The Effect of Soil Organic Matter on the Amount of Water

question 24

True/False

The effect of soil organic matter on the amount of water available to plants is due to organic matter influence on total soil porosity as well as to the water-supplying power of the soil organic matter.

---

Definitions:

Content Validity

The extent to which a test measures all aspects of the concept or construct it intends to assess.

Construct Validity

The extent to which an assessment accurately measures what it is supposed to measure.

Criterion Validity

The extent to which a measure is related to an outcome. It assesses whether a test reflects a certain set of abilities by correlating test results with a criterion measure.

Face Validity

The extent to which a test appears to measure what it is supposed to measure at face value.