It's pollen.
the powdery solid a flower have is pollen grains
Pollen is the fine powdery substance, usually yellow, produced by the male parts of a plant and located on the anthers of seed plants.
The yellow powdery substance in the anther is called pollen. Pollen contains the male reproductive cells of plants, and it is released from the anther to fertilize the female reproductive cells in the plant's ovary.
Pollen
Yellow
The tall yellow flower in the garden is a sunflower
Zucchini can turn yellow due to overripening, lack of nutrients, or a fungal disease called powdery mildew.
Yellow bll is a flower....
Zucchini may turn yellow due to overripening, lack of nutrients, or a fungal disease called powdery mildew.
The Evening Primrose is a nocturnal yellow flower. This flower only blooms at night and is pollinated by nocturnal insects.
A yellow flower is the sign of love in America but in some places it may be a flower of death. ^ this answer scares me
A white and yellow flower that begins with D is a daisy.