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Photosynthesis Oxygen Production Experiment

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Photosynthesis Oxygen Production Experiment

Aquatic plant producing oxygen bubbles

🔬 Part 1: Experiment Setup & Hypothesis

1. What is your hypothesis? What do you think will happen when the aquatic plant is placed under light?
2. What do you predict will happen when the same plant is placed in darkness?
3. Complete the photosynthesis equation by filling in the blanks:

_____________ + Water + _____________ → Glucose + _____________

4. What do the bubbles coming from the aquatic plant represent?

Carbon dioxide being absorbed

Oxygen being produced

Water evaporating

Glucose being made

📊 Part 2: Data Collection & Analysis

5. Record your bubble count data in the table below:

Light Condition:

Trial 1 (4 minutes): _____ bubbles

Trial 2 (4 minutes): _____ bubbles

Trial 3 (4 minutes): _____ bubbles

Average: _____ bubbles


Dark Condition:

Trial 1 (4 minutes): _____ bubbles

Trial 2 (4 minutes): _____ bubbles

Trial 3 (4 minutes): _____ bubbles

Average: _____ bubbles

6. Which condition produced more oxygen bubbles?

Light condition

Dark condition

Both produced the same amount

7. Why do you think chlorophyll is important for photosynthesis?

🧠 Part 3: Analysis & Reflection

8. Did your results support your hypothesis? Explain using evidence from your experiment.
9. How does photosynthesis help plants create energy (ATP) for cellular processes?
10. Why is photosynthesis important for all living things, not just plants?
11. Extension: What other factors might affect the rate of photosynthesis in plants?

Water temperature

Amount of carbon dioxide

Type of light

Plant age

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