Feeding relationships

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Question 28
Medium

The table below shows information about how energy is transferred in a bird (goose) and a fish (trout).

AnimalPercentage of energy in food absorbedPercentage of absorbed energy released by respirationPercentage of absorbed energy assimilated into biomass
Goose (bird)35.0%93.0%7.0%
Trout (fish)82.0%38.0%62.0%
a.

Suggest why the goose absorbs a lower percentage of energy from the food it eats than the trout.

[2]
b.

Suggest why the goose releases a much higher percentage of the absorbed energy by respiration than the trout.

[1]
c.

The data suggests that trout production is highly energy-efficient compared to farming geese. Using your knowledge of energy transfer, suggest two ways in which the productivity of geese could be improved by a farmer, explaining the biological reason for each.

[4]

Feeding relationships Questions

  1. IGCSE
  2. /Biology
  3. /Feeding relationships