umbrella alga
... that the thallus of the umbrella alga, which grows up to 7 centimetres (2.8 in) tall, consists of a single large cell?
... that the <a href="./Thallus" id="mwC-w" rel="mw:WikiLink" title="Thallus">thallus</a> of the <b id="mwC-0"><a class="mw-redirect" href="./Acetabularia_calyculus" id="mwC-4" rel="mw:WikiLink" title="Acetabularia calyculus">umbrella alga</a></b>, which grows up to <span about="#mwt47" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"7"},"2":{"wt":"cm"}},"i":0}}]}' id="mwC-8" typeof="mw:Transclusion">7 centimetres (2.8</span><span about="#mwt47" typeof="mw:Entity"> </span><span about="#mwt47">in)</span> tall, consists of a single large <a href="./Cell_(biology)" id="mwC_A" rel="mw:WikiLink" title="Cell (biology)">cell</a>?