OCR A Level Biology A
OCR A Level Biology A Classification and Evolution Exam Questions
Free OCR A Level Biology A exam questions on Classification and Evolution, with mark schemes. Covers classification, the three domains, binomial naming, variation and natural selection.
Classification and Evolution 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 Classification and Evolution
This topic covers how organisms are grouped and how they evolve.
What you need to know
- Classification Taxonomic hierarchy and binomial naming.
- Domains Archaea, Bacteria and Eukarya, and the five kingdoms.
- Variation Continuous and discontinuous variation, and t-tests.
- Evolution Natural selection, adaptations and evidence for evolution.
Common mistakes in Classification and Evolution
- Writing species names without italics or capitals correctly.
- Saying individuals evolve.
- Confusing the t-test and chi-squared test.
Try three Classification and Evolution exam-style questions
1. State the order of taxonomic ranks. (1 mark)
Show the mark scheme answer
Domain, kingdom, phylum, class, order, family, genus, species.
2. Explain how antibiotic resistance evolves. (3 marks)
Show the mark scheme answer
Mutation produces a resistant bacterium (1); antibiotics kill non-resistant bacteria (1); resistant ones survive and reproduce, passing on the allele (1).
3. Give one piece of evidence for evolution. (1 mark)
Show the mark scheme answer
Fossils, comparative anatomy or DNA sequences.
Classification and Evolution FAQs
What does this topic cover?
Classification, domains, variation and natural selection.
What statistical test compares two means?
The Student's t-test.
Why is classification changing?
Molecular evidence reveals new relationships.
Revise this topic with flashcards: OCR A Level Biology A H420 Flashcards, with mark scheme answers for Anki and Quizlet.
