1. Focus: Abiotic and Biotic Factors, Photosynthesis
Page 156 March 4, 2013
Focus: Abiotic and Biotic Factors, Photosynthesis
Objective: 6.L.1.2 IWBAT to explain the significance of the processes of photosynthesis, evaluate the importance of abiotic and biotic factors in an ecosystem
HW: ecosystems reading sheet
Warm Up: Glossary Update (see master on your desk)

3. PRE-VIEW 1 2 Look at the two pictures and choose:
Neither of them is living
1 is living, 2 is non-living
2 is living, 1 is non-living
Both 1 and 2 are living
***How did you choose your answer?

4. Introduction to Ecology

5. What is Ecology?

6. What is Ecology??
The study of interactions between organisms and their environment.
It explains how living organisms affect each other and the world they live in.

7. An Organism
Organism: An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and develops

8. An Ecosystem may be very small such as:
A backyard
A pond
A playground

9. Some may be very large like:
The deserts of Africa
The rain forest of Brazil
The saltwater oceans
                                                               

10. All Ecosystems Have…
Example: Think about a pond…
                                                               

11. A Pond Ecosystem
What are some things found in ponds?
                                                               

12. A Pond Ecosystem What are some things found in ponds?
Water, fish, plants, birds, bugs, soil sunlight, air,
bacteria,
animals
                                                               

13. A Pond Ecosystem Are all of these things living?
Water, fish, plants, birds, bugs, soil sunlight, air,
bacteria,
animals
                                                               

14. A Pond Ecosystem
Are all of these things living?
                                                               

15. A Pond Ecosystem
Are all of these things living?
NO!! An ecosystem has many important parts that are living and non-living.
                                                               

16. A Pond Ecosystem Living Non-Living
Are all of these things living?
Living Non-Living
Fish Water
Plants Soil
Birds Sunlight
Bugs Air
Bacteria
                                                               

17. The Nonliving Environment
Abiotic factors- the nonliving parts of an organism’s environment.
Examples include air, water, temperature, rocks and minerals, light, and soil.
Abiotic factors affect an organism’s life.

18. The Living Environment
Biotic factors- all the living (or once-living) organisms that inhabit an environment.
All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection.

19. Biotic Factors The living parts of an ecosystem.
They include animals, plants, fungi, protists, and bacteria.

20. What are the LIVING parts of an ecosystem called?

21. What are the LIVING parts of an ecosystem called? Biotic Factors

22. What are the NON-LIVING parts of an ecosystem called?

23. What are the NON-LIVING parts of an ecosystem called? Abiotic Factors

24. Abiotic or Biotic? How do you know?

25. Abiotic or Biotic?
Biotic

26. Abiotic or Biotic?

27. Abiotic or Biotic?
Abiotic

28. Abiotic or Biotic? How do you know?

29. Abiotic or Biotic?
Abiotic: Water and rocks are non-living

30. Abiotic or Biotic?

31. Abiotic or Biotic?
Abiotic

32. Abiotic or Biotic?

33. Abiotic or Biotic?
Biotic

34. Abiotic or Biotic?

35. Abiotic or Biotic?
Biotic

36. Abiotic or Biotic?

37. Abiotic or Biotic?
Biotic

38. Abiotic or Biotic?

39. Abiotic or Biotic?
Biotic

40. List the biotic and abiotic factors in this ecosystem

41. Biotic and Abiotic Factors in the Ecosystem
Biotic Abiotic
(Living) (Non-Living)
Flowers Water
Plants Soil
Birds Sunlight
Bugs Air
Bacteria Rocks
Animals Rain
                                                                \

42. List the biotic and abiotic factors in this ecosystem

43. Biotic and Abiotic Factors in the Ecosystem
Biotic Abiotic
(Living) (Non-Living)
Zooplankton Water
Phytoplankton Sea Ice
Fish Sunlight
Lobster Air
Seals Rocks
Bears CO2

44. What role do abiotic factors play in an ecosystem?

45. What role do abiotic factors play in an ecosystem?
Sun
*Provides Light, Heat, and Energy
*Without the sun: All biotic factors (all living things) would die

46. What role do abiotic factors play in an ecosystem?
Water
*Provides a place to live for many creatures, hydrates all biotic factors
*Without water: All biotic factors (all living things) would die

47. What role do abiotic factors play in an ecosystem?
Air
*Helps many biotic factors breathe
*Without air: Most biotic factors (most living things) would die

48. What role do abiotic factors play in an ecosystem?
Temperature
*Many creatures can only survive in certain temperatures
*Extreme temperature changes: Could kill many of the biotic factors

49. What role do abiotic factors play in an ecosystem?
Soil
*Provides a home, nutrients, support
*Without the soil: Plants would die and many biotic factors would be affected

50. What would happen to all the biotic factors if there were no abiotic factors?

51. What would happen to all the biotic factors if there were no abiotic factors?
All biotic factors would DIE without abiotic factors!!!!!!

