List of monoecious plants among the following are

Options

A. Chara, coconut, Cucurbita, maize
B. Chara, Marchantia, papaya, date palm
C. maize, Cucurbita, Cladophora, date palm
D. Funaria, Cycas, Cucurbita, papaya

Answer

To determine the list of monoecious plants from the given options, we need to identify which plants possess both male and female reproductive structures on the same individual. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Understand Monoecious Plants**:
- Monoecious plants are those that have both male (staminate) and female (pistillate) reproductive organs on the same individual. This allows them to produce both male and female gametes.

2. **Review the Options**:
- We need to analyze the options provided to identify which ones are monoecious.

3. **Option A Analysis**:
- **Chara**: Monoecious (both reproductive parts present).
- **Coconut**: Monoecious (both reproductive parts present).
- **Cucurbita**: Monoecious (both reproductive parts present).
- **Mace**: Monoecious (both reproductive parts present).
- **Conclusion**: All listed plants in Option A are monoecious.

4. **Option B Analysis**:
- **Khara**: Monoecious (both reproductive parts present).
- **Mercantile**: Dioecious (only one reproductive part present).
- **Papaya**: Dioecious (only one reproductive part present).
- **Dead Palm**: Dioecious (only one reproductive part present).
- **Conclusion**: Option B contains dioecious plants, making it incorrect.

5. **Option C Analysis**:
- **Mace**: Monoecious (both reproductive parts present).
- **Cucurbita**: Monoecious (both reproductive parts present).
- **Cladophora**: Monoecious (both reproductive parts present).
- **Dead Palm**: Dioecious (only one reproductive part present).
- **Conclusion**: Option C is incorrect due to the presence of a dioecious plant.

6. **Option D Analysis**:
- **Phuneria**: Monoecious (both reproductive parts present).
- **Cycas**: Dioecious (only one reproductive part present).
- **Cucurbita**: Monoecious (both reproductive parts present).
- **Papaya**: Dioecious (only one reproductive part present).
- **Conclusion**: Option D is incorrect due to the presence of dioecious plants.

7. **Final Conclusion**:
- The only option that contains all monoecious plants is **Option A**.

### Final Answer:
The list of monoecious plants among the options is **Option A: Chara, Coconut, Cucurbita, Mace**.