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Figure 8 shows an area of nettle plants - Edexcel - GCSE Biology - Question 5 - 2019 - Paper 1
Question 5
Figure 8 shows an area of nettle plants. Grass does not grow among the nettles. (a) Explain why grass does not grow where there are nettles. (2)
Worked Solution & Example Answer:Figure 8 shows an area of nettle plants - Edexcel - GCSE Biology - Question 5 - 2019 - Paper 1
Step 1
Explain why grass does not grow where there are nettles.
Answer
Grass does not grow among nettles primarily due to the competition for resources. Nettle plants tend to grow densely, creating a shaded environment that limits sunlight availability for grass. This lack of sunlight reduces the photosynthetic activity of grass, hindering its growth.
Additionally, nettles can deplete essential nutrients from the soil more effectively than grass due to their extensive root system. This resource competition can prevent grass from establishing and thriving in areas inhabited by nettles.