These stem cells come from fetal tissue. They are:

These stem cells come from fetal tissue. They are:

• A. Embryonic (pluripotent)
• B. Hematopoietic stem cells
• C. Cord blood stem cells
• D. Mesenchymal stem cells

Answer: (A)

Embryonic stem cells come from fetal tissue and are pluripotent. They originate from the inner cell mass of the blastocyst in early development, which gives them the ability to differentiate into almost any cell type from the three germ layers. That broad developmental potential is what defines them as pluripotent. The other options describe stem cells that are not from embryonic/fetal tissue and are typically multipotent: hematopoietic stem cells form blood cells; cord blood stem cells are usually hematopoietic; mesenchymal stem cells can differentiate into bone, cartilage, and fat but come from adult tissues like bone marrow or adipose tissue rather than the embryo.

Embryonic stem cells come from fetal tissue and are pluripotent. They originate from the inner cell mass of the blastocyst in early development, which gives them the ability to differentiate into almost any cell type from the three germ layers. That broad developmental potential is what defines them as pluripotent.

The other options describe stem cells that are not from embryonic/fetal tissue and are typically multipotent: hematopoietic stem cells form blood cells; cord blood stem cells are usually hematopoietic; mesenchymal stem cells can differentiate into bone, cartilage, and fat but come from adult tissues like bone marrow or adipose tissue rather than the embryo.