Which of the following is not a character of racemose ?
(a.) The floral axis shows continuous growth
(b.) The basal flower is older , and the apical flower is younger.
(c.) The flower opens from th periphery to the center .
(d.) The arrangement is basipetal.

Options

A. a and c
B. b and d
C. Only c
D. Only d

Answer

To solve the question "Which of the following is not a character of racemose?", we need to analyze each option provided and determine which one does not align with the characteristics of a racemose inflorescence.

### Step-by-Step Solution:

1. **Understanding Racemose Inflorescence**:
- Racemose inflorescence is characterized by a continuous growth pattern where flowers are arranged along a central axis. The flowers bloom in a specific order based on their position on the axis.

2. **Analyzing Option (a)**:
- **Statement**: "The floral axis shows continuous growth."
- **Analysis**: This is a true characteristic of racemose inflorescence. The floral axis does indeed show continuous growth.

3. **Analyzing Option (b)**:
- **Statement**: "The basal flower is older, and the apical flower is younger."
- **Analysis**: This statement is also true. In racemose inflorescence, the flowers at the base are older, while the newer flowers are found at the apex.

4. **Analyzing Option (c)**:
- **Statement**: "The flower opens from the periphery to the center."
- **Analysis**: This statement is correct as well. In racemose inflorescence, flowers typically open in a centripetal manner, meaning they open from the outside (periphery) towards the inside (center).

5. **Analyzing Option (d)**:
- **Statement**: "The arrangement is basipetal."
- **Analysis**: This statement is incorrect. In racemose inflorescence, the arrangement is acropetal, meaning that the younger flowers are at the top (apex) and older flowers are at the bottom (base). The term "basipetal" would imply the opposite arrangement.

### Conclusion:
- The option that does not represent a characteristic of racemose inflorescence is **(d) The arrangement is basipetal**. Therefore, the correct answer is **(d)**.