All cells MUST have a nucleus.
on animal cells and plant cells
Cell wall Chloroplasts
stomata or chlorophyl cell.
Cells are not part of cells, your question makes no sense.
A mass of cells that form a particular animal part
Blood has red cells and white cells, but I'm not sure what is meant by 'solid part'.
The bone marrow is the part of the bone that produces blood cells. It contains stem cells that can develop into red blood cells, white blood cells, and platelets.
mitochondria
In the palisade cells, spongy cells, and guard cells.
Leaves are part of plants and plants have cells so leaves also have cells.
Collenchyma cells
No. They are part of what we call blood.