Final answer:
The petal is the part of the flower that is not directly involved in reproduction, serving instead to attract pollinators. The reproductive structures include the stamen, sepal, and style. Pollen development occurs in the anther, part of the stamen. Hence, the correct answer is option (a).
Step-by-step explanation:
The structure in a flower that is not directly involved in reproduction is the petal. Petals are part of the corolla and serve to attract pollinators with their bright colors and shapes. On the other hand, the stamen, which includes the filament and the anther, is a male reproductive part; the sepal protects the developing flower bud; and the style is a component of the female reproductive part, the pistil, supporting the stigma and connecting it to the ovary.
To answer the review questions:
- Pollen grains develop in the anther (option a).
- In a plant's male reproductive organs, the development of pollen takes place in a structure called the anther, which is part of the stamen.