Verified answer

in adult human body, there are 1 trillion cells and of 200 kinds of cells,

they all developed from single cell embryo,

this is the classic example of cell differentiation.

designation of the particular function to particular cell is cell differentiation.

Explanation :

Definition:

The normal process by which a less specialized cell develops or matures to possess a more distinct form and function.

Supplement:

For example, a single-celled zygote develops into a multicellular embryo that further develops into a more complex multisystem of distinct cell types of a fetus. The cell size, shape, polarity, metabolism and responsiveness to signals change dramatically such that a less specialized cell becomes more specialized and acquires a more specific role.

Importance:

Connective tissues as a group are those having protective or supportive functions. All CT's have three elements: fibers, cells, and non-cellular matrix material. The proportions of the three vary widely in different CT's, and it's the proportions among them that give any given CT its characteristic properties.The term connective tissue proper is used for those examples in which the fibrous component is the predominant feature. It's the group which is most often spoken of as "connective tissue," although really it's only one of several subclassifications.

Special connective tissues are a heterogeneous group. They're found in specific places, they have specific functions, and they're not nearly as common as the "proper" CT in terms of distribution. This term is applied to reticular, mucous, elastic, and adipose connective tissue.

EXPLAIN THE IMPORTANCE OF CELL DIFFERENCIATION TO LIVING ORGANISMS