2025 source guide · Biology

NEET 2025 Biology Human Physiology Questions

Use this page to connect the official 2025 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 639 verified questions →Check official NTA archive ↗

What to master

integrated respiratory, circulatory, excretory, neural, endocrine and movement physiology.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 3/5

A patient passes large volumes of pale, dilute urine and complains of intense thirst. The condition is diagnosed as diabetes insipidus arising from deficient release of a hormone. The deficient hormone and its normal target segments are:

A. ADH; distal convoluted tubule and collecting duct
B. aldosterone; proximal convoluted tubule
C. ADH; ascending limb of the loop of Henle
D. atrial natriuretic factor; collecting duct

Example 2 · difficulty 4/5

A substance X is freely filtered at the glomerulus and is neither reabsorbed nor secreted by the renal tubules. If the plasma concentration of X is 0.5 mg mL⁻¹ and the GFR is 125 mL min⁻¹, the rate at which X is excreted in the urine will be:

A. 12.5 mg min⁻¹
B. 250 mg min⁻¹
C. 62.5 mg min⁻¹
D. 6.25 mg min⁻¹

Example 3 · difficulty 2/5

Which one of the following statements about accessory excretory organs is correct?

A. Lungs eliminate nitrogenous wastes such as urea and ammonia
B. Liver removes bilirubin and biliverdin, formed from the breakdown of haemoglobin
C. Sebaceous glands eliminate water, NaCl and urea through sebum
D. Sweat produced by sweat glands contains sterols, hydrocarbons and waxes

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

Breathing and Exchange of Gases →Body Fluids and Circulation →Excretory Products and their Elimination →Locomotion and Movement →Neural Control and Coordination →Chemical Coordination and Integration →

Frequently asked questions

Are these official NEET 2025 Biology Human Physiology 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.