Why do scientists need a way to sort, or classify, living things? What method do they use to do this?

So that they can be studied easily and scientists use biological method to classify organisms into groups and subgroups

Explanation:

i think the answer would d

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.