Obj. 3- Energy in Ecosystems

Obj. 3- Energy in Ecosystems

By Katie Reche

Multiple Choice

About how much percent of energy is passed on from one organism to to the next on an energy pyramid?

• 100 percent of all energy gets passed
• 45 percent of all energy gets passed
• 10 percent of all energy gets passed
• 0 percent of all energy gets passed

Multiple Choice

Kendra is studying the energy pyramid shown.

Which statement is supported by the energy pyramid?

• The ecosystem can support fewer foxes than grasshoppers.

• Foxes require less energy than birds.

• The ecosystem can support more foxes than birds.

• Grasshoppers require more energy than birds.

Multiple Choice

The diagram shows an energy pyramid.

If the plankton contain 100,000 kcal of energy, about how much energy will the manta ray obtain from eating the starfish?

• 10 kcal

• 100 kcal

• 1,000 kcal

• 10,000 kcal

Multiple Choice

Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?

• Plants are not infinitely in the world

• Producers can only eat what is available

• Carnivores are too big to be eaten

• Energy is lost when you move up a trophic level

Multiple Choice

What would happen to this food chain if we doubled the population of the rabbits?

• The populations of the snakes and hawks would also increase.

• The populations of the grass, snakes, and hawks would decrease.

• The grass population would decrease. The snake and hawk population would increase.

• The grass and hawk population would decrease. The snake population would increase.

Multiple Choice

In the energy pyramid, what is the bottom level composed of?

• Producers

• First-Level Consumers

• Second-Level Consumers

• Third-Level Consumers

Multiple Choice

In the energy pyramid, what comes after the producers?

• Producers

• First-Level Consumers

• Second-Level Consumers

• Third-Level Consumers

Multiple Choice

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the carnivores in trophic level 3?

• 10 Kcal

• 1 Kcal

• 100 Kcal

• 1000 Kcal