WJEC A Level Biology
WJEC A Level Biology 2.1 Biodiversity and Classification Exam Questions
Free WJEC A Level Biology exam questions on 2.1 Biodiversity and Classification, with mark schemes. Covers biodiversity, classification, the three domains, evidence for relationships and natural selection.
2.1 Biodiversity and Classification 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.
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WJEC A Level Biology 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 WJEC A Level Biology 2.1 Biodiversity and Classification
This topic covers how organisms are grouped and how biodiversity arises. Expect index of diversity calculations and classification questions.
What you need to know
- Classification Hierarchy of domain, kingdom, phylum, class, order, family, genus and species, with binomial naming.
- Three domains Bacteria, Archaea and Eukarya, based on molecular evidence.
- Evidence for relationships DNA hybridisation, base sequences, amino acid sequences and immunological comparisons.
- Biodiversity Species richness and Simpson's index of diversity; natural selection and adaptation drive biodiversity.
Common mistakes in 2.1 Biodiversity and Classification
- Writing species names without a capital for the genus.
- Confusing species richness with diversity index.
- Saying organisms adapt deliberately.
Try three 2.1 Biodiversity and Classification exam-style questions
1. State the eight taxonomic ranks in order. (1 mark)
Show the mark scheme answer
Domain, kingdom, phylum, class, order, family, genus, species.
2. Explain how DNA base sequences show evolutionary relationships. (2 marks)
Show the mark scheme answer
More closely related species have more similar base sequences (1) because they shared a common ancestor more recently (1).
3. Define species. (2 marks)
Show the mark scheme answer
A group of organisms with similar features (1) that can interbreed to produce fertile offspring (1).
2.1 Biodiversity and Classification FAQs
What does Biodiversity and Classification cover?
Classification, the three domains, molecular evidence and biodiversity.
Do I need Simpson's index?
Yes, to calculate and compare biodiversity.
Which practical links here?
Sampling to measure biodiversity in a habitat.
Revise this topic with flashcards: WJEC A Level Biology Flashcards, with mark scheme answers for Anki and Quizlet.
