Cells that live as a connected group but do not depend on each other for survival are called colonial organisms.
A collection of cells that function together makes up a tissue. A collection of tissues that function together makes an organ.
Tissue
A collection of single celled organisms. Or I suppose a newly fertilized egg and sperm would make many identical cells initially. Humans can't be made up uniformly of identical cells.
colonial organism
No they don't
A collection of similar cells is called a tissue. Tissues are groups of cells that work together to perform specific functions in the body.
A clonal colony is a collection of genetically identical cells that are permanently associated but where little or no integration of cell activities occurs. Each cell within the colony retains its own functions and activities, resulting in a group of cells that are physically connected but function independently.
Tissue, organ or system. Depends on what you mean by "a collection" of cells.
they are identical
Identical twins.
genos
Mitosis results in two identical daughter cells that are genetically identical to the parent cell. So one parent cell can produce two identical daughter cells after mitosis.