Wood Formation · Botany

An annual ring in a woody stem consists of which two components?

  1. Sapwood and Heartwood
  2. Secondary phloem and Secondary xylem
  3. Cork and Phelloderm
  4. Spring wood and Autumn wood
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Correct answer: Spring wood and Autumn wood

An annual ring represents one year's growth and is comprised of a layer of early wood (spring wood) and a layer of late wood (autumn wood). The transition between the dense late wood of one year and the porous early wood of the next creates a visible boundary.

Difficulty: Medium Question 3 of 20

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