Assertion (A): In woody plants, cuticular transpiration takes place.
Reason ( R): In woody plants, epidermis is replaced by cork cambium

Options

A. Both A and R are true and R is the correct explanation for A.
B. Both A and R are true but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Explanation

To analyze the assertion and reason provided in the question, we can break down the concepts involved step by step.

### Step 1: Understand the Assertion
The assertion states that "In woody plants, cuticular transpiration takes place."
- **Cuticular transpiration** refers to the process of water vapor loss from the plant through the cuticle, which is a waxy layer covering the epidermis of leaves and stems.

### Step 2: Understand the Reason
The reason states that "In woody plants, epidermis is replaced by cork cambium."
- **Cork cambium** is a type of lateral meristematic tissue that produces cork cells, which replace the epidermis in woody plants. This cork layer is composed of dead cells and provides protection.

### Step 3: Analyze the Relationship
- In woody plants, the epidermis is indeed replaced by cork cambium, which leads to the formation of cork. This cork layer does not have stomata, which are necessary for cuticular transpiration to occur.
- Instead, woody plants primarily lose water through lenticels, which are openings in the cork layer that allow for gas exchange, a process known as **lenticular transpiration**.

### Step 4: Conclusion
- Since cuticular transpiration relies on the presence of an epidermis with a cuticle, and in woody plants, the epidermis is replaced by cork, cuticular transpiration does not occur. Therefore, the assertion is incorrect.
- However, the reason provided is correct as the epidermis is replaced by cork cambium in woody plants.

### Final Answer
- **Assertion (A)**: Incorrect
- **Reason (R)**: Correct