â¦longevity of seeds, the dormant embryo plant contained within the seed will lose its viability (ability to grow) if germination fails to occur within a certain time. Reports of the sprouting of wheat taken from Egyptian tombs are unfounded, but some seeds do retain their viability a long time.
Implantation bleeding-Spotting during pregnancy may be caused by implantation. Implantation bleeding occurs after the egg burrows into the lining of the uterus. As the egg implants into the lining sometimes a little bit of bleeding will occur.
Some of the most common causes of spotting (aside from implantation) include: 1  Ovulation: Many women experience spotting in the middle of their cycles during ovulation. 2  When the follicle ruptures and releases the egg, bleeding might occur.