Mention the pollinating agent of an inflorescence of small dull coloured floweres with well exposed stamens and large feathery stigma. Give any one characteristic of pollen grains produced by such flowers.

Explanation

### Step-by-Step Solution:

1. **Identify the Characteristics of the Flowers**:
The question describes flowers that are small, dull-colored, have well-exposed stamens, and large feathery stigmas.

2. **Determine the Pollinating Agent**:
Flowers that are dull-colored and not brightly colored typically do not attract insect pollinators. Instead, these characteristics suggest that the flowers are adapted for wind pollination. The well-exposed stamens allow for the easy release of pollen into the air, while the large feathery stigmas are designed to catch pollen carried by the wind.

...