Ecosystem Review

Which role do bobcats play in the forest food web shown?

• Bobcats break down dead plants and animals and return nutrients to the soil.

• Bobcats are consumers of marmots and grouses.

• Bobcats produce their own energy.

• Bobcats are predators of grasses and berries.

Answer explanation

Bobcats are consumers because they are getting energy (consuming or eating) from the marmots and grouses.

A wetlands food chain is shown.

Sun -> duckweed -> minnow -> crayfish -> racoon.

Which table shows the correct role of each organism?

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• 
• 
• 

Answer explanation

The duckweed is a producer because it is a plant that gets energy from the Sun. The minnow, crayfish, and racoon are all consumes because they get energy from eating other plant and/or animals.

Which type of organism is missing from this food web?

• Decomposer

• Predator

• Consumer

• Producer

Answer explanation

Decomposers break down dead plant and animals and return nutrients into the soil. Examples: earthworms, bacteria, mushroom (fungus)

How many types of organisms in this rain forest food web obtain energy directly from producers?

• One

• Two

• Three

• Four

Answer explanation

The producers are the flowers, fruits, and leaves because they make their own energy. The butterfly and spider monkeys are the only 2 consumers eating the produces listed .

What role do turkeys play in this forest food web shown?

• Decomposer

• Predator

• Consumer

• Producer

Answer explanation

The turkey has an coming from the seeds, leaves, and cones, which are all plants/producers. Therefore, they eat the producers making them a consumer.

Which table shows the correct role of organisms in the hedgerow food web shown?

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• 
• 

Answer explanation

Earthworms are getting energy from dead plants making them decomposes. Seeds are making their own energy (no arrows going to them) making them a producer. Foxes are getting energy from another animal making them a consumer.

In this swamp food web, energy is transferred directly between

• mosquitos and mudskippers

• kingfishers and mangrove crabs

• prawns and mosquito larvae

• kingfishers and mangrove trees

Answer explanation

Because there is an arrow going from the mudskipper to the mosquito.

Based on the information in the tundra food web, which of the following food chains shows on way energy flows in the ecosystem?

• Lichen -> Arctic hare -> muskox

• Arctic wolf -> muskox -> lichen

• Lichen -> lemming -> Arctic hare -> Arctic fox

• Lichen -> lemming -> ermine -> Arctic fox

Which statement correctly describes the transfer of energy in a food chain in this ecosystem?

• Energy is transferred from berries to bears to elk.

• Energy is transferred from grasses to marmots to bobcats.

• Energy is transferred from bobcats to grouses to grasses.

• Energy is transferred from grasses to elk to grouses.

Based on the information in the table, which of the following food chains shows one way energy flows in this ecosystem?

• Leaves -> caterpillars -> raccoons -> vultures

• Leaves -> slugs -> caterpillars

• Owls -> raccoons -> berries

• Leaves -> slugs -> owls

Answer explanation

REMINDER: The arrows show the flow of energy NOT what to what an organism eats!!!