The given diagram shows soil profile where different soil layers are labelled as P, Q, R and S. Select the incorrect option regarding this.
AP is rich in humus.
BFew plant roots can reach Q.
CR is saturated with moisture and represents water table.
DS is a porous layer and consists of rock pieces with diameter less than 2 mm.
Option A "p" is rich in humus could also be correct. Check the solution.