It has a shoot with a couple of whitish little leaves and a short fat root. Corn, wheat and other grains are monocots, sending up the familiar grasslike spear of green at germination. The seed's embryo is usually quite small, with most of the volume taken up by stored food reserves. A seed may have 1 or 2 cotyledons and may or may not have an endosperm. Beans have 2 cotyledons and no endosperm.
Endosperm varies between species.
The tasty endosperm is often what we're after when we raise crops like buckwheat, corn, wheat or rye. And it's also often what birds and other wildlife are seeking from our winter feeders. The first leaves are present in the embryonic state, but are so small they are usually unnoticeable. As the seedling forces its way out of the ground, its stem bends so that the end of the stem is pulled, rather than pushed, through the ground to prevent damage. By the time the first true leaves develop, the root structure is in place, and the new plant has the ability to produce its own food.