The concept of Developmental Biology is the science that looks at how different processes work together to make an organism’s different shapes, sizes, and structures as it grows from an embryo to an adult or, more generally, throughout its life cycle. The field is a shining example of modern experimental biology since it investigates phenomena that have baffled scientists and thinkers for over two thousand years. Biologists and philosophers of biology have taken an interest in developmental biology because of the potential importance of this field to our understanding of evolution, the theme of reductionism in the genetic explanations and the increased focus on the finer points of specific research programmes like stem cell biology. Developmental biology has a wide range of material and conceptual practices that can be analysed to learn more about the scientific reasoning used in experimental life-science. This book deals with the various aspects of the Concept of Developmental Biology such as embryonic differentiation, and the epigenetic landscape including the early embryonic development in the field of cleavage, blastulation and gastrulation. Further book discusses the topics of organogenesis with its different aspects, the evolution of plants and fungi with an understanding of angiosperms and gametogenesis & fertilization types, process and mechanisms.