Which one is the oviparous mammal?

Options

A. Macropus (Kangaroo)
B. Panthera
C. Ornithoryhynchus (Platypus)
D. Whale

Answer

To determine which one is the oviparous mammal from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Oviparous Mammals**:
- Oviparous mammals are those that lay eggs instead of giving birth to live young. This is a rare characteristic among mammals.

2. **Analyze the Options**:
- We have four options to consider:
- **Option 1: Macropus (Kangaroo)**
- **Option 2: Panthera (Big Cats like Tiger, Lion)**
- **Option 3: Ornithorhynchus (Platypus)**
- **Option 4: Whale**

3. **Evaluate Each Option**:
- **Option 1: Macropus (Kangaroo)**:
- Kangaroos are viviparous, meaning they give birth to live young. Therefore, this option is incorrect.

- **Option 2: Panthera (Big Cats)**:
- Big cats such as tigers and lions are also viviparous. They give birth to live young, making this option incorrect as well.

- **Option 3: Ornithorhynchus (Platypus)**:
- The platypus is an oviparous mammal. It lays eggs, which is a unique trait among mammals. This option is correct.

- **Option 4: Whale**:
- Whales are viviparous and give birth to live young. Thus, this option is incorrect.

4. **Conclusion**:
- The only oviparous mammal from the options provided is the **Platypus (Ornithorhynchus)**.

### Final Answer:
The oviparous mammal is **Ornithorhynchus (Platypus)**.

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