Thursday January 15, 2014.

Honors Biology

LAB:  In Your Lab Journal
Complete Lab: Leaf Disk Assay

Summary of Background Paragraph

Title: Leaf Disk Assay

Benchmark:  Choose from Wall

Materials used

Table 1: Individual Results

Your results plus the results of your class groups.

Graph your results- Follow directions.  Use intervals of 1

Answer the following questions:

Questions for Review

  1. What does a plant need for photosynthesis?
  2. a. What are the products of photosynthesis?
  3. What is a by-product of photosynthesis?
  4. Where does photosynthesis occur in a plant?
  5. Write a hypothesis that this experiment is designed to test.
  6. Which syringe serves as a control?
  7. What variables are tested in this experiment?
  8. Compare the test groups. Which syringe had the most leaf disks floating after 20 minutes?
  9. Were there any syringes without floating disks?
  10. How do floating disks correspond to the rate of photosynthesis?
  11. According to your data, does light intensity affect the rate of photosynthesis? Explain.
  12. How did the baking soda solution affect photosynthetic rates?
  13. Why is photosynthesis a light-dependent reaction?

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