New York State Chemistry RegentsNew York State Earth Science Regents

Living Environment Regents June 2003 Question 23 PDF Print E-mail
Reproduction and Development


Correct Answer: (2) Materials are exchanged between fetal and maternal blood.

Placenta functions for the delivery of oxygen and food from the mother to the fetus. Aside from that, it also aids in disposal of the fetus' waster through the mother's kidney.

Incorrect Answers:

Oxygen diffuses from the maternal blood to the fetal blood.

Maternal blood is not converted into fetal blood. The fetal blood is developed from the fetus itself through the process of differentiation of cells during embryonic development.

Digestive enzymes do not pass on from the maternal blood. Just like blood, the digestive enzymes needed by the fetus are formed in the fetus during development.


You must be a registered user to post comments.

Copyright Information

All works and materials contained within this site Copyright © 2009 Technology Strategies For Success inc.


We are not affiliated with, nor endorsed by, the New York State Education Department.

The information contained in this website is for general information purposes only. The information is provided by "Technology Strategies for Success" and while we strive to keep the information up-to-date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.