Phellogen and phellem respectively denote

Options

A. cork and cork cambium
B. cork cambium and cork
C. secondary cortex and cork
D. cork and secondary cortex

Answer

To answer the question regarding what Phellogen and Phellem denote, we can break it down step by step:

### Step 1: Understanding the Terms
- **Phellogen**: This is the scientific term for cork cambium, which is a type of lateral meristem that produces cork cells.
- **Phellem**: This is the scientific term for cork, which is the protective tissue produced by the cork cambium.

### Step 2: Identifying Their Functions
- **Phellogen (Cork Cambium)**: The cork cambium is responsible for the production of cork cells (Phellem) towards the outside. It is involved in the secondary growth of plants and helps in forming a protective barrier.
- **Phellem (Cork)**: The cork cells produced by the cork cambium are dead at maturity and serve as a protective layer for the plant, preventing water loss and protecting against physical damage.

### Step 3: Analyzing the Options
Now, let's analyze the provided options:
1. Cork and Cork Cambium
2. Cork Cambium and Cork
3. Secondary Cortex and Cork
4. Cork and Secondary Cortex

From our understanding:
- Phellogen corresponds to cork cambium (option 2).
- Phellem corresponds to cork (option 2).

### Conclusion
Thus, the correct answer is **Option 2: Cork Cambium and Cork**.

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