2021 source guide · Biology

NEET 2021 Biology Human Physiology Questions

Connect the official 2021 paper with current Biology practice without labelling original previews as PYQs.

Practice 1150 verified questions →Check official NTA archive ↗

1150 original questions · explicit provenance labels

BiologyPlate 92

NeetVellum atlas · fig. biology

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 1/5

A hormone secreted by the pineal gland helps maintain the 24-hour sleep–wake cycle in humans and also influences body temperature, pigmentation and the timing of the menstrual cycle. Identify this hormone.

A. Melatonin
B. Serotonin
C. Epinephrine
D. Melanocyte-stimulating hormone

Example 2 · difficulty 2/5

A patient passes very large volumes of pale, dilute urine and complains of persistent thirst, yet routine tests show normal blood glucose levels. Deficiency of which hormone best explains this condition?

A. Insulin
B. Vasopressin (ADH)
C. Cortisol
D. Aldosterone

Example 3 · difficulty 3/5

Which pairing of an adrenal cortical zone with its principal secretion is correct?

A. Zona glomerulosa – cortisol
B. Zona fasciculata – aldosterone
C. Zona reticularis – dehydroepiandrosterone (a sexocorticoid)
D. Zona fasciculata – adrenaline

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 2021 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 2021 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.