Question

mention any two changes that occur in the uterus of a woman if an ovum is fertilized

Answer 1

the Corpus luteum plants itself in the endometrial wall of the uterus to receive the zygote
the physiological connection between the foetal and the maternal tissue that is placenta is formed

Answer 2

$\huge\texttt{Answer:}}$

the implantation of the embryo had taken place the uterus starts developing the placenta which secretes female hormone to temporarily stop the menstrual cycle uptil delivery