Q.80 Zoology ⭐ 360° Option Elimination Active

NEET 2020 Zoology Question 80 Solution

Topic: Chemical Coordination and Integration · Official NTA Booklet Code E1

Question

Match the following columns and select the correct option. Column - I Column - II (a) Pituitary gland (i) Grave's disease (b) Thyroid gland (ii) Diabetes mellitus (c) Adrenal gland (iii) Diabetes insipidus (d) Pancreas (iv) Addison's disease (a) (b) (c) (d)

(1)(iv) (iii) (i) (ii)
(2)(iii) (ii) (i) (iv)
(3)(iii) (i) (iv) (ii)
(4)(ii) (i) (iv) (iii)

✓

Verified Against NTA Final Answer Key

Option (3) : (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

📚 Chemical Coordination and Integration Easy

📋 Given Parameters & Problem Setup

Column I (Endocrine Glands) (a) Pituitary gland, (b) Thyroid gland, (c) Adrenal gland, (d) Pancreas

Column II (Disorders) (i) Grave's disease, (ii) Diabetes mellitus, (iii) Diabetes insipidus, (iv) Addison's disease

⚡

The 30-Second Exam Hall Shortcut: ⚡ "Pituitary = Diabetes Insipidus; Thyroid = Grave's; Adrenal = Addison's; Pancreas = Diabetes Mellitus!"

⏱️ 25 seconds

Pituitary undersecretion of ADH causes Diabetes insipidus (a->iii). Thyroid hypersecretion causes Grave's disease (b->i). Adrenal cortex hyposecretion causes Addison's disease (c->iv). Pancreas insulin deficiency causes Diabetes mellitus (d->ii). Match: (iii), (i), (iv), (ii) -> Option 3 in 10 seconds!

1 Pituitary gland (neurohypophysis releases ADH): Deficiency leads to Diabetes insipidus -> (a)-(iii).

2 Thyroid gland: Hyperthyroidism causes Grave's disease (exophthalmic goitre) -> (b)-(i).

3 Adrenal gland (adrenal cortex hyposecretion): Addison's disease -> (c)-(iv).

4 Pancreas (beta-cells insulin deficiency): Diabetes mellitus -> (d)-(ii).

5 Mapping: (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii) -> Option 3.

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Human Physiology: Chemical Coordination and Integration (Endocrine Disorders)

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Match Pituitary Gland

The posterior pituitary (neurohypophysis) releases vasopressin/ADH. Hyposecretion or impairment of ADH synthesis leads to inability of kidney to conserve water, resulting in copious dilute urine excretion known as Diabetes insipidus. Thus, (a) matches (iii).

Step 2

Match Thyroid Gland

Grave's disease is a form of hyperthyroidism characterized by enlargement of the thyroid gland, protrusion of the eyeballs (exophthalmos), increased basal metabolic rate, and weight loss. Thus, (b) matches (i).

Step 3

Match Adrenal Gland

Underproduction of hormones by the adrenal cortex (mineralocorticoids and glucocorticoids) alters carbohydrate metabolism, causing acute weakness and fatigue, leading to Addison's disease. Thus, (c) matches (iv).

Step 4

Match Pancreas

Hyposecretion of insulin by the beta-cells of the islets of Langerhans in the pancreas impairs glucose uptake, leading to prolonged hyperglycemia, glycosuria, and ketone body formation (Diabetes mellitus). Thus, (d) matches (ii).

⭐

360° Option Elimination Engine Key Feature

Diagnose every choice: Know exactly why the right option works and why distractors fail.

4-Option Deep Scan

1 A

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; attributes Addison's disease to the pituitary gland.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing adrenal and pituitary disorders.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; attributes Diabetes mellitus to the thyroid gland.

⚠️

Student Fallacy (Why candidates pick this trap): Swapping thyroid and pancreatic pathologies.

3 C

✓ 100% Correct

Verdict & Scientific Reason:

Accurate pairing across all four endocrine glands and their respective clinical disorders.

💡

Why this is airtight: None; canonical endocrine disorder matching.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect; confuses Diabetes mellitus (pancreas) with Diabetes insipidus (pituitary ADH).

⚠️

Student Fallacy (Why candidates pick this trap): Mixing up the two different types of Diabetes (Mellitus vs Insipidus).

⚠️

NTA Trap Alert: Diabetes Insipidus vs Diabetes Mellitus

Diabetes INSIPIDUS = Pituitary (ADH deficiency -> excessive water loss). Diabetes MELLITUS = Pancreas (Insulin deficiency -> high sugar/ketones).

🛡️ How to avoid the -1 mark: Remember: Mellitus = Sweet (Sugar/Pancreas); Insipidus = Tasteless (Water/Pituitary ADH)!

📖

Core NEET Syllabus Standard

Zoology · Chemical Coordination and Integration Standard Benchmark

Core Scientific Principle Tested:

Syllabus Focus: Endocrine Glands and Associated Disorders Match

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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NEET 2020 Zoology Question 80 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ "Pituitary = Diabetes Insipidus; Thyroid = Grave's; Adrenal = Addison's; Pancreas = Diabetes Mellitus!"

Step-by-Step Rigorous Workflow & Mathematical Proof

Match Pituitary Gland

Match Thyroid Gland

Match Adrenal Gland

Match Pancreas

360° Option Elimination Engine Key Feature

NTA Trap Alert: Diabetes Insipidus vs Diabetes Mellitus

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

🔗 Related Questions — Chemical Coordination and Integration

Anatomy and Hormonal Secretions of the Human Pituitary Gland

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Pituitary Hormones: Target Organs, Actions & Clinical Disorders

Hormones of Heart, Kidney, Gastrointestinal Tract, and Adrenal Cortex

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