Which of the following is not a characteristic feature of insect pollinated floweres ?

Options

A. fragrance
B. nectaries
C. foul odour
D. mucilagnous covering on pollen grains

Answer

To solve the question "Which of the following is not a characteristic feature of insect-pollinated flowers?" we will analyze each of the given options based on the characteristics of entomophilous (insect-pollinated) flowers.

### Step-by-Step Solution:

1. **Understand the Characteristics of Insect-Pollinated Flowers**:
- Insect-pollinated flowers, also known as entomophilous flowers, have specific adaptations to attract insects for pollination.

2. **Evaluate Each Option**:
- **Option A: Fragrance**:
- Insect-pollinated flowers are often fragrant to attract insects. Therefore, this is a characteristic feature.

- **Option B: Nectaries**:
- These flowers secrete nectar, which is a sugary fluid that attracts insects. This is also a characteristic feature of insect-pollinated flowers.

- **Option C: Foul Odor**:
- Insect-pollinated flowers typically do not produce foul odors. Instead, they emit pleasant fragrances to attract pollinators. Thus, this is not a characteristic feature of insect-pollinated flowers.

- **Option D: Mucilaginous Covering on the Pollen Grain**:
- The pollen grains of insect-pollinated flowers often have a mucilaginous covering that makes them sticky, allowing them to adhere to the bodies of insects. This is indeed a characteristic feature.

3. **Conclusion**:
- After evaluating all the options, we can conclude that the option that is **not a characteristic feature of insect-pollinated flowers** is **Option C: Foul Odor**.

### Final Answer:
**C: Foul odor**