The opening between the right atrium and the right ventricle is guarded by ________.

(A)bicuspid valve
(B)tricuspid valve
(C)semilunar valve
(D)sino-atrial node

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 that the opening between the right atrium and right ventricle is guarded by the tricuspid valve, directly answering the question and distinguishing it from the bicuspid valve.

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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 Re-NEET 2026 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.