Wood Anatomy: Sapwood and Heartwood · NCERT Biology

In a mature woody stem, sapwood is best described as:

  1. The central, non-functional dead xylem region
  2. The outer, lighter-colored functional xylem
  3. The region where the vascular cambium is active
  4. The outermost bark layer of the mature stem
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Correct answer: The outer, lighter-colored functional xylem

Sapwood is the outer region of secondary xylem that actively conducts water and minerals. It appears lighter in color compared to heartwood.

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