9.1 - Transport in the Xylem (HL)
Assessment statements
| DCS Topic Code | Statement | Guidance |
| 9.1.U1 | Transpiration is the inevitable consequence of gas exchange in the leaf. | |
| 9.1.U2 | Plants transport water from the roots to the leaves to replace losses from transpiration. | |
| 9.1.U3 | The cohesive property of water and the structure of the xylem vessels allow transport under tension. | |
| 9.1.U4 | The adhesive property of water and evaporation generate tension forces in leaf cell walls. | |
| 9.1.U5 | Active uptake of mineral ions in the roots causes absorption of water by osmosis. | |
| 9.1.A1 | Adaptations of plants in deserts and in saline soils for water conservation. | |
| 9.1.A2 | Models of water transport in xylem using simple apparatus including blotting or filter paper, porous pots and capillary tubing. | |
| 9.1.S1 | Drawing the structure of primary xylem vessels in sections of stems based on microscope images. | |
| 9.1.S2 | Measurement of transpiration rates using potometers. (Practical 7) | |
| 9.1.S3 | Design of an experiment to test hypotheses about the effect of temperature or humidity on transpiration rates. |
Video Lesson 1 - Transpiration (9.1)
Homework
- Complete Kognity 9.1
Video Lesson 2 - Factors involved in transpiration (9.1)
Using your REAL NAME, complete this Zaption video while taking notes in your packet.
Homework
- Complete DBQs on pages 407 (below right) and 408 (below left)
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LECTURES AND PACKET
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