<prompt> Iron deficiency causes-Megaloblastic anemiaMicrocytic hypochromic anemiaMacrocytic hypochromic anemiaMicrocytic hyperchromic anemia  <response>: In Fe deficiency anemia the red cells become microcytic and hypochromic poikilocytosis become more marked . Ref:Postgraduate Hematology by Victor Hoffbrand pg39 Ref Robbins 9e pg422 