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.
1 As the body's hormone levels increase during ovulation it can also cause spotting. 2  This is typically a sign that a woman is very fertile and nothing to be concerned about. 3  Pregnancy-If an egg becomes fertilized it will imbed itself in the lining of the uterine lining around 1-2 weeks later.