NEET 1990 · Class 11

Body Fluids and Circulation

A vein possesses a large lumen because

  1. (A)tunica media and tunica externa form a single coat
  2. (B)tunica interna and tunica media form a single coat
  3. (C)tunica interna, tunica media and tunica externa are thin
  4. (D)tunica media is a thin coat

The NCERT line that answers it

Verbatim line

The tunica media is comparatively thin in the veins (Figure 15.4).

Chapter
Body Fluids and Circulation
Section
15.4 DOUBLE CIRCULATION
Page
8
Words matched
11 of 11

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 tunica media is comparatively thin in the veins', which is the exact biological fact that makes option D correct and distinguishes it from the other options.

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Question text is reproduced from the published NEET 1990 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.