Multiple choice

Which one of the following statements is correct?

  1. In the wood of dicots, ray tracheids are absent.

  2. In the wood of gymnosperms, ray parenchyma is absent.

  3. In most commercially important dicot woods, fibres are absent.

  4. In the wood of all gymnosperms, vessels are absent.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vessels are a characteristic feature of angiosperm wood and are completely absent in all gymnosperms (including all conifers). Ray tracheids (A false) are present in some dicots. Ray parenchyma (B false) is present in gymnosperms. Fibres (C false) are abundant and important in dicot woods.

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