Quiz · Cultivating curiosity: the wonders of soils

Quiz

4 questions · Pass at 70% · +30 pts on first pass

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Question 1 · Single choice — select one

Which group of soil organisms is often referred to as “ecosystem engineers”?

Microorganisms such as bacteria and fungi. Macrofauna such as earthworms, termites, and ants. Protozoa and nematodes. Springtails and mites.

Question 2 · Single choice — select one

How do mesofauna, such as springtails and mites, contribute to the soil food web?

They produce sugars through photosynthesis that feed microorganisms. They fix atmospheric nitrogen and supply it directly to plants. They primarily create large burrows that improve water infiltration. They graze on microorganisms and fragment organic matter.

Question 3 · Single choice — select one

Which of these statements best describes the role of microorganisms in soil?

They form the foundation of the soil food web by decomposing organic matter and driving nutrient cycling. They transport seeds and organic matter through the soil. They primarily feed on insects and other soil biota. They improve soil structure by creating tunnels and pores.

Question 4 · Single choice — select one

Why is a high diversity of soil organisms important for healthy soils?

High biodiversity ensures that every soil process is carried out by several species performing exactly the same function. Larger soil animals can replace microorganisms when environmental conditions change. Different organisms perform complementary roles that together support many soil functions. Soil biodiversity mainly benefits agricultural soils and has little importance in natural ecosystems.