OCR A Level Biology A
OCR A Level Biology A Biodiversity Exam Questions
Free OCR A Level Biology A exam questions on Biodiversity, with mark schemes. Covers sampling, species richness and evenness, Simpson's index and conservation.
Biodiversity 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.
From £10.99View flashcards
About OCR A Level Biology A Biodiversity
This topic covers how biodiversity is measured and protected.
What you need to know
- Levels Habitat, species and genetic diversity.
- Sampling Random and non-random sampling with quadrats and transects.
- Simpson's index D = 1 − Σ(n/N)².
- Conservation In situ and ex situ conservation and international agreements.
Common mistakes in Biodiversity
- Using biased sampling without justification.
- Confusing richness and evenness.
- Calculating Simpson's index with the wrong formula.
Try three Biodiversity exam-style questions
1. State the difference between species richness and evenness. (2 marks)
Show the mark scheme answer
Richness is the number of species (1); evenness is how similar their population sizes are (1).
2. Give one advantage of ex situ conservation. (1 mark)
Show the mark scheme answer
Protects species from threats such as poaching.
3. Explain why random sampling is used. (1 mark)
Show the mark scheme answer
To avoid bias.
Biodiversity FAQs
What does Biodiversity cover?
Measuring and conserving biodiversity.
Which practical links here?
Sampling using quadrats and calculating Simpson's index.
What does a high Simpson's index mean?
High biodiversity.
Revise this topic with flashcards: OCR A Level Biology A H420 Flashcards, with mark scheme answers for Anki and Quizlet.
