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NEET 2018 · BiologyPrevious Year Question

The contraceptive 'SAHELI'

Answer: (C) blocks estrogen receptors in the uterus, preventing eggs from getting implanted.. Answer: (c) blocks estrogen receptors in the uterus, preventing eggs from getting implanted.

  1. A.is an IUD.
  2. B.increases the concentration of estrogen and prevents ovulation in females.
  3. C.blocks estrogen receptors in the uterus, preventing eggs from getting implanted.✓
  4. D.is a post-coital contraceptive.

Correct Answer

(C) blocks estrogen receptors in the uterus, preventing eggs from getting implanted.

Solution & Explanation

Answer: (c) blocks estrogen receptors in the uterus, preventing eggs from getting implanted. Solution: Saheli is a non-steroidal 'once a week' oral pill (centchroman) developed by CDRI; it works as a non-steroidal anti-estrogen that blocks estrogen receptors in the uterus, preventing implantation. It is not an IUD and not a post-coital/emergency contraceptive, and it does not increase estrogen concentration, so the other options are wrong. NCERT Reference: Reproductive Health, p.45 — "Saheli –the new oral contraceptive for the females contains a non-steroidal preparation. It is a ‘once a week’ pill with very few side effects and high contraceptive value."

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