The germ layers develop early inembryonic life, through the process of gastrulation. During gastrulation, a hollow cluster of cells called a blastula reorganizes into two primary germ layers: an inner layer, called endoderm, and an outer layer, called ectoderm.
Answer:
They are divided on the basis of flowering and non-flowering plants I.e. Angiosperms and Gymnosperms
Explanation:
