In which of the following plant, pollination takes place due to secretion of foul odour by the flowers?

Options

A. Maize
B. Pinus
C. Vallisneria
D. Rafflesia

Answer

To solve the question regarding which plant undergoes pollination due to the secretion of a foul odor by its flowers, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which plant's flowers secrete a foul odor that aids in pollination.

2. **Analyzing the Options**: The options provided are:
- Maize
- Pinus
- Valley Senaria
- Rafflesia

3. **Evaluating Each Option**:
- **Maize**: This plant is known for wind pollination (anemophily). It does not rely on foul odors for pollination. Thus, this option is incorrect.
- **Pinus**: Similar to maize, Pinus also undergoes wind pollination (anemophily). Therefore, this option is also incorrect.
- **Valley Senaria**: This is an aquatic plant that is pollinated by water (hydrophily). It does not secrete foul odors for pollination, making this option incorrect as well.
- **Rafflesia**: This plant is known for having the largest flower in the world and is famous for secreting a foul odor. This odor attracts insects, such as flies and beetles, which are responsible for its pollination (zoophily). This option is correct.

4. **Conclusion**: Based on the analysis, the correct answer is **Rafflesia**, as it is the plant that pollinates due to the secretion of foul odor by its flowers.

### Final Answer:
The plant in which pollination takes place due to the secretion of foul odor by the flowers is **Rafflesia**.

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