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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.
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9.2.2 |
List ways in which mineral ions in the soil
move to the root.
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9.2.3 |
Explain the process of mineral ion
absorption from the soil into roots by
active transport.
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9.2.5 |
Define transpiration.
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9.2.6 |
Explain how water is carried by the
transpiration stream, including the
structure of xylem vessels, transpiration
pull, cohesion, adhesion and evaporation.
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9.2.7 |
State that guard cells can regulate
transpiration by opening and closing
stomata.
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9.2.8 |
State that the plant hormone abscisic acid
causes the closing of stomata.
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9.2.9 |
Explain how the abiotic factors light,
temperature, wind and humidity, affect the
rate of transpiration in a typical
terrestrial plant.
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9.2.10 |
Outline four adaptations of xerophytes that
help to reduce transpiration.
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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).
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2.4.6 |
Explain the role of protein pumps and ATP in
active transport across membranes. |
