Example 1 · difficulty 3/5
Surfactant in alveoli helps prevent collapse by:
- A. raising pleural friction
- B. binding all blood oxygen
- C. reducing surface tension
- D. blocking CO₂ diffusion
2026 source guide · Biology
NEET 2026 Biology Breathing and Exchange of Gases Questions
Connect the official 2026 paper with current Biology practice without labelling original previews as PYQs.
150 original questions · explicit provenance labels
BiologyPlate 21
NeetVellum atlas · fig. biology
21
What to master
ventilation, gas exchange, transport and respiratory regulation.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 1/5
Which respiratory surface is correctly matched with Insects?
- A. skin only
- B. lungs with alveoli
- C. external gills
- D. tracheal network
Example 3 · difficulty 1/5
During normal inspiration, air passes directly from the nasal chamber into the:
- A. pharynx
- B. alveoli
- C. oesophagus
- D. pleural cavity
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2026 Biology Breathing and Exchange of Gases PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2026 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.