Multiple choice

In a typical monocot root, which of the following layers are formed by a single layer of compactly arranged, barrel-shaped parenchymatous cells?

  1. Epiblema

  2. Pericycle

  3. Cortex

  4. Vascular bundles

  5. Stele
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A Correct answer
Explanation

Epiblema is the outermost covering of the root formed by a single layer of compactly arranged, barrel-shaped, parenchyma cells. The cells are characteristically thin-walled since they are involved in absorption of water. A cuticle and stomata are absent. Some of the epiblema cells are produced into long unicellular projections called root hairs. Hence, the epiblema is also known as a piliferous layer.

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