Which of the following is NOT a form of asexual reproduction?

Pollination is indeed not a form of asexual reproduction. It is a crucial step in sexual reproduction in flowering plants, where pollen grains are transferred from the male anther to the female stigma of a flower. This process leads to fertilization, where the sperm and egg cells unite to form seeds, ultimately resulting in genetic variation in the offspring due to the mixing of genes from two parent plants.

In contrast, cloning, fission, and vegetative propagation are all asexual reproduction methods. Cloning involves creating genetically identical copies of an organism, fission is a method seen in single-celled organisms where the cell divides into two or more separate entities, and vegetative propagation is a common method in plants where new individuals are produced from the existing plant structures, such as runners in strawberries or tubers in potatoes. This highlights the distinction between asexual methods, which produce genetically identical offspring without the need for sexual reproduction, and the process of pollination, which is fundamental to sexual reproduction.