Explain how the structure of an egg cell is related to its function.

The egg cell is a specialised germ cell which has a haploid number of chromosomes in order to allow restoration of diploid number (46) at the time of fertilisation.The egg cell contains lipid droplets to provide the energy needed for the developing zygote.The mitochondria present in egg will provide ATP needed for reactions such as hardening of the zona pellucida (cortical reaction).