According to the Post Cereal website, the name is believed to come from the "grape sugar" that formed while baking, and the "nutty" flavor that they had. See related link.
it's possible to grow grapevines from seeds but most growers start with cuttings, that provides more assurance of the quality of the plant . But it really depends if it is a seedless grape or...
After the flower is pollinated, the fruit grows. If the fruit has seeds, then a plant may result. Most grapes for wine have a root of one type of plant and then the other is grafted onto it.
The Oregon-grape is an evergreen shrub related to the barberry. It is not closely related to grapes, but gets its name from the purple clusters fo berries whose color and slighly dusted appearance is...