2. Photosynthesis Chapter 1 Lesson 3 Ms. Schiavone

3. In this lesson, we will: Demonstrate how all living things rely on the process of photosynthesis to obtain energy. (GLE 0507.3.1)

4. What is Photosynthesis? All living things need energy to survive. Animals eat food to get energy. Plants make their own food. Where do plants get energy to make food? The SUN

5. What is Photosynthesis? Plants use the energy from the sun to make their own food through a process called photosynthesis. Photosynthesis occurs in cells that have chloroplasts. We know that plant cells contain chloroplasts. Chloroplast: Food-Making Factory

6. What is Photosynthesis? Photosynthesis Sunlight + Water + Carbon Dioxide + Chlorophyll = Food and oxygen The food is in the form of sugar, or starch.

7. Photosynthesis Sunlight Water Carbon Dioxide Chlorophyll _______________________________ Food and oxygen The food is in the form of sugar, or starch. What is Photosynthesis?

9. Energy for photosynthesis comes from the sun. Sugars made by the leaf go into the leaf’s veins and then to all parts of the plant. The oxygen made by the plant is released into the air.

10. Listening Quiz 1.Every living thing needs ______ to survive. A.Plants B.Energy C.Chloroplasts D.Oxygen

11. Listening Quiz 2. Plants get energy to make food from _________. A.Sunlight B.water C.Chloroplasts D.chlorophyll

12. Listening Quiz 3. _______ make their own food. A.Plants B.Animals

13. Listening Quiz 4. _______ are the food-making factories of plants. A.Sunlight B.water C.Chloroplasts D.chlorophyll

14. Listening Quiz 5. Photosynthesis occurs in cells that have ______________. A.Sunlight B.water C.Chloroplasts D.chlorophyll

15. Listening Quiz 6. Sunlight, ________, and water are needed to perform photosynthesis. A.Sunlight B.water C.Oxygen D.Carbon dioxide

16. Listening Quiz 7. _________ is a waste product produced from photosynthesis. A.Sunlight B.water C.Oxygen D.Carbon dioxide

17. Listening Quiz 8. Plants use sunlight, water, and carbon dioxide along with chlorophyll to produce food, otherwise known as _________. A.Sugar B.Carbon dioxide C.Photosynthesis D.Oxygen

18. Listening Quiz 9. The process by which plants make their own food is called ________. A.Sugar B.Carbon dioxide C.Energy D.Photosynthesis

19. Listening Quiz 10. The _____ produced during photosynthesis go into the leaf’s veins and then to all parts of the plant. A.Sugars B.Carbon dioxide C.Energy D.Photosynthesis

20. What do leaves do? The leaves of a plant carry on photosynthesis. The roots absorb water and carry it up to the leaves through the xylem.

21. What do leaves do? The carbon dioxide plants need for photosynthesis enters the plant from the air through tiny holes in the bottom of the leaf called stomata. A single hole is called a stoma.

22. What do leaves do? The job of opening and closing the stomata is done by guard cells located on each side of the stoma. The guard cells open and close the stomata in response to the amount of water and light the plant receives. When a plant has too little water, guard cells will close the stomata to preserve water. When a plant has plenty of water, guard cells will swell and open stomata, allowing water and air to leave the plant.

24. What do leaves do? The epidermis is the outermost part of the leaf. The top of the leaf surface has a waxy cuticle, a waterproof layer that prevents moisture from evaporating.

25. What do leaves do? Sugars that are produced during photosynthesis are transported to the rest of the plant through a type of tissue called phloem.

26. What do leaves do? Scientists express what happens during photosynthesis with the following chemical equation: 6CO 2 + 6H 2 O + energy  C 6 H 12 O 6 + 6O 2

27. Listening Quiz 1. After plant’s roots absorb water, it is carried up to the leaves through the ______. A.Phloem B.Xylem C.Stomata D.Epidermis

28. Listening Quiz 2. Carbon dioxide enters plants through ________ A.Roots B.Xylem C.Stomata D.Epidermis

29. Listening Quiz 3. ______ have the job of opening and closing the stomata. A.Roots B.Xylem C.Stomata D.Guard cells

30. Listening Quiz 4. When the guard cells open the stomata, ________ and carbon dioxide is released. A.Carbon dioxide B.Water C.Stomata D.Guard cells

31. Listening Quiz 5. When the stomata are open, the leaf can let in carbon dioxide and give off __________. A.Carbon dioxide B.Water C.Oxygen D.Sugar

32. Listening Quiz 6. The outer layer of a leaf is called the _____________. A.Xylem B.Phloem C.Epidermis D.Stomata

33. Listening Quiz 7. The waterproof, waxy covering on the surface of leaves that keeps water from evaporating from the leaf is called ________. A.Xylem B.Cuticle C.Epidermis D.Stomata

