Significance of Cell Cycle can be summarized as follows.
1. In multicellular organisms, the "Cycling Type" of cells (dividing cells) help in reproduction, growth, and replacement of dead cells , healing of wounds, etc.
2. The interphase allows time for synthesis and growth of dividing cells.
3. Properly controlled and regulated cell cycle results in normal and proportionate growth of organisms.
4. Loss of control over the cell cycle can lead to cancerous growth.