Which phrase listed below best describes the function of the digestive system?

a.
to filter out waste from the blood

b.
to remove waste from the body

c.
to break down food into nutrients

d.
to protect the body against germs

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.