Q.130 Botany ⭐ 360° Option Elimination Active

NEET 2026 Botany Question 130 Solution

Topic: Animal Kingdom · Official NTA Booklet Code 50

Question

Given below are two statements: Statement I: The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II: All organisms belonging to Reptilia have three chambered heart. In the light of the above statements, choose the most appropriate answer from the options given below:

(1)Both Statement I and Statement II are correct
(2)Both Statement I and Statement II are incorrect
(3)Statement I is correct but Statement II is incorrect
(4)Statement I is incorrect but Statement II is correct

✓

Verified Against NTA Final Answer Key

Option (3) : Statement I is correct but Statement II is incorrect

📚 Animal Kingdom Medium

📋 Given Parameters & Problem Setup

Statement I The class name Reptilia refers to creeping or crawling mode of locomotion.

Statement II All organisms belonging to Reptilia have three chambered heart.

⚡

The 30-Second Exam Hall Shortcut: ⚡ Crocodile 4-Chamber Exception

⏱️ Save ~40 seconds

Crocodiles are Reptiles with a 4-CHAMBERED Heart! Statement II is FALSE!

1 Evaluate Statement I: Latin repere or reptum means to creep or crawl. -> Statement I is TRUE.

2 Evaluate Statement II: Claims "ALL organisms belonging to Reptilia have three chambered heart".

3 Recall the classic NCERT exception: Crocodiles have a FOUR-chambered heart (two atria, two ventricles)!

4 Because of the word "ALL", Statement II is unequivocally FALSE.

5 Statement I is correct but Statement II is incorrect -> Option (3)!

6 Mark Option (3) in under 10 seconds.

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Animal Kingdom (Class Reptilia: Incomplete 3-chambered heart with 4-chambered exception in crocodiles).

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Evaluate Statement I (Etymology of Reptilia)

The class name Reptilia is derived from the Latin verb "repere" or "reptum", which signifies "to creep or crawl". This refers directly to their terrestrial creeping or crawling mode of locomotion.

\text{Latin: } repere / reptum = \text{to creep or crawl} \implies \text{Statement I is TRUE}

• Matches NCERT opening sentence for Class Reptilia.

Step 2

Evaluate Statement II (Cardiac Anatomy of Reptiles)

In most reptiles (lizards, snakes, turtles), the heart is 3-chambered, possessing two atria and an incompletely divided single ventricle. However, order Crocodilia (crocodiles, alligators, gharials) possesses a fully partitioned, complete 4-chambered heart (two atria and two ventricles). Therefore, the absolute assertion that "ALL organisms belonging to Reptilia have three chambered heart" is false.

\text{Crocodile Heart} = 4\text{-chambered} \implies \text{"All reptiles have 3-chambered heart" is FALSE}

• The universal qualifier "All" invalidates Statement II.

Step 3

Synthesize Verdict

Statement I is correct and Statement II is incorrect. Option (3) is the solely accurate selection.

\text{Statement I is correct but Statement II is incorrect} \implies \text{Option (3)}

• Matches official NTA final answer key Option C / (3).

⭐

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. Overlooks the famous crocodile 4-chambered heart exception.

⚠️

Student Fallacy (Why candidates pick this trap): Ignoring the universal qualifier "All".

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Statement I is an unquestioned etymological truth.

⚠️

Student Fallacy (Why candidates pick this trap): Doubting Statement I.

3 C

✓ 100% Correct

Verdict & Scientific Reason:

100% accurate. Locomotion etymology is correct; crocodile exception refutes Statement II.

💡

Why this is airtight: None; mastered vertebrate circulatory exceptions.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Completely inverted.

⚠️

Student Fallacy (Why candidates pick this trap): Total conceptual reversal.

⚠️

NTA Trap Alert: The "Absolute Word" Trap (All / Always / Never)

In biology, statements containing absolute words like "ALL" are red flags. Reptiles usually have 3 chambers, but crocodiles break the rule with 4 chambers.

🛡️ How to avoid the -1 mark: Whenever you see "ALL reptiles have 3 chambers", think of the crocodile smiling with 4 chambers!

📖

Core NEET Syllabus Standard

NEET Biology Core Syllabus · Animal Kingdom Standard Benchmark

Core Scientific Principle Tested:

"Reptilia refers to creeping/crawling locomotion. Reptilian hearts are 3-chambered, with the crucial exception of crocodiles which possess a 4-chambered heart."

Syllabus Focus: Class Reptilia

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

Reptiles crawl and creep in score, but Crocodiles have chambers four!

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NEET 2026 Botany Question 130 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Crocodile 4-Chamber Exception

Step-by-Step Rigorous Workflow & Mathematical Proof

Evaluate Statement I (Etymology of Reptilia)

Evaluate Statement II (Cardiac Anatomy of Reptiles)

Synthesize Verdict

360° Option Elimination Engine Key Feature

NTA Trap Alert: The "Absolute Word" Trap (All / Always / Never)

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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