Any toxic substance that can cross the placenta and cause birth defects is a teratogen.

Question

Quizplus · Accepted Answer

This is true. A teratogen is any agent or substance that can cause malformation or abnormal development of a fetus. Teratogens can include drugs, chemicals, infectious agents, and physical agents, and they can cross the placental barrier to reach the developing fetus. Exposure to teratogens during critical periods of fetal development can lead to birth defects or other adverse outcomes.

Any Toxic Substance That Can Cross the Placenta and Cause