Ecosystems Quiz Year 10 Revision

What is an ecosystem?

• A system in which organisms interact with each other and with their environment

• A system in which organisms interact only with each other

• A system in which organisms interact only with their environment

• A system in which organisms do not interact with each other or their environment

Which of the following is an abiotic component of an ecosystem?

• Plants

• Insects

• Air

• Animals

Which of the following is a biotic component of an ecosystem?

• Air

• Water

• Heat

• Plants

What is the role of decomposers in the nutrient cycle?

• They take in nutrients from the soil

• They break down dead organisms and return nutrients to the soil

• They eat plants and return nutrients to the soil

• They release nutrients into the air

What is the total mass of living organisms per unit area called?

• Biomass

• Litter

• Flora

• Fauna

Which biome has the greatest biomass?

• Tropical Rainforest

• Temperate Forest

• Tundra

• Grassland

What is the surface layer of vegetation that breaks down to become humus called?

• Biomass

• Litter

• Flora

• Fauna

Which biome is characterized by hot and wet climates?

• Tropical Rainforest

• Temperate Forest

• Tundra

• Grassland

What is the main component of a food web?

• Simple food chains

• Plants

• Animals

• Nutrient cycle

Which layer of the rainforest receives the most sunlight?

• Emergent Layer

• Canopy Layer

• Understory Layer

• Forest Floor