Which of these occurs during both photosynthesis and cellular respiration? A. Carbon dioxide and water are produced.
B. Reactions take place in the cytoplasm.
C. Special molecules carry energy.
D. Sugars break down.

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.