NEET 2021 · Class 12

Ecosystem

Which of the following statements is not correct?

  1. (A)Pyramid of biomass in sea is generally inverted.
  2. (B)Pyramid of biomass in sea is generally upright.
  3. (C)Pyramid of energy is always upright.
  4. (D)Pyramid of numbers in a grassland ecosystem is upright.

The NCERT line that answers it

Verbatim line

The pyramid of biomass in sea is generally inverted because the biomass of fishes far exceeds that of phytoplankton.

Chapter
Ecosystem
Section
12.5 ECOLOGICAL PYRAMIDS
Page
8
Words matched
19 of 19

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 pyramid of biomass in sea is generally inverted', which directly contradicts option B ('Pyramid of biomass in sea is generally upright'), making B the incorrect statement and thus the correct answer to the MCQ.

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.

Question text is reproduced from the published NEET 2021 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.