Front

Using the artic food web shown, which group of organisms is not represented in the food web? Options: Decomposers, Herbivores, Consumers, Producers

Back

Decomposers

Front

An arctic food web is shown. Suppose that the lemming population is removed from the web. Which of the following would be a likely short-term effect of this change?

• The arctic fox population will increase.
• The polar bear population will increase.
• The caribou population will decrease.
• The snowy owl population will decrease.

Back

The snowy owl population will decrease.

Front

What explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?

Back

There is more energy in the producers because they provide energy for all the consumers in the ecosystem.

Front

Using the everglades energy pyramid provided, describe the transfer of energy in this pyramid. Energy is transferred from ________. Options: from the grass, to the marsh rabbits, back to the grass; from the Florida panther, to the gray fox, to the marsh rabbits; from the grass, to the marsh rabbits, to the gray fox, to the Florida panther; from the Florida panther, to the gray fox, to the marsh rabbits, to the grass.

Back

from the grass, to the marsh rabbits, to the gray fox, to the Florida panther

Front

Energy pyramids show the amount of energy in different trophic levels in an ecosystem. The diagram shows a simplified energy pyramid for the Florida Everglades. Which level contains the most energy? Options: Grass, Gray fox, Marsh rabbit, Florida panther

Back

Grass

Front

Which of the following food chains correctly represents the information in the passage? snails --> algae --> mice --> fox, fox --> ducks --> mice --> algae, grass --> snails --> mice --> fox, fox --> duck

Back

grass --> snails --> mice --> fox

Front

What organisms would be considered primary consumers? (Passage: Ducks and snails often eat grass and algae in freshwater ponds. The snails are eaten by mice and ducks. Foxes prefer to eat mice but will eat a duck if the opportunity arises.)

Back

snails and ducks

Front

In the food web provided, which organism is considered an omnivore? Options: Grasshopper, Frog, Mouse, Hawk

Back

Mouse

Front

Why is only a small amount of energy stored in food available to the next organism in a food chain?

Back

Most of the available energy is used by the organism or released as heat.

Front

A diagram of a food web is provided. Which organism receives the least amount of energy from the producers? Options: Hawk, Rabbit, Grasshopper, Mouse

Back

Hawk