Read Plant Responses to Salinity
A short NSEB read on plant responses to salinity, followed by the linked original question(s).
Living-system questions are solved by matching a structure or organism to its function, process and stated condition.
Core idea
Salinity lowers the water potential around roots and can cause ion toxicity. Plants limit damage by excluding or compartmentalising excess Na⁺ and accumulating compatible osmolytes such as proline or glycine betaine. These osmoprotectants stabilise proteins and membranes without disrupting normal metabolism; simply increasing sodium uptake is not a tolerance strategy.
Osmoprotectants stabilise macromolecules
Compatible osmolytes such as proline and glycine betaine protect proteins and membranes and help maintain water balance under salt stress.
OlympIQ exam lens
- ✓Salinity lowers the water potential around roots and can cause ion toxicity.
Identify the biological mechanism first, then check that the option states it accurately and answers the exact question.
Ready to try the pattern?
100% coverage across the linked question.
Practise the linked question