52. What would happen to the biotic factors in this ecosystem if…
There was no sun
There was no water
There was no soil
There were no minerals

53. Plants Make Their Own Food: A Recipe for Photosynthesis

54. Plants: One Part of the Carbon Cycle
When carbon dioxide is taken in by plants, what is that called?
PHOTOSYNTHESIS!

55. Photosynthesis is How Plants Make Their Food
Plants do not need to go to the cafeteria for lunch!
They do need a few special ingredients, though…

56. What is needed for photosynthesis to occur?
Carbon Dioxide (CO2)
The plant’s leaves take in CO2
that is breathed out by
animals (and people).
CO2

57. What is needed for photosynthesis to occur?
Light
The plant’s leaves use the light to make a sugar called glucose.

58. What is needed for photosynthesis to occur?
Water
The plant’s leaves and roots soak up water to use for photosynthesis.

59. What is MADE by plants as a result of photosynthesis?
Water
Plants release water through their leaves. This is called transpiration!

60. What is MADE by plants as a result of photosynthesis?
Oxygen
(O2)

61. What is MADE by plants as a result of photosynthesis?
Sugar (Food)
Plants make their own food by performing photosynthesis

62. A Formula for Photosynthesis
Sun + CO2 + Water = Food + O2 + Water
Sun + + =
CO2
Water
Water
Plant Food + + O2

63. It’s question time! * Photosynthesis
What is the process by which plants make food?
* Photosynthesis
Photosynthesis is the process by which plants make food. A green plant makes food using light energy. Green plants get light energy from the sun.

64. Why do you think there are not many plants in the desert?
Look at this picture of the desert. It is very dry and does not rain much here.
Why do you think there are not many plants in the desert?
Plants need water to do photosynthesis (to make their food).

65. Plants Need Plants Make 3 factors 3 factors plants need plants make
Now it’s YOUR TURN
Plants Need Plants Make
3 factors factors
plants need plants make 65

66. Plants Need Plants Make
PHOTOSYNTHESIS
Plants Need Plants Make
Sunlight
Sugar (Food)
Carbon Dioxide
(CO2)
Oxygen (O2)
Water
Water 66

67. Draw… Draw a Plant. Show the:
3 factors that plants need for photosynthesis
AND
3 factors plants make from photosynthesis 67

68. SUGAR
WATER

69. WHY IS PHOTOSYNTHESIS SO IMPORTANT?
PHOTOSYNTHESIS is one of the most important biological process on earth!
Provides the oxygen (O2) we breathe
Consumes extra Carbon Dioxide CO2
Makes Plant Food
Gives US food! 69

70. What is photosynthesis??
The way plants make their food (sugar)

71. Why do plants need sugar?
Sugar (Glucose) is the food for the plant.
It gives the plant energy to grow.

72. HOW do plants MAKE sugar?
To perform photosynthesis, green plants need...
CHLOROPHYLL!
(Chlorophyll is the green
material in plants that
stores sunlight for plants
to make food)

73. What part of the plant produces food?
In most plants the leaves are the special parts where the most food is made.
Leaves contain a chemical called chlorophyll. Chlorophyll is the green matter in plants that traps light energy to produce food.

74. How Are Plants and Animals Different?
Plants can make their own food.
Plants have chlorophyll
Animals cannot make their own food.
Animals do NOT have chlorophyll (even green animals don’t have it!)

75. This is called… photosynthesis
Plants use water, sunlight and carbon dioxide to make food.
This is called… photosynthesis
Only organisms with the green material CHLOROPHYLL can perform photosynthesis.

76. WHY DO LEAVES CHANGE COLOR IN THE FALL?
Plants make their own food. They take water from the ground through their roots. They take a gas called carbon dioxide from the air. They turn water and carbon dioxide into food using sunlight and something called chlorophyll. Chlorophyll is green. It gives leaves their green color.     Winter days are short and dry. Many plants stop making food in the fall. The chlorophyll goes away. Then we can see orange and yellow colors. These colors were in the leaves all summer, but the green covered them up.
Some leaves turn red. This color is made in the fall, from food trapped in the leaves. Brown colors are also made in the fall. They come from wastes left in the leaves.

77. Photosynthesis: Plants make their food
Sun + CO2 + Water = Food + O2 + Water

78. Photosynthesis: Plants make their food
Plants Need
-Carbon Dioxide
-Water
-Sunlight
Plants Make
-Oxygen
-Water
-Food
Sun + CO2 + Water = Food + O2 + Water

79. Plants have chlorophyll
Why can plants make their food??
Plants have chlorophyll
-Green
-Stores Sunlight
-Only plants have it. This is why plants can use sunlight to make food

80. Plants Make Their Food with Chlorophyll
Word to know: Chlorophyll: The green material in plants that stores sunlight for plants to make food (by photosynthesis)
Why are plants green?
Why can plants make their own food?
How do plants use the sun to make food?
Why aren’t people green?
Why can’t people make their own food?
Because plants have chlorophyll
Because plants have chlorophyll
Chlorophyll absorbs sunlight
Because people don’t have chlorophyll
Because people don’t have chlorophyll

81. Draw A Comic Strip Explaining Photosynthesis
Be creative!
1. Must have a picture in every square
2. Must use all of the following words:
Photosynthesis
Chlorophyll
Carbon Dioxide
Sunlight
Water
Food
***BONUS: If you get done early,
-Add color to your drawing
-Add another box to your comic for more detail 81