Q.158 Zoology ⭐ 360° Option Elimination Active

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NEET 2026 Zoology Question 158 Solution

Topic: Locomotion and Movement · Official NTA Booklet Code 50

Question

Which of the following is the correct order of arrangement of vertebrate column from the head to toe?

(1)Cervical vertebra, thoracic vertebra, sacrum, lumbar vertebra
(2)Sacrum, lumbar vertebra, thoracic vertebra, cervical vertebra
(3)Cervical vertebra, lumbar vertebra, thoracic vertebra, sacrum
(4)Cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum

✓

Verified Against NTA Final Answer Key

Option (4) : (b) -> (a) -> (c) -> (d)

📚 Locomotion and Movement Easy

📋 Given Parameters & Problem Setup

Anatomical Region Human Vertebral Column

Direction of Sequence Cranial (Head) to Caudal (Tail)

Given Parts (a) Thoracic, (b) Cervical, (c) Lumbar, (d) Sacrum

⚡

The 30-Second Exam Hall Shortcut: ⚡ Meal Times Mnemonic (Breakfast at 7, Lunch at 12, Dinner at 5)

⏱️ Save ~30 seconds

Cervical (7) -> Thoracic (12) -> Lumbar (5) -> Sacral (1 fused) -> Coccygeal (1 fused)!

1 Order head to toe: Neck comes first = Cervical (b).

2 Chest comes second = Thoracic (a).

3 Lower back comes third = Lumbar (c).

4 Pelvis comes fourth = Sacrum (d).

5 Target sequence: (b) -> (a) -> (c) -> (d).

6 Select Option (4) in under 5 seconds!

🛡️

Why You Can 100% Trust This Shortcut: NCERT Biology · Locomotion and Movement (Human Skeletal Framework: Axial skeleton consists of 80 bones).

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Vertebral Column Divisions

Our vertebral column is formed by 26 serially arranged units called vertebrae and is dorsally placed. It extends from the base of the skull and constitutes the main framework of the trunk.

\text{Skull Base} \rightarrow \text{Cervical } (7) \rightarrow \text{Thoracic } (12) \rightarrow \text{Lumbar } (5) \rightarrow \text{Sacral } (1 \text{ fused}) \rightarrow \text{Coccygeal } (1 \text{ fused})

• Total 26 vertebrae in adult human skeleton (fused from 33 in embryonic stages).

Step 2

Match Given Labels to Sequence

Align the given anatomical regions: (b) Cervical vertebra -> (a) Thoracic vertebra -> (c) Lumbar vertebra -> (d) Sacrum.

(b) \rightarrow (a) \rightarrow (c) \rightarrow (d) \implies \text{Option (4)}

• Cranial means superior/headward; caudal means inferior/tailward.

⭐

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. Places lumbar (lower back) before thoracic (chest).

⚠️

Student Fallacy (Why candidates pick this trap): Swapping thoracic and lumbar vertebrae.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Places thoracic before cervical (neck).

⚠️

Student Fallacy (Why candidates pick this trap): Ignoring that cervical vertebrae start directly below the occipital condyles.

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Starts with lumbar vertebrae.

⚠️

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

4 D

✓ 100% Correct

Verdict & Scientific Reason:

100% anatomically accurate. Cervical (b) -> Thoracic (a) -> Lumbar (c) -> Sacrum (d).

💡

Why this is airtight: None; standard anatomical order.

⚠️

NTA Trap Alert: Cranial vs. Caudal Directionality Trap

Ensure you follow Cranial -> Caudal (Top -> Bottom). If a question asks Caudal -> Cranial, the order reverses to Sacrum -> Lumbar -> Thoracic -> Cervical.

🛡️ How to avoid the -1 mark: Read the directional instruction carefully: "cranial (head) to caudal (tail)".

📖

Core NEET Syllabus Standard

NEET Biology Core Syllabus · Locomotion and Movement Standard Benchmark

Core Scientific Principle Tested:

"The vertebral column is differentiated into cervical (7), thoracic (12), lumbar (5), sacral (1-fused) and coccygeal (1-fused) regions starting from the skull."

Syllabus Focus: Human Skeleton · Vertebral Column

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

Can The Lovely Secretary Come? (Cervical, Thoracic, Lumbar, Sacral, Coccygeal)!

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NEET 2026 Zoology Question 158 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Meal Times Mnemonic (Breakfast at 7, Lunch at 12, Dinner at 5)

Step-by-Step Rigorous Workflow & Mathematical Proof

Vertebral Column Divisions

Match Given Labels to Sequence

360° Option Elimination Engine Key Feature

NTA Trap Alert: Cranial vs. Caudal Directionality Trap

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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