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IB Biology HL D4.2.10 Plastic Pollution of Oceans Questions

Analyse ocean plastic persistence, movement, ingestion, entanglement and fragmentation into toxic microplastics.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain how marine macroplastic ingestion and entanglement harm birds and other organisms through starvation, organ damage, choking or movement impairment.
  • Analyse how ocean currents and mobile plastic rafts distribute persistent macroplastics and host introduced communities.
  • Explain how fragmentation into microplastics enables toxin uptake, bioaccumulation and food-web impacts without treating biomagnification as a separate objective.

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Study D4.2.10—Plastic pollution of oceans conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL D4.2.10 Plastic Pollution of Oceans Questions question 1

[Maximum number: 2]

Aedes japonicus and Aedes albopictus are invasive mosquito species that have recently become established in Western Europe. A. japonicus is more suited to the cooler regions in central Europe, while A. albopictus is adapted to warmer temperatures of the Mediterranean regions.

A. japonicus

A. japonicus

A. albopictus

A. albopictus

Outline the environmental concerns surrounding marine macroplastic pollution.

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