Macrozamia spiralis
... that the roots of the cycad Macrozamia spiralis contain cyanobacteria, which assist their host by fixing nitrogen?
... that the roots of the cycad <i id="mwIg"><b id="mwIw"><a href="./Macrozamia_spiralis" id="mwJA" rel="mw:WikiLink" title="Macrozamia spiralis">Macrozamia spiralis</a></b></i> contain <a href="./Cyanobacteria" id="mwJQ" rel="mw:WikiLink" title="Cyanobacteria">cyanobacteria</a>, which assist their <a href="./Host_(biology)" id="mwJg" rel="mw:WikiLink" title="Host (biology)">host</a> by <a href="./Nitrogen_fixation" id="mwJw" rel="mw:WikiLink" title="Nitrogen fixation">fixing nitrogen</a>?