Vascular plants are plants that have a series of tubes running through their stem/trunk to their leaves. These tubes or veins are what a plant uses to transport nutrients through it. A plant with roots is also considered a vascular plant because it roots are tubes that carry water and nutrients. HINT: Vascular Plants usually produce seeds and have long stems/trunks. Some vascular plants go dormant in the Winter to prevent them from freezing up. There are some exceptions to this like evergreen plants.