In which of the following plant ovules are not enclosed by any ovary wall and remains exposed both before and after fertilization ?

Options

A. Eucalyptus
B. Triticum
C. Cedrus
D. Mangifera

Answer

To solve the question regarding which plant has ovules that are not enclosed by any ovary wall and remain exposed both before and after fertilization, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a type of plant where ovules are not enclosed by an ovary wall. This means we are looking for a plant that has exposed seeds.

2. **Identify Key Terms**: The key terms here are "ovules," "ovary wall," and "exposed." We need to focus on the type of plants that have these characteristics.

3. **Recall Plant Categories**: Plants are broadly categorized into two groups based on their reproductive structures: Angiosperms (flowering plants) and Gymnosperms (non-flowering plants).

4. **Analyze Angiosperms**: In angiosperms, the ovules are enclosed within the ovary, which develops into a fruit after fertilization. Therefore, angiosperms do not fit the criteria of having exposed ovules.

5. **Analyze Gymnosperms**: Gymnosperms, on the other hand, are characterized by having seeds that are not enclosed by an ovary wall. Their seeds are often found on cones and remain exposed.

6. **Review the Options**: The options provided are:
- Eucalyptus (Angiosperm)
- Triticum (Wheat, Angiosperm)
- Cedrus (Cedar, Gymnosperm)
- Mangifera (Mango, Angiosperm)

7. **Identify the Correct Answer**: Among the options, Cedrus is the only Gymnosperm. Therefore, it is the plant where ovules are not enclosed by any ovary wall and remain exposed both before and after fertilization.

### Conclusion:
The correct answer is **Cedrus**.

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