Why most organs sink in water but lungs float

cause lungs have air in them

Explanation:

the other organs have an entire mass, but lungs have air in them, so then float

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.