What Are 'Dry Beans'?

Per the U.S. FDA food pyramid-

http://www.nalusda.gov/fnic/Fpyr/pyramid.gif

You are supposed to eat 2-3 servings per day from the food group labeled ‘Meat, Poultry, Fish, Dry Beans, Eggs & Nuts’ group.

What do they mean when they say ‘dry beans’? Are these somehow different from cooked beans??

What are you supposed to do, eat them straight out of the bag?

Thanks.

It probably refers to (rehydrated and cooked) dried pulses, such as haricot beans, chickpeas, kidney beans, lentils etc, as opposed to green beans, where the whole pod is eaten (often before the seeds fully develop) and something like broad(fava) or flageolet beans which may be eaten as ‘beans’, not pods, but at an unripe stage, where the seeds are not fully packed with carbs/protein.

It just means you measure the beans from the “dry”, rather than the cooked, state to determine serving size.

http://www.health.gov/dietaryguidelines/dga2000/document/build.htm