Limiting factors on photosynthesis (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a limiting factor in photosynthesis?
What is a limiting factor in photosynthesis?
A condition restricting rate when scarce
If the distance from a light source doubles, what happens to light intensity?
If the distance from a light source doubles, what happens to light intensity?
It falls to a quarter
A lamp is 2 metres from a plant. Using , what fraction of original intensity remains?
A lamp is 2 metres from a plant. Using , what fraction of original intensity remains?
Why do farmers optimise greenhouse conditions like light, CO₂ and temperature?
Why do farmers optimise greenhouse conditions like light, CO₂ and temperature?
To increase growth and profits
What is the current concentration of carbon dioxide in the atmosphere?
What is the current concentration of carbon dioxide in the atmosphere?
0.04%
At approximately what temperature do enzymes needed for photosynthesis denature?
At approximately what temperature do enzymes needed for photosynthesis denature?
45°C
What is the optimum temperature range for photosynthesis in most plants?
What is the optimum temperature range for photosynthesis in most plants?
15°C to 40°C
What is often the main limiting factor for photosynthesis in the UK?
What is often the main limiting factor for photosynthesis in the UK?
Water
How do plants in shaded areas adapt to lower light levels?
How do plants in shaded areas adapt to lower light levels?
They increase chlorophyll content
What is true about the compensation point in shade-adapted plants?
What is true about the compensation point in shade-adapted plants?
It is lower than sun-adapted plants