OCR A Level Biology A
OCR A Level Biology A Populations and Sustainability Exam Questions
Free OCR A Level Biology A exam questions on Populations and Sustainability, with mark schemes. Covers population size, limiting factors, predator-prey relationships, conservation and sustainable management.
Populations and Sustainability exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
StemUp mark scheme flashcards
OCR A Level Biology A H420 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About OCR A Level Biology A Populations and Sustainability
This topic covers populations and their management.
What you need to know
- Population growth Carrying capacity and limiting factors.
- Interactions Predator-prey cycles and competition.
- Conservation Conservation versus preservation.
- Sustainability Sustainable timber and fishing; case studies of human impact.
Common mistakes in Populations and Sustainability
- Confusing conservation with preservation.
- Misreading predator-prey graphs.
- Forgetting density-dependent factors.
Try three Populations and Sustainability exam-style questions
1. Define carrying capacity. (1 mark)
Show the mark scheme answer
The maximum population an environment can support.
2. Explain why predator numbers lag behind prey. (2 marks)
Show the mark scheme answer
Predators need time to reproduce (1) after an increase in food supply (1).
3. Give one method of sustainable fishing. (1 mark)
Show the mark scheme answer
Mesh size limits or fishing quotas.
Populations and Sustainability FAQs
What does this topic cover?
Population size, interactions and sustainable management.
What is intraspecific competition?
Competition between members of the same species.
What is coppicing?
Cutting trees near the base so they regrow, a sustainable method.
Revise this topic with flashcards: OCR A Level Biology A H420 Flashcards, with mark scheme answers for Anki and Quizlet.
