Does fitness(as used in biology) and survival have the same meaning? why or why not

NO, they are not the same. The fittest individual is not necessarily the strongest, fastest, or biggest.  Fitness also applies to the ability to find a mate and produce offspring. Survival is the form that an individual will leave the most copies of itself in the subsequent generations. Fitness does not include a measure of survival or lifespan. Fitness is measured by an organism's ability to survive and reproduce, which determines the size of its genetic contribution to the next generation.

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.