LIFE SCIENCE

Detailed explanation-1: -histogenesis, series of organized, integrated processes by which cells of the primary germ layers of an embryo differentiate and assume the characteristics of the tissues into which they will develop.

Detailed explanation-2: -Morphogenesis is the process by which the individual cells within the developing embryo move around and organize themselves to form the structures, organs and systems that make up the adult organism. Morphogenesis is directed by two types of factors-chemical factors (molecules) and mechanical forces.

Detailed explanation-3: -What is the positioning and organization of cells during morphogenesis called? Pattern formation. During gastrulation, invagination leads to the formation of the primitive gut and the opening to the gut is called the. blastopore.