Pollination in water hyacinth and water lily is brought about by the agency of:

Options

A. water
B. Insects or wind
C. Birds
D. Bats

Answer

To answer the question regarding the agency of pollination in water hyacinth and water lily, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Identify the Plants**: The question refers to two aquatic plants: water hyacinth and water lily.

2. **Pollination Mechanism in Water Hyacinth**:
- Water hyacinth (Eichhornia crassipes) has attractive purple flowers.
- The flowers are borne on spikes and are designed to attract pollinators.
- The primary agents of pollination for water hyacinth are insects, which are drawn to the colorful flowers.

3. **Pollination Mechanism in Water Lily**:
- Water lily (Nymphaea) also has conspicuous and attractive flowers.
- It produces a large number of pollen grains, which can be dispersed by wind.
- While wind is a significant factor in the pollination of water lily, some flowers may also attract insects, contributing to pollination.

4. **Conclusion**:
- Both water hyacinth and water lily utilize insects and wind as agents for pollination.
- Therefore, the correct answer to the question is that pollination in water hyacinth and water lily is brought about by the agency of insects or wind.

### Final Answer:
Pollination in water hyacinth and water lily is brought about by the agency of **insects or wind**.

---