The energy yield in terms of ATP is higher in aerobic respiration than anaerobic respiration. Why anaerobic respiration occurs even in organisms that live in aerobic condition like human beings and angiosperms?

Anaerobic respiration occurs in organisms that live in aerobic condition like human beings when there is intensive exercise or stress on a muscle it leads to inadequate oxygen in the cells, the pyruvic acid gets reduced to lactic acid, and this is known as homolactic fermentation. In angiosperms, the germination of seeds leads to anaerobic respiration for releasing the energy for the seedling to emerge from the soil.