Cell biology
Molecular biology
Genetics
Ecology
Evolution and biodiversity
Human physiology
Nucleic acids (HL)
Metabolism, cell respiration and photosynthesis (HL)
Plant biology (HL)
Genetics and evolution (HL)
Animal physiology (HL)
Option A - Neurobiology and behaviour
Option B - Biotechnology and bioinformatics
Option C - Ecology and conservation
Option D - Human physiology
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What is transpiration in plants?
The process through which water is absorbed by plant roots, transported through the plant, and evaporated from the leaves.