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WAEC Biology 2011 Question 29

Question 29

Transport in Plants

The removal of all the phloem tissues of the stem of a plant close to the root system for a long period of time is likely to

  1. A.provide more energy to the roots.
  2. B.accumulate more starch in the roots
  3. C.cause the underground roots to develop buds
  4. D.cause the plant to wither and die.
Show the answer and explanation

Answer: D (cause the plant to wither and die.)

Explanation

Without phloem, food made in the leaves cannot reach the roots; the roots starve and die, and then the whole plant dies.