Energy and Matter in the Ecosystem

The _____ is the initial source of energy for most living things on Earth.

• sun

• food

• stomata

All organisms in an ecosystem depend on _____ to capture energy from the sun.

• consumers

• producers

Each time something eats something else, food energy and matter are transferred from one organism to the next organism.

• True

• False

_______ are consumers that eat dead organisms.

• decomposers

• scavengers

_____ use chemicals called enzymes to break down the remains of organisms and animal wastes.

• decomposers

• scavengers

Organisms often eat _________ .

• just one kind of food

• more than one kind of food

Losing just one component in an ecosystem DOES NOT affect the other components.

• true

• false

It takes_____ of producers to support a consumer at the top of a food chain.

• a lot

• a little

An ______ shows how much energy passes from one organism to another up a food chain.

• food chain

• food web

• energy pyramid

The transfer of energy and matter from one organism to the next in an ecosystem is called ______ .

• food chain

• food web

• energy pyramid