First of all we need to understand what are shared derived characteristics or synapomorphies. These are the characters which were evolved in the ancestors of special groups of organisms and after that they were transferred to the descendants (or lineages) of those groups as well.
These characters are very important in the grouping or organisms. Now coming towards the question, we see there is a cross between Fungi and Plantae.
<u>The shared derived character that can be written here will be multicellular and eukaryotes</u><u>. </u>
These are the characters which were evolved in both fungi and protists from their immediate ancestors and are transfrred to their further lineages as well.