CourseCourseConceptConceptDocumentDocument

IB Biology HL C4.2.16 Secondary Production Questions

Secondary production is biomass accumulation by heterotrophs. It depends on food intake, assimilation, respiration losses and biomass conversion. IB Biology HL C4.2.16 focuses on these relationships.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain secondary production as heterotroph biomass accumulation from food intake after respiration losses.
  • Use feed conversion ratios to compare animal feed intake with edible biomass output.

IB Biology HL C4.2.16 Secondary Production Questions question 1

[Maximum number: 2]

The diagram shows a simplified marine food web in an area of the North Pacific Ocean.

Figure for Question IB Biology HL C4.2.16 Secondary Production Questions question 1 — IB Biology HL

Explain reasons for the feed conversion ratio in fish being lower than in cattle.

All question bank results loaded