Example 1 · difficulty 2/5
The basic respiratory rhythm is generated mainly in the:
- A. cerebellum
- B. hypothalamus only
- C. spinal sensory ganglion
- D. medullary respiratory centre
2025 source guide · Biology
NEET 2025 Biology Breathing and Exchange of Gases Questions
Connect the official 2025 paper with current Biology practice without labelling original previews as PYQs.
150 original questions · explicit provenance labels
BiologyPlate 47
NeetVellum atlas · fig. biology
47
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 3/5
The most important normal chemical stimulus for breathing is usually:
- A. rise in CO₂ and H⁺
- B. small rise in arterial O₂
- C. rise in nitrogen
- D. fall in body mass
Example 3 · difficulty 2/5
Asthma primarily involves:
- A. destruction of all alveolar walls only
- B. inflammation and narrowing of airways
- C. fluid in pleural cavity only
- D. loss of haemoglobin iron
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 2025 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 2025 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.