Hyffa
| Mae yna wybodaeth gwerthfawr yn yr erthygl hon – diolch am eich cyfraniad! Ond i gyrraedd safon arferol, derbyniol Wicipedia, gellir mynd yr ail gam. Os na chaiff yr erthygl ei gwella'n ddigonol ymhen wythnos neu ddwy wedi 26 Awst 2026, fe all gael ei dileu. Os caiff yr erthygl ei gwella'n sylweddol, wedyn mae croeso i chi dynnu'r neges hon oddi ar y dudalen. Ceir rhestr o erthyglau sydd angen eu gwella yma. Sut mae ei gwella? Dyma restr o hanfodion pob erthygl; beth am dreulio ychydig o amser yn mynd drwyddynt? Gweler hefyd ein canllawiau Arddull ac Amlygrwydd. |
Uned dwf sylfaenol y rhan fwyaf o ffyngau ydy hyffa. Gellir ei ystyried fel cyfres o gelloedd wedi’u cysylltu â’i gilydd mewn ffilament. Gall y “celloedd” hyn gael eu gwahanu gan groesfur a elwir yn septwm, sy’n caniatau llif maetholion ond sy’n cyfyngu organynnau i’r celloedd lle cawsant eu cynhyrchu.
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