Reptiles and birds are-

Options

A. Oviparous
B. Viviparous
C. Ovoviviparous
D. Viviparous and oviparous respectively

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the similarities between reptiles and birds, particularly in terms of their reproductive strategies.

2. **Identifying Key Characteristics**: Both reptiles and birds exhibit internal fertilization, which means that fertilization occurs inside the female's body.

3. **Reproductive Method**: Both groups are oviparous, meaning they lay eggs. This is a significant similarity as it indicates that both reptiles and birds reproduce by laying eggs rather than giving live birth.

4. **Embryonic Development**: The development of the embryo occurs inside the egg in both reptiles and birds. This is another similarity in their reproductive process.

5. **Conclusion**: Based on the similarities identified, the correct option is that reptiles and birds are both oviparous organisms, which means they lay eggs and have internal fertilization.

6. **Final Answer**: Therefore, the answer to the question is that reptiles and birds are both oviparous organisms.

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