NEET 2014 · Class 11

Chemical Coordination and Integration

Identify the hormone with its correct matching of source and function.

  1. (A)Oxytocin - posterior pituitary, growth and maintenance of mammary glands.
  2. (B)Melatonin - pineal gland, regulates the normal rhythm of sleepwake cycle.
  3. (C)Progesterone - corpus luteum, stimulation of growth and activities of female secondary sex organs.
  4. (D)Atrial natriuretic factor - ventricular wall, increases the blood pressure.

The NCERT line that answers it

Verbatim line

Pineal secretes a hormone called **melatonin**.

Chapter
Chemical Coordination and Integration
Section
19.2.3 The Pineal Gland
Page
3
Words matched
37 of 37

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that melatonin is secreted by the pineal gland, which matches the source in option B, and the full paragraph confirms its role in regulating sleep-wake cycle rhythms, directly justifying the correct answer.

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Question text is reproduced from the published NEET 2014 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.