The lining of the uterus thickens after fertilization. The blood flow is good so as to nourish the growing embryo. Placenta is a special tissue which is embedded in the uterine wall and helps the embryo get the nourishment from the mother’s tissue. Placenta has villi on the embryo side and blood space on the mother’s side. This spacing provides a large area between the mother and the embryo and also for the waste removal.
Answered by Shivani Kumari | 2 years agoWhat could be the reason for adopting contraceptive methods?
How does reproduction help in providing stability to populations of species?
How are the modes for reproduction different in unicellular and multicellular organisms?
What are the different methods of contraception?
Draw a labelled diagram of the longitudinal section of a flower.