Find odd one w.r.t. plants pollinated by biotic agents

Options

A. Ophrys, Yucca
B. Sunflower, Mango
C. Rose, Cotton
D. Vallisneria, Zostera

Answer

To solve the question of finding the odd one out with respect to plants pollinated by biotic agents, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Pollination**:
- Pollination can occur through biotic (living organisms like insects, birds, etc.) or abiotic (non-living factors like wind and water) agents.

2. **Analyze the Options**:
- We have several options to consider. We need to identify which of these options includes plants that do not rely on biotic agents for pollination.

3. **Evaluate Each Option**:
- **Option 1: Eucalyptus and Ophyrus**: These plants are known to be pollinated by bees and moths, which are biotic agents.
- **Option 2: Sunflower and Mango**: Both of these plants are also pollinated by biotic agents (insects and birds).
- **Option 3: Rose and Cotton**: These plants are typically pollinated by insects, making them reliant on biotic agents.
- **Option 4: Valisneria and Zostera**: These plants are known to be pollinated by water currents, which is an abiotic method of pollination.

4. **Identify the Odd One Out**:
- From the analysis, we see that Options 1, 2, and 3 are all dependent on biotic agents for pollination. However, Option 4 (Valisneria and Zostera) is the only one that relies on abiotic agents (water) for pollination.

5. **Conclusion**:
- Therefore, the odd one out with respect to plants pollinated by biotic agents is **Option 4: Valisneria and Zostera**.

### Final Answer:
**Option 4: Valisneria and Zostera** is the odd one out as they are pollinated by abiotic agents (water), while the others are pollinated by biotic agents.