Question

what is meant by stem cell? what is the function of them?

Answer 1

STEM CELL:

A stem cell is a type of cell that can produce other cells which are able to develop into any kind of cell in the body.

Secondly its function,

under certain physiologic or experimental conditions, they can be induced to become tissue- or organ-specific cells with special functions. In some organs, such as the gut and bone marrow, stem cells regularly divide to repair and replace worn out or damaged tissues.