Organised female cone is absent in

Options

A. Ephedra
B. Pinus
C. Cycas
D. None of these

Answer

To solve the question "Organised female cone is absent in," we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which of the given options does not have an organized female cone. An organized female cone typically refers to a well-defined structure that houses the female reproductive organs in plants.

2. **Analyzing Option 1: Ephedra**:
- In Ephedra, the female cone is present, although it is smaller than the male cone.
- The female cones are located in the axils of the leaves.
- Therefore, **Ephedra has an organized female cone**. This option is incorrect.

3. **Analyzing Option 2: Pinus**:
- In Pinus, there is also a well-organized female cone.
- The female cones are distinct and play a significant role in reproduction.
- Thus, **Pinus has an organized female cone**. This option is also incorrect.

4. **Analyzing Option 3: Cycas**:
- Cycas is a type of gymnosperm and is dioecious, meaning male and female reproductive structures are found on separate plants.
- In the female Cycas plant, there are no definitive organized female cones. Instead, the female reproductive structures are represented by megasporophylls, which are arranged in a rosette-like formation.
- These megasporophylls collectively form what is referred to as the female strobilus, but they do not constitute an organized female cone.
- Therefore, **Cycas does not have an organized female cone**. This option is correct.

5. **Analyzing Option 4: Nanarchies**:
- The term "Nanarchies" appears to be a typographical error or a less common term. Assuming it refers to a type of plant, we would need to evaluate its reproductive structures.
- However, based on the context of the question and the previous analysis, we can conclude that Cycas is the most clear-cut answer regarding the absence of an organized female cone.

### Conclusion:
The correct answer to the question "Organised female cone is absent in" is **Option 3: Cycas**.

---