Outermost skin layer or stratum corneum of Frog consists of

Options

A. Columner unkeratinised cells
B. Flat keratinised cells
C. Flat non-keratinised cells
D. Columnar keratinised cells

Answer

To solve the question regarding the outermost skin layer or stratum corneum of a frog, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the composition of the outermost skin layer (stratum corneum) of a frog.

2. **Identify the Options**: We have four options to choose from:
- Option 1: Columnar unkeratinized cells
- Option 2: Flat keratinized cells
- Option 3: Flat non-keratinized cells
- Option 4: Columnar keratinized cells

3. **Research the Stratum Corneum**: The stratum corneum is the outermost layer of the skin. It is important to know its characteristics:
- It consists of keratinized cells.
- It serves as a protective barrier against pathogens.

4. **Analyze Each Option**:
- **Option 1 (Columnar unkeratinized cells)**: This is incorrect because the stratum corneum is keratinized, not unkeratinized.
- **Option 2 (Flat keratinized cells)**: This is a strong candidate because the stratum corneum is indeed made up of flattened, keratinized cells.
- **Option 3 (Flat non-keratinized cells)**: This is incorrect as the stratum corneum is keratinized.
- **Option 4 (Columnar keratinized cells)**: This is incorrect because the cells are not columnar; they are flattened.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is **Option 2: Flat keratinized cells**.

### Final Answer:
The outermost skin layer or stratum corneum of the frog consists of **flat keratinized cells**.

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