1. Which is the main energy source for producers?

2. Which of these is a decomposer?

3. Check all that are producers:

4. Match each organism (left) with its role (right). Draw lines.

5. In 2–3 sentences, explain how energy moves from the sun through a food web (include producers, consumers, decomposers).

6. Draw a simple New Zealand food web. Include at least: sun, grass (or fern), insect, bird, worm, fungus. Label each as producer, consumer or decomposer and draw arrows to show energy flow.

7. Predict one likely effect on the food web if worms disappeared. Give two short points.

8. Energy transfer calculation: Only about 10% of energy passes to the next level.

a) If grass captures 10,000 kJ of energy, how much energy is available to primary consumers? _________ kJ

b) How much energy would be available to secondary consumers (10% of primary consumers)? _________ kJ