How many plants in the list given below are wind - pollinated plants ?
Coconut , Vallisneria , Ophrys, Amorphophallus, Commelina, bamboo, wheat , rice , Yucca.

Options

A. Seven
B. Ten
C. Four
D. Five

Answer

To determine how many plants from the given list are wind-pollinated, we will analyze each plant one by one based on their pollination methods.

### Step-by-Step Solution:

1. **Coconut**:
- Coconut is primarily pollinated by insects.
- **Classification**: Insect-pollinated (I).

2. **Vallisneria**:
- Vallisneria is a water-pollinated plant.
- **Classification**: Water-pollinated (WD).

3. **Ophrys**:
- Ophrys is also an insect-pollinated plant.
- **Classification**: Insect-pollinated (I).

4. **Amorphophallus**:
- Amorphophallus is known to be insect-pollinated as well.
- **Classification**: Insect-pollinated (I).

5. **Commelina**:
- Commelina is a wind-pollinated plant.
- **Classification**: Wind-pollinated (W).

6. **Bamboo**:
- Bamboo is a well-known wind-pollinated plant.
- **Classification**: Wind-pollinated (W).

7. **Wheat**:
- Wheat is also a wind-pollinated plant.
- **Classification**: Wind-pollinated (W).

8. **Rice**:
- Rice is another example of a wind-pollinated plant.
- **Classification**: Wind-pollinated (W).

9. **Yucca**:
- Yucca is primarily pollinated by insects.
- **Classification**: Insect-pollinated (I).

### Summary of Classifications:
- **Insect-pollinated**: Coconut, Ophrys, Amorphophallus, Yucca (4 plants)
- **Water-pollinated**: Vallisneria (1 plant)
- **Wind-pollinated**: Commelina, Bamboo, Wheat, Rice (4 plants)

### Conclusion:
From the analysis, we find that there are **4 wind-pollinated plants** in the list: Commelina, Bamboo, Wheat, and Rice.

### Final Answer:
**4 plants are wind-pollinated.**

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