Match List-I with List-II.
List-I List-II
A. Heart (I) Erythropoietin
B. Kidney (II) Aldosterone
C.

Q: What is NEET?

NEET is a competitive examination conducted in India. This question is from the 2025 NEET Biology paper.

Q: How can I prepare for NEET Biology?

To prepare for NEET Biology, practice previous year questions (PYQs), understand concepts thoroughly, and solve mock tests regularly. This 2025 question covers Chemical Coordination and Integration topic.

Q: What is the difficulty level of this question?

This NEET 2025 Biology question has a easy difficulty level and is marked as an important question.

Q: Where can I find more NEET previous year questions?

You can find more NEET previous year questions on AspirantMitraa. Browse by subject, topic, year, and difficulty level to practice effectively.

Question

Match List-I with List-II.
List-I List-II
A. Heart (I) Erythropoietin
B. Kidney (II) Aldosterone
C. Gastro-intestinal tract (III) Atrial natriuretic factor
D. Adrenal Cortex (IV) Secretin
Choose the correct answer from the options given below :
(1) A-III, B-I, C-IV, D-II
(2) A-II, B-I, C-III, D-IV
(3) A-IV, B-III, C-II, D-I
(4) A-I, B-III, C-IV, D-II

Accepted Answer

Correct Answer: A — A-III, B-I, C-IV, D-IIStep-by-step Solution:Heart → III (Atrial Natriuretic Factor/Peptide — ANF/ANP): The atrial cardiomyocytes (cells of the atria of the heart) produce and secrete ANF when blood pressure increases and atrial walls are stretched by increased blood volume. ANF actions: promotes sodium (Na⁺) and water excretion by kidneys (natriuresis and diuresis), inhibits renin and aldosterone secretion, causes vasodilation — all of which reduce blood pressure and blood volume. It is a counter-regulatory hormone to the renin-angiotensin-aldosterone system (RAAS).Kidney → I (Erythropoietin — EPO): The peritubular interstitial cells of the kidney (specifically the peritubular fibroblasts in the cortex and outer medulla) produce erythropoietin in response to hypoxia (low oxygen levels). EPO acts on erythroid progenitor cells in the bone marrow, stimulating their proliferation and differentiation into mature red blood cells (erythropoiesis). Kidney disease reduces EPO production → anemia. Recombinant EPO is used to treat anemia and (controversially) as a performance-enhancing drug in athletes.Gastro-intestinal tract → IV (Secretin): Secretin is a peptide hormone produced by S cells of the duodenum (first part of small intestine) in response to acidic chyme entering from the stomach. It stimulates the pancreas to secrete bicarbonate-rich (alkaline) juice to neutralize the acid, and inhibits gastric acid secretion and gastric motility. Secretin was the first hormone ever discovered (by Bayliss and Starling, 1902) — a landmark in the history of endocrinology. Other GI hormones: Gastrin (G cells of stomach → stimulates HCl secretion), Cholecystokinin/CCK (I cells of duodenum → stimulates bile and pancreatic enzyme release).Adrenal Cortex → II (Aldosterone): Aldosterone is a mineralocorticoid steroid hormone synthesized in the zona glomerulosa of the adrenal cortex. It acts on the distal convoluted tubule (DCT) and collecting duct of nephrons: promotes Na⁺ and water reabsorption and K⁺ excretion → increases blood volume and blood pressure. Its secretion is stimulated by angiotensin II (part of RAAS), hyperkalemia, and ACTH.Extended Explanation:Non-endocrine organs that produce hormones (important for NEET): Heart → ANF; Kidney → Erythropoietin, Renin, Calcitriol (active vitamin D₃); Liver → Angiotensinogen, IGF-1, Thrombopoietin; GI Tract → Gastrin, Secretin, CCK, GIP, Motilin, Ghrelin; Adipose tissue → Leptin, Adiponectin; Thymus → Thymosins (thymosin, thymopoietin); Placenta → hCG, hPL, Progesterone, Estrogen. These 'local hormones' or hormones from non-classical endocrine glands are frequently tested in NEET.Key Concepts: Hormone sources, heart (ANF), kidney (EPO), GI tract (secretin), adrenal cortex (aldosterone), non-classical endocrine organs.

Master NEET with Our Test Series

More Questions from Chemical Coordination and Integration

Frequently Asked Questions

Master NEET with Our Test Series

More Questions from Chemical Coordination and Integration

Frequently Asked Questions