🌿 Part 1: Multiple Choice

Circle the best answer for each question.

1. Which of the following best describes a producer in an ecosystem?

An animal that eats other animals

An organism that makes its own food using sunlight

An organism that breaks down dead matter

An animal that only eats plants

2. In a food chain, energy is transferred from one organism to the next. Approximately how much energy is passed on to the next level?

100%

50%

10%

1%

3. Which of the following is an example of a decomposer?

Eagle

Grass

Mushroom

Kangaroo

4. Select all the factors that are part of the abiotic (non-living) environment. Tick all that apply.

Temperature

Soil type

Wombats

Rainfall

Eucalyptus trees

Sunlight

✏️ Part 2: Short Answer

Answer each question in full sentences using scientific vocabulary.

5. Look at the food chain below. Identify the producer, primary consumer, and secondary consumer.

Grass → Grasshopper → Blue-tongue Lizard → Wedge-tailed Eagle

Producer: _______________________

Primary Consumer: _______________________

Secondary Consumer: _______________________

6. Explain what would happen to the grasshopper and eagle populations if all the grass in the ecosystem was removed. Use the terms producer and food chain in your answer.

7. What is the difference between a food chain and a food web? Why is a food web a more accurate model of an ecosystem?

8. A bushfire destroys a large section of a eucalyptus forest in Victoria. Describe two ways this event could affect the ecosystem, including both living and non-living components.

🎨 Part 3: Build a Food Web

Use the organisms listed below to draw your own food web in the box provided. Draw arrows to show the direction of energy flow. Make sure every organism is included!

9. In your food web above, which organism is the apex predator (top of the food chain)? Explain how you know.