The Parts of a Soybean Seedling (Glycine max, Dicotyledon)

Dicotyledon: Dicotyledon embryos usually have two cotyledons (or 'seed leaves') that store food enabling the plants to start to grow. Dicots usually have broad leaves with netted veins, and flower parts in multiples of four or five. 
Root system: The part of a plant that is usually below ground, anchors the plant, and absorbs water and minerals. 
Cotyledon: 'Seed leaf,' usually stores food in dicotyledons and absorbs food in monocotyledons. 
Axillary buds: Buds located where a leaf joins a stem. 
Petiole: The stalk of a leaf. 
Compound leaf: A leaf divided into several distinct leaflets. 
Leaflet: One of the parts of a compound leaf. Leaflets do NOT have axillary buds.