Plant Biology (Botany) quizzes
How water moves from roots to leaves, and the forces that let trees lift it without pumps.
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From Plant Biology (Botany): How Trees Lift Water Without Pumps
Most of the wood in a tree trunk is made of what?
- Stored grains of starch
- Living cells full of sap
- The walls of dead cells
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Answer: The walls of dead cells
Water-conducting xylem cells die at maturity, leaving hollow, lignin-reinforced tubes that build up year after year.
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