Energy and Living Systems

This diagram shows how energy flows through an eco-system. What is the first source of energy in this pyramid (producers/autotrophs)?

• sharks and large birds

• algae, plankton and seagrass

• herbivorous fish, crustaceans and sea urchins

• seals and carnivorous fish

Which water boatmen is an aquatic bug. It can also be referred to as a(n) _____________

• producer

• apex predator

• carnivore

• Herbivore

Which organism from the food web is a producer/autotroph?

• Ants

• Badgers

• Beetles

• Lupines

Which organism from the food web is an omnivore?

• Prairie Chickens

• Upland Sandpipers

• Badgers

• Ground Squirrels

Which producers/autotrophs provide energy to the most consumers/heterotrophs?

• Grasses

• Grasshoppers

• Lupines

• Beetles

Which of the following is the best example of a food chain from the food web above?

• Grass --> Grasshoppers --> Prairie Chickens --> Badgers

• Lupines --> Grasshoppers --> Grasses

• Grasses --> Grasshoppers --> Beetles --> Ants

• Lupines --> Karner blue butterflies --> Ants --> Prairie Chickens

Which of the following would most likely occur if a disease killed most of the Prairie Chickens?

• Grass population will decrease due to an increase in beetles and grasshoppers

• there would be a decrease in beetles and grasshoppers

• the upland sandpipers would increase because its main predator has gone away

• the food web would remain the same

Which level of the energy pyramid has the least amount of energy?

• Top

• Bottom

What would most likely happen after wolves (who eat coyote) were added to this ecosystem?

• The cottontail population would go down so the green plants would increase

• The cottontail rabbit population may go up causing green plants to decrease

• the coyote population would go up because there would be more insects to eat.

If humans set out deer traps to decrease the white-tailed deer population, what would most likely happen to the producers?

• they would go up

• they would go down

• they would remain the same