Exploring Ecosystems for Grade 4

What is an ecosystem?

• A place where only plants live

• A community of living and non-living things interacting with each other

• A type of weather pattern

• A large body of water

Which of the following is a non-living component of an ecosystem?

• Animals

• Plants

• Water

• Insects

What do we call animals that eat only plants?

• Carnivores

• Herbivores

• Omnivores

• Decomposers

Which of the following is a producer in an ecosystem?

• Lion

• Mushroom

• Oak tree

• Eagle

What role do decomposers play in an ecosystem?

• They produce food for plants

• They break down dead organisms

• They hunt other animals

• They provide shelter for animals

Which of the following is an example of a food chain?

• Sun → Grass → Rabbit → Fox

• Water → Fish → Bear

• Tree → Bird → Cat

• Soil → Worm → Bird

What is the primary source of energy for most ecosystems?

• The Moon

• The Sun

• The Wind

• The Ocean

Which of the following is a role of a producer in an ecosystem?

• To decompose dead material

• To create energy from sunlight

• To hunt other animals

• To provide shelter for animals

What is a food web?

• A single path of energy flow in an ecosystem

• A complex network of interconnected food chains

• A type of plant that grows in water

• A tool used by scientists to catch fish

How does a food web differ from a food chain?

• A food web shows only one path of energy flow, while a food chain shows multiple paths

• A food web shows multiple paths of energy flow, while a food chain shows only one path

• A food web is a type of plant, while a food chain is a type of animal

• A food web is used to catch fish, while a food chain is used to catch birds