被子植物的主要特征 Main features of angiospermae 具真正的花 formation of true flowers 具雌蕊 formation of pistil( gynoecium) 具双受精现象 double fertilization ●孢子体进一步发达和分化 development and diversification of sporophytes ●配子体进一步退化 reduction of gametophytes被子植物的主要特征 Main features of Angiospermae z 具真正的花 formation of true flowers formation of true flowers z 具雌蕊 formation of pistil ( formation of pistil (gynoecium gynoecium ) z 具双受精现象 double fertilization double fertilization z 孢子体进一步发达和分化 孢子体进一步发达和分化 development and development and diversification of diversification of sporophytes sporophytes z 配子体进一步退化 配子体进一步退化 reduction of gametophytes reduction of gametophytes