IB ESS HL 4.3.1 Aquatic Primary Producers Questions
Explain the role of phytoplankton, algae and aquatic plants as primary producers.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Exam points
- identify algae, seaweed and seagrass as aquatic primary producers
- explain how aquatic producers capture energy and support food webs, biomass and renewable food production
- link producer abundance and productivity to aquatic ecosystem functioning and human food supply
IB ESS HL 4.3.1 Aquatic Primary Producers Questions question 1
Figure:Integrated aquaculture system
the integrated-aquaculture diagram shown above represents a system of aquaculture with four groups of harvestable species.
Identify one producer in the system illustrated in the integrated-aquaculture diagram shown above.
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