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WAEC Biology 2018 Question 18

Question 18

Respiration

The structures for gaseous exchange in breathing roots are

  1. A.stomata.
  2. B.lenticels.
  3. C.cuticle.
  4. D.mitochondria.
Show the answer and explanation

Answer: B (lenticels.)

Explanation

Breathing roots, such as those of mangroves, stick up out of the mud. Air enters them through lenticels, small pores in their bark.