Which type of cell division is called somatic cell division?

In which of the following does mitosis occur?

During mitosis,how many cells are formed from a single cell?

$A$ cell division in which a diploid somatic cell divides into two identical daughter cells is called

What is the main significance of mitosis?

Assertion : Old age is not an illness. It is a continuation of life with decreasing capacity for adaptation.
Reason : Cessation of mitosis is a normal genetically programmed event.