Twisted aestivation is found in :-

Options

A. Malvaceae
B. Asteraceae
C. Fabaceae
D. Mimosoideae

Answer

To determine which plant family exhibits twisted aestivation, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Aestivation**:
- Aestivation refers to the arrangement of petals or sepals in a flower bud before it opens.

2. **Identify the Types of Aestivation**:
- There are four main types of aestivation:
- Valvate: Petals are adjacent to each other without overlapping.
- Twisted: Each petal overlaps the next one in a spiral manner.
- Imbricate: Petals overlap each other in a random fashion.
- Vexillary: One large petal (standard) and two smaller petals (wings) with a keel petal.

3. **Analyze the Given Options**:
- The options provided are:
- A) Malvaceae
- B) Asteraceae
- C) Fabaceae
- D) Mimosoideae

4. **Recall Characteristics of Each Family**:
- **Malvaceae**: Known for twisted aestivation, where petals overlap each other.
- **Asteraceae**: Typically exhibits valvate aestivation.
- **Fabaceae**: Known for vexillary aestivation.
- **Mimosoideae**: Generally does not exhibit twisted aestivation.

5. **Conclude the Correct Answer**:
- Based on the characteristics of the families, twisted aestivation is found in the **Malvaceae** family.

### Final Answer:
Twisted aestivation is found in **Malvaceae**.