Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts.
Virus are made of Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA).
Fungi have no chlorophyll. Some of the fungi are unicellular i.e. yeast and some are multicellular.
Fungi reproduce by fragmentation, budding, fission and sporulation.