Question

women above the age of fifty are (generally)unable to give birth to children Explain the reason for the same

Answer 1

after the age of 50, menopause takes place. Due to menopause, no menstrual cycle takes place and hence no ovulation takes place. As ovulation doesn't take place, even if the sperm enters the female genital tract, no fertilisation takes place.
Hence women after 50 are unable to give birth to children.

Answer 2

hope it will help you.