NEET 2013 · Class 12

Human Reproduction

[DIAGRAM: A section of human ovary showing follicles at different stages of development; label A indicates a small developing follicle and label B indicates corpus luteum structures.] The figure shows a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic.

  1. (A)B- Corpus luteum - Secretes progesterone
  2. (B)A- Tertiary follicle - Forms Graafian follicle
  3. (C)B- Corpus luteum - Secretes estrogen
  4. (D)A- Primary oocyte - It is in the prophase I of the meiotic division

The NCERT line that answers it

Verbatim line

The corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium.

Chapter
Human Reproduction
Section
2.4 MENSTRUAL CYCLE
Page
9
Words matched
16 of 16

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 directly states 'The corpus luteum secretes large amounts of progesterone', which matches option A's identification of B as corpus luteum and its function of secreting progesterone.

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Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

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Question text is reproduced from the published NEET 2013 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.