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EnglandBiologyQuick questions
3.7 Genetics, populations, evolution and ecosystems
Quick questions on Populations in ecosystems: carrying capacity, limiting factors, predator-prey cycles and estimating population size - AQA A-Level Biology
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
Define carrying capacity and explain how intraspecific competition keeps a population near it. [3 marks]
What is q2?Show answer
Using a predator-prey graph, explain why the predator population peaks after the prey population. [3 marks]
What is q3?Show answer
A student marked 30 snails, released them, then later caught 25 snails of which 5 were marked. Estimate the population and state two assumptions of the method. [3 marks]
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