Photosynthesis Lab
Hypothesis/Purpose:Is that the black paper should stop photosynthesis because it block sunlight from reaching the leaf. I think the black paper decreases the intensity. The clear paper doesn't stop photosynthesis and increases the intensity of the wavelength of light.
Materials:
- calendula (plant)
- black paper
- test tubes
- pipettes
- cellophane
- Lugol's iodine
- petri dish
- scissors
- tape
Materials:
- calendula (plant)
- black paper
- test tubes
- pipettes
- cellophane
- Lugol's iodine
- petri dish
- scissors
- tape
Procedure:
1. Cover 3 leaves in cellophane, black paper, and clear papaer
2. Wait 48 hours
3. Cut off experimental and control leaves, remove the papers
4. Roll up leaves and put into test tube and label
5. Extract chlorophyll with hot alcohol
6. Rinse in water
7. Place in petri dish
8. Cover with iodine
9. Wait 1 minute, then remove leaf and place on paper towel
10. Observe and record observations in a data table, giving numerical value for color change
1. Cover 3 leaves in cellophane, black paper, and clear papaer
2. Wait 48 hours
3. Cut off experimental and control leaves, remove the papers
4. Roll up leaves and put into test tube and label
5. Extract chlorophyll with hot alcohol
6. Rinse in water
7. Place in petri dish
8. Cover with iodine
9. Wait 1 minute, then remove leaf and place on paper towel
10. Observe and record observations in a data table, giving numerical value for color change
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Analysis/conclusion: The results of our experiment did not mirror our hypothesis.It was actually the opposite of what our hypothesis was.
In conclusion we learned about how different wavelengths effect photosynthesis differently. The stronger the wavelength the faster photosynthesis happens.
Reflection:For this Lab we tested the photosynthesis in leaves. I enjoyed working with my group And we were able to finish efficiently and we were able to do it well.
In conclusion we learned about how different wavelengths effect photosynthesis differently. The stronger the wavelength the faster photosynthesis happens.
Reflection:For this Lab we tested the photosynthesis in leaves. I enjoyed working with my group And we were able to finish efficiently and we were able to do it well.