What is an acid? select all that apply.

a substance that releases hydrogen ions in water
a substance that releases hydroxide ions in water
a substance that tastes sour
a substance that tastes bitter
a substance with a ph below 7

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.

the missing space is phylum