Ecosystem and Food Chain Practice Test

When a lion eats food…

• the lion is only eating a few molecules

• all of the molecules are turned into energy or waste.

• the lion is eating billions and billions of molecules.

• all the molecules are used to make the lion grow.

__________ is at the beginning of almost every food chain.

• plants or algae

• microscopic organisms like bacteria

• small creatures like lady bugs

• large animals like giraffes

A food web shows

• thousands of relationships between organisms in an ecosystem.

• every possible relationship between organisms in an ecosystem.

• the relationship between living and nonliving things in an ecosystem.

• only some of the relationships between organisms in an ecosystem.

What do the arrows in a food chain represent?

• how food matter moves from one organism to another

• how organisms increase in numbers in an ecosystem

• how organisms move from one place to another

• where each organism lives in an ecosystem

An ecosystem includes

• only the living things in an area.

• only the non living things in an area.

• the living and nonliving things in an area.

A grasshopper is called __________ because it is a living thing.

• matter

• an organism

• energy

• an omnivore

Living things and nonliving things are made up of matter.

• True

• False

Organisms stop growing after they become adults.

• True

• False

Matter is made up of electricity.

• True

• False

Wood is made up of matter.

• True

• False