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Class XI · Biology

Chemical Coordination and Integration: NEET MCQ practice

334 practice questions on Chemical Coordination and Integration, including 42 from past NEET papers, each with an explanation. Practise them chapter by chapter in the GyaanLoop app.

334

Practice questions

209

Easy

123

Medium

2

Hard

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What Chemical Coordination and Integration covers

Topics in the NEET (UG) 2026–27 syllabus for this chapter.

  • Endocrine glands and hormones
  • Human endocrine system- hypothalamus, pituitary, pineal, thyroid, parathyroid, adrenal, pancreas, gonads
  • Mechanism of hormone action (elementary idea); hormones as messengers and regulators
  • Hypo- and hyperactivity and related disorders (dwarfism, acromegaly, cretinism, goiter, diabetes, Addison's disease)

Past NEET questions on Chemical Coordination and Integration

Try each one, then open the answer and explanation.

Question 1 · NEET 2025

Why can’t insulin be given orally to diabetic patients?

  1. A.Human body will elicit strong immune response
  2. B.It will be digested in Gastro-Intestinal (GI) tract
  3. C.Because of structural variation
  4. D.Its bioavailability will be increased
Show answer

Answer: B. It will be digested in Gastro-Intestinal (GI) tract

Insulin is a peptide hormone. If taken orally, digestive enzymes in the stomach and small intestine (proteases) would break it down into amino acids before absorption, making it ineffective.

Question 2 · NEET 2025

Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?

  1. A.Luteinizing hormone (LH)
  2. B.Anti-diuretic hormone (ADH)
  3. C.Follicle-stimulating hormone (FSH)
  4. D.Adenocorticotrophic hormone (ACTH)
Show answer

Answer: B. Anti-diuretic hormone (ADH)

Hypothalamic hormones stored/released by posterior pituitary are ADH and oxytocin. Anterior pituitary hormones (LH, FSH, ACTH) are made in the pituitary itself. ADH is synthesized in hypothalamus.

Question 3 · NEET 2025

Match List-I with List-II. List-I List-II A. Progesterone I. Pars intermedia B. Relaxin II. Ovary C. Melanocyte stimulating hormone III. Adrenal Medulla D. Catecholamines IV. Corpus luteum Choose the correct answer from the options given below:

  1. A.A-IV, B-II, C-I, D-III
  2. B.A-IV, B-II, C-III, D-I
  3. C.A-II, B-IV, C-I, D-III
  4. D.A-III, B-II, C-IV, D-I
Show answer

Answer: A. A-IV, B-II, C-I, D-III

Progesterone is secreted by corpus luteum (IV). Relaxin is from ovary (II). MSH from pars intermedia (I). Catecholamines from adrenal medulla (III). So A-IV, B-II, C-I, D-III.

Question 4 · NEET 2025

Consider the following statements regarding function of adrenal medullary hormones: A. It causes pupilary constriction B. It is a hyperglycemic hormone C. It causes piloerection D. It increases/strength of heart contraction Choose the correct answer from the options given below:

  1. A.C and D Only
  2. B.B, C and D Only
  3. C.A, C and D Only
  4. D.D Only
Show answer

Answer: B. B, C and D Only

Adrenal medulla secretes adrenaline (epinephrine) and noradrenaline. They cause pupil dilation (not constriction), so A is false. They increase blood glucose (hyperglycemic), cause piloerection, and increase heart rate and contraction strength. So B, C, D are correct.

Question 5 · NEET 2025

Match List - I with List - II. List - I List - II A. Heart I. Erythropoietin B. Kidney II. Aldosterone C. Gastro-intestinal III. Atrial natriuretic tracts factor D. Adrenal Cortex IV. Secretin Choose the correct answer from the options given below:

  1. A.A-II, B-I, C-III, D-IV
  2. B.A-IV, B-III, C-II, D-I
  3. C.A-I, B-III, C-IV, D-II
  4. D.A-III, B-I, C-IV, D-II
Show answer

Answer: D. A-III, B-I, C-IV, D-II

Atrial natriuretic factor (ANF) is secreted by the heart. Erythropoietin is secreted by the kidney. Secretin is secreted by the gastrointestinal tract. Aldosterone is secreted by the adrenal cortex.

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