A & B horizon is called as:________?

A. Regolith
B. Poly-pedon
C. Series
D. the solum

Submitted by: Shafiq Rehman

The A & B horizon is called as: the solum.

A Horizon (Topsoil): Rich in humus and minerals, top layer.
B Horizon (Subsoil): Contains minerals and clay that have leached down from the A horizon (zone of accumulation).
Solum: Refers to the “true soil” (A + B) which is actively influenced by soil-forming processes.