Using a self-consistent field approach we analyze the equilibrium characteristics of macromolecules grafted at one end onto a planar surface and having an adsorbing group at the second end. Three different systems are considered : (1) isolated end-adsorbing Gaussian chain, (2) end-adsorbing chains admired into a polymer brush with nonadsorbing free ends, and (3) polymer brush formed by the end-adsorbing macromolecules. The dependences of the average height and dispersion of the adsorbing ends are calculated as functions of the adsorption energy and the chain length. The experimental results on relevant systems are discussed.