Q.112 Botany ⭐ 360° Option Elimination Active

NEET 2026 Botany Question 112 Solution

Topic: Biological Classification · Official NTA Booklet Code 50

Question

Match List-I with List-II. List I: A. Spherical; B. Rod; C. Comma; D. Spirillum. List II: I. Vibrio; II. Cocci; III. Spirilla; IV. Bacilli. Choose the correct answer from the options given below:

✓

Verified Against NTA Final Answer Key

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

📚 Biological Classification Easy

📋 Given Parameters & Problem Setup

List-I Shapes A. Spherical, B. Rod, C. Comma, D. Spirillum

List-II Bacterial Names I. Vibrio, II. Cocci, III. Spirilla, IV. Bacilli

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The 30-Second Exam Hall Shortcut: ⚡ Bacterial Shape Match Formula

⏱️ Save ~40 seconds

Spherical = Cocci (II), Rod = Bacilli (IV), Comma = Vibrio (I), Spiral = Spirilla (III)!

1 A. Spherical -> Coccus / Cocci (II).

2 B. Rod-shaped -> Bacillus / Bacilli (IV).

3 C. Comma-shaped -> Vibrio (I).

4 D. Spiral / Spirillum -> Spirilla (III).

5 Direct alignment: A-II, B-IV, C-I, D-III -> Matches Option (4)!

6 Solved in under 5 seconds!

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Biological Classification (Archaebacteria: Distinct cell wall structure enabling survival in extreme habitats).

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Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Correlate Spherical Bacteria (A)

Bacteria with a spherical or oval cell shape are termed Coccus (plural: Cocci). They can exist as single cells, diplococci, streptococci (chains), or staphylococci (clusters).

\text{Spherical} \xrightarrow{\text{Form}} \text{Cocci (II)}

• A correlates with II.

Step 2

Correlate Rod-Shaped Bacteria (B)

Bacteria that are elongated and rod-shaped are termed Bacillus (plural: Bacilli). Examples include Lactobacillus and Bacillus anthracis.

\text{Rod-shaped} \xrightarrow{\text{Form}} \text{Bacilli (IV)}

• B correlates with IV.

Step 3

Correlate Comma-Shaped Bacteria (C)

Bacteria that possess a single curve, resembling a comma, are classified as Vibrio. A well-known medical example is Vibrio cholerae.

\text{Comma-shaped} \xrightarrow{\text{Form}} \text{Vibrio (I)}

• C correlates with I.

Step 4

Correlate Spiral Bacteria (D)

Rigid helical, spiral-shaped bacteria are termed Spirillum (plural: Spirilla).

\text{Spirillum} \xrightarrow{\text{Form}} \text{Spirilla (III)}

• D correlates with III.

Step 5

Consolidate the Match

Combining all pairs gives: A-II, B-IV, C-I, D-III. This matches Option (4).

\text{Match}: \mathbf{A}\text{-II}, \; \mathbf{B}\text{-IV}, \; \mathbf{C}\text{-I}, \; \mathbf{D}\text{-III} \implies \text{Option (4)}

• Matches official NTA final answer key Option D / (4).

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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. Misidentifies spherical bacteria as Vibrio and rod as Spirilla.

⚠️

Student Fallacy (Why candidates pick this trap): Random guessing.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Claims spherical bacteria are Spirilla.

⚠️

Student Fallacy (Why candidates pick this trap): Inverting spherical and spiral shapes.

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Matches rod to Vibrio and comma to Bacilli.

⚠️

Student Fallacy (Why candidates pick this trap): Swapping Bacilli with Vibrio.

4 D

✓ 100% Correct

Verdict & Scientific Reason:

100% accurate match across all four bacterial morphologies according to NCERT.

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Why this is airtight: None; standard direct recall.

⚠️

NTA Trap Alert: Confusing Bacilli (Rods) with Vibrio (Comma)

Under time pressure, students occasionally confuse the rod-shaped Bacilli with comma-shaped Vibrio or spiral Spirilla.

🛡️ How to avoid the -1 mark: Think: "C" for Coccus = Circular/sphere; "V" for Vibrio = Vibrant Comma!

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Core NEET Syllabus Standard

NEET Biology Core Syllabus · Biological Classification Standard Benchmark

Core Scientific Principle Tested:

"Bacteria are grouped into four categories based on their shape: spherical Coccus, rod-shaped Bacillus, comma-shaped Vibrio, and spiral Spirillum."

Syllabus Focus: Kingdom Monera - Bacteria

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

Cocci are Circles, Bacilli are Bars, Vibrios are Commas, Spirilla are Spirals like stars!

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NEET 2026 Botany Question 112 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Bacterial Shape Match Formula

Step-by-Step Rigorous Workflow & Mathematical Proof

Correlate Spherical Bacteria (A)

Correlate Rod-Shaped Bacteria (B)

Correlate Comma-Shaped Bacteria (C)

Correlate Spiral Bacteria (D)

Consolidate the Match

360° Option Elimination Engine Key Feature

NTA Trap Alert: Confusing Bacilli (Rods) with Vibrio (Comma)

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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