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NEET 2019 · BiologyPrevious Year Question

Colostrum the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the new born infants because it contains : (NEET 2019)

Answer: (D) Immunoglobulin A. Answer: (D) Immunoglobulin A Solution: NCERT states that colostrum, the milk produced during the initial few days of lactation, contains several antibodies absolutely essential to develop resistance in the new-born.

  1. A.Natural killer cells
  2. B.Monocytes
  3. C.Macrophages
  4. D.Immunoglobulin A✓

Correct Answer

(D) Immunoglobulin A

Solution & Explanation

Answer: (D) Immunoglobulin A Solution: NCERT states that colostrum, the milk produced during the initial few days of lactation, contains several antibodies absolutely essential to develop resistance in the new-born. The specific antibody (immunoglobulin) that confers passive immunity through colostrum is Immunoglobulin A (IgA); the other options are cells, not antibodies. NCERT Reference: Ch 2, p.38, line 42 — "colostrum which contains several antibodies absolutely essential to"

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