Q.124 Botany ⭐ 360° Option Elimination Active
NEET 2026 Botany Question 124 Solution
Topic: Chemical Coordination and Integration · Official NTA Booklet Code 50
Question
Which one of the following statements is incorrect?
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Verified Against NTA Final Answer Key
Option (2) : α-cells of pancreas secrete insulin
📚 Chemical Coordination and Integration Easy
📋 Given Parameters & Problem Setup
Organ Endocrine pancreas (Islets of Langerhans)
Task Identify the INCORRECT physiological statement
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⏱️ Save ~40 seconds The 30-Second Exam Hall Shortcut: ⚡ Pancreatic Cell Secretion Rule
Alpha = Glucagon; Beta = Insulin! α-cells DO NOT secrete insulin!
1 Recall cell types in Islets of Langerhans:
2 α-cells (alpha cells) secrete GLUCAGON (hyperglycemic hormone).
3 β-cells (beta cells) secrete INSULIN (hypoglycemic hormone).
4 Statement (2) claims "α-cells of pancreas secrete insulin" -> Glaringly FALSE!
5 The question asks for the INCORRECT statement.
6 Select Option (2) in under 5 seconds!
🛡️
Why You Can 100% Trust This Shortcut: NCERT Biology · Chemical Coordination and Integration (Pancreatic Islets of Langerhans: Glucagon from alpha cells, Insulin from beta cells).
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Step-by-Step Rigorous Workflow & Mathematical Proof
Step 1
Histology of the Endocrine Pancreas
The pancreas is a composite (heterocrine) gland. The endocrine part consists of 1 to 2 million Islets of Langerhans representing only 1 to 2 percent of total pancreatic tissue. The two main cell types are alpha (α) cells and beta (β) cells.
- • α-cells comprise ~20% and β-cells comprise ~70% of islet cells.
Step 2
Physiological Roles of Glucagon and Insulin
Glucagon is a peptide hormone that maintains normal blood glucose levels by acting on hepatocytes to stimulate glycogenolysis (breakdown of glycogen into glucose) and gluconeogenesis, producing hyperglycemia. Insulin is a peptide hormone that enhances cellular glucose uptake and stimulates glycogenesis, lowering blood glucose (hypoglycemia).
- • Statement (1) is correct.
- • Statement (3) is correct.
- • Statement (4) is correct.
Step 3
Identify the Incorrect Statement
Statement (2) claims that α-cells secrete insulin. In reality, insulin is secreted exclusively by β-cells. Therefore, Statement (2) is incorrect.
- • Matches official NTA final answer key Option B / (2).
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4-Option Deep Scan
360° Option Elimination Engine Key Feature
Diagnose every choice: Know exactly why the right option works and why distractors fail.
1 A
✗ Incorrect Verdict & Scientific Reason:
Factually true statement, so not the answer to this negative-stem question.
⚠️
Student Fallacy (Why candidates pick this trap): Failing to read "incorrect" in the prompt.
2 B
✓ 100% Correct Verdict & Scientific Reason:
100% false statement, thus the correct answer. Insulin is secreted by β-cells, not α-cells.
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Why this is airtight: None; immediate recognition of endocrine cell swap.
3 C
✗ Incorrect Verdict & Scientific Reason:
Factually true statement. Glucagon induces glycogen breakdown to elevate plasma glucose.
⚠️
Student Fallacy (Why candidates pick this trap): Confusing glycogenolysis with glycogenesis.
4 D
✗ Incorrect Verdict & Scientific Reason:
Factually true statement.
⚠️
Student Fallacy (Why candidates pick this trap): Misreading options.
⚠️
NTA Trap Alert: Confusing Alpha and Beta Secretions
Students in a rush sometimes invert α and β cells, thinking α (first letter) must make the more famous hormone (insulin).
🛡️ How to avoid the -1 mark: Use alphabetical pairing: B comes before G? No, remember B-I (Beta-Insulin) and A-G (Alpha-Glucagon).
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Core NEET Syllabus Standard
NEET Biology Core Syllabus · Chemical Coordination and Integration Standard Benchmark
Core Scientific Principle Tested:
"In the Islets of Langerhans, α-cells secrete glucagon and β-cells secrete insulin. Glucagon stimulates hepatic glycogenolysis."
Syllabus Focus: Pancreas - Islets of Langerhans
✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗
Alpha Glides with Glucagon; Beta Injects Insulin to carry on!
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