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There are three levels of organisation in an ecosystem - Edexcel - GCSE Biology - Question 2 - 2021 - Paper 1
Question 2
There are three levels of organisation in an ecosystem. Which order shows the levels of organisation from lowest to highest? A community, population, organism B comm... show full transcript
Worked Solution & Example Answer:There are three levels of organisation in an ecosystem - Edexcel - GCSE Biology - Question 2 - 2021 - Paper 1
Step 1
(i) Give one reason why the number of caterpillars will decrease in garden A.
Answer
The number of caterpillars in garden A is likely to decrease because there are fewer slugs available for them to eat. Since slug pellets kill slugs, this reduction in slug population leads to less food for caterpillars.
Step 2
(ii) Give one reason why the number of caterpillars will increase in garden B.
Answer
In garden B, the population of slugs will initially decline after the introduction of slug pellets but is expected to increase over time. As slugs become more abundant again, there will be more food available for the caterpillars, such as lettuce, leading to an increase in their population.