Question

Find out those without nucleus. Bacteria/amoeba/frog/mycoplasma/or mango tree

Answer 1

Bacteria are considered to be prokaryotes, which means they do not have a nucleus and other membrane-bound organelles. Instead, the DNA is found in the nuceloid, a region with no membrane, or as a plasmid, a small circle of extra genetic information, floating right in the cytoplasm, the fluid that fills the cell.
protozoans (like amoebas) are eukaryotes (ie have a true nucleus). Prokaryotes (like bacteria) do not have their genetic material contained in a nucleus.hence amoeba also has nucleus.
mycoplasma does not have nucleus
mango tree's cells have nucleus
hope this helps...