How does the male gemete in flowers differ to the animal male gamete?

The male gamete in flowers, known as pollen, consists of two sperm cells enclosed within a protective outer layer, allowing it to survive in the harsh environment of the plant world. In contrast, the male gamete in animals, typically sperm cells, are motile and equipped with a flagellum for swimming to the egg. Additionally, pollen is involved in a dual fertilization process in flowering plants, while animal sperm usually engage in direct fertilization. Overall, the structure and function of male gametes in plants and animals reflect their different reproductive strategies.