I had asked a ques.on 12th Feb. as to why cell is called fund. & struct. unit of life?

The existence of an organism depends on the activities and interactions of its constituent cells. Working through the tissues, the cells build up the body and carry on its different activities. They are recognized on this account as the units of structure and of function, and are the "individuals" in the body organization. Among the most important and interesting of the activities of the cells are those by which they build up the body, or cause it to grow.