Step 1: Recall the parts: the stamen (male part) = anther + filament; the pistil (female part) = stigma + style + ovary. Step 2: Pollen grains are made in the anther, so the first statement is correct. Step 3: After fertilisation, the ovule becomes the seed and the ovary becomes the fruit, so the second and fourth statements are correct. Step 4: The stigma is the sticky tip of the pistil that receives pollen; it does not produce it. So this statement is incorrect. Answer: The stigma produces pollen grains.