The Presence of High Concentrations of Salts in the Soil

question 40

Multiple Choice

The presence of high concentrations of salts in the soil poses a problem for plants because:

• A)if excluded by the root, they can make it harder for the root to extract water from the soil.
• B)if the salts are not filtered from the transpiration stream, they can damage the plant.
• C)salts can form insoluble compounds with organic forms of nitrogen that are then unavailable to the plant.
• D)if taken up by the shoot, salts make the plant more palatable to large herbivores.

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