Photosynthesis Lab Answer Key
Explore how plants use light, water, and carbon dioxide to produce glucose and oxygen through photosynthesis.
Prior Knowledge Questions
Q1.What do plants need to make their own food?
Plants need sunlight, water, and carbon dioxide (CO₂) to make their own food through photosynthesis.
Q2.What gas do plants release during photosynthesis?
Plants release oxygen (O₂) as a byproduct of photosynthesis.
Q3.Where does photosynthesis take place in a plant cell?
Photosynthesis takes place in the chloroplasts, which contain the green pigment chlorophyll.
Activity A – Light Intensity
Q1.What happens to the rate of photosynthesis as light intensity increases?
As light intensity increases, the rate of photosynthesis increases until it reaches a maximum plateau.
Q2.Why does the rate of photosynthesis level off at high light intensities?
The rate levels off because other factors (like CO₂ concentration or temperature) become limiting factors.
Q3.What is the equation for photosynthesis?
6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂
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