06.1 Explain how the nettle is adapted for defence and protection - AQA - GCSE Biology - Question 6 - 2018 - Paper 1
Question 6
06.1 Explain how the nettle is adapted for defence and protection.
06.2 Which plant oil is the most effective at preventing the growth of bacteria?
Give a reason fo... show full transcript
Worked Solution & Example Answer:06.1 Explain how the nettle is adapted for defence and protection - AQA - GCSE Biology - Question 6 - 2018 - Paper 1
Step 1
Explain how the nettle is adapted for defence and protection.
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Answer
Nettles have stinging hairs that can inflict pain upon herbivores. This deterrent helps to prevent animals from eating them, ensuring that more of the plant remains intact. Additionally, these hairs cause discomfort which reduces the likelihood of herbivores damaging the plant.
Step 2
Which plant oil is the most effective at preventing the growth of bacteria? Give a reason for your answer.
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Answer
Oil: Clove (oil)
Reason: Clove oil has the largest areas where no bacteria are found, indicating it allows for the largest inhibition zone.
Step 3
Give one reason why this is not a valid conclusion.
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Answer
Antibiotics were not tested, which means the conclusion regarding the effectiveness of tea tree oil compared to antibiotics lacks sufficient evidence.
