Which of the following is the correct combination of the class of vertebrates and properties exhibited by it?

Options

A. Internal fertilization , Aves and Reptilia
B. Oviparity : Chondrichthyes and Osteichthyes
C. Poikilothermic : Amphibia and Mammalia
D. Three chambered heart : Amphibia and Aves

Answer

To solve the question regarding the correct combination of the class of vertebrates and the properties exhibited by them, we can follow these steps:

### Step 1: Identify the Classes of Vertebrates
First, we need to identify the classes of vertebrates mentioned in the question. The main classes include:
- Aves (birds)
- Reptiles
- Amphibians
- Mammals
- Fish

### Step 2: Analyze the Properties
Next, we analyze the properties associated with each class:
1. **Internal Fertilization**: This occurs when fertilization happens inside the female's body. It is characteristic of Aves and Reptiles.
2. **Oviparity**: This refers to laying eggs. Some fish (like Condystris and Strystris) are known to be oviparous, but some can also be viviparous (giving live birth).
3. **Poikilothermic**: This term describes organisms that cannot regulate their body temperature. Amphibians are poikilothermic, while mammals are homeothermic (they can regulate their body temperature).
4. **3-Chambered Heart**: Amphibians typically have a 3-chambered heart, while Aves have a 4-chambered heart.

### Step 3: Match Classes with Properties
Now, we match the classes with their respective properties:
- **Aves**: Internal Fertilization, 4-chambered heart
- **Reptiles**: Internal Fertilization
- **Amphibians**: Poikilothermic, 3-chambered heart
- **Mammals**: Homeothermic
- **Fish**: Oviparity (some are also viviparous)

### Step 4: Determine the Correct Combination
From the analysis, we see that the correct combination of class and property is:
- **Internal Fertilization** is exhibited by both Aves and Reptiles.

### Conclusion
Thus, the correct answer to the question is that the combination of the class of vertebrates and the property exhibited by it is **Internal Fertilization in Aves and Reptiles**.

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