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.
Make sure they understand the following: 1  The outside layer of the seed is called the seed coat. It protects the delicate structures inside the seed. 2  Inside the seed, students should see two structures: the baby plant, or embryo, and the food supply. The embryo will grow into the mature plant.