Science Chapter 4 Lesson 3 Quiz

What is the primary source of energy in an ecosystem?

• Plants

• Sun

• Animals

• Water

Which of these is NOT a producer in an ecosystem?

• Grass

• Trees

• Rabbit

• Algae

In an energy pyramid, which level has the most energy?

• Top

• Middle

• Bottom

• All levels have the same energy

Why does the energy pyramid get narrower at the top?

• There are fewer animals at the top

• Less energy moves up

• Top animals are smaller

• The sun's energy decreases

What do plants use to make their own food?

• Soil, water, and air

• Carbon dioxide, water, and sunlight

• Oxygen, sunlight, and soil

• Water, air, and rocks

In a forest food chain, what comes after plants?

• Sun

• Mountain lion

• Deer

• Decomposers

What is a predator?

• An animal that eats plants

• An animal that hunts other animals

• An animal that is hunted

• An animal that breaks down dead things

Which of these is an example of prey?

• Lion

• Eagle

• Rabbit

• Bear

What do decomposers do in an ecosystem?

• Make their own food

• Hunt other animals

• Break down dead things

• Produce oxygen

A food web is made up of many:

• Energy pyramids

• Food chains

• Predators

• Decomposers