Which statement is a fundamental principle of the cell theory?
a. all cells have a plasma membrane
b. the genetic material in cells in dna
c. living organisms are composed of cells
d. eukaryotic are larger than prokaryotic cells

the sphincter muscles at the end of the digestive tract is the anus.

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.