B3.2 Transport
Transport systems move materials through animal blood vessels, plant xylem and phloem, and heart-driven circuits using specialised structures and pressure gradients.
- Syllabus
- First assessment 2025
- Topic
- B3.2
- Level
- —
What you’ll learn
18 learning objectivesChoose one objective for a focused lesson, or study the complete topic.
Exam analysis
An aggregate view of how the complete B3.2 Transport appears across past papers.
Chance of appearing47%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper2
Most tested objectives
- B3.2.16 (HL)—Cardiac cycle stages28 questions
- B3.2.15 (HL)—Mammalian heart adaptations21 questions
- B3.2.18 (HL)—Phloem adaptations19 questions
Common question formats
- Definition or recall
- Process explanation
- Structured response
- Diagram interpretation
- Calculation
- Graph interpretation
- Experimental design
- Comparison
Exam question appearances
November 2025Paper2 ["SL"] · TZ37(c)[ 7 ]B3.2.7—Water transport in plants
November 2025Paper2 ["HL"] · TZ34(b)(i)[ 2 ]B3.2.17 (HL)—Root pressure generation
November 2025Paper1A ["HL"] · TZ325[ 1 ]B3.2.14 (HL)—Single vs. double circulation
November 2025Paper1A ["HL"] · TZ125[ 1 ]B3.2.18 (HL)—Phloem adaptations
November 2025Paper1A ["HL"] · TZ124[ 1 ]B3.2.9—Stem tissue distribution
Practice this topic
10 original exam-style questions based on the patterns above.
Coverage 2010–2025 · Updated 15 Jul 2026