Transport of substances in plants

In this topic

• Two opposite flows
• Vessels — the wood (xylem)
• Sieve tubes — the bast (phloem)
• What drives the flows?

Key terms

• Vessel
• Sieve tube
• Wood
• Bast
• Root pressure
• Transpiration
• Stoma
• Mineral salts
• Organic substances
• Girdling
• Root hair
• Leaf vein

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