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A student investigated the width of leaves on nettle plants growing in two areas next to a woodland - Edexcel - GCSE Biology - Question 4 - 2022 - Paper 1
Question 4
A student investigated the width of leaves on nettle plants growing in two areas next to a woodland. Figure 5a shows a nettle plant and Figure 5b shows a map of the... show full transcript
Worked Solution & Example Answer:A student investigated the width of leaves on nettle plants growing in two areas next to a woodland - Edexcel - GCSE Biology - Question 4 - 2022 - Paper 1
Step 1
Give one reason why the student always measured a leaf from the fourth pair of leaves.
Answer
The student always measured a leaf from the fourth pair of leaves to ensure consistency in the measurements. This allows for valid comparisons, as measuring from the same leaf position helps to control for variabilities such as age and size of the leaves, leading to more reliable data.