NEET 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: -This pollen tube carries a male gamete to meet a female gamete in an ovule. In a process called fertilisation, the two gametes join and their chromosomes combine, so that the fertilised cell contains a normal complement of chromosomes, with some from each parent flower.

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.