pollen garins are where male gametes are found in flowering plants
if there are no male gametes there is no sexual reproduction in plants
What is the role of Pollen grain in plants?
Pollen grain is a fine to coarse powder consisting of microgametophytes (pollen grains), which produce the male gametes (sperm cells) of seed plants. Each pollen grain contains vegetative cells (only one in most flowering plants but several in other seed plants) and a generative cell containing a tube nucleus (that produces the pollen tube) and a generative nucleus (that divides to form the two sperm cells). The group of cells is surrounded by a cellulose cell wall and a thick, tough outer wall made of sporopollenin.
So, It acts as the Sperm and helps as a carrier of ecological information in plants
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