Multiple choice At which stage is the pollen grain in angiosperms released? 1- celled 2-celled 3-celled 2 or 3-celled Reveal answer Fill a bubble to check yourself D Correct answer Explanation In the majority of angiosperms, pollen grains are released at the 2-celled stage (vegetative and generative cells), while in some species, they are released at the 3-celled stage.