Multiple choice

Which of the following is found in the bark of a tree?

  1. Cork and secondary cortex

  2. Only dead cork

  3. All tissues outside cork cambium

  4. All tissues outside vascular cambium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bark consists of all tissues outside the vascular cambium, including secondary phloem, cork cambium (phellogen), and cork (phellem). The vascular cambium produces secondary xylem (wood) internally and secondary phloem externally. Option D is the most complete answer.

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