Interactions of Limiting Factors (AQA GCSE Biology Combined Science): Quizzes

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Interactions of Limiting Factors
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What is a limiting factor in photosynthesis?

A condition that restricts rate when scarce

Which of these is NOT a limiting factor in photosynthesis?

Oxygen concentration

What does it mean when a graph of photosynthesis rate levels off?

Another factor has become limiting

What happens when a limiting factor increases?

Rate increases until another factor limits

How can farmers optimise greenhouse conditions?

Increase light, CO2CO_2, & temperature

What results from optimising photosynthesis conditions?

Faster growth and higher yields

Why do farmers optimise greenhouse conditions?

To increase profits from higher yields

What does the inverse square law describe?

Light intensity vs distance relationship

When distance from light source doubles, what happens to light intensity?

Falls to a quarter

A lamp is 2 metres from a plant. What fraction of original light intensity remains?

14\frac{1}{4}

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