Seed source is a term used to describe the origin of a seed. SESAME, OVULE, and CARAWAY are all examples of seed sources. SESAME is a small, flat, oval-shaped seed that is commonly used in cooking and baking. OVULE is a small, egg-shaped structure found in the ovary of a flowering plant that contains the female reproductive cells. CARAWAY is a biennial herb with small, brownish-black seeds that are used as a spice in many dishes.