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Science Bowl Question

📅 NSB MS 2007🎓 MS🔄 Round 16#️⃣ Question 11❓ TOSS-UP📝 Multiple Choice

As a tree ages, which of the following BEST describes what happens to the secondary phloem:

W) it stops being produced
X) it accumulates in large quantities into the xylem
Y) it is crushed between each year’s xylem
Z) it is lost as part of the bark and does not accumulate in great quantities
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