Black (stem) rust of wheat is caused by

(A)Alternaria solani
(B)Ustilago nuda
(C)Puccinia graminis
(D)Xanthomonas oryzae

The NCERT line that answers it

Verbatim line

Other fungi cause diseases in plants and animals; wheat rust-causing *Puccinia* is an important example.

Chapter: Biological Classification
Section: 2.3 KINGDOM FUNGI
Page: 6
Words matched: 15 of 15

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

How this line gives the answer

0, emb=0.8291, combined=0.8975). Verified: high — The span explicitly states 'wheat rust-causing Puccinia', which directly matches the question asking for the cause of black (stem) rust of wheat and identifies Puccinia graminis as the correct answer.

We did this for 1,565 questions.

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 2010 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.