Poor immunity of old people is because of the absence of which gland

  1. Pineal gland
  2. Thymus
  3. Thyroid gland
  4. Parathyroid gland

Audio Explanation:


Refer NCERT, Heading 22.2.6 Para 1 page 335

Difficulty Level:

  • 4%
  • 90%
  • 6%
  • 2%