The character associated with the plant in which pollintion is by Tageticula.

Options

A. Marginal placenation
B. Pentamerous flowers
C. Trilocular ovary
D. Perigynous flowers.

Answer

To solve the question regarding the character associated with the plant in which pollination is carried out by Tegeticula, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Pollination Mechanism**:
- Tegeticula is a moth known as the yucca moth. It has a mutualistic relationship with the yucca plant, where it plays a crucial role in pollination.

2. **Identify the Characteristics of Yucca Plants**:
- Yucca plants have specific floral structures that are adapted for their relationship with Tegeticula.

3. **Analyze the Given Options**:
- Option 1: Marginal placentation
- Option 2: Pentamerous flowers
- Option 3: Trilocular ovary
- Option 4: Perigenous flowers

4. **Determine the Correct Characteristic**:
- The key characteristic associated with yucca plants, which are pollinated by Tegeticula, is the presence of a **trilocular ovary**. This means the ovary has three chambers (locules) where the moth deposits its eggs.

5. **Eliminate Incorrect Options**:
- Marginal placentation is incorrect because yucca plants exhibit basal placentation.
- Pentamerous flowers and perigenous flowers do not specifically relate to the pollination by Tegeticula.

6. **Conclude the Answer**:
- Therefore, the correct answer is **Option 3: Trilocular ovary**.

### Final Answer:
The character associated with the plant in which pollination is by Tegeticula is **Trilocular ovary** (Option 3).