Q.147 Botany ⭐ 360° Option Elimination Active

NEET 2023 Botany Question 147 Solution

Topic: Cell Cycle and Cell Division · Official NTA Booklet Code G5

Question

Match List I with List II. List I: A. M Phase; B. G₂ Phase; C. Quiescent stage; D. G₁ Phase. List II: I. Proteins are synthesized; II. Inactive phase; III. Interval between mitosis and initiation of DNA replication; IV. Equational division. Choose the correct answer from the options given below:

✓

Verified Against NTA Final Answer Key

Option (4) : A-IV, B-I, C-II, D-III

📚 Cell Cycle and Cell Division Easy

📋 Given Parameters & Problem Setup

List I (Phases) M Phase, G2 Phase, Quiescent stage (G0), G1 Phase

List II (Characteristics) Proteins synthesized, Inactive phase, Interval between mitosis and replication, Equational division

⚡

The 30-Second Exam Hall Shortcut: ⚡ Cell Cycle Phase Hallmark Matcher

⏱️ Save ~25 seconds

Match each phase to its NCERT definition: M Phase = Equational division (IV). G2 Phase = Proteins synthesized (I). Quiescent stage = Inactive phase G0 (II). G1 Phase = Interval between mitosis and DNA replication (III)! Match Option (4)!

1 M Phase: Mitosis involves equational segregation of chromosomes -> A-IV.

2 G2 Phase: Proteins (e.g., tubulin) are synthesized in preparation for mitosis -> B-I.

3 Quiescent stage (G0): Cells enter an inactive phase where they remain metabolically active but do not proliferate -> C-II.

4 G1 Phase: Interval between mitosis and initiation of DNA replication -> D-III.

5 Match combination: A-IV, B-I, C-II, D-III -> Option (4).

🛡️

Why You Can 100% Trust This Shortcut: Canonical NCERT Cell Cycle phase definitions and metabolic characteristics.

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Analysis of Cell Cycle Phases

Correlating each cell cycle phase with its verbatim NCERT definition:

\begin{aligned} \text{\textbf{A. M Phase:}} & \quad \text{Equational division (chromosome number maintained)} \implies \mathbf{\text{IV}} \\[3pt] \text{\textbf{B. } G_2\text{\textbf{ Phase:}}} & \quad \text{Proteins are synthesised in preparation for mitosis} \implies \mathbf{\text{I}} \\[3pt] \text{\textbf{C. Quiescent stage (} G_0 \text{\textbf{):}}} & \quad \text{Cells exit cycle and enter an inactive phase} \implies \mathbf{\text{II}} \\[3pt] \text{\textbf{D. } G_1\text{\textbf{ Phase:}}} & \quad \text{Interval between mitosis and initiation of DNA replication} \implies \mathbf{\text{III}} \end{aligned}

Step 2

Verification of Quiescent Phase G0

NCERT explicitly states: "These cells that do not divide further exit G1 phase to enter an inactive stage called quiescent stage (G0) of the cell cycle. Cells in this stage remain metabolically active but no longer proliferate."

Step 3

Option Elimination

A-IV is present in Options (3) and (4). B-I uniquely identifies Option (4), while Option (3) incorrectly assigns B to 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 1

✗ Incorrect

Verdict & Scientific Reason:

Mismatches M phase with inactive phase.

⚠️

Student Fallacy (Why candidates pick this trap): Calling M phase inactive.

2 2

✗ Incorrect

Verdict & Scientific Reason:

Mismatches M phase with G1 interval.

⚠️

Student Fallacy (Why candidates pick this trap): Scrambling interphase definitions.

3 3

✗ Incorrect

Verdict & Scientific Reason:

Assigns G2 phase to inactive phase (II) instead of protein synthesis (I).

⚠️

Student Fallacy (Why candidates pick this trap): Swapping G2 and G0 descriptions.

4 4

✓ 100% Correct

Verdict & Scientific Reason:

Every phase matches its canonical NCERT characteristic verbatim.

💡

Why this is airtight: None; textbook verbatim match.

⚠️

NTA Trap Alert: G0 "Inactive Phase" Misconception Trap

Although NCERT terms G0 an "inactive phase", cells in G0 are strictly active metabolically; "inactive" refers solely to the cessation of cell proliferation/division.

🛡️ How to avoid the -1 mark: Remember: G0 = Inactive regarding division, but fully active metabolically.

📖

Core NEET Syllabus Standard

NCERT Biology · Cell Cycle and Cell Division Standard Benchmark

Core Scientific Principle Tested:

"M Phase is equational division; G2 phase synthesises proteins; Quiescent stage G0 is an inactive proliferative phase; G1 is the interval between mitosis and DNA replication."

Syllabus Focus: Phases of Cell Cycle

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

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NEET 2023 Botany Question 147 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Cell Cycle Phase Hallmark Matcher

Step-by-Step Rigorous Workflow & Mathematical Proof

Analysis of Cell Cycle Phases

Verification of Quiescent Phase G0

Option Elimination

360° Option Elimination Engine Key Feature

NTA Trap Alert: G0 "Inactive Phase" Misconception Trap

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

🔗 Related Questions — Cell Cycle and Cell Division

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