In scientific experiments, an experimental group can be described as a group which is under study. In this group, an independent and dependent variable is present. An independent variable can be described as the factor which changes either naturally or which is being changed by the researcher. A dependent variable can be described as the variable which is under study and it might be dependent on the independent variable.
The middle primary germ layer is called MESODERM, which gives rise to a gelatinous material called MESENCHYME, which then gives rise to different types of connective tissue such as bone, cartilage, and blood.
