Egg of reptiles and birds are

Options

A. mesolecithal
B. telolecithal
C. polylecithal
D. alecithal

Answer

### Step-by-Step Solution

1. **Identify the Question**: The question asks about the type of eggs found in reptiles and birds.

2. **Review the Options**: The options given are:
- A) Mesolecithal
- B) Telolecithal
- C) Polylecithal
- D) Alecithal

3. **Understand the Terms**:
- **Mesolecithal**: This type of egg has a moderate amount of yolk.
- **Telolecithal**: This type of egg contains a large amount of yolk that is unevenly distributed.
- **Polylecithal**: This type of egg has a large amount of yolk that is evenly distributed throughout the egg.
- **Alecithal**: This type of egg has negligible or very little yolk.

4. **Analyze the Characteristics of Reptile and Bird Eggs**:
- Both reptile and bird eggs contain a significant amount of yolk, which is crucial for the development of the embryo.
- The yolk in these eggs is evenly distributed, which is characteristic of polylecithal eggs.

5. **Select the Correct Option**: Based on the analysis, the correct answer is:
- C) Polylecithal

### Conclusion
The eggs of reptiles and birds are classified as **polylecithal** eggs due to the large amount of yolk that is evenly distributed.

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