Is a blue spruce tree a unicellular organism?

No, a blue spruce tree is not a unicellular organism; it is a multicellular organism. Blue spruce trees belong to the plant kingdom and are made up of numerous cells that work together to form tissues and organs. Unicellular organisms, like bacteria and some algae, consist of a single cell. Trees, including blue spruce, have complex structures that include roots, stems, and leaves.