All are features of entomophilous flowers excepts

Options

A. Flowers with aroma
B. Versatile stamens
C. Pollen grain with sticky surface
D. Flowers provide reward to pollinators in the form of nectar and pollen grains

Answer

To solve the question "All are features of entomophilous flowers except," we need to analyze the characteristics of entomophilous flowers and identify which option does not fit.

### Step-by-Step Solution:

1. **Understand Entomophilous Flowers**:
- Entomophilous flowers are those that are pollinated by insects. The process of pollination involves the transfer of pollen from the anther (male part) to the stigma (female part) of the flower, facilitated by insects.

2. **Evaluate the Options**:
- **Option A: Flowers with Aroma**:
- Entomophilous flowers often have a pleasant aroma to attract insects. This is a feature of entomophilous flowers.
- **Option B: Versatile Stamens**:
- Versatile stamens are those that can move freely. This characteristic is more relevant to anemophilous flowers (pollinated by wind) rather than entomophilous flowers. Therefore, this is likely the correct answer as it is not a feature of entomophilous flowers.
- **Option C: Pollen Grain with Sticky Surface**:
- Pollen grains that are sticky help them adhere to the body of insects, facilitating the transfer of pollen. This is indeed a feature of entomophilous flowers.
- **Option D: Flowers Provide Reward to Pollinator in Terms of Nectar and Pollen Grain**:
- Entomophilous flowers typically provide nectar and pollen as rewards to attract pollinators. This is also a feature of entomophilous flowers.

3. **Conclusion**:
- The only option that does not represent a feature of entomophilous flowers is **Option B: Versatile Stamens**. This characteristic is associated with anemophilous flowers.

### Final Answer:
**Option B: Versatile Stamens** is the correct answer as it is not a feature of entomophilous flowers.