Final answer:
Rice grains are small, oval-shaped, and usually white or brown in color. They are the edible part of the rice plant and serve as a staple food in many cultures.
Step-by-step explanation:
Rice grains are the edible part of the rice plant. They are small, oval-shaped, and usually white or brown in color. The grains have an outer husk, bran layer, and endosperm, which is the starchy part that provides nutrition. Rice grains are the staple food for many cultures, especially in Asia.