All given members are monoecious, except

Options

A. Marchantia
B. Funaria
C. Anthoceros
D. Sphagnum

Answer

To solve the question "All given members are monoecious, except," we need to identify which of the listed organisms is dioecious. Let's break down the solution step by step.

### Step-by-Step Solution:

1. **Understand the Terms:**
- **Monoecious:** An organism that has both male and female reproductive organs in the same individual.
- **Dioecious:** An organism that has male and female reproductive organs in separate individuals.

2. **Analyze the Options:**
- **Option A: Marchantia**
- Marchantia is known as liverwort and is classified as dioecious. This means it has separate male and female individuals.
- **Option B: Funeria**
- Funeria is a type of moss that is monoecious, meaning it has both male (antheridia) and female (archegonia) reproductive organs in the same individual.
- **Option C: Anthoceros**
- Anthoceros can be either monoecious or dioecious, but it is often considered monoecious in many contexts.
- **Option D: Sphagnum**
- Sphagnum moss is also typically monoecious, having both male and female reproductive structures in the same plant.

3. **Identify the Exception:**
- From the analysis, Marchantia (Option A) is the only organism that is dioecious, while the others (Funeria, Anthoceros, and Sphagnum) are monoecious.

4. **Conclusion:**
- Therefore, the correct answer is **Option A: Marchantia**. It is the only member that is dioecious among the options provided.

### Final Answer:
**Option A: Marchantia**

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