IB skill practice

Classify biodiversity and use dichotomous keys

Paper 1, Paper 2 5 marks Difficulty 4

Explain biodiversity index meaning

A biodiversity comparison in a wetland ecology survey shows Site A has more species and a more even distribution than Site B. Interpret what this suggests about biodiversity. Use the diagram labels, allele model, food-web arrows, or data values before answering. Enter the answer and choose the interpretation that best matches the biological evidence.

Worked practice: biological evidence and answer

Use the labelled biological evidence first, then connect it to the final answer.