Parent material is the original “rock” the soil horizons are built up on/come from.ResponsesTrueTrueFalse

Understanding the Concept

1. Definition of Parent Material: Parent material refers to the underlying geological material (bedrock or unconsolidated sediment) from which soil horizons form. It provides essential minerals and nutrients that influence the soil's characteristics.

2. Soil Horizons: Soil horizons are layers of soil that develop over time through processes like weathering, organic matter accumulation, and leaching. These horizons typically include the O (organic), A (topsoil), E (eluviation), B (subsoil), and C (parent material) layers.

Summary of the Statement

The statement "Parent material is the original ‘rock’ the soil horizons are built up on/come from" is accurate.

• The parent material indeed serves as the source of the minerals and nutrients needed for soil formation.
• Soil horizons evolve from this material through various processes.

Final Answer

True: Parent material is the original rock from which soil horizons are formed.