The presence of light and dark band is a feature of

Options

A. Cardiac muscle
B. Skeletal muscle
C. Smooth muscle
D. Both (1) & (2)

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the presence of light and dark bands in muscle tissue. We need to identify which type of muscle exhibits this characteristic.

2. **Identifying Muscle Types**: The options provided are:
- Cardiac muscle
- Skeletal muscle
- Smooth muscle
- Both cardiac and skeletal muscle

3. **Analyzing Cardiac Muscle**: Cardiac muscle is striated, meaning it has a pattern of light and dark bands due to the arrangement of proteins. The light bands (I bands) are primarily composed of actin, while the dark bands (A bands) contain myosin.

4. **Analyzing Skeletal Muscle**: Similar to cardiac muscle, skeletal muscle also has a striated appearance with alternating light and dark bands. The I bands (light) consist of actin, and the A bands (dark) consist of myosin.

5. **Analyzing Smooth Muscle**: Smooth muscle does not have a striated appearance because it lacks the organized arrangement of myofibrils that is present in cardiac and skeletal muscle. Therefore, it does not exhibit light and dark bands.

6. **Conclusion**: Since both cardiac and skeletal muscles exhibit light and dark bands, the correct answer is that both options 1 (cardiac muscle) and 2 (skeletal muscle) are correct.

### Final Answer:
The presence of light and dark bands is a feature of both cardiac muscle and skeletal muscle (Option D: Both 1 and 2).

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