Q.177 Zoology ⭐ 360° Option Elimination Active

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NEET 2026 Zoology Question 177 Solution

Topic: Human Health and Disease · Official NTA Booklet Code 50

Question

Which of the following is used as an effective sedative and painkiller for treating post-surgery patients?

(1)Interferon
(2)Antibiotics
(3)Morphine
(4)Anti-retroviral drugs

✓

Verified Against NTA Final Answer Key

Option (3) : Morphine

📚 Human Health and Disease Easy

📋 Given Parameters & Problem Setup

Therapeutic Profile Very effective sedative and painkiller

Clinical Application Widely prescribed to patients who have undergone surgery

⚡

The 30-Second Exam Hall Shortcut: ⚡ Post-Surgery Painkiller Gold Standard

⏱️ Save ~30 seconds

NCERT Verbatim: "Morphine is a very effective sedative and painkiller, useful in surgery patients!"

1 Recognize verbatim NCERT sentence: "Morphine is a very effective sedative and painkiller, and is very useful in patients who have undergone surgery."

2 Morphine is extracted from the latex of the poppy plant Papaver somniferum.

3 Heroin (smack) is diacetylmorphine, a depressant abused illicitly.

4 Cocaine is a CNS stimulant producing euphoria.

5 Cannabinoids affect the cardiovascular system.

6 Select Option (3) Morphine in 5 seconds.

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Human Health and Disease (Oncogenic Viruses & Contact Inhibition Loss in Cancer Cells).

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Botanical Source and Chemistry of Morphine

Morphine is a natural opiate alkaloid obtained from the latex of the opium poppy plant, Papaver somniferum. It binds to specific opioid receptors present in our central nervous system and gastrointestinal tract.

\text{Papaver somniferum (Opium Poppy)} \xrightarrow{\text{Latex}} \mathbf{Morphine} \xrightarrow{\text{Opioid Receptors}} \text{CNS Analgesia & Sedation}

• Diacetylation of morphine yields heroin (diacetylmorphine, or smack).

Step 2

Medical Use vs. Substance Abuse

In clinical medicine, morphine is widely used as a potent analgesic (painkiller) and sedative for managing severe acute pain, particularly in patients undergoing surgery or dealing with terminal cancer pain.

\text{Clinical Utility} \equiv \text{Post-Surgical Sedative & Analgesic} \implies \text{Option (3)}

• However, when taken for purposes other than medicinal use, it leads to severe psychological and physical dependence.

⭐

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. Cocaine is an alkaloid from Erythroxylum coca that interferes with dopamine reuptake, acting as a potent CNS stimulant and hallucinogen at high doses, not a sedative.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing stimulants with sedatives.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Heroin (diacetylmorphine) is an illicit street drug (smack) with high addiction liability, not the standard post-surgery clinical prescription.

⚠️

Student Fallacy (Why candidates pick this trap): Selecting the illicit derivative instead of clinical morphine.

3 C

✓ 100% Correct

Verdict & Scientific Reason:

100% correct. NCERT states verbatim that morphine is a very effective sedative and painkiller used for patients who have undergone surgery.

💡

Why this is airtight: None; textbook recall.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Cannabinoids (from Cannabis sativa) interact with cannabinoid receptors in the brain and affect the cardiovascular system; they are not the classic post-surgical opioid analgesics.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing cannabinoid effects with opioid analgesia.

⚠️

NTA Trap Alert: Morphine vs. Heroin Distinction

Morphine is the medically approved opioid analgesic prescribed after surgery. Heroin is its chemically modified illicit form (diacetylated morphine).

🛡️ How to avoid the -1 mark: Remember: Medicine = Morphine; Illicit abuse = Heroin.

📖

Core NEET Syllabus Standard

NEET Biology Core Syllabus · Human Health and Disease Standard Benchmark

Core Scientific Principle Tested:

"Morphine is a very effective sedative and painkiller, useful in patients who have undergone surgery."

Syllabus Focus: Drugs and Alcohol Abuse

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

Morphine Mends post-surgery pain: Sedative & Analgesic!

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NEET 2026 Zoology Question 177 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Post-Surgery Painkiller Gold Standard

Step-by-Step Rigorous Workflow & Mathematical Proof

Botanical Source and Chemistry of Morphine

Medical Use vs. Substance Abuse

360° Option Elimination Engine Key Feature

NTA Trap Alert: Morphine vs. Heroin Distinction

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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