Select an incorrect statement.

Options

A. The stem is the descending part of the axis bearing branches, leaves, flowers and fruits.
B. Stem is generally green when young and later often become woody and dark brown.
C. Some stems perform the function of vegetative propagation.
D. The region of the stem where leaves are born are called nodes.

Answer

To solve the question of selecting an incorrect statement regarding the morphology of flowering plants, we can analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- **Statement:** "The stem is a descending part of the axis bearing branches, leaves, flowers, and fruits."
- **Evaluation:** This statement is incorrect. The stem is actually an ascending part of the plant axis. It grows upward and supports branches, leaves, flowers, and fruits.

2. **Analyze the Second Statement:**
- **Statement:** "The stem is generally green when young and later often becomes woody and dark brown."
- **Evaluation:** This statement is correct. Young stems are typically green due to chlorophyll, and as they mature, they can become woody and dark brown.

3. **Analyze the Third Statement:**
- **Statement:** "Some stems perform the function of vegetative propagation."
- **Evaluation:** This statement is correct. Certain stems, like tubers (e.g., potatoes), can reproduce vegetatively, forming new plants from the stem.

4. **Analyze the Fourth Statement:**
- **Statement:** "The region of the stem where leaves are born are called the nodes."
- **Evaluation:** This statement is correct. Nodes are indeed the points on the stem where leaves, branches, or flowers emerge.

5. **Conclusion:**
- After evaluating all statements, the only incorrect statement is the first one. Therefore, the answer to the question is the first option.

### Final Answer:
The incorrect statement is: "The stem is a descending part of the axis bearing branches, leaves, flowers, and fruits."

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