Living Environment Regents Practice Test

What is one function of the placenta during internal development of an offspring?

1. Exchange of nutrients and gases

2. Production of hormones

3. Providing immune protection

4. Storage of waste products

The correct answer is: Exchange of nutrients and gases

One primary function of the placenta during the internal development of an offspring is the exchange of nutrients and gases between the mother and the developing fetus. The placenta acts as a vital interface that allows for the transfer of essential nutrients such as glucose and amino acids from the mother's bloodstream to the fetus, while also facilitating the removal of carbon dioxide and other metabolic wastes produced by the fetus. This is crucial for the growth and development of the fetus, as it relies entirely on the mother’s body for its nutritional and respiratory needs during pregnancy. While the placenta does also contribute to hormone production, immune protection, and the handling of waste, the main function that underscores its importance in fetal development is its role in the exchange of substances needed to sustain life.