Which soil property is described as based on the physical characteristics of the soil and is broken into horizons, containing information about the parent material?

Which soil property is described as based on the physical characteristics of the soil and is broken into horizons, containing information about the parent material?

• A. Soil color
• B. Soil texture
• C. Soil profile
• D. Soil structure

Answer: (C)

Think of the soil profile as the vertical record of a soil’s history. It describes the layered arrangement of horizons—O, A, E, B, C (and sometimes R)—each with distinct physical characteristics, and it explicitly contains information about the parent material the soil formed from. That combination of a layered, horizon-by-horizon description and the connection to the original material is why the soil profile best fits the description. Other terms describe individual properties: color, texture, or how the soil aggregates, but none capture the full vertical sequence and the parent-material context that the profile provides. Understanding the profile helps you anticipate drainage, rooting depth, and nutrient movement, because the depth and nature of each horizon reveal how the soil developed and how deep roots can go into different layers.

Think of the soil profile as the vertical record of a soil’s history. It describes the layered arrangement of horizons—O, A, E, B, C (and sometimes R)—each with distinct physical characteristics, and it explicitly contains information about the parent material the soil formed from. That combination of a layered, horizon-by-horizon description and the connection to the original material is why the soil profile best fits the description. Other terms describe individual properties: color, texture, or how the soil aggregates, but none capture the full vertical sequence and the parent-material context that the profile provides. Understanding the profile helps you anticipate drainage, rooting depth, and nutrient movement, because the depth and nature of each horizon reveal how the soil developed and how deep roots can go into different layers.