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TN-BIO-O-LVL-39173 · v2.6

Core Rules of Evolution

O Level · Biology · Evolution · OCR

Grade

O Level

Subject

Biology

Topic

Evolution

Subtopic

Core Rules of Evolution

Curriculum

OCR

Difficulty

Core

Time

25 minutes

Total marks

54

Student name

Teacher name

Date

Learning objectives

  • Recognise core rules of evolution accurately in biology contexts.
  • Explain the underlying rule of core rules of evolution in the student's own words.
  • Apply core rules of evolution to multi-step and unfamiliar problems.
  • Justify a chosen method and identify errors in another student's work.

Skills assessed

  • Fluency and recall
  • Method and setting out
  • Reasoning and justification
  • Problem solving in context
  • Self-assessment

Instructions

  1. Write your name, your teacher's name and the date in the header.
  2. Answer every question in the space provided. Continue on the back if needed.
  3. Show all working — method marks are awarded even when the final answer is wrong.
  4. Aim to finish in about 25 minutes.
  5. Complete the reflection box at the end before you hand the sheet in.

Warm-up

Bloom: Remember · 4 marks

Answer quickly. These check you are ready for the topic.

  1. 1.Circle one fact you already know about core rules of evolution.

    [1]
  2. 2.Write down one fact you already know about core rules of evolution.

    [1]
  3. 3.State one fact you already know about core rules of evolution.

    [1]
  4. 4.Circle one fact you already know about core rules of evolution.

    [1]

Recall

Bloom: Remember · 4 marks

Complete from memory. No calculator, no notes.

  1. 1.Define the key term used in core rules of evolution described here: item 1.

    [1]
  2. 2.List the key term used in core rules of evolution described here: item 2.

    [1]
  3. 3.Define the key term used in core rules of evolution described here: item 3.

    [1]
  4. 4.Label the key term used in core rules of evolution described here: item 4.

    [1]

FreeMathWorksheet · TN-BIO-O-LVL-39173 · v2.6

© 2026 FreeMathWorksheet. Licensed for classroom and home use. Redistribution or resale is not permitted.

Page 1 of 4

FreeMathWorksheet · O Level Biology

Core Rules of Evolution

Basic Practice

Bloom: Understand · 5 marks

Work through each item. Show the step you used.

  1. 1.Match part 1 using the rule for core rules of evolution.

    [1]
  2. 2.Identify part 2 using the rule for core rules of evolution.

    [1]
  3. 3.Identify part 3 using the rule for core rules of evolution.

    [1]
  4. 4.Match part 4 using the rule for core rules of evolution.

    [1]
  5. 5.Complete part 5 using the rule for core rules of evolution.

    [1]

Guided Practice

Bloom: Understand · 8 marks

The first step is given. Finish the reasoning.

  1. 1.Using the first step given, finish part 1. Step 1 has been started for you.

    [2]
  2. 2.Continue the working for part 2. Step 1 has been started for you.

    [2]
  3. 3.Continue the working for part 3. Step 1 has been started for you.

    [2]
  4. 4.Using the first step given, finish part 4. Step 1 has been started for you.

    [2]

FreeMathWorksheet · TN-BIO-O-LVL-39173 · v2.6

© 2026 FreeMathWorksheet. Licensed for classroom and home use. Redistribution or resale is not permitted.

Page 2 of 4

FreeMathWorksheet · O Level Biology

Core Rules of Evolution

Independent Practice

Bloom: Apply · 10 marks

No scaffolding. Set out your full method.

  1. 1.Solve part 1 on core rules of evolution without help.

    [2]
  2. 2.Work out fully part 2 on core rules of evolution without help.

    [2]
  3. 3.Work out fully part 3 on core rules of evolution without help.

    [2]
  4. 4.Calculate part 4 on core rules of evolution without help.

    [2]
  5. 5.Calculate part 5 on core rules of evolution without help.

    [2]

Challenge Questions

Bloom: Analyse · 9 marks

Harder items. Attempt every one, even partially.

  1. 1.Find and justify the statement in part 1 about core rules of evolution.

    [3]
  2. 2.Deduce the statement in part 2 about core rules of evolution.

    [3]
  3. 3.Find and justify the statement in part 3 about core rules of evolution.

    [3]

FreeMathWorksheet · TN-BIO-O-LVL-39173 · v2.6

© 2026 FreeMathWorksheet. Licensed for classroom and home use. Redistribution or resale is not permitted.

Page 3 of 4

FreeMathWorksheet · O Level Biology

Core Rules of Evolution

Real-life Application

Bloom: Apply · 6 marks

Use the skill in context. State units in your answer.

  1. 1.Use the information to decide a real biology situation that depends on core rules of evolution.

    [3]
  2. 2.In context, work out a real biology situation that depends on core rules of evolution.

    [3]

Critical Thinking

Bloom: Evaluate · 8 marks

Explain your reasoning in full sentences.

  1. 1.Explain why a student's method for core rules of evolution is or is not efficient.

    [4]
  2. 2.Evaluate whether a student's method for core rules of evolution is or is not efficient.

    [4]

Reflection

Bloom: Create · 0 marks

Not marked. Answer honestly — this guides your next worksheet.

  1. 1.Record how confident you feel with core rules of evolution and what you will practise next.

    [—]
  2. 2.Describe how confident you feel with core rules of evolution and what you will practise next.

    [—]

FreeMathWorksheet · TN-BIO-O-LVL-39173 · v2.6

© 2026 FreeMathWorksheet. Licensed for classroom and home use. Redistribution or resale is not permitted.

Page 4 of 4