Kani waa maqaal ku saabsan koox ka mid ah noolaha.. Brotist (; ; loogu dhawaaqo: /oʊtɨst/) (magaca Saynis paraphyletic) waa koox balaadhan oo noole ka tirsan silsilada boqortooyooyinka nolosha. Brotist waa noole yar (ili-maqabatay ah) leh hal unug, kaasi oon lahayn waslad (ama xubno is-heystaa ama iskuxidhan). Wakhtiyadii hore waxaa kooxdan lagu dari jiray dhinaca boqortooyada Brotistai, laakiin xadaarada iyo Sayniska cusub ee maanta waxaa loo aqoonsaday in Brotista ka tirsan tahay lafdhabar la'leyda (noolaha aan lahay lafdhabarka). An equivalent term Protoctista is used for these organisms by various organisations and institutions. In kastoo kala qeybinta kooxaha boqortooyada ee biyoloji lagu kala duwan yahay, wadanka Maraykanka iyo Kanada waxay qeybahaasi ka dhigaan ilaa lix kooxood (Xayawaan, Dhir, Fungi, Brotista, Arjaeya, Bakteriya); halka wadanada ay ka mid yihiin Ingiriiska, Hindiya, Australia, Latin Amerika, meelo badan oo Afrika ah iyo wadano kale waxay aqoonsadeen kaliya shan koox oo ka tirsan boqortooyada, kuwaasi oo kala ah: Xayawaanka, Dhirta, Fungiga, Brotistaha iyo Bakteriyada.