AP BIOLOGY

Detailed explanation-1: -Pollen is technically a male gametophyte, meaning an organism that makes “gametes”, which in this case is sperm. In its simplest form, pollen has three cells: one vegetative cell enclosing two sperm cells. So we’re all covered in plant sperm.

Detailed explanation-2: -There is no sperm present in a pollen grain. A pollen grain is a tiny male plant, a male gametophyte (gamete-forming plant). He is a multicellular organism (usually two cells in flowering plants, but more in the case of gymnosperm pollen) capable of producing sperm if he gets an opportunity.

Detailed explanation-3: -Pollen is a powdery substance produced by seed plants. It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells).

Detailed explanation-4: -Male reproductive organs generate pollen grains, which produce pollen tubes, each consisting of a vegetative cell that engulfs two immotile sperm cells2.