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Photosynthesis, Respiration and Transpiration

Photosynthesis, Respiration and Transpiration. Essential Standard 6. L. 1. 2. Photosynthesis. Photosynthesis:. This is the process by which plants make their own food Photosynthesis takes place in the leaf !

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Photosynthesis, Respiration and Transpiration

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  1. Photosynthesis, Respiration and Transpiration Essential Standard 6. L. 1. 2

  2. Photosynthesis

  3. Photosynthesis: • This is the process by which plants make their own food • Photosynthesis takes place in the leaf! • Chloroplasts are found in the cells of the leaf and contain chlorophyll ( a green pigment that absorbs the light energy from the sun)

  4. Sunlight is used to provide the energy necessary for photosynthesis to take place • Plants use carbon dioxide gas from the air and water taken in through the roots to make sugar (food) • Oxygen is produced during the process of photosynthesis

  5. The oxygen is released into the air, through openings, or pores, in the leaf called stomata. • Photosynthesis provides the oxygen in the atmosphere that most living organisms need

  6. Chloroplasts make the sugars!

  7. Leaves are green because they contain the pigment: Plants chlorophyll Leaves have a large surface area to absorb as much light as possible "Thanks for the Glucose!"

  8. Visible light is only a small part of the electromagnetic spectrum (all forms of light).

  9. Why is photosynthesis important? Give some ideas as to why you think it is important!

  10. Photosynthesis-starts to ecological food webs!

  11. Respiration Food = Energy

  12. Respiration: • The food (sugar) that is created through the process of photosynthesis is used to provide energy needed by the plants to perform life functions • To get the energy, plants must break down the sugar in a process called respiration

  13. Respiration

  14. In this process, oxygen from the air combines with the sugar • The sugar is then broken down into carbon dioxide and water • Energy is then released • The released energy can then be used by the plant to perform life functions • Carbon dioxide and water that are formed are given off through the leaves (transpiration)

  15. Transpiration • The loss of water vapor in plants is called transpiration. • This occurs as a product of the process of respiration. • Most of the water vapor escapes through structures in the leaf called stomata, which are located on the underside of the leaf. • The primary function of the stomata is to regulate the exchange of carbon dioxide and water vapor with the atmosphere.

  16. Without a way to control transpiration, plants would whither up and die • Plants are able to control transpiration by using guard cells

  17. Guard cells are located on the bottom of the leaf and open and close the stomata (plural; Greek for mouth) • When the stomata are closed, no water is released.

  18. Plant leaves have many types of cells!

  19. Plant Cells

  20. Tropisms Standard- 6-2.8 http://upload.wikimedia.org/wikipedia/commons/7/7d/Brunnichia_ovata_.jpg http://upload.wikimedia.org/wikipedia/commons/8/8e/Phototropism.jpg http://scienceprojectideasforkids.com/wp-content/uploads/2010/07/plant-upside-down-planting.jpg http://o.quizlet.com/kxXvps6OUB5gyh5TIlElgg_m.jpg

  21. Plant Tropisms • STUMULUSA change in the environment that causes a response or reaction. • RESPONSE The reply to the change in the environment or stimulus. • DORMANCY An inactive period when the plant or seed prepares for harsh conditions • Dormancy allows various species to survive in particular environments. • Dormancy helps to ensure seeds will germinate when conditions are favorable for survival of the small seedlings.

  22. TROPISMSStandard 6-2.8 • TROPISMSPlants can change their growth in response to their environment. • PHOTOTROPISMThe way a plant grows or bends in response to LIGHT. • GRAVITROPISMThe way a plant grows in response to GRAVITY. • HYDROTROPISMThe way a plant grows in response to water. • THIGMOTROPISMThe way a plant grows or bends in response to touch.

  23. Standard- 6-2.9 Fungi They are a kingdom of organisms that DO NOT make their own food. Many types grow in or on other organisms, such as plants. Grain mold, corn smut and wheat/leaf rust cause diseases on the plants. If a fungus infects a tree, fruit ,or grass, it can eventually kill the plant. All fungi are not harmful. * Some can be eaten and used for medicines. Examples- mushrooms, blue cheese, and penicillin

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