Xylem · Botany

Tyloses are outgrowths of which cells that enter vessel lumens?

  1. Xylem fibers
  2. Tracheid cells
  3. Sieve tube members
  4. Xylem parenchyma
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Correct answer: Xylem parenchyma

Tyloses are balloon-like extensions of adjacent xylem parenchyma cells that push through pits into the vessels. They typically form in heartwood to block water flow and prevent decay.

Difficulty: Medium Question 17 of 20

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