Pollen grain development in angiosperms
- goes through __ and __.
microsporogenesis and microgametogenesis
begins with stamen, anther and filament. Inside the anther are connective and vascular tissue and a tapetum, which produces the micrsporocyte-->
meiosis--> tetrad of microspores, each with a generative cell and tube cell, called the pollen grain--> germination--> mature male gametophyte with pollen tube, gametes, and tube nucleus
pollen tube grows downward to ovule and ovary