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.
What causes spotting during ovulation? Yes, it is quite normal to have spotting at the time of ovulation, though not all women experience this. During the first half of the cycle, the hormone oestrogen is predominant. This causes the lining of the uterus to grow and become thickened, ready for implantation of the egg.