34. Listening Quiz 8. After photosynthesis occurs, the _______ carries sugars to other parts of the plant. A.Xylem B.Cuticle C.Phloem D.Stomata

35. Listening Quiz 9. 6CO 2 + 6H 2 O + energy  C 6 H 12 O 6 + 6O 2 The equation about is a chemical equation for ______________. A.Photosynthesis B.Energy C.Food D.Stomata

36. Listening Quiz 10. Energy for photosynthesis to take place comes from the _________. A.Water B.Leaves C.Sun D.Soil

37. What is the photosynthesis and respiration cycle? All living things need energy to carry out their life processes. The photosynthesis and respiration cycle provides energy to plants and animals. The sugar that plants produce during photosynthesis is a carbohydrate.

38. What is the photosynthesis and respiration cycle? Carbohydrate is the name for substances made from carbon, hydrogen, and oxygen. Simple carbohydrates can be stored as food or modified to make structural materials. When plants store sugar, they usually store it as starch.

39. What is the photosynthesis and respiration cycle? The cell walls of plant cells are made of cellulose. Starch and cellulose are complex carbohydrates made of thousands of simple sugar units.

40. What is the photosynthesis and respiration cycle? Animals depend on photosynthesis as their source of energy. When animals eat plants, it takes in stored carbohydrates from the plant.

41. What is the photosynthesis and respiration cycle? When animals are carnivores and eat other animals, they are taking in carbohydrates that animals gained from eating a plant in the first place.

42. Grass gets energy from the sun. Then it produces carbohydrates through the process of photosynthesis. The deer eats the grass and gains carbohydrates (energy) from the grass. The wolf eats the deer and gains carbohydrates (energy) from the deer who originally gained it from the eating the grass.

43. What is the photosynthesis and respiration cycle? Some of the oxygen produced during photosynthesis is breathed in by animals during respiration. Some of the oxygen is used by plants.

44. What is the photosynthesis and respiration cycle? When plants or animals need energy, they can get it from stored carbohydrates. The energy stored in carbohydrates is released when cells use oxygen to break down the sugars in a process called cellular respiration.

45. What is the photosynthesis and respiration cycle? Cellular respiration and photosynthesis can be thought of as opposites. During cellular respiration, plant and animal cells produce carbon dioxide and water, which are then released back into the air. During photosynthesis, plants use the carbon dioxide along with water to produce sugars.

46. Listening Quiz 1.All living things need __________ in order to survive. A.Energy B.Photosynthesis C.Carbon dioxide D.Oxygen

47. Listening Quiz 2. The sugar that plants produce during photosynthesis is a ________________ A.Photosynthesis B.Energy C.Carbon dioxide D.Carbohydrate

48. Listening Quiz 3. _______ is a group of substances made from carbon, hydrogen, and oxygen. A.Photosynthesis B.Carbohydrate C.Carbon dioxide D.Energy

49. Listening Quiz 4. When plants store sugar, they usually store it as _________. A.Water B.Carbohydrate C.Starch D.Oxygen

50. Listening Quiz 5. Plant’s cell walls are made of ______________. A.Cytoplasm B.Chloroplasts C.Cellulose D.Oxygen

51. Listening Quiz 6. Animals depend on ________ as their source of energy. A.Cytoplasm B.Respiration C.Cellulose D.Photosynthesis

52. Listening Quiz 7. When an animal eats a plant, it takes in ________ stored in the plant. A.Cytoplasm B.Respiration C.Carbohydrates D.Photosynthesis

53. Listening Quiz 8. When carnivores eat ___________, they get carbohydrates from the animals they eat. A.Sugar B.Plants C.Animals D.Dinner

54. Listening Quiz 9. Oxygen produced by plants through photosynthesis is breathed in by animals during ________________. A.Respiration B.The morning C.photosynthesis D.Dinner

55. Listening Quiz 10. Cellular respiration is the opposite of ___________. A.Respiration B.Carbohydrates C.Photosynthesis D.Dinner

56. What are energy pyramids? About 10% of the sun’s actual energy gets turned into food energy by a producer. An energy pyramid shows the amount of energy available at each level of an ecosystem.

57. What are energy pyramids? The bottom of the pyramid represents the producers. It is the largest level because it contains the most organisms and therefore the most energy.

58. What are energy pyramids? There are fewer numbers of organisms and less available energy at each ascending level of the pyramid.

59. What are energy pyramids? When a producer is eaten, only about 10% of the food energy it contains gets turned into herbivore or omnivore tissue. The rest is used or turned into heat energy.