Part 1: Understanding Classification

1. Why do scientists use classification systems to organise living things? Circle the best answer:

To make living things look prettier

To help organise, identify, and communicate about living things

To count how many animals exist

To make science more difficult

2. What is a dichotomous key?

3. Check all the characteristics that would be useful for classifying plants:

Leaf shape

Flower colour

Plant height

The plant's favourite music

Number of petals

Stem texture

Part 2: Using a Dichotomous Key

4. Use this simple dichotomous key to classify the Australian animals below:

Dichotomous Key for Australian Animals:

1a. Has fur or hair ............................ go to 2

1b. Does not have fur or hair ................ go to 3

2a. Lays eggs ................................. Monotreme

2b. Gives birth to live young ................ go to 4

3a. Has feathers .............................. Bird

3b. Has scales ................................ Reptile

4a. Has a pouch ............................... Marsupial

4b. Does not have a pouch .................... Placental mammal

Classify these animals using the key above:

Kangaroo: ___________________

Platypus: ___________________

Kookaburra: _________________

Blue-tongue lizard: ___________

Dingo: ______________________

Koala: ______________________

Part 3: Creating Your Own Classification Key

5. Design a simple dichotomous key for these 6 classroom objects: pencil, apple, rock, feather, coin, leaf

Your Dichotomous Key:

6. What three characteristics did you choose to distinguish between the objects? Why?

Part 4: Cultural Perspectives on Classification

7. First Nations Australians have their own traditional classification systems. How might these differ from modern scientific classification?

8. Match the classification approach with its focus:

1. Traditional Indigenous classification

2. Modern scientific classification

3. Linnaean system

A. Based on evolutionary relationships

B. Uses cultural knowledge and ecological relationships

C. Kingdom, phylum, class, order, family, genus, species

9. Why is it important to respect and learn from different classification systems?

Part 5: Reflection and Communication

10. What challenges did you encounter when creating your dichotomous key?

11. Draw a simple diagram showing how you would classify these Australian native plants based on their leaf shapes:

Eucalyptus (long, narrow leaves), Banksia (serrated edges), Wattle (small, round leaflets)

12. Circle the statement that best describes why clear communication is important in scientific classification:

So scientists can understand each other's work and build on it

To make science sound more complicated

To impress other people

Because it's a rule that must be followed

13. Explain one way that classification helps us understand biodiversity in Australia:

Classification and Dichotomous Keys

Classification and Dichotomous Keys

Part 1: Understanding Classification

Part 2: Using a Dichotomous Key

Part 3: Creating Your Own Classification Key

Part 4: Cultural Perspectives on Classification

Part 5: Reflection and Communication

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

More Science Worksheets

Variables in Science Investigations

Forensic Science Word Search

Science Observation Recording Sheet

Science Objects Exploration

Sports Science Introduction

Senior Social Science Icebreaker

What is Science?

Grade 7 Science Revision