Which of the following feature is not common between Newt & Hemidactylus

Options

A. Body is divisible into head, neck, trunk and tail
B. Head with pair of eyes and tympanic membrane
C. Trunk has 2 pairs of limbs for locomotion
D. Heart is 3-chambered

Answer

To determine which feature is not common between Newt and Hemidactylus, we will analyze each of the provided features step by step.

### Step 1: Identify the Organisms
- **Newt**: Belongs to the subclass Urodela, which is part of the class Amphibia.
- **Hemidactylus**: Belongs to the subclass Lepidosauria, which is part of the class Reptilia.

### Step 2: Analyze the Features
1. **Body Divisible into Head, Neck, Trunk, and Tail**:
- **Newt**: The body is divisible into head, trunk, and tail.
- **Hemidactylus**: The body is divisible into head, neck, trunk, and tail.
- **Conclusion**: This feature is **not common** between Newt and Hemidactylus.

2. **Head with a Pair of Eyes and Tympanic Membrane**:
- **Newt**: Has a pair of eyes and a tympanic membrane.
- **Hemidactylus**: Also has a pair of eyes and a tympanic membrane.
- **Conclusion**: This feature is **common** to both.

3. **Trunk has Two Pairs of Limbs for Locomotion**:
- **Newt**: Has two pairs of limbs.
- **Hemidactylus**: Also has two pairs of limbs.
- **Conclusion**: This feature is **common** to both.

4. **Heart is Three-Chambered**:
- **Newt**: Has a three-chambered heart.
- **Hemidactylus**: Has an incomplete four-chambered heart (which functions similarly to a three-chambered heart).
- **Conclusion**: This feature is **common** to both in terms of functional similarity.

### Step 3: Final Conclusion
Based on the analysis, the feature that is **not common** between Newt and Hemidactylus is:
- **Body Divisible into Head, Neck, Trunk, and Tail** (Option A).