Which of the following is an example of a biotic factor?

• Temperature

• Soil

• Predator

• Water

Which of the following is an abiotic factor?

• Plants

• Animals

• Sunlight

• Fungi

In an ecosystem, which of the following organisms would be classified as a consumer?

• Grass

• Algae

• Deer

• Bacteria

What is the main role of decomposers in an ecosystem?

• To capture sunlight and make food

• To consume herbivores

• To break down dead organisms and recycle nutrients

• To produce oxygen

Which of the following is an example of a density-dependent limiting factor?

• Earthquake

• Temperature

• Disease spread

• Flooding

What is the primary difference between a food chain and a food web?

• A food chain is linear, while a food web is interconnected and complex.

• A food web is linear, while a food chain is interconnected.

• A food chain is for carnivores, while a food web is for herbivores.

• A food web is simpler than a food chain.

Which of the following trophic levels has the most energy in an ecosystem?

• Primary consumers

• Secondary consumers

• Producers

• Tertiary consumers

In an energy pyramid, which level has the least amount of energy?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

Explain the role of producers in an ecosystem.

Observe and find the producers and primary consumers

Answer explanation

a)      Producer:grass or tree

b)      Primary consumer:rabbit or rat or mouse