5.116 Development of Pollen Grain

What part of a flower produces pollen grains?

• Anther

• Stigma

• Pollen sac

• Filament

How are pollen grains produced?

• By meiosis

• By fusion

• By mitosis

• By division

What is the name of the cells in each pollen sac that are diploid (2n)?

• Tube nucleus

• Pollen sac

• Generative nucleus

• Microspore mother cells

What is the name given to the four microspore cells collectively?

• Pollen sac

• Tube nucleus

• Generative nucleus

• Tetrad

What divides by mitosis in the pollen grain and produces two nuclei?

• Pollen sac

• Generative nucleus

• Tube nucleus

• Nucleus

What breaks when the pollen grain matures and releases the pollen grains?

• Generative nucleus

• Tube nucleus

• Wall of the pollen sac

• Pollen sac

What is the name of the process in which the microspore mother cell divides to produce four haploid microspore cells?

• Meiosis

• Mitosis

• Division

• Fusion