Instead, it stated that the decision to get routine screening mammograms before age 50 should be an individual one and take patient context into account, including the patient's values regarding specific benefits and harms..
The seed coat helps protect the embryo from mechanical injury, predators and drying out. Depending on its development, the seed coat is either bitegmic or unitegmic. Bitegmic seeds form a testa from the outer integument and a tegmen from the inner integument while unitegmic seeds have only one integument.
Upon being placed into the soil, the seed begins to absorb or imbibe water and as a result, starts to swell. When enough water (approximately 50% of the seedâs weight) is taken in and with favorable temperatures, the radicle breaks through the seed coat (Figure 1) and rapidly develops into the primary seedling root.