What does platy soil structure look like?

• A. The units are flat and plate-like and oriented horizontally, thick in the middle
• B. A granular, crumb-like structure
• C. The units are spherical and well-drained
• D. The units are blocky and vertical

Answer: (A)

Platy soil structure is identified by flat, plate-like units that lie horizontally and are stacked in layers. The defining feature is this horizontal arrangement, giving the soil a layered, plate-like appearance when you break it apart. This contrasts with granular structure, which is made of small, crumb-like, rounded aggregates that break apart easily and promote good porosity. A description of spherical and well-drained would not match the flat, horizontal plates characteristic of platy structure, and blocky structures form cube-like blocks, often with more vertical organization.