[" Monoecious plant of Chara shows occurrence of: "],[" (1) upper oogonium and lower antheridium on the "],[" same plant "],[" (2) antheridiophore and archegoniophore on the "],[" same plant "],[" (3) stamen and carpel on the same plant "],[" (4) upper antheridium and lower oogonium on the "],[" same plant "]