food chain and pyramids

A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?

• A
• B
• C
• D

How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?

• 80%
• 90%
• 10%
• 20%

In this ecological pyramid which type of consumer gets only 10% of the energy stored in plants?

• Herbivore
• Carnivore
• Omnivore
• Secondary Consumer

The diagram represents different levels of a marine food pyramid. Between which two levels is the least amount of energy transferred

• R and Q
• S and R
• T and S
• U and T

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that do photosynthesis?

• A
• B
• C
• D

Which statement best describes what will happen if the population of herbivores in the community decreases?

• the population of foxes will increase

• the population of hawks will increase

• the population of rabbits will increase

• the population of meadow plants will increase

What does a pyramid of numbers compare?

• the number of individual organisms at each trophic level

• the number of individuals in each population

• the number of predators and prey in an ecosystem

• the number of different populations at each trophic level

The diagram represents different levels of a marine food pyramid. Between which two levels is the greatest amount of energy transferred

• R and Q
• S and R
• T and S
• U and T

For a pyramid of numbers, the width of the bar shows the__________ of organisms present in each trophic level at a particular time. 

• number
• biomass
• energy
• volume

The number of organisms _________ with each successive (higher) trophic level. 

• increases
• decreases