Cells - Celloedd, Tissues - Meinwe, Skeletal System - System Sgerbydol, Sensory Organs - Organau Synhwyrol , Grow  - Tyfu , Repair  - Atgyweirio , Reproduce - Atgynhyrchu, Cell Membrane  - Cellbilen, Nucleus  - Cnewyllyn, Genetic Material  - Deunydd Genynnol,

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