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Practice Worksheet

TN-BIO-O-LVL-75618 · v3.2

Applying Evolution

O Level · Biology · Evolution · CBSE

Grade

O Level

Subject

Biology

Topic

Evolution

Subtopic

Applying Evolution

Curriculum

CBSE

Difficulty

Core

Time

30 minutes

Total marks

54

Student name

Teacher name

Date

Learning objectives

  • Recognise applying evolution accurately in biology contexts.
  • Explain the underlying rule of applying evolution in the student's own words.
  • Apply applying 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 30 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 applying evolution.

    [1]
  2. 2.State one fact you already know about applying evolution.

    [1]
  3. 3.Name one fact you already know about applying evolution.

    [1]
  4. 4.Circle one fact you already know about applying evolution.

    [1]

Recall

Bloom: Remember · 4 marks

Complete from memory. No calculator, no notes.

  1. 1.List the key term used in applying evolution described here: item 1.

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

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

    [1]
  4. 4.Complete the key term used in applying evolution described here: item 4.

    [1]

FreeMathWorksheet · TN-BIO-O-LVL-75618 · v3.2

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

Page 1 of 4

FreeMathWorksheet · O Level Biology

Applying Evolution

Basic Practice

Bloom: Understand · 5 marks

Work through each item. Show the step you used.

  1. 1.Identify part 1 using the rule for applying evolution.

    [1]
  2. 2.Identify part 2 using the rule for applying evolution.

    [1]
  3. 3.Complete part 3 using the rule for applying evolution.

    [1]
  4. 4.Complete part 4 using the rule for applying evolution.

    [1]
  5. 5.Work out part 5 using the rule for applying evolution.

    [1]

Guided Practice

Bloom: Understand · 8 marks

The first step is given. Finish the reasoning.

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

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

    [2]
  3. 3.Using the first step given, finish part 3. Step 1 has been started for you.

    [2]
  4. 4.Continue the working for part 4. Step 1 has been started for you.

    [2]

FreeMathWorksheet · TN-BIO-O-LVL-75618 · v3.2

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

Page 2 of 4

FreeMathWorksheet · O Level Biology

Applying Evolution

Independent Practice

Bloom: Apply · 10 marks

No scaffolding. Set out your full method.

  1. 1.Calculate part 1 on applying evolution without help.

    [2]
  2. 2.Calculate part 2 on applying evolution without help.

    [2]
  3. 3.Determine part 3 on applying evolution without help.

    [2]
  4. 4.Work out fully part 4 on applying evolution without help.

    [2]
  5. 5.Calculate part 5 on applying evolution without help.

    [2]

Challenge Questions

Bloom: Analyse · 9 marks

Harder items. Attempt every one, even partially.

  1. 1.Prove the statement in part 1 about applying evolution.

    [3]
  2. 2.Show that the statement in part 2 about applying evolution.

    [3]
  3. 3.Prove the statement in part 3 about applying evolution.

    [3]

FreeMathWorksheet · TN-BIO-O-LVL-75618 · v3.2

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

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FreeMathWorksheet · O Level Biology

Applying Evolution

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 applying evolution.

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

    [3]

Critical Thinking

Bloom: Evaluate · 8 marks

Explain your reasoning in full sentences.

  1. 1.Explain why a student's method for applying evolution is or is not efficient.

    [4]
  2. 2.Evaluate whether a student's method for applying 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 applying evolution and what you will practise next.

    [—]
  2. 2.Reflect on how confident you feel with applying evolution and what you will practise next.

    [—]

FreeMathWorksheet · TN-BIO-O-LVL-75618 · v3.2

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

Page 4 of 4