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Plants, Transpiration, Photosynthesis and Respiration

Plants, Transpiration, Photosynthesis and Respiration. Vocabulary Tier 2: distinction, consume, complementary, processes, energy, products, guard, regulate

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Plants, Transpiration, Photosynthesis and Respiration

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  1. Plants, Transpiration, Photosynthesis and Respiration Vocabulary Tier 2: distinction, consume, complementary, processes, energy, products, guard, regulate Tier 3: organism, photosynthesis, respiration, glucose, carbon dioxide, oxygen, chlorophyll, epidermis, cuticle, stomata, guard cells, transpiration

  2. Parts of a Flower Review YOU MUST KNOW THESE PARTS & FUNCTIONS 1. Stamen 2. Stigma 3. Ovary 4. Petals-bright and odor 5. Pistil 6. Anther 7. Ovule 8. Pollen grains 9. Sepals Interactive Parts of the Flower • http://www.bbc.co.uk/schools/scienceclips/ages/9_10/life_cycles.shtml

  3. Today’s Learning Goals • Transpiration(water loss through stomata) regulated by the guard cells through their opining/closing • Leaves have epidermis with cuticles and stomata to prevent water loss; guard cells control the opening of the stomata • In plants, chlorophyll (found in chloroplasts) captures energy from the sun in order to make food during photosynthesis • Photosynthesis and cellular respiration are complementary processes: Plants carry on photosynthesis/respiration where food is broken down into energy • Plants make their own food through photosynthesis, animals consume energy rich food

  4. Transpiration Brain Pop http://www.brainpop.com/science/cellularlifeandgenetics/plantgrowth/

  5. Transpiration Critical Thinking: • Do you think plants would lose more water to transpiration in windy conditions or non-windy conditions? 2. Do you think plants would lose more water to transpiration in humid conditions or dry conditions? Why? 3. Explain how plant transpiration contributes to the water cycle. 4. Where on Earth would you find the most transpiration? Why? Do you think this has an effect on climate? 5. What would be the effect if humans were to plant a huge number of leafy trees in one county of North Carolina. They would plant so many there they would cover the land. Do you think conditions there would be different? Why or why not? Transpiration—stoma are small openings on the underside of leaves which are used for gas exchange, (O2 & CO2). Guard cells on each side help open & close stoma. Plants also lose water through the stoma. So, stoma are usually closed during the hottest part of the day so they don’t lose so much water. Plants only use about 10% of the water they absorb from the Earth. The rest is released into the atmosphere through transpiration.

  6. PhotosynthesisMedia Clips • Discovery Education Video Photosynthesis • Brain pop Photosynthesis

  7. How Does a Plant Make It’s Own Food? • Plants use carbon dioxide (CO2), water (H2O), and sun’s energy to make food. • This is called “photosynthesis” • The food gives plants energy • Animals get the energy stored in plants when they eat them.

  8. How Do Plants Get Energy From Sun? • Plants have pigments that absorb energy from light • Chlorophyll (found in chloroplasts) is the pigment used in photosynthesis

  9. What “Food” do Plants Make? • The “food” plants make is a sugar called glucose (C6H12O6). • Glucose and oxygen (O2) are made during photosynthesis.

  10. How Do Organisms Get Energy From Food? • Animals cannot make their own food like plants can. • But, BOTH plants and animals must break down (digest) food in order to get energy from it (so they can live, grow, & develop) • Cells do this 2 ways: cellular respiration and fermentation

  11. Check It Out! • Did you notice that cellular respiration is just the opposite of photosynthesis? • Photosynthesis Rap • Photosynthesis Song

  12. Today’s Learning Goals • Transpiration(water loss through stomata) regulated by the guard cells through their opining/closing • Leaves have epidermis with cuticles and stomata to prevent water loss; guard cells control the opening of the stomata • In plants, chlorophyll (found in chloroplasts) captures energy from the sun in order to make food during photosynthesis • Photosynthesis and cellular respiration are complementary processes: Plants carry on photosynthesis/respiration where food is broken down into energy • Plants make their own food through photosynthesis, animals consume energy rich food

  13. Photosynthesis and Respiration in Aquatic Plants 1. Read and annotate the Photosynthesis and Respiration article http://www.aquariumlife.net/articles/aquatic-plants/pjotosynthesis-respiration-aquatic-plants/152.asp 2. Use the information from the article to Explain why it is important for an aquarium owner to be very careful in how s/he sets up his or her aquarium.

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