JAMB Biology 1993 Question 29

Question 29

Growth and Development

In H, the cotyledons are carried above the soil because

Diagram for this question
  1. A.the epicotyl grows faster than the hypocotyl
  2. B.the hypocotyl grows faster than the epicotyl
  3. C.both grow at the same rate
  4. D.the epicotyl outgrows the radicle.
Show the answer and explanation

Answer: B (the hypocotyl grows faster than the epicotyl)

Explanation

In epigeal germination (H) the hypocotyl lengthens quickly and lifts the cotyledons above the ground.