Q.147 Zoology ⭐ 360° Option Elimination Active

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NEET 2025 Zoology Question 147 Solution

Topic: Human Reproduction · Official NTA Booklet Code 45

Question

The first menstruation is called:

(1)Menopause
(2)Menarche
(3)Diapause
(4)Ovulation

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Verified Against NTA Final Answer Key

Option (2) : Menarche

📚 Human Reproduction Easy

📋 Given Parameters & Problem Setup

Event The first occurrence of menstruation in human females

Target Term Scientific / physiological terminology

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The 30-Second Exam Hall Shortcut: ⚡ Reproductive Milestones Fingerprint

⏱️ Save ~10 seconds

The FIRST menstruation at puberty = MENARCHE! The permanent CESSATION of menstruation around age 50 = MENOPAUSE! First = Menarche!

1 Recall NCERT Section 3.4.1 (Menstrual Cycle):

2 - "The first menstruation begins at puberty and is called menarche."

3 - "In human beings, menstrual cycles cease around 50 years of age; that is termed as menopause."

4 - "Diapause" is a stage of suspended development in zooplankton.

5 - "Ovulation" is the release of secondary oocyte from mature Graafian follicle.

6 First menstruation = Menarche!

7 Select Option (2) Menarche!

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Why You Can 100% Trust This Shortcut: Menstrual Cycle Hormonal Control & LH Surge (NCERT Biology · Human Reproduction: Ovulation triggered by LH peak at mid-cycle).

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Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Definition of Menstrual Milestones

The reproductive life of human females is demarcated by two canonical physiological milestones:

• Menarche: The very first menstrual bleeding marking the onset of puberty (typically between ages 11–14). It signifies the activation of the hypothalamic-pituitary-ovarian axis.
• Menopause: The permanent cessation of menstrual cycles and ovarian follicular activity, occurring naturally around 45–50 years of age.

Step 2

Evaluation of Distractor Terms

Distinguishing unrelated biological phenomena:

• Diapause: A stage of suspended physiological development or metabolic dormancy exhibited by many zooplankton species in lakes and ponds to avoid unfavorable conditions.
• Ovulation: The mid-cycle process occurring under the influence of the LH surge where the mature Graafian follicle ruptures to release the secondary oocyte into the peritoneal cavity.

Step 3

Conclusion

The first menstruation is scientifically designated as Menarche, matching Option (2).

\text{First Menstruation} = \text{Menarche (Option 2)}

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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 A

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Menopause is the permanent cessation of menstruation, not its inception.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing the beginning of menstrual life with its end.

2 B

✓ 100% Correct

Verdict & Scientific Reason:

100% correct. Direct verbatim textbook definition: "The first menstruation begins at puberty and is called menarche."

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Why this is airtight: None; basic terminology recall.

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Diapause is metabolic dormancy in zooplankton, entirely unrelated to human reproductive physiology.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing ecological dormancy with human reproductive terms.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Ovulation is the release of the egg/secondary oocyte from the ovary, not the menstrual bleeding flow.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing ovum release with menstruation.

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NTA Trap Alert: Menarche vs Menopause

Men-ARCHE has root "arche" meaning "beginning/origin" (like archeology). Meno-PAUSE means "pause/stop". Never confuse the start with the end!

🛡️ How to avoid the -1 mark: Arche = Start (Menarche); Pause = Stop (Menopause).

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Core NEET Syllabus Standard

NEET Biology Core Syllabus · Human Reproduction Standard Benchmark

Core Scientific Principle Tested:

"Menarche is the first menstruation beginning at puberty in human females."

Syllabus Focus: Menstrual Cycle · Menarche and Menopause

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

M-Arche = Marching into puberty (First period); M-Pause = Pausing forever!

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NEET 2025 Zoology Question 147 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Reproductive Milestones Fingerprint

Step-by-Step Rigorous Workflow & Mathematical Proof

Definition of Menstrual Milestones

Evaluation of Distractor Terms

Conclusion

360° Option Elimination Engine Key Feature

NTA Trap Alert: Menarche vs Menopause

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

🔗 Related Questions — Human Reproduction

Male vs Female Accessory Ducts and Reproductive Anatomy

Endocrine Regulation of Ovulation (LH Surge) and Corpus Luteum (Progesterone)

Placental Hormones vs. Pituitary Hormones

Secondary Oocyte Envelopes (Zona Pellucida vs Corona Radiata)

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