Energy Flow in Ecosystems

What is the main function of producers in an ecosystem?

• They eat other animals

• They create their own food using energy from the sun

• They recycle energy

• They feed on primary consumers

According to the passage, what do herbivores eat? Fill in the blank: Herbivores eat only _______.

• plants

• meat

• insects

• fish

Which type of consumer feeds directly on producers?

• Primary Consumers

• Secondary Consumers

• Tertiary Consumers

• Decomposers

Based on the passage, classify the following as herbivore, carnivore, or omnivore: An animal that eats both plants and other animals.

• Omnivore

• Herbivore

• Carnivore

• Insectivore

Energy flow in ecosystems starts with producers and not consumers because producers capture energy from the sun and make it available to other organisms. Which of the following best explains this?

• Producers capture energy from the sun and make it available to other organisms.

• Consumers create energy for producers to use.

• Energy flows from consumers to producers first.

• Decomposers start the energy flow in ecosystems.

What is a food web?

• A food web is a more realistic and complex representation of feeding relationships in an ecosystem. It consists of multiple interconnected food chains.

• A food web is a single linear sequence of organisms through which nutrients and energy pass.

• A food web is a diagram showing only producers and consumers in an ecosystem.

• A food web is a chart that shows the population size of different species in an ecosystem.

Why are decomposers important in an ecosystem?

• Decomposers are important because they break down dead organisms and waste, returning vital nutrients to the soil and water, which supports the growth of new producers.

• Decomposers are important because they produce energy from sunlight, which is used by all other organisms.

• Decomposers are important because they directly consume producers and keep their population in check.

• Decomposers are important because they prevent predators from overhunting prey species.

Decomposers help maintain the stability of an ecosystem by breaking down dead organisms and recycling nutrients.

• By breaking down dead organisms and recycling nutrients.

• By producing energy from sunlight.

• By hunting and eating other animals.

• By preventing plants from growing.