Introduction to Food Chains and Ecosystems

A group of students survey a local forest and obtain the approximate total number of red maple trees. What does this represent?

• A species

• A population

• A community

• A biotic factor

Which of the following is an abiotic factor?

• A red squirrel

• A fallen oak branch

• A pile of leaves

• A stream

Tags

NGSS.MS-LS2-3

All the populations in a ecosystem are called the ____________?

• species

• ecosystem

• community

• biotic factors

The original source of energy for this pond area is the

• Fish

• Sun

• Water

• Duck

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Organisms are classified as producers if they are able to

• remove oxygen from the air

• remove microbes from the soil

• make their own food

• make carbon dioxide

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

All of the plants and animals living in the same area make up a

• population

• community

• species

• habitiat

What do the arrows in the diagram represent?

• flow of energy

• life cycle stages

• one community replacing another

• renewable resource depletion

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A black bear will eat small mammals, fish, berries, and nuts. They would be classified as . . .

• Carnivores

• Herbivores

• Primary Comsumer

• Omnivores

Tags

NGSS.MS-LS2-3

Mushrooms help to recycle nutrients back into an ecosystem. They are classified as . . .

• Producers

• Decomposers

• Secondary Consumers

• Scavengers

Tags

NGSS.MS-LS2-3

Only a few birds can live in one tree because there is only so much space. This is a(n) . . .

• Population

• Resource

• Limiting Factor

• abiotic factor

Tags

NGSS.MS-LS2-1