Question

technical terms for when the pollen grains of a flower reach the stima

Answer 1

A pollen tube is part of the male gametophyte of seed plants. It acts as a conduit to transport the male gamete cells from the pollen grain, either from the stigma (in flowering plants) to the ovules at the base of the pistil, or directly through ovule tissue in somegymnosperms. In maize, this single cell can grow longer than 12 inches to traverse the length of the pistil.

Pollen tubes were first discovered by Giovanni Battista Amici.

Contents  [hide] 1The pollen tube in Angiosperms2Pollen tubes used to study cell physiology3Pollen tube guidance4See also5References6External links

The pollen tube in Angiosperms[edit]Angiosperm life cycle.

Angiosperm reproduction is a complex process that includes several steps that may vary among species.[1] Each step is a vast procedure in its own right. Pollen is produced by the stamen, the male reproductive organ of the flower. Each pollen grain contains a vegetative cell, and a generative cell that divides to form two sperm cells. The pollen is delivered by the opening of anthers for subsequent pollination, that is, for the transfer of pollen grains to the pistil, the female reproductive organ. Pollination is usually carried out by wind