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.
A small amount of spotting during the first weeks of pregnancy may actually be what is known as implantation bleeding. This slight amount of discharge occurs as a result of the fertilized egg attaching itself to the lining of the womb. Embryo becomes a ball of cells, known as a blastocyst.