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JAMB Biology 1984 Question 27

Question 27

Structure of Flowering Plants

Which of the following statements is NOT true of the piliferous layer of a root? It

  1. A.has a very thin cuticle
  2. B.is the outermost layer of the cortex
  3. C.may bear root hairs
  4. D.breaks down as the root ages.
  5. E.is replaced by cork in old roots.
Show the answer and explanation

Answer: B (is the outermost layer of the cortex)

Explanation

The piliferous layer is the epidermis of the root, which lies outside the cortex and is not part of it. It bears root hairs, has little or no cuticle and is replaced by cork as the root ages.