Which Statement About Placental Mammals Is True

question 171

Multiple Choice

Which statement about placental mammals is true?

• A) A moderate amount of yolk supports the embryo prior to implantation.
• B) As the blastocyst reaches the uterus, it hatches from the trophoblast.
• C) The blastocyst produces the body of the embryo, and the maternal tissues produce the entire placenta.
• D) The zona pellucida promotes early implantation.
• E) Chorionic villi develop from the trophoblast and increase the embryo's area of contact with the maternal circulatory system.

---

Definitions:

William Levitt

An American real-estate developer credited with creating the modern American suburb through the development of mass-produced, affordable housing, notably Levittown.

Assembly-Line Methods

Industrial manufacturing processes in which a product is put together in a sequential manner by moving it from workstation to workstation, allowing for efficient mass production.

Modular Home Construction

The process of building homes in sections or modules in a factory setting, which are then transported and assembled on-site, offering a faster and sometimes more cost-effective alternative to traditional construction.

Smith v. Allwright

A landmark decision by the United States Supreme Court that declared the white primary unconstitutional, marking a significant step towards the end of formal racial discrimination in the voting process.