GCSE AQA Biology Organisation of an Ecosystem: A student estimated the percenta

Question

A student estimated the percentage cover of buttercup plants in a field. 
The student used a quadrat. 
The quadrat was divided into 25 equal squares.

Figure 10 shows the quadrat.

This is the method used.  
1. Place the quadrat on the ground.  
2. Record how many squares in the quadrat contain buttercup plants.  
3. Place the quadrat in a new position in the field.  
4. Record how many squares in the quadrat contain buttercup plants.  
5. Repeat steps 3 and 4 another three times.

Calculate mean value X in Table 1.

X = ______ %

Question 6 continues on the next page.

The student's method of estimating the percentage cover of buttercup plants is not accurate.
How does Figure 11 show this? Tick (✓) one box.  
Quadrat 1 has more groups of buttercup plants.  
The area of buttercup plants in quadrat 5 is much larger.  
The buttercup plants are in ten squares in both quadrats.

The student wanted to get a more valid estimate of the percentage cover of buttercup plants in the field.
Suggest two improvements to the method to make the results more valid.

1 ___________
2 ___________

Give three environmental factors that would affect the growth of buttercup plants in a field.

1 ___________
2 ___________
3 ___________

A student estimated the percentage cover of buttercup plants in a field - AQA - GCSE Biology - Question 6 - 2021 - Paper 1

Worked Solution & Example Answer:A student estimated the percentage cover of buttercup plants in a field - AQA - GCSE Biology - Question 6 - 2021 - Paper 1

Calculate mean value X in Table 1.

How does Figure 11 show this?

Suggest two improvements to the method to make the results more valid.

Give three environmental factors that would affect the growth of buttercup plants in a field.

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