Chapter 21

Question 1

The proportion of ingested food that is assimilated by an organism.

Answer 1

Assimulation Efficiency

Question 2

A progressive increase in the concentration of a substance in an organism’s body over its lifetime.

Answer 2

Bioaccumulation

Question 3

The proportion of the biomass available at one trophic level that is ingested by consumers at the next trophic level.

Answer 3

Consumption Efficiency

Question 4

A diagram showing the connections between organisms and the food they consume.

Answer 4

Food web

Question 5

The proportion of assimilated food that is used to produce new consumer biomass.

Answer 5

Production Efficiency

Question 6

A measure of the transfer of energy between trophic levels, consisting of the amount of energy at one trophic level divided by the amount of energy at the trophic level immediately below it.

Answer 6

Trophic efficiency

Question 7

A common approach to conceptualizing trophic relationships in an ecosystem in which a stack of rectangles is constructed, each of which represents the amount of energy or biomass within one trophic level.

Answer 7

Trophic Pyramid