Q.177 Zoology ⭐ 360° Option Elimination Active

NEET 2023 Zoology Question 177 Solution

Topic: Reproductive Health · Official NTA Booklet Code G5

Question

Match List I with List II. List I: A. Vasectomy; B. Coitus interruptus; C. Cervical caps; D. Saheli. List II: I. Oral method; II. Barrier method; III. Surgical method; IV. Natural method. Choose the correct answer from the options given below:

✓

Verified Against NTA Final Answer Key

Option (3) : A-III, B-IV, C-II, D-I

📚 Reproductive Health Easy

📋 Given Parameters & Problem Setup

Contraceptives Vasectomy, Coitus interruptus, Cervical caps, Saheli

Method Categories Oral, Barrier, Surgical, Natural

⚡

The 30-Second Exam Hall Shortcut: ⚡ Contraception Category Matcher

⏱️ Save ~20 seconds

Match standard contraceptive modalities: Vasectomy = Surgical sterilization (III). Coitus interruptus = Natural/Traditional method (IV). Cervical caps = Barrier method (II). Saheli = Oral contraceptive pill (I)! Match Option (3)!

1 Vasectomy: Surgical / Sterilization method in males (severing/tying vas deferens) -> A-III.

2 Coitus interruptus (withdrawal): Natural / Traditional method -> B-IV.

3 Cervical caps: Barrier method (reusable rubber barriers for females) -> C-II.

4 Saheli: Oral contraceptive pill developed by CDRI Lucknow -> D-I.

5 Match combination: A-III, B-IV, C-II, D-I -> Option (3).

🛡️

Why You Can 100% Trust This Shortcut: Canonical NCERT Reproductive Health contraceptive categories.

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Classification of Contraceptive Methods

Birth control methods are categorized based on their mechanism of preventing conception:

\begin{aligned} \text{\textbf{A. Vasectomy:}} & \quad \text{Terminal male sterilization } \implies \mathbf{\text{Surgical method (III)}} \\[4pt] \text{\textbf{B. Coitus interruptus:}} & \quad \text{Withdrawal of penis before ejaculation } \implies \mathbf{\text{Natural method (IV)}} \\[4pt] \text{\textbf{C. Cervical caps:}} & \quad \text{Rubber female barriers covering cervix } \implies \mathbf{\text{Barrier method (II)}} \\[4pt] \text{\textbf{D. Saheli:}} & \quad \text{Non-steroidal centchroman oral tablet } \implies \mathbf{\text{Oral method (I)}} \end{aligned}

Step 2

Verbatim NCERT References

NCERT states under Population Explosion and Birth Control: - "Natural methods: Periodic abstinence, coitus interruptus and lactational amenorrhea." - "Barrier methods: Condoms, diaphragms, cervical caps and vaults." - "Oral administration of small doses... Saheli - the new oral contraceptive for the females." - "Surgical methods, also called sterilization... Vasectomy in male and tubectomy in female."

Step 3

Option Verification

Pairing A-III, B-IV, C-II, D-I matches Option (3) uniquely.

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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 1

✗ Incorrect

Verdict & Scientific Reason:

Mismatches Vasectomy with natural method.

⚠️

Student Fallacy (Why candidates pick this trap): Calling surgery a natural method.

2 2

✗ Incorrect

Verdict & Scientific Reason:

Mismatches Coitus interruptus with oral method and Saheli with barrier.

⚠️

Student Fallacy (Why candidates pick this trap): Swapping natural and oral methods.

3 3

✓ 100% Correct

Verdict & Scientific Reason:

Every method corresponds perfectly to its textbook category.

💡

Why this is airtight: None; textbook verbatim match.

4 4

✗ Incorrect

Verdict & Scientific Reason:

Mismatches Vasectomy with barrier method.

⚠️

Student Fallacy (Why candidates pick this trap): Scrambling surgical and barrier methods.

⚠️

NTA Trap Alert: Barrier vs. IUD vs. Oral Method Confusion

Students sometimes confuse cervical caps (barrier) with IUDs (intrauterine devices like CuT). Cervical caps are purely physical rubber barriers that block sperm entry into the cervix.

🛡️ How to avoid the -1 mark: Cervical caps & Diaphragms = Barriers. Saheli = Oral pill. Vasectomy = Surgical.

📖

Core NEET Syllabus Standard

NCERT Biology · Reproductive Health Standard Benchmark

Core Scientific Principle Tested:

"Vasectomy is a surgical method; Coitus interruptus is a natural method; Cervical caps are barrier methods; Saheli is an oral contraceptive method."

Syllabus Focus: Birth Control Methods

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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NEET 2023 Zoology Question 177 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Contraception Category Matcher

Step-by-Step Rigorous Workflow & Mathematical Proof

Classification of Contraceptive Methods

Verbatim NCERT References

Option Verification

360° Option Elimination Engine Key Feature

NTA Trap Alert: Barrier vs. IUD vs. Oral Method Confusion

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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