CourseCourseConceptConceptDocumentDocument

CAIE IGCSE Biology 19.2.18 Explain in Terms of Energy Loss Why Questions

Practise explaining why energy loss at each transfer means food chains usually contain fewer than five trophic levels.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • explain transfer inefficiency using losses to respiration, heat, movement, waste or uneaten material
  • link cumulative energy losses to too little energy to support a fifth trophic level

CAIE IGCSE Biology 19.2.18 Explain in Terms of Energy Loss Why Questions question 1

[Maximum number: 3]

Fig. 6.2 shows the pyramid of energy for a food chain in an ocean ecosystem.

Fig. 6.2

Fig. 6.2

Explain why pyramids of energy usually have fewer than five trophic levels.

All question bank results loaded