Limiting Factor Graphs Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

PERSONALISED 1-TO-1 TUTORING

Need more help on this topic? Get 1-to-1 support

Get support with clear explanations, practice and feedback (Ages 5 to 16).

  • DBS-checked tutors
  • Flexible times
  • Parents can be updated
Book a free 10-min call See pricing

Want an ad-free experience? Subscribe to remove ads

On a limiting factor graph for photosynthesis, what is usually on the x-axis and what is on the y-axis?

The x-axis shows the level of one factor, such as light intensity, carbon dioxide concentration, or temperature. The y-axis shows the rate of photosynthesis.

What does the first steep, straight part of a light intensity graph for photosynthesis show?

It shows that as light intensity increases, the rate of photosynthesis increases. Light is the limiting factor in this part.

On a photosynthesis graph, what does it mean when the line levels off and becomes flat as the factor on the x-axis keeps increasing?

It means the rate of photosynthesis has stopped increasing. The factor on the x-axis is no longer limiting; another factor is now limiting.

In a limiting factor graph, at the steep rising part, which factor is the limiting factor?

The factor shown on the x-axis is the limiting factor at the steep rising part of the graph.

In a graph of rate of photosynthesis against temperature, what happens to the rate after the optimum temperature is passed?

After the optimum, the rate of photosynthesis falls. Enzymes controlling photosynthesis start to denature at higher temperatures.

How can you find the optimum temperature for photosynthesis from a temperature graph?

The optimum temperature is the point on the graph where the rate of photosynthesis is highest.

What does it mean if a graph of photosynthesis rate against light intensity is a straight line that goes through the origin?

The rate is directly proportional to light intensity. When light intensity doubles, the rate of photosynthesis doubles in this region.

On a graph with two curves of rate against light, one at low carbon dioxide and one at high carbon dioxide, what does it show if the high CO2 curve is higher?

It shows that extra carbon dioxide lets the plant photosynthesise faster. At high light levels, carbon dioxide was acting as a limiting factor.

How can limiting factor graphs help greenhouse growers avoid wasting money on extra light or carbon dioxide?

If the graph shows the rate has already levelled off, adding more light or carbon dioxide will not increase the rate. Growers can stop adding that factor at this point to save money.

How do limiting factor graphs for light or carbon dioxide differ in shape from the graph for temperature?

For light or carbon dioxide, the rate rises then levels off in a flat line. For temperature, the rate rises to an optimum, then falls again at higher temperatures.

Previous Topic
Back to Lesson
Next Topic