Plants are producers that make their own food through photosynthesis. During photosynthesis, plants use sunlight, carbon dioxide, and water to produce oxygen and sugar (chemical energy). Animals cannot produce their own food and must consume other organisms, such as plants or other animals, to obtain energy. The process of photosynthesis and the roles of producers and consumers in the food chain are essential for life on Earth.

1. Plants
and
photosynthesis

2. All organisms on Earth need
energy to live and grow.

3. The primary
source of all
energy that
Earth’s organisms
need is the
Sun.

4. But animals can’t eat
sunlight.

5. But animals can’t eat
sunlight.
Animals get energy by
consuming (eating) other
organisms (plants or animals).

6. Animals are consumers.

7. Animals are consumers.

8. Animals are consumers.

9. Animals must eat (consume) to
get the energy they need.

10. But there is one type of
organism that can produce
food from sunlight energy.
Plants
Plants are producers.
Produce means “to make.”
Producers make food from
sunlight energy.

11. But there is one type of
organism that can produce
food from sunlight energy.
Plants
Plants are producers.
Produce means “to make.”
Producers make food from
sunlight energy.

12. But there is one type of
Plants are producers.
organism that can produce
food from sunlight energy.
Plants
Plants are producers.
Produce means “to make.”
Producers make food from
sunlight energy.

13. But there is one type of
Plants are producers.
organism that can produce
food from sunlight energy.
Produce means “to make.”
Plants
Plants are producers.
Produce means “to make.”
Producers make food from
sunlight energy.

14. Producers make food
from
sunlight energy.

15. Plants are producers.
They make food.
Only plants
can make
food.

16. Plants
make
food in
their
leaves.

17. A green material in
leaves called
chlorophyll
(klor oh fil)
turns light energy
from the sun into
chemical energy
(sugar).

18. Plants must have three things
in order to make food.
light
water
CO2 (Carbon dioxide)

19. Plants must have three things
in order to make food.
light

20. Plants must have three things
in order to make food.
light
water

21. Plants must have three things
in order to make food.
light
water H2Oalso called

22. Plants must have three things
in order to make food.
light
water H2Oalso called
Carbon dioxide

23. Plants must have three things
in order to make food.
light
water H2Oalso called
Carbon dioxide CO2

24. Plants get the light
they need from the
Sun.

25. Plants get the CO2,
carbon dioxide, they
need from the air.

26. CO2 (carbon dioxide)
is a gas that makes up about
1% of Earth’s atmosphere.

27. Plants get the
water they need
from their roots.

28. The process of plants
turning sunlight energy,
CO2, and water into
chemical energy
(food, sugar) is called

29. The process of plants
turning sunlight energy,
CO2, and water into
chemical energy
(food, sugar) is called
photosynthesis

30. The process of plants
turning sunlight energy,
CO2, and water into
chemical energy
(food, sugar) is called
photosynthesis
(foh toh sin theh sis)

31. photosynthesis
Photo means “light”

32. photosynthesis
Photo means “light”
synthesis mean “to put together”

33. photosynthesis
Photo means “light”
synthesis mean “to put together”
Photosynthesis mean
“to put together with light.”

34. photosynthesis
Photo means “light”
synthesis mean “to put together”
Photosynthesis mean
“to put together with light.”
Plants “put food together” using
light energy in the process called
photosynthesis.

35. Plants take in
carbon dioxide
(CO2) and use
it during
photosynthesis.

36. Plants release
(throw away)
oxygen as a
waste product
as they make
food.

37. Plants release
(throw away)
oxygen as a
waste product
as they make
food.
Oxygen is a gas that
makes up 21% of the air.

38. Plants can’t live
without CO2 and must
release oxygen.
Animals can’t live
without oxygen and
must release CO2.

39. This is a very important
balance for life on Earth.

40. Review:

41. Review:
What waste gas is
released by plants as
they make food?

42. Review:
What waste gas is
released by plants as
they make food?
Oxygen

43. Review:
What gas is needed
by plants as they
make food?

44. Review:
What gas is needed
by plants as they
make food?
Carbon dioxide; CO2

45. Review:
What waste gas is
released by animals as
they live and breathe?

46. Review:
What waste gas is
released by animals as
they live and breathe?
Carbon dioxide; CO2

47. Review:
What is the process in
which plants make food
from sunlight?

48. Review:
What is the process in
which plants make food
from sunlight?
Photosynthesis

49. Review:
In what part of the plant is
food (chemical energy; sugar)
made during photosynthesis?

50. Review:
In what part of the plant is
food (chemical energy; sugar)
made during photosynthesis?
The leaves

51. Review:
What is the name for the
chemical energy that plants
need to live and grow?

52. Review:
What is the name for the
chemical energy that plants
need to live and grow?
Sugar

53. Review:
What is the name of the
green substance in plants
that uses sunlight energy to
make sugar in the leaves of
plants?

54. Review:
What is the name of the
green substance in plants
that uses sunlight energy to
make sugar in the leaves of
plants?
Chlorophyll

55. Review:
What is the name for the
chemical energy that plants
need to live and grow?

56. Review:
What is the name for the
chemical energy that plants
need to live and grow?
Sugar

57. Review:
What is the name for the
chemical energy that animals
need to live and grow?

58. Review:
What is the name for the
chemical energy that animals
need to live and grow?
Sugar

59. What three things do plants
need in order to make food
in photosynthesis?

60. What three things do plants
need in order to make food
in photosynthesis?
Sunlight

61. What three things do plants
need in order to make food
in photosynthesis?
Sunlight
Water

62. What three things do plants
need in order to make food
in photosynthesis?
Sunlight
Water H2O

63. What three things do plants
need in order to make food
in photosynthesis?
Sunlight
Water H2O
Carbon dioxide

64. What three things do plants
need in order to make food
in photosynthesis?
Sunlight
Water H2O
Carbon dioxide CO2

65. Review:
What is another way to say
carbon dioxide?

66. Review:
What is another way to say
carbon dioxide?
CO2

67. Review:
What is another way to say
water?

68. Review:
What is another way to say
water?
H2O

69. Photosynthesis
sunlight
CO2
Carbon dioxide
H2O
water

70. Photosynthesis
sunlight
CO2
Carbon dioxide
H2O
water

71. Photosynthesis
sunlight
CO2
Carbon dioxide
H2O
water