**The preview file is a pdf version of all the slides for you to review before purchasing the real thing
This powerpoint presentation covers Topic 9.2 in the IB Biology curriculum. Specifically, it covers the details of transport of water and sugars within a plant (see learning objectives below).
Each slide is labelled with the specific learning objective and animation/video links are provided in the slide notes. The slides are formatted to print well for handouts or revision and I can provide a pdf version upon request.
As always, please let me know if you have any suggestions for improvements. These are always a work in progress!
**IB Biology Learning Objectives:
9.2.1 - Outline how the root system provides a large surface area for mineral ion and water uptake by means of branching and root hairs.
9.2.2 - List ways in which mineral ions in the soil move to the root.
9.2.3 - Explain the process of mineral ion absorption from the soil into roots by active transport.
9.2.4 - State that terrestrial plants support themselves by means of thickened cellulose, cell turgor and lignified xylem.
9.2.5 - Define transpiration.
9.2.6 - Explain how water is carried by the transpiration stream, including the structure of xylem vessels, transpiration pull, cohesion, adhesion and evaporation.
9.2.7 - State that guard cells can regulate transpiration by opening and closing stomata.
9.2.8 - State that the plant hormone abscisic acid causes the closing of stomata.
9.2.9 - Explain how the abiotic factors light, temperature, wind and humidity, affect the rate of transpiration in a typical terrestrial plant.
9.2.10 - Outline four adaptations of xerophytes that help to reduce transpiration.
9.2.11 - Outline the role of phloem in active translocation of sugars (sucrose) and amino acids from source (photosynthetic tissue and storage organs) to sink (fruits, seeds, roots).