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WAEC Biology 2024 Question 11

Question 11

Support and Movement

The lumbar vertebra differs from the thoracic vertebra because it possesses a

  1. A.longer neural spine.
  2. B.wider neural canal.
  3. C.thicker centrum.
  4. D.shorter transverse process.
Show the answer and explanation

Answer: C (thicker centrum.)

Explanation

Lumbar vertebrae carry the most body weight, so they have large, thick centra. Thoracic vertebrae have the long neural spines.