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Table of Contents

Table of Contents. Vocabulary Triangles. On p. 1 of your notebook, make vocabulary triangles for the following terms: Products Reactants Stomata Transpiration Photosynthesis Chlorophyll You can write all six on the same page. Plant Processes: Gas Exchange and Photosynthesis.

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Table of Contents

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  1. Table of Contents

  2. Vocabulary Triangles • On p. 1 of your notebook, make vocabulary triangles for the following terms: • Products • Reactants • Stomata • Transpiration • Photosynthesis • Chlorophyll • You can write all six on the same page

  3. Plant Processes: Gas Exchange and Photosynthesis

  4. What is gas exchange in plants? • When we inhale, we breathe in a mixture of gases we need for survival • When we exhale, we breathe out the waste products • In plants, CO₂ and H₂O are two substances needed for survival • CO₂ enters through the stomata • H₂O is absorbed through roots of the plant and released as water vapor through the stomata

  5. Gas Exchange • Light, H₂O and CO₂ all affect the opening and closing of stomata • Stomata are usually open during the day and close at night • When stomata closes, less CO₂ can enter and less H₂O can escape • When plants lose water vapor through stomata, this is called transpiration

  6. Photosynthesis • Photosynthesis is the process inwhich plants use light energy to make food • Chlorophyll is a chemical in plants that helps to capture this light energy • Other than light, plants also need H₂O and CO₂ • These molecules combine to form an organic compound, a carbohydrate (sugar) called glucose

  7. Process of Photosynthesis 6CO₂ + 6H₂O + light energy  C₆H₁₂O₆ + 6O₂ Carbon dioxide + water + light (and chlorophyll) produces glucose and oxygen • A plant needs 6 molecules of carbon dioxide (CO₂) and 6 molecules of water (H₂O) to make one molecule of glucose (C₆H₁₂O₆) • The chemical bonds in glucose contain the energy the plant needs for growth and survival and is the main source of food for plants • Oxygen is produced as a waste product during photosynthesis and released through plant stomata

  8. BrainPop • View the video and write the answers at the bottom of page 2 in your notebook

  9. Graphic Organizer • On each side of your graphic organizer, write the following: See the side board for a model. • What? • Where? • Why? • Who? • And copy the equations for photosynthesis and respiration (p. 430 and 432)

  10. In your groups: • Using pp. 426-434, answer the questions on the organizer. • Using the equations and the materials that you have read, fill in the boxes on the photocopy with either: USES or PRODUCES

  11. Uses Carbon Dioxide produces • Produces Oxygen uses • Uses water produces • Produces glucose uses • Stores energy releases

  12. Science Journal • Look at the chemical equations for Photosynthesis and respiration. What comparisons can you make about them? What do you notice about the products and the reactants of each?

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