Bone marrow cells that produce blood cells are best categorized as stem cells.

Bone marrow cells that produce blood cells are best categorized as Embryonic stem cells.

Explanation:

Embryonic stem cells have the ability to form any tissue in the body. The potential of these cells for the treatment of several serious diseases, such as cancer, diabetes, genetic diseases, spinal cord injuries, dementias, autoimmune diseases, among others, is being researched all over the world. An example of an embryonic stem cell can be seen in the question above, the cells in the bone marrow that produce blood cells.

Embryonic stem cells are extracted from the donor in the morula phase of the zygote. These are totipotent and have a great capacity to transform into other cell types, even to generate an individual completely. Although they have this important capacity, medical research with these types of cells is still in the testing phase. These cells were isolated for the first time in 1998 by Thomson and his collaborators and in 2006 a group of researchers managed to obtain from the skeletal muscle of a mouse.

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.