The type of inflorescence which is not racemose but resembles a single flower is called :

Options

A. capitulum
B. cyathium
C. verticillaster
D. multiparous cyme

Explanation

To solve the question regarding the type of inflorescence that is not racemose but resembles a single flower, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Inflorescence Types**:
- Inflorescence is the arrangement of flowers on a plant. There are two main types: racemose and cymose.
- **Racemose Inflorescence**: In this type, the main axis continues to grow and produces flowers laterally. Examples include racemes and spikes.
- **Cymose Inflorescence**: In this type, the growth is limited, and the main axis terminates in a flower. Examples include cymes.

2. **Identify the Characteristics of the Question**:
- The question specifies that the inflorescence is not racemose but resembles a single flower. This means we are looking for a special type of inflorescence.

3. **Examine the Options**:
- **A. Capitulum**: This is a type of inflorescence where flowers are densely packed on a common receptacle, resembling a single flower (e.g., daisies).
- **B. Scythium**: This is a special type of inflorescence found in plants like Euphorbia. It resembles a single flower and has a unique structure.
- **C. Verticillaster**: This type has whorled arrangements of flowers, not resembling a single flower.
- **D. Multiparastine**: This is not a commonly recognized term in inflorescence types.

4. **Determine the Correct Answer**:
- The inflorescence that is not racemose and resembles a single flower is **Scythium**. It has a conical receptacle surrounded by an involucre of bracts and contains both male and female flowers.

5. **Final Answer**:
- The correct answer is **B. Scythium**.