Answer
b. carpel-produces pollen
Work Step by Step
Unlike the other options that are correctly matched, the carpel does not produce pollen. Pollen sacs of the anther, produce microspores during meiosis. The microspores undergo mitosis to become immature pollen grains with two cells. The carpel, instead, consists of the stigma style ovary and ovule. During meiosis, it produces four megaspores. Therefore, the pair that is mismatched is b. carpel-produces pollen.
