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TN-BIO-GR12-61450 · v1.-1

Core Rules of Evolution

Grade 12 · Biology · Evolution · Cambridge (CAIE)

Grade

Grade 12

Subject

Biology

Topic

Evolution

Subtopic

Core Rules of Evolution

Curriculum

Cambridge (CAIE)

Difficulty

Foundation

Time

10 minutes

Total marks

37

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 10 minutes.
  5. Complete the reflection box at the end before you hand the sheet in.

Warm-up

Bloom: Remember · 2 marks

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

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

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

    [1]

Recall

Bloom: Remember · 2 marks

Complete from memory. No calculator, no notes.

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

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

    [1]

FreeMathWorksheet · TN-BIO-GR12-61450 · v1.-1

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

Page 1 of 4

FreeMathWorksheet · Grade 12 Biology

Core Rules of Evolution

Basic Practice

Bloom: Understand · 3 marks

Work through each item. Show the step you used.

  1. 1.Work out 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.Work out part 3 using the rule for core rules of evolution.

    [1]

Guided Practice

Bloom: Understand · 4 marks

The first step is given. Finish the reasoning.

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

    [2]
  2. 2.Complete the method for part 2. Step 1 has been started for you.

    [2]

Independent Practice

Bloom: Apply · 6 marks

No scaffolding. Set out your full method.

  1. 1.Work out fully 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.Calculate part 3 on core rules of evolution without help.

    [2]

FreeMathWorksheet · TN-BIO-GR12-61450 · v1.-1

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

Page 2 of 4

FreeMathWorksheet · Grade 12 Biology

Core Rules of Evolution

Challenge Questions

Bloom: Analyse · 6 marks

Harder items. Attempt every one, even partially.

  1. 1.Show that the statement in part 1 about core rules of evolution.

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

    [3]

Real-life Application

Bloom: Apply · 6 marks

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

  1. 1.Apply a real biology situation that depends on core rules of evolution.

    [3]
  2. 2.Use the information to decide 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.Compare and justify a student's method for core rules of evolution is or is not efficient.

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

    [4]

FreeMathWorksheet · TN-BIO-GR12-61450 · v1.-1

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

Page 3 of 4

FreeMathWorksheet · Grade 12 Biology

Core Rules of Evolution

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

    [—]

FreeMathWorksheet · TN-BIO-GR12-61450 · v1.-1

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

Page 4 of 4