Ecosystems: Food Chains

What is a food chain?

• A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

• A food chain is a circular sequence of organisms where each organism eats the one before it.

• A food chain is a sequence of organisms that do not rely on each other for nutrients and energy.

• A food chain is a process where organisms produce their own food through photosynthesis.

What are the three main components of a food chain?

• predators, prey, and scavengers

• herbivores, carnivores, and omnivores

• producers, consumers, and decomposers

• photosynthesis, respiration, and digestion

In a food chain, what is the role of producers?

• Producers consume energy from other organisms.

• Producers break down organic matter into nutrients.

• Producers convert sunlight into energy through photosynthesis.

• Producers release carbon dioxide into the atmosphere.

Give an example of a producer in a food chain.

• Animals

• Rocks

• Clouds

• Plants

What are primary consumers?

• Organisms that feed directly on predators

• Organisms that feed directly on producers

• Organisms that feed directly on decomposers

• Organisms that feed directly on consumers

Provide an example of a primary consumer in a food chain.

• rabbit

• lion

• eagle

• shark

What is the role of secondary consumers in a food chain?

• They have no role in the food chain.

• They are the top predators in the food chain.

• They feed on primary producers and transfer energy through the food chain.

• They feed on primary consumers and transfer energy through the food chain.

Name a secondary consumer in a food chain.

• Lion

• Kangaroo

• Giraffe

• Elephant

What are decomposers and what is their role in an ecosystem?

• Decomposers are organisms that help in the process of photosynthesis in an ecosystem.

• Decomposers are organisms that eat other organisms in an ecosystem.

• Decomposers are organisms that break down dead organic matter into simpler substances and recycle nutrients in an ecosystem.

• Decomposers are organisms that produce oxygen in an ecosystem.

Give an example of a decomposer in a food chain.

• fungi

• insects

• plants

• bacteria