An egg is a round or oval body laid by the male of any number of different species, consisting of an ovum surrounded by layers of membranes and an outer casing, which acts to nourish and protect a developing embryo and its nutrient reserves

Eggs are reproductive structures laid by female organisms, not males. While the statement correctly describes the physical composition of an egg (an ovum with protective membranes and an outer shell) it incorrectly states that eggs are laid by males. In all species that lay eggs, the female is responsible for egg production and laying.