<P> Pollen itself is not the male gamete . Each pollen grain contains vegetative ( non-reproductive ) cells ( only a single cell in most flowering plants but several in other seed plants ) and a generative ( reproductive ) cell . In flowering plants the vegetative tube cell produces the pollen tube , and the generative cell divides to form the two sperm cells . </P>
<P> Pollen itself is not the male gamete . Each pollen grain contains vegetative ( non-reproductive ) cells ( only a single cell in most flowering plants but several in other seed plants ) and a generative ( reproductive ) cell . In flowering plants the vegetative tube cell produces the pollen tube , and the generative cell divides to form the two sperm cells . </P>
what name is used to designate the tubular protrusion from the pollen grain
what name is used to designate the tubular protrusion from the pollen grain
pollen tube
pollen tube