Wood Formation · Botany

Wood produced by trees growing in tropical regions where the climate is uniform throughout the year usually lacks:

  1. Distinct vessel arrangement
  2. Defined xylem layers
  3. Distinct annual rings
  4. Heavily lignified fibers
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Correct answer: Distinct annual rings

Annual rings are formed due to seasonal climatic changes. In many tropical regions where the environment is consistent year-round, the cambium remains active at a steady rate, resulting in wood without clear annual boundaries.

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