IP Combined Science Notes (Lower Sec, Year 1-2): 06) Transport Systems in Humans & Plants
In one line
Track nutrient and gas transport in humans and plants, including circulation, transpiration, and phloem flow calculations.
Last updated 30 Nov 2025
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- Start Here
- Learning targets
- 1 Human circulatory system
- 2 Blood components
Q: What does IP Combined Science Notes (Lower Sec, Year 1-2): 06) Transport Systems in Humans & Plants cover?
A: Track nutrient and gas transport in humans and plants, including circulation, transpiration, and phloem flow calculations.
Transport systems move substances efficiently over distances too large for diffusion alone. Understand structure-function relationships to explain oxygen delivery, sugar transport, and water movement.
These notes align with MOE's Lower Secondary Science syllabus themes commonly taught in IP Sec 1–2, and act as a bridge into upper-secondary Physics, Chemistry, and Biology.
Status: MOE Lower Secondary Science syllabus (current release) checked 2025-11-30 - scope unchanged; remains the reference for these combined science notes.
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Start Here
| Read time | What to take away |
| 1 second | Transport systems move substances too far for diffusion alone. |
| 10 seconds | In humans, track blood through heart, lungs, and body. In plants, separate xylem water transport from phloem sugar transport. |
| 100 seconds | Example: exercise raises heart rate and stroke volume, so cardiac output rises and more oxygen reaches working muscles each minute. |
Learning targets
- Describe the structure of the human circulatory system and pathway of blood flow.
- Use cardiac output formulas to solve numerical problems and compare fitness levels.
- Explain the roles of xylem and phloem, including adaptations for their functions.
- Analyse factors affecting transpiration rate and interpret potometer data.
1 Human circulatory system
Key components: heart (four chambers), blood vessels (arteries, veins, capillaries), and blood.
