Standard Science Primary 6 Interactions

What is the main role of decomposers, such as fungi and bacteria, in an ecosystem?

A To provide food for herbivores
B To control the population of predators
C To return nutrients from dead matter to the soil
D To produce oxygen for animals
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Worked Solution

Step 1: Decomposers break down dead organisms and waste products. Step 2: During this process, they release nutrients trapped in the dead matter. Step 3: These nutrients are returned to the soil for plants to reuse. Step 4: This maintains the nutrient cycle in the ecosystem.

Correct answer: To return nutrients from dead matter to the soil

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