osis ▁and ▁passed ▁on ▁throughout ▁the ▁my cel ium ▁complex . ▁This ▁facil it ates ▁the ▁passage ▁of ▁such ▁materials ▁throughout ▁the ▁organ ism ▁and ▁allows ▁for ▁growth ▁and , ▁if ▁necessary , ▁repair . ▁ ▁Cond itions ▁ ▁In ▁order ▁for ▁a ▁sap rot roph ic ▁organ ism ▁to ▁facil itate ▁optimal ▁growth ▁and ▁repair , ▁fav ou rable ▁conditions ▁and ▁nut ri ents ▁must ▁be ▁present . ▁Opt imal ▁conditions ▁refers ▁to ▁several ▁conditions ▁which ▁optim ise ▁the ▁growth ▁of ▁sap rot roph ic ▁organ isms , ▁such ▁as ; ▁▁ ▁Pres ence ▁of ▁water : ▁ 8 0 – 9 0 % ▁of ▁the ▁fung i ▁is ▁composed ▁of ▁water ▁by ▁mass , ▁and ▁requires ▁excess ▁water ▁for ▁absor ption ▁due ▁to ▁the ▁ev ap oration ▁of ▁internally ▁ret ent ▁water . ▁ ▁Pres ence ▁of ▁o xygen : ▁Very ▁few ▁sap rot roph ic ▁organ isms ▁can ▁end ure ▁an a er ob ic ▁conditions ▁as ▁ev iden ced ▁by ▁their ▁growth ▁above ▁media ▁such ▁as ▁water ▁or ▁soil . ▁ ▁Ne ut ral - ac id ic ▁p H : ▁The ▁condition ▁of ▁neutral ▁or ▁m ild ly ▁acid ic ▁conditions ▁under ▁p H ▁ 7 ▁are ▁required . ▁▁ ▁Low - medium ▁temperature : ▁The ▁majority ▁of ▁sap rot roph ic ▁organ isms ▁require ▁temper atures ▁between ▁ 1   ° C ▁and ▁ 3 5   ° C , ▁with ▁optim um ▁growth ▁occurr ing ▁at ▁ 2 5   ° C . ▁ ▁The ▁majority