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 will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Pollination**:
- Pollination is the transfer of pollen grains from the male anther to the stigma of the female part of a flower. It can occur through various agents, which can be biotic (living organisms) or abiotic (non-living factors).

2. **Analyzing the Options**:
- **Option 1: Ophrys and Yucca**:
- These plants are pollinated by biotic agents, specifically bees and moths.
- **Option 2: Sunflower and Mango**:
- These plants are also pollinated by biotic agents, including wasps, ants, and flies.
- **Option 3: Rose and Cotton**:
- These plants are pollinated by biotic agents as well, with flies and various insects involved.
- **Option 4: Valisneria and Zostera**:
- These plants are pollinated by water, which is an abiotic agent. This process is known as hydrophily.

3. **Identifying the Odd One Out**:
- The first three options (Ophrys and Yucca, Sunflower and Mango, Rose and Cotton) involve biotic agents (living organisms) for pollination.
- In contrast, Valisneria and Zostera rely on water for pollination, which is an abiotic factor.

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

### Final Answer:
The odd one out is **Valisneria and Zostera**.

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