Tricuspid valve is found in between

(A)sinus venosus and right auricle
(B)right auricle and right ventricle
(C)left ventricle and left auricle
(D)ventricle and aorta

The NCERT line that answers it

Verbatim line

The opening between the right atrium and the right ventricle is guarded by a valve formed of three muscular flaps or cusps, the tricuspid valve, whereas a bicuspid or mitral valve guards the opening between the left atrium and the left ventricle.

Chapter: Body Fluids and Circulation
Section: 15.3.1 Human Circulatory System
Page: 5
Words matched: 42 of 42

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 'The opening between the right atrium and the right ventricle is guarded by... the tricuspid valve', which directly matches option B (right auricle and right ventricle) since 'right atrium' and 'right auricle' are synonymous in this context.

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Question text is reproduced from the published NEET 1989 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.