Gets Warmer?

65. Think about what happens when it's too hot
outside. Ice cream melts, right? Well,
something similar happens to ice at the
North and South Poles. It melts and makes
the sea level rise. This can be a problem for
animals and people who live near the water.
Melting Ice

66. The Earth might have more storms, floods,
or droughts. This can make it harder for
plants, animals, and people to live in some
places.
Crazy Weather

67. Some animals and plants might not like the
warmer weather, so they have to find new
homes. It's like if you had to move because
your house became too hot.
Migrating Animals

68. What Can We Do to
Make it Better?

69. When we use less electricity and water, it's
like giving the Earth a break. Turn off lights,
unplug electronics, and don't waste water.
Use Less Stuff

70. Trees are like superheroes. They help clean
the air by taking in the extra gases. Planting
more trees is like inviting more superheroes
to the Earth team.
Plant Trees

71. When we recycle, we're giving old things a
new life. This means we don't have to make
as many new things, which uses less energy
and helps the Earth stay cooler.
Recycle

72. Just like being a helper in class, we can be
helpers to nature. Pick up trash when you
see it, and be kind to animals. If we all work
together, we can make the Earth a better
place.
Be a Nature Helper

73. Renewable Energy
One of the main solutions to addressing climate change is
the transition to renewable energy such as solar, wind,
and hydropower. These energies produce fewer emissions
and are key to a sustainable future.

74. Mitigation
Strategy
Other mitigation strategies include
increasing energy efficiency,
reforestation, and changing
consumption and production patterns.
Every individual can contribute
by reducing their carbon
footprint.

75. Adaptation
Strategy
This includes building climate resilient
infrastructure, protecting ecosystems,
and better land use planning.
In addition to mitigation, we need
to adapt to the inevitable
impacts of climate change.

76. Climate change is a global
challenge that requires
collective action.
By raising awareness and
adopting sustainable
measures, we can protect the
planet for future generations.

77. you
Thank