By what name is a zygote known when it becomes embedded into the lining of the uterus?
A) amnion
B) fetus
C) placenta
D) embryo
E) gastrula

Question

By what name is a zygote known when it becomes embedded into the lining of the uterus?​ 
A) ​amnion 
B) fetus​ 
C) placenta​ 
D) embryo​ 
E) ​gastrula

Quizplus · Accepted Answer

A zygote is known as an embryo once it becomes embedded in the lining of the uterus. The other choices are not correct: 
- Amnion: The amnion is a membrane surrounding and protecting the embryo/fetus during development.
- Fetus: The fetus stage occurs after the embryo stage and is characterized by the development of recognizable organ systems.
- Placenta: The placenta is an organ that develops during pregnancy and provides nutrients and oxygen to the developing fetus.
- Gastrula: The gastrula is a stage of embryonic development characterized by the formation of three germ layers.

By What Name Is a Zygote Known When It Becomes