documentclass[tikz]{standalone}

usetikzlibrary{graphdrawing}
usegdlibrary{trees}

begin{document}
begin{tikzpicture}[tree layout,nodes={text depth=0.3ex}]
  node {aligned?}
    child {%
      node {yes}
    }
    child {%
      node {no}
    };
end{tikzpicture}
end{document}