When determining the growth rate, you need to know

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

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.