No, they don't have organs and organ system.
Cells form tissues, Tissues form organs, Organs forms organ system; Unicellular have their own one cell only. So, it can't possible that they have organs or organ system.
DNA carries instructions for making the proteins a cell needs.DNA molecules are found in chromosomes.Genes are segments of DNA that contain instructions that code for proteins.
hoped this helped
<span><span>A.
reproduce through spores</span>
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