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Radish Experiment:

Radish Experiment:. Weigh out 3 batches of radish seeds each weighing 1.5 g. 1.5 g. 1.5 g. 1.5 g. Radish Seeds. 1.5 g. 1.5 g. 1.5 g. 3) No Light, Water. 2) Light, Water. 1) Light, No Water.

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Radish Experiment:

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  1. Radish Experiment: • Weigh out 3 batches of radish seeds each weighing 1.5 g. • 1.5 g • 1.5 g • 1.5 g

  2. Radish Seeds • 1.5 g • 1.5 g • 1.5 g 3) No Light, Water 2) Light, Water • 1) Light, • No Water

  3. After 1 week, all plant material was dried in an oven overnight (no water left) and plant biomass was measured in grams.

  4. Q1. Predict the biomass of the plant biomass each treatment. Discuss in groups: write your predictions on carbonless (1 per group). • 1.5 g • 1.5 g • 1.5 g • (1) Light, • No Water (2) Light, Water (3) No Light, Water

  5. RESULTS 1.46 g 1.83 g 1.17 g

  6. Q2. In groups, on your carbonless, write an explanation for the results observed in each treatment. 1.46 g 1.83 g 1.17 g

  7. Most important reaction in the world!!

  8. Photosynthesis CO2 +H2O C6H12O6 + O2 Q4. In a plant, what happens to the glucose?

  9. Photosynthesis CO2 + H2O C6H12O6 + O2 Respiration Biosynthesis New Organic Molecules(carbs, fats, lipids, nucleic acids) ATP CO2, H2O

  10. Primary Production • “amount of light energy converted to chemical energy” (photosynthesis) • NPP = Photosynthesis - Respiration • Amount of photosynthate (glucose/food) available to other organisms • Measured in grams Net Primary Production (NPP)

  11. Q3. How does NPP influence trophic structure?

  12. Which treatment illustrates NPP? 1.46 g 1.83g 1.17 g

  13. Q4. How would you measure NPP? • a) count plants • b) weigh plants • c) use fancy equipment • d) all of the above

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