Limiting factors on photosynthesis (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a limiting factor in photosynthesis?
What is a limiting factor in photosynthesis?
A condition restricting the rate when scarce
Which of these is NOT a limiting factor for photosynthesis?
Which of these is NOT a limiting factor for photosynthesis?
Oxygen concentration
Why does a photosynthesis rate graph level off?
Why does a photosynthesis rate graph level off?
Another factor becomes limiting
How can farmers boost photosynthesis in greenhouses?
How can farmers boost photosynthesis in greenhouses?
Increase light, CO₂ and optimal temp
What benefit do farmers get from optimizing photosynthesis?
What benefit do farmers get from optimizing photosynthesis?
Faster growth, higher yields, more profit
If distance from a light source doubles, light intensity becomes:
If distance from a light source doubles, light intensity becomes:
A quarter of original value
What is the light intensity at 2 metres from a lamp?
What is the light intensity at 2 metres from a lamp?
of original value
What is the current CO₂ concentration in the atmosphere?
What is the current CO₂ concentration in the atmosphere?
Around 0.04%
At what temperature do enzymes for photosynthesis denature?
At what temperature do enzymes for photosynthesis denature?
Around 45°C
What is the optimum temperature range for most plants?
What is the optimum temperature range for most plants?
15°C to around 40°C
What is often the main limiting factor in the UK?
What is often the main limiting factor in the UK?
Water
What do shade-adapted plants have compared to sun plants?
What do shade-adapted plants have compared to sun plants?
A lower compensation point