Biology
Plant Anatomy
Quick fact
Plants have a 'circulatory system'—xylem and phloem—that moves water and food, similar to how our blood vessels work, but without a heart to pump it.
Why this is interesting
You see a towering oak tree or a delicate rose, but have you ever wondered what lies beneath the surface? How does water travel from roots to leaves, and what holds a plant upright without bones?