NEET UG 2020 · Zoology · Question 24
NEET 2020 Zoology, question 24
Question 24 of the NEET 2020 paper (code E1) is a Zoology question from Breathing and Exchange of Gases. Its idea, Mechanism of Inspiration, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.
Updated 2026-10-08
Q24 · Zoology
Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases
- 1(a) and (b)Official answer
- 2(c) and (d)
- 3(a), (b) and (d)
- 4only (d)
Official answer: option 1 · NTA final answer key
Same idea
The only question on Mechanism of Inspiration
No other NEET paper from 2017–2026 tested this exact idea.
Mechanism of Inspiration: every question and how it was framed
The chapter
Breathing and Exchange of Gases in ten years of NEET
17 questions from 2017–2026, asked in 9 of 10 papers, about 1.6 a paper. Mechanism of Breathing alone had 11.