CourseCourseConceptConceptDocumentDocument

IB Biology SL B4.1.5 Coral Reef Formation Conditions Questions

Understand how environmental conditions support reef-building corals and Zooxanthellae, and practise interpreting coral-cover evidence in IB Biology SL B4.1.5.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify abiotic limits on Zooxanthellae that affect coral-reef formation.
  • Compare coral cover and sea-surface temperature anomalies across two study periods.
  • Explain how bleaching breaks coral–algae mutualism and can lead to coral death.

IB Biology SL B4.1.5 Coral Reef Formation Conditions Questions question 1

[Maximum number: 1]

Reef-building corals are an association between two organisms: coral polyps and Zooxanthellae.

Figure for Question IB Biology SL B4.1.5 Coral Reef Formation Conditions Questions question 1 — IB Biology SL

State one limiting factor on Zooxanthellae which affects coral reef formation.

All question bank results loaded