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CAIE IGCSE Biology 19.2.17 Transfer of Energy From One Trophic Questions

Practise calculating energy loss and explaining why only part of the energy at one trophic level reaches the next.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • calculate the percentage of energy transferred or lost between trophic levels from food-chain values
  • explain transfer losses through respiration, heat, movement, excretion, egestion or uneaten material
  • explain why higher trophic levels support less biomass or fewer organisms after energy losses

CAIE IGCSE Biology 19.2.17 Transfer of Energy From One Trophic Questions question 1

[Maximum number: 3]

A student recorded the information about an aquatic habitat.
Fig. 4.1 shows the student's notes.

Fig. 4.1

Fig. 4.1

Outline how the energy in the primary consumers in this aquatic food web is used to produce biomass in the secondary consumers.

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