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Question 87

Which description of mature xylem vessel elements explains how they form an unobstructed water-conducting tube?

  1. Living cells packed with cytoplasm
  2. Guard cells surrounding separate pores
  3. Sieve cells filled by solid end walls
  4. Dead hollow cells joined as tubesCorrect answer

Explanation

Mature vessel elements are dead and hollow, so joined elements provide a tube without living contents blocking its centre. Living cells packed with cytoplasm would obstruct the continuous internal route needed for water flow.

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Question 87: Which description of mature xylem vessel elements explains… · Cells and Microscopy · Questena