Required Practical: Photosynthesis Rate (OCR GCSE Biology A (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is measured to determine the rate of photosynthesis in this practical?
What is measured to determine the rate of photosynthesis in this practical?
The amount of oxygen produced
Which plant is specifically named as an example of pondweed used in this practical?
Which plant is specifically named as an example of pondweed used in this practical?
Elodea
Why is sodium hydrogen carbonate added to the water?
Why is sodium hydrogen carbonate added to the water?
To provide a consistent source of CO₂
What measurement indicates the volume of oxygen produced?
What measurement indicates the volume of oxygen produced?
Distance the oxygen bubble travels
What time period is given as an example for measuring oxygen production?
What time period is given as an example for measuring oxygen production?
5 minutes
How is light intensity varied in this experiment?
How is light intensity varied in this experiment?
Move the lamp closer or further away
What equipment is used to control the temperature of the water?
What equipment is used to control the temperature of the water?
A water bath
When testing one factor, what should be done with the other factors?
When testing one factor, what should be done with the other factors?
Keep them constant
What happens to photosynthesis rate as light intensity increases?
What happens to photosynthesis rate as light intensity increases?
Increases then levels off
Why does photosynthesis rate decrease at high temperatures?
Why does photosynthesis rate decrease at high temperatures?
Enzymes denature
What happens to photosynthesis rate when more CO₂ is added?
What happens to photosynthesis rate when more CO₂ is added?
Increases until another factor limits
Where is understanding these factors particularly important for plant growth?
Where is understanding these factors particularly important for plant growth?
In greenhouses