The correct answer is (d). Pollen is produced in the anther, which is the male part of the flower. The anther is located at the top of the stamen, which is one of the male reproductive organs of the flower. The anther is made up of four pollen sacs, which contain the pollen grains. The pollen grains are the male gametes, which are the reproductive cells that fertilize the female egg cells.
The corolla is the inner part of the flower, which is made up of the petals. The petals are usually brightly colored and attract pollinators, such as bees and butterflies. The style is the female part of the flower, which is located between the stigma and the ovary. The stigma is the sticky part of the style that receives the pollen grains. The ovary is the female reproductive organ of the flower, which contains the ovules. The ovules are the female gametes, which are the reproductive cells that are fertilized by the pollen grains.
The answer to the question is (d). Pollen is produced in the anther, which is the male part of the flower.