Mark the incorrect match

Options

A. Placoid scales : Trygon
B. Operculum: Labeo
C. Air bladder: Torpedo
D. Viviparous : Scoliodon

Answer

To solve the question of identifying the incorrect match among the given options, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Option 1: Plicoid Scales - Trigon**
- Plicoid scales are characteristic of cartilaginous fishes, including the Trigon (Stingray). Therefore, this match is **correct**.

2. **Option 2: Opiculum - Labio**
- Opiculum is a feature of bony fishes (Osteichthyes). Labio refers to a genus of bony fishes. Hence, this match is **correct**.

3. **Option 3: Air Bladder - Torpedo**
- The air bladder is present in bony fishes to help with buoyancy. Torpedo, known as the electric ray, is a cartilaginous fish and does not possess an air bladder. Therefore, this match is **incorrect**.

4. **Option 4: VV Parascholodon**
- Scholodon, commonly known as Dogfish, is a cartilaginous fish that gives birth to live young. The term VV Parascholodon refers to this reproductive characteristic. Thus, this match is **correct**.

### Conclusion:
The incorrect match is **Option 3: Air Bladder - Torpedo**.

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