BFP- Flow of Energy 12C

Which statement would be true if the owl population disappeared?

• The mouse population would increase

• The carrot population would increase

• The fox population would decrease

• The rabbit population would decrease

Which of the following will most likely result if all of the primary consumers are removed from this ecosystem?

• Prairie rattlesnakes will become herbivores

• Golden eagle and kit fox populations will decrease

• Sagebrush grasshoppers will consumer soil bacteria

• Silk grass and sand sagebrush populations will decrease

An ocean food chain is shown in the diagram above. Which organism represents the trophic level containing approximately 10% of the initial amount of solar energy acquired by the phytoplankton?

• Copepods

• Sand eels

• Herring

• Humans

Which of the following statements best describes why there are fewer seals than shrimp in this pyramid?

• The shrimp are better at finding habitats and food than the seals.

• There is more energy available to the shrimp than the seals.

• Predators in the food web reduce the number of seals.

• The shrimp have many different food sources the seal has just one.

The amount of energy the producers in this energy pyramid provide the primary consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary consumers.

Based on this model, how much of the energy was provided to secondary consumers?

• 53,460 J

• 5,400 J

• 540 J

• 54 J

Part of a hydro-thermal vent food web is represented in the diagram.

Which organisms are both secondary and tertiary consumers in this food web?

• Chemosynthetic bacteria and amphipods

• Zooplankton and mussels

• Ratfish and octopuses

• Galatheid crabs and zoarcid fish

A marine ecosystem is represented below.

What is lost to the environment at each of the trophic levels of this ecosystem?

• Nutrients from the soil

• living space for the organisms

• food sources

• heat

A terrestrial food web is shown below.

Which of the following lists only organisms that are secondary consumers in this food web?

• Mice, rabbits, herbivorous insects, and squirrels

• Predaceous insects, toads, spiders, and foxes

• Spiders, foxes, owls, hawks, and snakes

• Insectivorous birds, seed-eating birds, owls, and hawks

A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. How should the organism be represented in the food web?

• The organism must have an arrow pointing from it to a tertiary consumer and another arrow pointing from it to a decomposer

• The organism must have an arrow pointing from it to a secondary consumer and another arrow pointing to it from the top predator

• The organism must have an arrow pointing to it from a producer and another arrow pointing to it from a primary consumer

• The organism must have an arrow pointing from it to a primary consumer and another arrow pointing away from it to a decomposer

Which of these organisms are in a trophic level that receives a larger percentage of the energy captured by the producers than the percentage received at the bats’ trophic level?

• Moutain lions

• Snakes

• Hawks

• Ground squirrels